Nahid Navidjouy - Academia.edu (original) (raw)
Volume 1, Issue 1 by Nahid Navidjouy
The rapid industrial development and agricultural growth and the indiscriminate production of pol... more The rapid industrial development and agricultural growth and the indiscriminate production of pollutants have faced problems for human societies and the environment .Accumulation and pollution of heavy metals in the environment are the main important problems that as a result of human activities through extraction from ore and processing for various applications has led to the release of these elements in the environment. Heavy metals are non-biodegradable, so they could accumulate in the environment and subsequently contaminate the food chain. Some heavy metals are known as carcinogens, endocrine disruptors and mutagens, and this is a serious threat for human health. Therefore, today, the removal of heavy metal pollutions from the environment has been received special attention by researchers. In the application of physicochemical methods for this purpose, there will be serious limitations such as the need for chemical substances, high cost, the need for specialized equipment and skills, changes in soil characteristics, and disruption of native soil microflora. In contrast, phytoremediation is a better solution to the problem. The use of plants and natural soil microbes to reduce the concentration or toxic effects of pollutants in the environment is called phytoremediation. It is considered as a costeffective, efficient, new, environmentally friendly and highly adoptable technology. New efficient metal superaccumulator plants are being investigated for applications in phytoremediation and plant extraction. This review article comprehensively discusses the background, concepts, processes and mechanisms in plant remediation of heavy metals.
Papers by Nahid Navidjouy
Apple Academic Press eBooks, Jun 17, 2015
and in particular Listeria monocytogenes is considered a ubiquitous foodborne pathogen which can ... more and in particular Listeria monocytogenes is considered a ubiquitous foodborne pathogen which can lead listeriosis in human and animals. Listeriosis can be serious and may cause meningitis, septicemia and abortion in pregnant women. Although wastewater or sludge may contaminate foods of plant origin, there are no data on occurrence of Listeria spp. in wastewater and sludge in Iran. The purpose of current investigation was to study the occurrence of Listeria spp. in various samples of wastewater and sludge in Isfahan North wastewater treatment plant. Influent, effluent, raw sludge and dried sludge samples were collected from Isfahan North municipal wastewater treatment plant. L. monocytogenes were enumerated by a three-tube most probable number (MPN) assay using enrichment Fraser broth. A total of 65 various samples from five step in 13 visits were collected. The presence of Listeria spp. also was determined using USDA procedure. Then, phenotypically identified L. monocytogenes were f...
Scientific Reports
Microbial fuel cells (MFCs) are a self-sustaining and environmentally friendly system for the sim... more Microbial fuel cells (MFCs) are a self-sustaining and environmentally friendly system for the simultaneous was tewater treatment and bioelectricity generation. The type and material of the electrode are critical factors that can influence the efficiency of this treatment process. In this study, graphite plates and carbon felt were modified through the electrodeposition of nickel followed by the formation of a biofilm, resulting in conductive bio-anode thin film electrodes with enhanced power generation capacity. The structural and morphological properties of the electrode surfaces were characterized using X-ray diffraction, energy-dispersive X-ray spectroscopy, elemental mapping, and field-emission scanning electron microscopy techniques. Maximum voltage, current density, and power generation were investigated using a dual-chamber MFC equipped with a Nafion 117 membrane and bio-nickel-doped carbon felt (bio-Ni@CF) and bio-nickel-doped graphite plate (bio-Ni@GP) electrodes under cons...
Health Science Monitor
Background & Aims: Considering the importance of academic fields, especially healthcare fields, k... more Background & Aims: Considering the importance of academic fields, especially healthcare fields, knowing students' attitude towards their field of study and future careers is highly important. Therefore, the purpose of the present study was to determine the attitude of Urmia University of Medical Sciences students towards their field of study and future career. Materials & Methods: In the present cross-sectional study, 200 students of Urmia University of Medical Sciences (Urmia, Iran) were participated by convenience sampling method. The data collection tool was a researcher-made questionnaire that included two parts. The first part entailed the demographic information and second part some questions to measure the attitude towards the field of study and future career. Data analysis was performed using SPSS 16 software. Results: The mean score of attitude of 80 students towards their field of study and future career was 52.01 ± 7.63, while that of 70 cases was 49.65 ± 10.47. The majority of the students had an average attitude towards their field of study (72.5%) and future career (54.0%). Students of some fields, such as medicine, pharmacy, nursing, operating room, and emergency medicine, had a more positive attitude towards their field of study and future career than other fields. Only 5.5% and 29.5% of students had a good/positive attitude towards their field of study and future career, respectively. Conclusion: The weak attitude of students of some fields, including public health, environmental health, radiology, anesthesia, and laboratory sciences, towards their field of study and future career shows the need for an appropriate planning to improve and strengthen educational programs and increase the career capacities of the mentioned fields.
