Tina Rosmalina - Academia.edu (original) (raw)
Papers by Tina Rosmalina
Water Cycle, Dec 31, 2022
Water, Sep 27, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
AIP Conference Proceedings, Dec 31, 2022
Journal of hazardous materials, Jan 25, 2017
The occurrence of pharmaceuticals and personal care products (PPCPs) in natural waters, which act... more The occurrence of pharmaceuticals and personal care products (PPCPs) in natural waters, which act as drinking water sources, raises concerns. Moreover, those compounds incompletely removed by treatment have the chance to form toxic disinfection byproducts (DBPs) during subsequent disinfection. In this study, acetaminophen (Apap), commonly used to treat pain and fever, was selected as a model PPCP. The formation of carbonaceous and nitrogenous DBPs, namely trihalomethanes, haloacetonitriles, and haloacetamides, during chlor(am)ination of Apap was investigated. Yields of chloroform (CF), dichloroacetonitrile (DCAN), dicholoacetamide (DCAcAm), and tricholoacetamide (TCAcAm), during chlorination were all higher than from chloramination. The yields of CF continuously increased over 48h during both chlorination and chloramination. During chlorination, as the chlorine/Apap molar ratios increased from 1 to 20, CF yields increased from 0.33±0.02% to 2.52±0.15%, while the yields of DCAN, DCAc...
Sustainability
Illegal municipal waste dumping practices in developing countries may be impacted by many factors... more Illegal municipal waste dumping practices in developing countries may be impacted by many factors such as socioeconomic, demographic, availability of waste collection facilities, recycling sites, and spatial characteristics. This study uses spatial regression analysis to identify which factors primarily impact illegal waste dumping practices. For this purpose, 8 variables explain the data for the 177 subdistricts used in the spatial regression analysis. This study used ordinary least squares (OLS) and geographically weighted regression (GWR) methods to build a regression model of the factors identified. OLS analysis showed that only elevation and population density were found to become determinants of illegal waste dumping activity based on spatial regression methods. Elevation above sea level is positively correlated while population density is negatively correlated with the number of illegal dumping generations. GWR shows a better statistical value than OLS, where the significance...
Aerosol and Air Quality Research
Open waste burning (OWB) is a common disposal practice in several countries. However, this activi... more Open waste burning (OWB) is a common disposal practice in several countries. However, this activity can serve as a source of particulate matter and black carbon, which possess a greater greenhouse effect potential than CO2. Moreover, particulates can produce chronic health impacts on residents around the burning areas. Therefore, the present study aimed to examine the environmental effects and health risks associated with the open burning of household waste in Semarang, Indonesia. Four steps were followed to answer the research questions: (1) data collection through a random questionnaire survey, transect walk, and field survey; (2) estimation of environmental risk using the IPCC calculation method; (3) multiplication of emission factors to determine black carbon emissions; and (4) estimation of health risks based on chemical speciation bound to particulate matter. Open burning remained the second most common waste disposal practice even after the implementation of waste collection services by the government.
IOP Conference Series: Earth and Environmental Science, 2022
The widespread use of nonylphenol (NP) in various industries, in turn, give a negative impact on ... more The widespread use of nonylphenol (NP) in various industries, in turn, give a negative impact on the environment and living organisms since it has had several harmful effects on the aquatic organism. Hence, its level of contamination should be regularly monitored. However, due to its low concentration level, the determination of NP is challenging. Solid-phase extraction (SPE) could be utilised to detect a low NP dose in water. One of the most important factors for SPE extraction is selecting the proper adsorbent, and molecular-imprinted polymers (MIP) are considered the appropriate adsorbent in SPE extraction. This study aimed to synthesise and characterise the MIP for NP by precipitation polymerisation. Methacrylic acid (MAA), ethylene glycol dimethacrylate (EGDMA), benzoyl peroxide, acetonitrile, and NP were used as a functional monomer, a crosslinker, an initiator, a porogenic solvent, and a template molecule, respectively. The MIP was characterised using FTIR, SEM, and TGA. The ...
