Uday Som - Academia.edu (original) (raw)
Papers by Uday Som
Журнал інженерних наук, 2018
In this paper, potential of beneficial products recovery was investigated from plastic medical wa... more In this paper, potential of beneficial products recovery was investigated from plastic medical waste (PMW) by pyrolysis process. Disposable plastic is one of the chief items in the medical waste. High density polyethylene and Polypropylene is the main component of several PMW. These plastics have a higher latent as hydrocarbons sources for chemical industry. Pyrolysis of PMW was accomplished at a temperature range of 200-300 °C in a batch reactor make up of stainless steel. The chemical and physical properties of the pyrolysis liquid were much closer to the commercial fuel like diesel, petrol etc. The density is 840 kg/m3, the gross calorific value is 4.13•10 4 kJ/kg flash point is 39 °C in produces pyrolytic oil. This liquid can be used as alternative sources of fuel.
Environmental Science and Pollution Research, 2022
Tin oxide (SnO2) with versatile properties is of substantial standing for practical application, ... more Tin oxide (SnO2) with versatile properties is of substantial standing for practical application, and improved features of the material are demonstrated in the current issue through the integration of nanotechnology with bio-resources leading to what is termed as biosynthesis of SnO2 nanoparticles (NPs). This review reveals the recent advances in biosynthesis of SnO2 NPs by chemical precipitation method focused on distinct methodologies, characterization, and reaction mechanism along with a photocatalytic application for dye degradation. According to available literature reviews, numerous bio-based precursors selectively extracted from biological substrates have effectively been applied as capping or reducing agents to achieve the metal oxide NPs. The major precursor obtained from the aqueous extract of root barks of Catunaregam spinosa is found to be 7-hydroxy-6-methoxy-2H-chromen-2-one that has been proposed as a model compound for the reduction of metal ions into nanoparticles due to having highly active functional groups, being abundant in plants (67.475 wt%), easy to extract, and eco benign. In addition, the photocatalytic activity of SnO2 NPs for the degradation of organic dyes, pharmaceuticals, and agricultural contaminants has been discussed in the context of a promising bio-reduction mechanism of the synthesis. The final properties are supposed to depend exclusively upon a number of factors, e.g., particle size (< 50 nm), bandgap (< 3.6 eV), crystal defects, and catalysts dosage. With this contribution, it has been perceived not only to provide an overview of recent advances in the biosynthesis of SnO2 NPs but also to indicate the main issues in need aiming to show vision towards innovative outcomes.
European Journal of Sustainable Development Research, 2018
Health care institutions (HCIs) generate waste which can causes various injuries and infections t... more Health care institutions (HCIs) generate waste which can causes various injuries and infections to the patients, healthcare workers and also causes harm to the surrounding environment. Medical waste management (MWM) is vital for safe town development and the misconduct of medical waste may be a significant risk factor for the infectious diseases diffusion on our environment. The study carried out on 22 HCIs included public hospital, diagnostic centers, private hospitals and clinic in Jessore town of Bangladesh. This present study focused on the existing management structure, generation rate and difficulties of MWM. An inadequate number of HCIs are following the MWM method over their self-management. The findings of this study exposed that around 3 ton of medical waste is produced per day that is about 5.56% of entire waste production in this town. Over on an ordinary 0.98kg/day/bed medical waste that covering 10.89% infectious, 15.82% plastic, 3.46% sharp, 3.87% pathological, 60.94% domestic and 5.52% pharmaceutical waste were generated in this town.
Biometric gait has found importance in recognition, security, behavior learning and also in clini... more Biometric gait has found importance in recognition, security, behavior learning and also in clinical analysis. From a few decades research on gait recognition and dataset available publically focused on a single moving person. But in real time applications (such as shopping malls, railway stations, airport parking, etc.) where people walk in a group and occlusion issue affects the gait recognition performance. Considering this issue, we constructed a new database which focused on Multi-Gait (dynamic) occlusion situation. The dataset is classified into two categories i.e. first, Multi-Gait (MG), subjects walk in a group, and second, Single-Gait (SG), same subjects walk alone. Therefore, the dataset included both occluded and non-occluded gait patterns. The objective of this dataset is to analyze gait pattern variations when a person walks in a group or the same person walk separately. This dataset is also useful for researchers for identification of SG to MG.
Environmental Science and Pollution Research
Various types of plastic materials are important items of medical waste one of which is syringe w... more Various types of plastic materials are important items of medical waste one of which is syringe wastage covers an important fraction of plastic medical waste. These plastic syringes have a great potentiality to be used as liquid or gaseous fuel as well as source of hydrocarbon. High density Polyethylene and Polypropylene are the main components of syringes. The pyrolysis process was accomplished in a batch reactor. Gas Chromatography-Mass Spectrometry and Fourier Transform Infra-Red Spectroscopy analysis of pyrolysis liquid were carried out in this study which specified the presence of aromatic compounds, alkenes and alkanes. The chemical and physical properties of the pyrolysis liquid were much closer to commercial fuel like diesel and gasoline. The density, viscosity and calorific value of the liquid product were 758 kg/m 3 , 4.75 cSt and 39.561 MJ/kg. The maximum amount of liquid yields was 53 wt. % at 220 ° C and char yields 70.00 wt. % at 180 ° C respectively. The gas yield inc...