RSC Advances, 2021
In this new insight, the potential application of the Bio-Electro-Fenton system was surveyed with... more In this new insight, the potential application of the Bio-Electro-Fenton system was surveyed with the aim of simultaneous degradation of tetracycline and in situ generation of renewable bioenergy without the need for an external electricity source.
Biofuel Research Journal, 2021
Materials at the nanoscale show exciting and different properties. In this review, the applicatio... more Materials at the nanoscale show exciting and different properties. In this review, the applications of nanomaterials for modifying the main components of microbial fuel cell (MFC) systems (i.e., electrodes and membranes) and their effect on cell performance are reviewed and critically discussed. Carbon and metal-based nanoparticles and conductive polymers could contribute to the growth of thick anodic and cathodic microbial biofilms, leading to enhanced electron transfer between the electrodes and the biofilm. Extending active surface area, increasing conductivity, and biocompatibility are among the significant attributes of promising nanomaterials used in MFC modifications. The application of nanomaterials in fabricating cathode catalysts (catalyzing oxygen reduction reaction) is also reviewed herein. Among the various nanocatalysts used on the cathode side, metal-based nanocatalysts such as metal oxides and metal-organic frameworks (MOFs) are regarded as inexpensive and high-perfo...
Environmental Technology, 2020
ABSTRACT Microbial fuel cells (MFCS) is a promising and expanding technology able to eliminate va... more ABSTRACT Microbial fuel cells (MFCS) is a promising and expanding technology able to eliminate various pollutants of wastewater while converting its chemical energy into power energy using biocatalysts. The potential application of double-chamber microbial fuel cell (DC-MFC) for chemical oxygen demand (COD) removal and generated power from wastewater in the different conditions is investigated. DC-MFC is operated with anaerobic sludge as an active biocatalyst in an anode section, an aerobic cathode section and a Nafion117 membrane as a separator. The performance of the bioreactor is determined with different concentrations of chemical oxygen demand (COD) loadings in the MFC process, in terms of COD removal, power generation and columbic efficiencies. The results illustrated that COD removal efficiency increased at the high concentrations of organic matter. So that at COD concentration of 2000.0 mg/L the highest COD removal efficiency (84%) was obtained. But with increasing substrate initial concentration to 10000.0 mg/L the efficiency decreased to 79%. The important outputs of the system like the highest voltage, maximum generated power, current density, and energy efficiency with the 100,000 mg/L COD are 447 mV, 50.7 mW/m2, 570.0 mA/m2, and 18.6%, respectively. The optical density levels increased due to bacterial growth while pH severely decreased in the anode chamber when using high-concentration substrates in the MFC. GRAPHICAL ABSTRACT
Iranian Journal of Health and Environment, Jul 15, 2014
THE JOURNAL OF URMIA UNIVERSITY …, 2005
... Source: UMJ 2005: 16(1): 58. ISSN 1027-3727. 1 Assistant Professor of Genetic, Urmia Universi... more ... Source: UMJ 2005: 16(1): 58. ISSN 1027-3727. 1 Assistant Professor of Genetic, Urmia University of Medical Sciences. 2 Perinatalogist, Emam Reza Hospital, Urmia, Iran. ... Materials & Methods: This is a Quasi-experimental study which is done in Uremia's Imam Reza hospital. ...
RSC Advances
Bio-electro-Fenton system is a promising technology for the environmental organic pollutants degr... more Bio-electro-Fenton system is a promising technology for the environmental organic pollutants degradation and bioelectricity generation.