PROCEEDINGS OF THE 4TH INTERNATIONAL SEMINAR ON METALLURGY AND MATERIALS (ISMM2020): Accelerating Research and Innovation on Metallurgy and Materials for Inclusive and Sustainable Industry, 2021
Molecularly imprinted (MIP) and blank polymers with afinity for nonylphenol were synthesized by a... more Molecularly imprinted (MIP) and blank polymers with afinity for nonylphenol were synthesized by a bulk method using methacrylic acid (MAA) as functional monomer, ethylene glycol dimethacrylate as crosslinker (EGDMA), benzoyl peroxide (BPO) as initiator, nonylphenol (NP) as template molecules, and acetonitrile as porogen. The performance of imprinted material was characterized by SEM, FTIR, and TGA. The result indicated that this material had not only binding properties but also high selectivity to the template molecule and having high afinity of imprinted polymers (MIP-NP) towards the template nonylphenol as compared with blank polymers (NIP), which had good application prospects in the selective enrichment and separation of NP for analysis of complex environmental samples.
Dinitro-ortho-cresol (DNOC) is a pesticide compound commonly used as herbicides, larvacides, and ... more Dinitro-ortho-cresol (DNOC) is a pesticide compound commonly used as herbicides, larvacides, and insecticides in agriculture. DNOC is a toxic compound when exposed to humans and it can cause nausea, stomach disorders, anxiety, excessive burning, etc. It is of great significance to remove DNOC from the environment. In this study, the effective method for the preparation of imprinted by molecular system has been carried out. The benefit of this method is easy for preparation, stable, repeatable use, high mechanical strength, and resistance to heat and pressure. The objective of this research is to synthesize and characterize the functional material (MIP) that can be used for sorbent material of solid phase extraction (SPE). MIP for DNOC was prepared using methacrylic acid (MAA) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a crosslinker, benzoyl peroxide (BPO) as an initiator, and acetonitrile as a porogen. The morphous, composition, structure and performance of p...
Jurnal Kimia Terapan Indonesia, 2020
Anchovy (Stolephorus sp.) is an economically important fish in Indonesia. Anchovy contains Omega-... more Anchovy (Stolephorus sp.) is an economically important fish in Indonesia. Anchovy contains Omega-3 that important to maintain the health of the heart and brain. This study aimed to enrich the Omega 3 content of anchovy oil from the North Sea of West Java. The extraction of anchovy oil was carried out by the soxhlet method. Enrichment of omega 3 from anchovy fish oil is carried out by hydrolysis with a commercial lipase enzyme at concentration 500, 1000, 1500 and 2000 unit/600g fish oil, for 5, 10, 15 and 20 hour. Before hydrolysis, fish oil was added with solvent water, ethanol, toluene, and n-hexane. Omega 3 content of fish oil products were analyzed by using Gas Chromatography (GC) with FID detector with retention time 14.068 min and 15.506 min for α-Linolenat (ALA) and eicosapentaenoic (EPA), respectively. The results showed the highest omega 3 content (ALA 0.54% and EPA 1.103% ) was produced by addition n-hexane with a ratio 1:6 with the concentration of lipase was 1000 units ...
Jurnal Standardisasi, 2020
1,8-Sineol merupakan suatu senyawa terpenoid yang banyak dikandung pada minyak atsiri serta berba... more 1,8-Sineol merupakan suatu senyawa terpenoid yang banyak dikandung pada minyak atsiri serta berbagai rempah-rempah. Senyawa 1,8-Sineol memiliki karakteristik segar dan aroma menyengat juga rasa tajam yang memiliki bioaktifitas yang banyak manfaatnya, yaitu penurunan aktivitas lokomotor (antikejang), anti-kanker dan anti-tumor, antifungi, antiinflamasi, antioksidan, sebagai insektisida atau repelan, dan dapat mengurangi resiko penyakit kardiovaskular. Penelitian ini bertujuan untuk mengembangkan dan memvalidasi metode penetapan kadar senyawa 1,8-Sineol menggunakan kromatografi gas yang dilengkapi dengan detektor nyala (FID) melalui studi kolaborasi antar laboratorium. Validasi metode meliputi uji linieritas, nilai perolehan kembali, presisi, akurasi, konfirmasi identitas, dan estimasi ketidakpastian pengukuran. Kandungan Sineol ditetapkan dengan GC-FID menggunakan kolom HP-5 (30 m x 0,32 mm i.d, 0,25 µm). Hasil penelitian menunjukkan bahwa metode yang diusulkan memenuhi persyaratan k...