DOAJ (DOAJ: Directory of Open Access Journals), Dec 1, 2021
Journal of Cleaner Production, 2019
In this new insight, the potential application of the eco-friendly bioanode material was investig... more In this new insight, the potential application of the eco-friendly bioanode material was investigated with the aim of ammonium removal and its recovery, alongside power generation from wastewater in bioelectrochemical systems (BES s). In this procedure, biodegradation of ammonia was directly accrued via bioanode compartment driven by in-situ generated bioelectricity. To this end, this protocol was implemented with the anaerobic microbial as a biocatalyst in an anode chamber, as well as aerobic cathode chamber and a Nafion117 membrane as a separator with attractive results for the BES. The findings of the study suggested that BES, at the optimum operational conditions, can be an effective process for removing the high concentrations of organic materials and ammonium from industrial wastewater. The maximum BES efficiency was obtained 94% for the ammonium removal with a chemical oxygen demand (COD) concentration of 10,000 mg/L and a maximum organic removal rate of 78% with a substrate concentration of 2000 mg/L. The maximum voltage, power and current density of the BES was 481 mV, 62.7 mW/m 2 , 570 mA/m 2 , respectively. Further, an increase in NH 4 Cl concentration improved the maximum current density (808 mA/m 2). The results demonstrated that the bio-electrochemical system could be utilized to treat industrial wastewater, containing high amounts of ammonium and organic materials, by adjusting the organic matter to ammonium (COD/NH 4 þ) ratio while simultaneously generating electricity. Generally, the application of this eco-design, and sustainable bioanode material can be a good foundation and new perspective for practical application with regards to green and sustainable chemistry.
International Journal of Environmental Health Engineering, 2013
Aims: The aim of present study was determination of occurrence of Listeria Listeria spp. in vario... more Aims: The aim of present study was determination of occurrence of Listeria Listeria spp. in various point of a municipal wastewater treatment plant. Materials and Methods: The samples were collected of influent, effluent, raw sludge, stabilized sludge and dried sludge from north wastewater treatment plant Isfahan, Iran. The presence of Listeria spp. was determined using USDA procedure and enumerated by a three-tube most probable number assay using Fraser enrichment broth. Then, biochemically identified Listeria monocytogenes was further confirmed by PCR amplification. Results: L. monocytogenes, L. innocua and L. seeligeri were isolated from 76.9%, 23.1% and 23.1% of influent, 38.5%, 46.2% and 7.7% of effluent, 84.6%, 69.2% and 46.2% of raw sludge, 69.2%, 76.9% and 0% of stabilized sludge and 46.2%, 7.7% and 0% of dried sludge samples, respectively. The efficiency of wastewater treatment processes, digester tank and drying bed in removal of L. monocytogenes were 69.6%, 64.7% and 73.4%, respectively. All phenotypically identified L. monocytogenes were further confirmed by PCR method. Conclusion: Application of sewage sludge in agricultural farms as fertilizer may result in bacteria spreading in agriculture fields and contaminated foods with plant origin. This may cause a risk of spreading disease to human and animals. Using parameters such as BOD 5 is not sufficient standard for the elimination of pathogenic microorganisms.
Health Science Monitor
The rapid industrial development and agricultural growth and the indiscriminate production of pol... more The rapid industrial development and agricultural growth and the indiscriminate production of pollutants have faced problems for human societies and the environment .Accumulation and pollution of heavy metals in the environment are the main important problems that as a result of human activities through extraction from ore and processing for various applications has led to the release of these elements in the environment. Heavy metals are non-biodegradable, so they could accumulate in the environment and subsequently contaminate the food chain. Some heavy metals are known as carcinogens, endocrine disruptors and mutagens, and this is a serious threat for human health. Therefore, today, the removal of heavy metal pollutions from the environment has been received special attention by researchers. In the application of physicochemical methods for this purpose, there will be serious limitations such as the need for chemical substances, high cost, the need for specialized equipment and skills, changes in soil characteristics, and disruption of native soil microflora. In contrast, phytoremediation is a better solution to the problem. The use of plants and natural soil microbes to reduce the concentration or toxic effects of pollutants in the environment is called phytoremediation. It is considered as a costeffective, efficient, new, environmentally friendly and highly adoptable technology. New efficient metal superaccumulator plants are being investigated for applications in phytoremediation and plant extraction. This review article comprehensively discusses the background, concepts, processes and mechanisms in plant remediation of heavy metals.