![Research paper thumbnail of [Preprint] An overview of electrokinetic soil flushing and its effect on bioremediation of hydrocarbon contaminated soil](https://attachments.academia-assets.com/90848414/thumbnails/1.jpg)
](Combination of electrokinetic soil flushing and bioremediation (EKSF-Bio) technology has attracte... more Combination of electrokinetic soil flushing and bioremediation (EKSF-Bio) technology has attracted many researchers attention in the last few decades. Electrokinetic is used to increase biodegradation rate of microorganisms in soil pores. Therefore, it is necessary to use solubilizing agents such as surfactants that can improve biodegradation process. This paper describes the basic understanding and recent development associated with electrokinetic soil flushing, bioremediation, and its combination as innovative hybrid solution for treating hydrocarbon contaminated soil. Surfactant has been widely used in many studies and practical applications in remediation of hydrocarbon contaminant, but specific review about those combination technology cannot be found. Surfactants and other flushing/solubilizing agents have significant effects to increase hydrocarbon remediation efficiency. Thus, this paper is expected to provide clear information about fundamental interaction between electroki...
Journal of Environmental Management, 2018
HIGHLIGHTS Fundamental interaction between electrokinetic soil flushing and bioremediation in c... more HIGHLIGHTS Fundamental interaction between electrokinetic soil flushing and bioremediation in contaminated soil are reviewed Recent progress and development of electrokinetic soil flushing and bioremediation are highlighted Sustainability assessment and future perspectives of electrokinetic soil flushing and bioremediation are summarized ABSTRACT Combination of electrokinetic soil flushing and bioremediation (EKSF-Bio) technology has attracted many researchers attention in the last few decades. Electrokinetic is used to increase biodegradation rate of microorganisms in soil pores. Therefore, it is necessary to use solubilizing agents such as surfactants that can improve biodegradation process. This paper describes the basic understanding and recent development associated with electrokinetic soil flushing, bioremediation, and its combination as innovative hybrid solution for treating hydrocarbon contaminated soil. Surfactant has been widely used in many studies and practical applications in remediation of 2 hydrocarbon contaminant, but specific review about those combination technology cannot be found. Surfactants and other flushing/solubilizing agents have significant effects to increase hydrocarbon remediation efficiency. Thus, this paper is expected to provide clear information about fundamental interaction between electrokinetic, flushing agents and bioremediation, principal factors, and an inspiration for ongoing and future research benefit.
Environmental Science and Pollution Research, 2022
With a 270 million Indonesian population, domestic wastewater is one of the major contributors to... more With a 270 million Indonesian population, domestic wastewater is one of the major contributors to wastewater generated from human activities. This review aimed to give an overview of the current state of domestic wastewater generation, characteristics and treatment systems in Indonesia. Overall, grey water quantity in Indonesia was 1 to 4 times higher than black water quantity, while the quantity of untreated grey water was 3 to 6 times higher than untreated black water. Parameters of concern include suspended solids, biochemical oxygen demand, chemical oxygen demand, oil and grease, nitrogen and coliforms. Our analysis shows that grey water can be a significant source of water pollution due to the large quantity and lack of treatment. In addition, black water treatment that relies mainly on on-site treatment is often inadequate due to the lack of quality control for the infrastructure, operation and maintenance. An incentive or penalty scheme to build and ensure the quality of domestic wastewater treatment is required and can be applied at the household, community or central (city) level.
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan
Indonesian government has committed to reduce and eliminate mercury. Hence, the intensity of moni... more Indonesian government has committed to reduce and eliminate mercury. Hence, the intensity of monitoring activities of mercury levels in various matrices would be increased and supported by qualified analytical data. Key characteristic performances, i.e., the limit of detection, linear range, precision, trueness, have been successfully carried out, and the method was shown to fit the purpose. The limit detection, LoD and LoQ, were found to be 0.26 and 0.86 µg/L, respectively, which were adequate to reach the tightest regulatory limit of mercury in surface water (1 µg/L). The examined linearity range of 1-20 µg/L has been found sufficient for its application since a high mercury concentration in the typical sample is seldomly expected. Precision and trueness aspects of the method were shown to have satisfaction performance, with CV of 1,24% and recovery of 104.54%. All the possible uncertainty sources have been identified in this study. Since no reference material was available, the u...
Pliocene age lignites from Lower Sajau seam, from borehole in Berau Basin, Northeast Kalimantan, ... more Pliocene age lignites from Lower Sajau seam, from borehole in Berau Basin, Northeast Kalimantan, Indonesia were investigated with respect to organic geochemistry by HPLC, GC and GC/MS. The analysis was conducted to drilling sequence of Kasai Coal Field, Berau Basin which has been ap-plied to identify organic sources and maturity of organic matter. The result of normalized yields of the soluble organic matter (SOM) data indicates saturated and aromatic proportion of hydrocar-bon are very low (under 10%), this was reflecting that lignite coal is still in immature stage. Moreover, biomarker hydrocarbon such as diterpenoids was not found from the sample that indi-cates absence of gymnosperm precursor in the paleo-peat. In contrast, there was great abundance of terpenoid biomarkers including lupane and oleanane showing domination of angiosperms in-dicate that angiosperm was dominated vegetation source. There also hopanoid biomarkers ex-plaining acidic depositional environment in coal for...
Biodiversitas Journal of Biological Diversity, Sep 21, 2018
Indonesia is the second largest producer of capture fisheries products in the world and the most ... more Indonesia is the second largest producer of capture fisheries products in the world and the most capture fisheries production comes from marine fisheries. Marine fish is a source of protein, amino acid, saturated and unsaturated fatty acids, which are important components of diet. The objective of the study was to investigate the protein and fatty acids profile of nine marine fish samples from Java Sea of Indramayu West Java, Indonesia. The analysis data showed that the total protein content of fish samples ranged from 61.07% (Pampus argenteus) to 86.56% (Tetraodontidae). Meanwhile, total lipid content of fish samples ranged from 1.73% (Tetraodontidae) to 9.82% (Leiognathus equulus). The concentration of α-Amino Nitrogen (AN) of fish protein hydrolysate was ranging from 31 mM (Nemipterus hexodon) to 69 mM (Mystacoleucus padangensis) and% Degree of Hydrolysis (DH) was ranging from 9.33% to 20.39%. The molecular weight of protein fish samples had similar profiles primarily for almost all samples, which could be observed from a typical band with the weight around 49 kDa. The saturated fatty acid (Ʃ SFA) compositions of fish species ranged from 1094.03-4233.03 µg/g. Oleic acid (MUFA) content of all fish species ranged from 257.91-1216.06 µg/g. However, only three fish species contain of Poly Unsaturated Fatty Acid (PUFA) linoleic acid as the following; Selaroides leptolepis (171.36 µg/g), Oxyeleotris marmorata (249.40µg/g) and Tetraodontidae (140.35 µg/g). The highest SFA content was found in S. leptolepis with palmitic acid (C16:0) as the dominant saturated fatty acid (2320.88 µg/g). S. leptolepis also contained high oleic acid (1216.06 µg/g) and linoleic acid (171.36 µg/g).
Jurnal Teknologi dan Industri Pangan
Sardinella (lemuru) is a genus of fish that is widespread in the East Java Sea region, especially... more Sardinella (lemuru) is a genus of fish that is widespread in the East Java Sea region, especially in Muncar, Banyuwangi in East Java Province, Indonesia. Marine fishes are rich in essential fatty acids, including omega-3. This study aims to improve the quality of lemuru fish oil through the use of adsorbent materials such as bentonite and activated carbon. The sample was analyzed to determine its free fatty acid (FFA) content and peroxide value (PV) using the titrimetric method. The clarity of the oil was determined using the spectrophotometric method (λ 440 nm). The omega 3 content from the fish oil sample was then enriched through enzymatic reactions using lipase. Enzymatic reactions were carried out for 5, 10, 15, 20, 35, and 47 hours with a lipase concentration of 500, 1000, 1500, and 2000 units respectively. The omega-3 content of the fish oil products was analyzed using the GC-FID method. The results show that the addition of 3% activated carbon and bentonite in the fish oil r...