The rapid industrial development and agricultural growth and the indiscriminate production of pol... more The rapid industrial development and agricultural growth and the indiscriminate production of pollutants have faced problems for human societies and the environment .Accumulation and pollution of heavy metals in the environment are the main important problems that as a result of human activities through extraction from ore and processing for various applications has led to the release of these elements in the environment. Heavy metals are non-biodegradable, so they could accumulate in the environment and subsequently contaminate the food chain. Some heavy metals are known as carcinogens, endocrine disruptors and mutagens, and this is a serious threat for human health. Therefore, today, the removal of heavy metal pollutions from the environment has been received special attention by researchers. In the application of physicochemical methods for this purpose, there will be serious limitations such as the need for chemical substances, high cost, the need for specialized equipment and skills, changes in soil characteristics, and disruption of native soil microflora. In contrast, phytoremediation is a better solution to the problem. The use of plants and natural soil microbes to reduce the concentration or toxic effects of pollutants in the environment is called phytoremediation. It is considered as a costeffective, efficient, new, environmentally friendly and highly adoptable technology. New efficient metal superaccumulator plants are being investigated for applications in phytoremediation and plant extraction. This review article comprehensively discusses the background, concepts, processes and mechanisms in plant remediation of heavy metals.
Apple Academic Press eBooks, Jun 17, 2015
and in particular Listeria monocytogenes is considered a ubiquitous foodborne pathogen which can ... more and in particular Listeria monocytogenes is considered a ubiquitous foodborne pathogen which can lead listeriosis in human and animals. Listeriosis can be serious and may cause meningitis, septicemia and abortion in pregnant women. Although wastewater or sludge may contaminate foods of plant origin, there are no data on occurrence of Listeria spp. in wastewater and sludge in Iran. The purpose of current investigation was to study the occurrence of Listeria spp. in various samples of wastewater and sludge in Isfahan North wastewater treatment plant. Influent, effluent, raw sludge and dried sludge samples were collected from Isfahan North municipal wastewater treatment plant. L. monocytogenes were enumerated by a three-tube most probable number (MPN) assay using enrichment Fraser broth. A total of 65 various samples from five step in 13 visits were collected. The presence of Listeria spp. also was determined using USDA procedure. Then, phenotypically identified L. monocytogenes were f...
Scientific Reports
Microbial fuel cells (MFCs) are a self-sustaining and environmentally friendly system for the sim... more Microbial fuel cells (MFCs) are a self-sustaining and environmentally friendly system for the simultaneous was tewater treatment and bioelectricity generation. The type and material of the electrode are critical factors that can influence the efficiency of this treatment process. In this study, graphite plates and carbon felt were modified through the electrodeposition of nickel followed by the formation of a biofilm, resulting in conductive bio-anode thin film electrodes with enhanced power generation capacity. The structural and morphological properties of the electrode surfaces were characterized using X-ray diffraction, energy-dispersive X-ray spectroscopy, elemental mapping, and field-emission scanning electron microscopy techniques. Maximum voltage, current density, and power generation were investigated using a dual-chamber MFC equipped with a Nafion 117 membrane and bio-nickel-doped carbon felt (bio-Ni@CF) and bio-nickel-doped graphite plate (bio-Ni@GP) electrodes under cons...
Health Science Monitor
Background & Aims: Considering the importance of academic fields, especially healthcare fields, k... more Background & Aims: Considering the importance of academic fields, especially healthcare fields, knowing students' attitude towards their field of study and future careers is highly important. Therefore, the purpose of the present study was to determine the attitude of Urmia University of Medical Sciences students towards their field of study and future career. Materials & Methods: In the present cross-sectional study, 200 students of Urmia University of Medical Sciences (Urmia, Iran) were participated by convenience sampling method. The data collection tool was a researcher-made questionnaire that included two parts. The first part entailed the demographic information and second part some questions to measure the attitude towards the field of study and future career. Data analysis was performed using SPSS 16 software. Results: The mean score of attitude of 80 students towards their field of study and future career was 52.01 ± 7.63, while that of 70 cases was 49.65 ± 10.47. The majority of the students had an average attitude towards their field of study (72.5%) and future career (54.0%). Students of some fields, such as medicine, pharmacy, nursing, operating room, and emergency medicine, had a more positive attitude towards their field of study and future career than other fields. Only 5.5% and 29.5% of students had a good/positive attitude towards their field of study and future career, respectively. Conclusion: The weak attitude of students of some fields, including public health, environmental health, radiology, anesthesia, and laboratory sciences, towards their field of study and future career shows the need for an appropriate planning to improve and strengthen educational programs and increase the career capacities of the mentioned fields.