Water Cycle, Dec 31, 2022
Water, Sep 27, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
AIP Conference Proceedings, Dec 31, 2022
Journal of hazardous materials, Jan 25, 2017
The occurrence of pharmaceuticals and personal care products (PPCPs) in natural waters, which act... more The occurrence of pharmaceuticals and personal care products (PPCPs) in natural waters, which act as drinking water sources, raises concerns. Moreover, those compounds incompletely removed by treatment have the chance to form toxic disinfection byproducts (DBPs) during subsequent disinfection. In this study, acetaminophen (Apap), commonly used to treat pain and fever, was selected as a model PPCP. The formation of carbonaceous and nitrogenous DBPs, namely trihalomethanes, haloacetonitriles, and haloacetamides, during chlor(am)ination of Apap was investigated. Yields of chloroform (CF), dichloroacetonitrile (DCAN), dicholoacetamide (DCAcAm), and tricholoacetamide (TCAcAm), during chlorination were all higher than from chloramination. The yields of CF continuously increased over 48h during both chlorination and chloramination. During chlorination, as the chlorine/Apap molar ratios increased from 1 to 20, CF yields increased from 0.33±0.02% to 2.52±0.15%, while the yields of DCAN, DCAc...
Sustainability
Illegal municipal waste dumping practices in developing countries may be impacted by many factors... more Illegal municipal waste dumping practices in developing countries may be impacted by many factors such as socioeconomic, demographic, availability of waste collection facilities, recycling sites, and spatial characteristics. This study uses spatial regression analysis to identify which factors primarily impact illegal waste dumping practices. For this purpose, 8 variables explain the data for the 177 subdistricts used in the spatial regression analysis. This study used ordinary least squares (OLS) and geographically weighted regression (GWR) methods to build a regression model of the factors identified. OLS analysis showed that only elevation and population density were found to become determinants of illegal waste dumping activity based on spatial regression methods. Elevation above sea level is positively correlated while population density is negatively correlated with the number of illegal dumping generations. GWR shows a better statistical value than OLS, where the significance...
Aerosol and Air Quality Research
Open waste burning (OWB) is a common disposal practice in several countries. However, this activi... more Open waste burning (OWB) is a common disposal practice in several countries. However, this activity can serve as a source of particulate matter and black carbon, which possess a greater greenhouse effect potential than CO2. Moreover, particulates can produce chronic health impacts on residents around the burning areas. Therefore, the present study aimed to examine the environmental effects and health risks associated with the open burning of household waste in Semarang, Indonesia. Four steps were followed to answer the research questions: (1) data collection through a random questionnaire survey, transect walk, and field survey; (2) estimation of environmental risk using the IPCC calculation method; (3) multiplication of emission factors to determine black carbon emissions; and (4) estimation of health risks based on chemical speciation bound to particulate matter. Open burning remained the second most common waste disposal practice even after the implementation of waste collection services by the government.
IOP Conference Series: Earth and Environmental Science, 2022
The widespread use of nonylphenol (NP) in various industries, in turn, give a negative impact on ... more The widespread use of nonylphenol (NP) in various industries, in turn, give a negative impact on the environment and living organisms since it has had several harmful effects on the aquatic organism. Hence, its level of contamination should be regularly monitored. However, due to its low concentration level, the determination of NP is challenging. Solid-phase extraction (SPE) could be utilised to detect a low NP dose in water. One of the most important factors for SPE extraction is selecting the proper adsorbent, and molecular-imprinted polymers (MIP) are considered the appropriate adsorbent in SPE extraction. This study aimed to synthesise and characterise the MIP for NP by precipitation polymerisation. Methacrylic acid (MAA), ethylene glycol dimethacrylate (EGDMA), benzoyl peroxide, acetonitrile, and NP were used as a functional monomer, a crosslinker, an initiator, a porogenic solvent, and a template molecule, respectively. The MIP was characterised using FTIR, SEM, and TGA. The ...
PROCEEDINGS OF THE 4TH INTERNATIONAL SEMINAR ON METALLURGY AND MATERIALS (ISMM2020): Accelerating Research and Innovation on Metallurgy and Materials for Inclusive and Sustainable Industry, 2021
Molecularly imprinted (MIP) and blank polymers with afinity for nonylphenol were synthesized by a... more Molecularly imprinted (MIP) and blank polymers with afinity for nonylphenol were synthesized by a bulk method using methacrylic acid (MAA) as functional monomer, ethylene glycol dimethacrylate as crosslinker (EGDMA), benzoyl peroxide (BPO) as initiator, nonylphenol (NP) as template molecules, and acetonitrile as porogen. The performance of imprinted material was characterized by SEM, FTIR, and TGA. The result indicated that this material had not only binding properties but also high selectivity to the template molecule and having high afinity of imprinted polymers (MIP-NP) towards the template nonylphenol as compared with blank polymers (NIP), which had good application prospects in the selective enrichment and separation of NP for analysis of complex environmental samples.
Dinitro-ortho-cresol (DNOC) is a pesticide compound commonly used as herbicides, larvacides, and ... more Dinitro-ortho-cresol (DNOC) is a pesticide compound commonly used as herbicides, larvacides, and insecticides in agriculture. DNOC is a toxic compound when exposed to humans and it can cause nausea, stomach disorders, anxiety, excessive burning, etc. It is of great significance to remove DNOC from the environment. In this study, the effective method for the preparation of imprinted by molecular system has been carried out. The benefit of this method is easy for preparation, stable, repeatable use, high mechanical strength, and resistance to heat and pressure. The objective of this research is to synthesize and characterize the functional material (MIP) that can be used for sorbent material of solid phase extraction (SPE). MIP for DNOC was prepared using methacrylic acid (MAA) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a crosslinker, benzoyl peroxide (BPO) as an initiator, and acetonitrile as a porogen. The morphous, composition, structure and performance of p...
Jurnal Kimia Terapan Indonesia, 2020
Anchovy (Stolephorus sp.) is an economically important fish in Indonesia. Anchovy contains Omega-... more Anchovy (Stolephorus sp.) is an economically important fish in Indonesia. Anchovy contains Omega-3 that important to maintain the health of the heart and brain. This study aimed to enrich the Omega 3 content of anchovy oil from the North Sea of West Java. The extraction of anchovy oil was carried out by the soxhlet method. Enrichment of omega 3 from anchovy fish oil is carried out by hydrolysis with a commercial lipase enzyme at concentration 500, 1000, 1500 and 2000 unit/600g fish oil, for 5, 10, 15 and 20 hour. Before hydrolysis, fish oil was added with solvent water, ethanol, toluene, and n-hexane. Omega 3 content of fish oil products were analyzed by using Gas Chromatography (GC) with FID detector with retention time 14.068 min and 15.506 min for α-Linolenat (ALA) and eicosapentaenoic (EPA), respectively. The results showed the highest omega 3 content (ALA 0.54% and EPA 1.103% ) was produced by addition n-hexane with a ratio 1:6 with the concentration of lipase was 1000 units ...
Jurnal Standardisasi, 2020
1,8-Sineol merupakan suatu senyawa terpenoid yang banyak dikandung pada minyak atsiri serta berba... more 1,8-Sineol merupakan suatu senyawa terpenoid yang banyak dikandung pada minyak atsiri serta berbagai rempah-rempah. Senyawa 1,8-Sineol memiliki karakteristik segar dan aroma menyengat juga rasa tajam yang memiliki bioaktifitas yang banyak manfaatnya, yaitu penurunan aktivitas lokomotor (antikejang), anti-kanker dan anti-tumor, antifungi, antiinflamasi, antioksidan, sebagai insektisida atau repelan, dan dapat mengurangi resiko penyakit kardiovaskular. Penelitian ini bertujuan untuk mengembangkan dan memvalidasi metode penetapan kadar senyawa 1,8-Sineol menggunakan kromatografi gas yang dilengkapi dengan detektor nyala (FID) melalui studi kolaborasi antar laboratorium. Validasi metode meliputi uji linieritas, nilai perolehan kembali, presisi, akurasi, konfirmasi identitas, dan estimasi ketidakpastian pengukuran. Kandungan Sineol ditetapkan dengan GC-FID menggunakan kolom HP-5 (30 m x 0,32 mm i.d, 0,25 µm). Hasil penelitian menunjukkan bahwa metode yang diusulkan memenuhi persyaratan k...