RSC Advances, 2021
In this new insight, the potential application of the Bio-Electro-Fenton system was surveyed with... more In this new insight, the potential application of the Bio-Electro-Fenton system was surveyed with the aim of simultaneous degradation of tetracycline and in situ generation of renewable bioenergy without the need for an external electricity source.
Biofuel Research Journal, 2021
Materials at the nanoscale show exciting and different properties. In this review, the applicatio... more Materials at the nanoscale show exciting and different properties. In this review, the applications of nanomaterials for modifying the main components of microbial fuel cell (MFC) systems (i.e., electrodes and membranes) and their effect on cell performance are reviewed and critically discussed. Carbon and metal-based nanoparticles and conductive polymers could contribute to the growth of thick anodic and cathodic microbial biofilms, leading to enhanced electron transfer between the electrodes and the biofilm. Extending active surface area, increasing conductivity, and biocompatibility are among the significant attributes of promising nanomaterials used in MFC modifications. The application of nanomaterials in fabricating cathode catalysts (catalyzing oxygen reduction reaction) is also reviewed herein. Among the various nanocatalysts used on the cathode side, metal-based nanocatalysts such as metal oxides and metal-organic frameworks (MOFs) are regarded as inexpensive and high-perfo...
Environmental Technology, 2020
ABSTRACT Microbial fuel cells (MFCS) is a promising and expanding technology able to eliminate va... more ABSTRACT Microbial fuel cells (MFCS) is a promising and expanding technology able to eliminate various pollutants of wastewater while converting its chemical energy into power energy using biocatalysts. The potential application of double-chamber microbial fuel cell (DC-MFC) for chemical oxygen demand (COD) removal and generated power from wastewater in the different conditions is investigated. DC-MFC is operated with anaerobic sludge as an active biocatalyst in an anode section, an aerobic cathode section and a Nafion117 membrane as a separator. The performance of the bioreactor is determined with different concentrations of chemical oxygen demand (COD) loadings in the MFC process, in terms of COD removal, power generation and columbic efficiencies. The results illustrated that COD removal efficiency increased at the high concentrations of organic matter. So that at COD concentration of 2000.0 mg/L the highest COD removal efficiency (84%) was obtained. But with increasing substrate initial concentration to 10000.0 mg/L the efficiency decreased to 79%. The important outputs of the system like the highest voltage, maximum generated power, current density, and energy efficiency with the 100,000 mg/L COD are 447 mV, 50.7 mW/m2, 570.0 mA/m2, and 18.6%, respectively. The optical density levels increased due to bacterial growth while pH severely decreased in the anode chamber when using high-concentration substrates in the MFC. GRAPHICAL ABSTRACT
Iranian Journal of Health and Environment, Jul 15, 2014
THE JOURNAL OF URMIA UNIVERSITY …, 2005
... Source: UMJ 2005: 16(1): 58. ISSN 1027-3727. 1 Assistant Professor of Genetic, Urmia Universi... more ... Source: UMJ 2005: 16(1): 58. ISSN 1027-3727. 1 Assistant Professor of Genetic, Urmia University of Medical Sciences. 2 Perinatalogist, Emam Reza Hospital, Urmia, Iran. ... Materials & Methods: This is a Quasi-experimental study which is done in Uremia's Imam Reza hospital. ...
RSC Advances
Bio-electro-Fenton system is a promising technology for the environmental organic pollutants degr... more Bio-electro-Fenton system is a promising technology for the environmental organic pollutants degradation and bioelectricity generation.