Combination of electrokinetic soil flushing and bioremediation (EKSF-Bio) technology has attracte... more Combination of electrokinetic soil flushing and bioremediation (EKSF-Bio) technology has attracted many researchers attention in the last few decades. Electrokinetic is used to increase biodegradation rate of microorganisms in soil pores. Therefore, it is necessary to use solubilizing agents such as surfactants that can improve biodegradation process. This paper describes the basic understanding and recent development associated with electrokinetic soil flushing, bioremediation, and its combination as innovative hybrid solution for treating hydrocarbon contaminated soil. Surfactant has been widely used in many studies and practical applications in remediation of hydrocarbon contaminant, but specific review about those combination technology cannot be found. Surfactants and other flushing/solubilizing agents have significant effects to increase hydrocarbon remediation efficiency. Thus, this paper is expected to provide clear information about fundamental interaction between electroki...
Journal of Environmental Management, 2018
HIGHLIGHTS Fundamental interaction between electrokinetic soil flushing and bioremediation in c... more HIGHLIGHTS Fundamental interaction between electrokinetic soil flushing and bioremediation in contaminated soil are reviewed Recent progress and development of electrokinetic soil flushing and bioremediation are highlighted Sustainability assessment and future perspectives of electrokinetic soil flushing and bioremediation are summarized ABSTRACT Combination of electrokinetic soil flushing and bioremediation (EKSF-Bio) technology has attracted many researchers attention in the last few decades. Electrokinetic is used to increase biodegradation rate of microorganisms in soil pores. Therefore, it is necessary to use solubilizing agents such as surfactants that can improve biodegradation process. This paper describes the basic understanding and recent development associated with electrokinetic soil flushing, bioremediation, and its combination as innovative hybrid solution for treating hydrocarbon contaminated soil. Surfactant has been widely used in many studies and practical applications in remediation of 2 hydrocarbon contaminant, but specific review about those combination technology cannot be found. Surfactants and other flushing/solubilizing agents have significant effects to increase hydrocarbon remediation efficiency. Thus, this paper is expected to provide clear information about fundamental interaction between electrokinetic, flushing agents and bioremediation, principal factors, and an inspiration for ongoing and future research benefit.
Environmental Science and Pollution Research, 2022
With a 270 million Indonesian population, domestic wastewater is one of the major contributors to... more With a 270 million Indonesian population, domestic wastewater is one of the major contributors to wastewater generated from human activities. This review aimed to give an overview of the current state of domestic wastewater generation, characteristics and treatment systems in Indonesia. Overall, grey water quantity in Indonesia was 1 to 4 times higher than black water quantity, while the quantity of untreated grey water was 3 to 6 times higher than untreated black water. Parameters of concern include suspended solids, biochemical oxygen demand, chemical oxygen demand, oil and grease, nitrogen and coliforms. Our analysis shows that grey water can be a significant source of water pollution due to the large quantity and lack of treatment. In addition, black water treatment that relies mainly on on-site treatment is often inadequate due to the lack of quality control for the infrastructure, operation and maintenance. An incentive or penalty scheme to build and ensure the quality of domestic wastewater treatment is required and can be applied at the household, community or central (city) level.
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan
Indonesian government has committed to reduce and eliminate mercury. Hence, the intensity of moni... more Indonesian government has committed to reduce and eliminate mercury. Hence, the intensity of monitoring activities of mercury levels in various matrices would be increased and supported by qualified analytical data. Key characteristic performances, i.e., the limit of detection, linear range, precision, trueness, have been successfully carried out, and the method was shown to fit the purpose. The limit detection, LoD and LoQ, were found to be 0.26 and 0.86 µg/L, respectively, which were adequate to reach the tightest regulatory limit of mercury in surface water (1 µg/L). The examined linearity range of 1-20 µg/L has been found sufficient for its application since a high mercury concentration in the typical sample is seldomly expected. Precision and trueness aspects of the method were shown to have satisfaction performance, with CV of 1,24% and recovery of 104.54%. All the possible uncertainty sources have been identified in this study. Since no reference material was available, the u...
Pliocene age lignites from Lower Sajau seam, from borehole in Berau Basin, Northeast Kalimantan, ... more Pliocene age lignites from Lower Sajau seam, from borehole in Berau Basin, Northeast Kalimantan, Indonesia were investigated with respect to organic geochemistry by HPLC, GC and GC/MS. The analysis was conducted to drilling sequence of Kasai Coal Field, Berau Basin which has been ap-plied to identify organic sources and maturity of organic matter. The result of normalized yields of the soluble organic matter (SOM) data indicates saturated and aromatic proportion of hydrocar-bon are very low (under 10%), this was reflecting that lignite coal is still in immature stage. Moreover, biomarker hydrocarbon such as diterpenoids was not found from the sample that indi-cates absence of gymnosperm precursor in the paleo-peat. In contrast, there was great abundance of terpenoid biomarkers including lupane and oleanane showing domination of angiosperms in-dicate that angiosperm was dominated vegetation source. There also hopanoid biomarkers ex-plaining acidic depositional environment in coal for...
Biodiversitas Journal of Biological Diversity, Sep 21, 2018
Indonesia is the second largest producer of capture fisheries products in the world and the most ... more Indonesia is the second largest producer of capture fisheries products in the world and the most capture fisheries production comes from marine fisheries. Marine fish is a source of protein, amino acid, saturated and unsaturated fatty acids, which are important components of diet. The objective of the study was to investigate the protein and fatty acids profile of nine marine fish samples from Java Sea of Indramayu West Java, Indonesia. The analysis data showed that the total protein content of fish samples ranged from 61.07% (Pampus argenteus) to 86.56% (Tetraodontidae). Meanwhile, total lipid content of fish samples ranged from 1.73% (Tetraodontidae) to 9.82% (Leiognathus equulus). The concentration of α-Amino Nitrogen (AN) of fish protein hydrolysate was ranging from 31 mM (Nemipterus hexodon) to 69 mM (Mystacoleucus padangensis) and% Degree of Hydrolysis (DH) was ranging from 9.33% to 20.39%. The molecular weight of protein fish samples had similar profiles primarily for almost all samples, which could be observed from a typical band with the weight around 49 kDa. The saturated fatty acid (Ʃ SFA) compositions of fish species ranged from 1094.03-4233.03 µg/g. Oleic acid (MUFA) content of all fish species ranged from 257.91-1216.06 µg/g. However, only three fish species contain of Poly Unsaturated Fatty Acid (PUFA) linoleic acid as the following; Selaroides leptolepis (171.36 µg/g), Oxyeleotris marmorata (249.40µg/g) and Tetraodontidae (140.35 µg/g). The highest SFA content was found in S. leptolepis with palmitic acid (C16:0) as the dominant saturated fatty acid (2320.88 µg/g). S. leptolepis also contained high oleic acid (1216.06 µg/g) and linoleic acid (171.36 µg/g).
Jurnal Teknologi dan Industri Pangan
Sardinella (lemuru) is a genus of fish that is widespread in the East Java Sea region, especially... more Sardinella (lemuru) is a genus of fish that is widespread in the East Java Sea region, especially in Muncar, Banyuwangi in East Java Province, Indonesia. Marine fishes are rich in essential fatty acids, including omega-3. This study aims to improve the quality of lemuru fish oil through the use of adsorbent materials such as bentonite and activated carbon. The sample was analyzed to determine its free fatty acid (FFA) content and peroxide value (PV) using the titrimetric method. The clarity of the oil was determined using the spectrophotometric method (λ 440 nm). The omega 3 content from the fish oil sample was then enriched through enzymatic reactions using lipase. Enzymatic reactions were carried out for 5, 10, 15, 20, 35, and 47 hours with a lipase concentration of 500, 1000, 1500, and 2000 units respectively. The omega-3 content of the fish oil products was analyzed using the GC-FID method. The results show that the addition of 3% activated carbon and bentonite in the fish oil r...