DOAJ (DOAJ: Directory of Open Access Journals), Dec 1, 2021
Journal of Cleaner Production, 2019
In this new insight, the potential application of the eco-friendly bioanode material was investig... more In this new insight, the potential application of the eco-friendly bioanode material was investigated with the aim of ammonium removal and its recovery, alongside power generation from wastewater in bioelectrochemical systems (BES s). In this procedure, biodegradation of ammonia was directly accrued via bioanode compartment driven by in-situ generated bioelectricity. To this end, this protocol was implemented with the anaerobic microbial as a biocatalyst in an anode chamber, as well as aerobic cathode chamber and a Nafion117 membrane as a separator with attractive results for the BES. The findings of the study suggested that BES, at the optimum operational conditions, can be an effective process for removing the high concentrations of organic materials and ammonium from industrial wastewater. The maximum BES efficiency was obtained 94% for the ammonium removal with a chemical oxygen demand (COD) concentration of 10,000 mg/L and a maximum organic removal rate of 78% with a substrate concentration of 2000 mg/L. The maximum voltage, power and current density of the BES was 481 mV, 62.7 mW/m 2 , 570 mA/m 2 , respectively. Further, an increase in NH 4 Cl concentration improved the maximum current density (808 mA/m 2). The results demonstrated that the bio-electrochemical system could be utilized to treat industrial wastewater, containing high amounts of ammonium and organic materials, by adjusting the organic matter to ammonium (COD/NH 4 þ) ratio while simultaneously generating electricity. Generally, the application of this eco-design, and sustainable bioanode material can be a good foundation and new perspective for practical application with regards to green and sustainable chemistry.
International Journal of Environmental Health Engineering, 2013
Aims: The aim of present study was determination of occurrence of Listeria Listeria spp. in vario... more Aims: The aim of present study was determination of occurrence of Listeria Listeria spp. in various point of a municipal wastewater treatment plant. Materials and Methods: The samples were collected of influent, effluent, raw sludge, stabilized sludge and dried sludge from north wastewater treatment plant Isfahan, Iran. The presence of Listeria spp. was determined using USDA procedure and enumerated by a three-tube most probable number assay using Fraser enrichment broth. Then, biochemically identified Listeria monocytogenes was further confirmed by PCR amplification. Results: L. monocytogenes, L. innocua and L. seeligeri were isolated from 76.9%, 23.1% and 23.1% of influent, 38.5%, 46.2% and 7.7% of effluent, 84.6%, 69.2% and 46.2% of raw sludge, 69.2%, 76.9% and 0% of stabilized sludge and 46.2%, 7.7% and 0% of dried sludge samples, respectively. The efficiency of wastewater treatment processes, digester tank and drying bed in removal of L. monocytogenes were 69.6%, 64.7% and 73.4%, respectively. All phenotypically identified L. monocytogenes were further confirmed by PCR method. Conclusion: Application of sewage sludge in agricultural farms as fertilizer may result in bacteria spreading in agriculture fields and contaminated foods with plant origin. This may cause a risk of spreading disease to human and animals. Using parameters such as BOD 5 is not sufficient standard for the elimination of pathogenic microorganisms.
Health Science Monitor
The rapid industrial development and agricultural growth and the indiscriminate production of pol... more The rapid industrial development and agricultural growth and the indiscriminate production of pollutants have faced problems for human societies and the environment .Accumulation and pollution of heavy metals in the environment are the main important problems that as a result of human activities through extraction from ore and processing for various applications has led to the release of these elements in the environment. Heavy metals are non-biodegradable, so they could accumulate in the environment and subsequently contaminate the food chain. Some heavy metals are known as carcinogens, endocrine disruptors and mutagens, and this is a serious threat for human health. Therefore, today, the removal of heavy metal pollutions from the environment has been received special attention by researchers. In the application of physicochemical methods for this purpose, there will be serious limitations such as the need for chemical substances, high cost, the need for specialized equipment and skills, changes in soil characteristics, and disruption of native soil microflora. In contrast, phytoremediation is a better solution to the problem. The use of plants and natural soil microbes to reduce the concentration or toxic effects of pollutants in the environment is called phytoremediation. It is considered as a costeffective, efficient, new, environmentally friendly and highly adoptable technology. New efficient metal superaccumulator plants are being investigated for applications in phytoremediation and plant extraction. This review article comprehensively discusses the background, concepts, processes and mechanisms in plant remediation of heavy metals.