Scientific Reports
The present work is an effort to produce liquid fuel oil from plastic based medical wastes throug... more The present work is an effort to produce liquid fuel oil from plastic based medical wastes through thermal cracking process under oxidizing conditions. The mixed plastics from medical wastes were considered as a feedstock, shredded into small pieces and heated at 773 ± 10 K for 40 min with a heating rate of 20 K/min in a batch reactor for thermal cracking process. The feedstock was characterized by proximate and ultimate analysis along with thermogravimetric investigation. Moreover, chemical compositions of the liquid fuel oil were examined by FTIR and GC–MS spectroscopy. The properties of liquid product were also examined and compared to the commercial fuel oil. The average yield of brownish and sticky liquid fuel was obtained to be 52 wt% and the gross calorific value of the liquid was found 41.32 MJ/kg which is comparable to that of commercial diesel. FTIR spectrum showed characteristic absorption bands of C–H and =CH2 groups indicating presence of alkane and alkene compounds. GC...
International Journal of Sustainable Engineering
European Journal of Sustainable Development Research
Energy crisis and environmental degradation is considered most talked of the topics of modern glo... more Energy crisis and environmental degradation is considered most talked of the topics of modern global development. Medical waste has dangerous impacts on the environment. Besides, load shedding has come to be a great problem in socioeconomic development of Bangladesh for the reason that of the serious electricity crisis. This study also focused on energy recovery potentiality from plastic content of medical waste (PCMW) by converting it into electric energy. This plastic waste integrates an enormous amount of energy and consequently, attention in new renewable sources of energy from these wastes has been augmented, at the present time. Bangladesh as well as Jessore city faces an excessive environmental problem because of improper management of medical waste. This study demonstrated that the medical waste generation rate in Jessore city was found to be approximately 3 ton/day which is about 6.89% of total waste generation in this city throughout the study period. Besides, electric power generation projections from the PCMW were estimated at 74448 kWh per year respectively. This study suggested that appropriate PCMW management policy as well as awareness increasing regarding the management of PCMW is requirement for the development of existing status of living condition.
Журнал інженерних наук, 2018
In this paper, potential of beneficial products recovery was investigated from plastic medical wa... more In this paper, potential of beneficial products recovery was investigated from plastic medical waste (PMW) by pyrolysis process. Disposable plastic is one of the chief items in the medical waste. High density polyethylene and Polypropylene is the main component of several PMW. These plastics have a higher latent as hydrocarbons sources for chemical industry. Pyrolysis of PMW was accomplished at a temperature range of 200-300 °C in a batch reactor make up of stainless steel. The chemical and physical properties of the pyrolysis liquid were much closer to the commercial fuel like diesel, petrol etc. The density is 840 kg/m3, the gross calorific value is 4.13•10 4 kJ/kg flash point is 39 °C in produces pyrolytic oil. This liquid can be used as alternative sources of fuel.
Environmental Science and Pollution Research, 2022
Tin oxide (SnO2) with versatile properties is of substantial standing for practical application, ... more Tin oxide (SnO2) with versatile properties is of substantial standing for practical application, and improved features of the material are demonstrated in the current issue through the integration of nanotechnology with bio-resources leading to what is termed as biosynthesis of SnO2 nanoparticles (NPs). This review reveals the recent advances in biosynthesis of SnO2 NPs by chemical precipitation method focused on distinct methodologies, characterization, and reaction mechanism along with a photocatalytic application for dye degradation. According to available literature reviews, numerous bio-based precursors selectively extracted from biological substrates have effectively been applied as capping or reducing agents to achieve the metal oxide NPs. The major precursor obtained from the aqueous extract of root barks of Catunaregam spinosa is found to be 7-hydroxy-6-methoxy-2H-chromen-2-one that has been proposed as a model compound for the reduction of metal ions into nanoparticles due to having highly active functional groups, being abundant in plants (67.475 wt%), easy to extract, and eco benign. In addition, the photocatalytic activity of SnO2 NPs for the degradation of organic dyes, pharmaceuticals, and agricultural contaminants has been discussed in the context of a promising bio-reduction mechanism of the synthesis. The final properties are supposed to depend exclusively upon a number of factors, e.g., particle size (< 50 nm), bandgap (< 3.6 eV), crystal defects, and catalysts dosage. With this contribution, it has been perceived not only to provide an overview of recent advances in the biosynthesis of SnO2 NPs but also to indicate the main issues in need aiming to show vision towards innovative outcomes.
European Journal of Sustainable Development Research, 2018
Health care institutions (HCIs) generate waste which can causes various injuries and infections t... more Health care institutions (HCIs) generate waste which can causes various injuries and infections to the patients, healthcare workers and also causes harm to the surrounding environment. Medical waste management (MWM) is vital for safe town development and the misconduct of medical waste may be a significant risk factor for the infectious diseases diffusion on our environment. The study carried out on 22 HCIs included public hospital, diagnostic centers, private hospitals and clinic in Jessore town of Bangladesh. This present study focused on the existing management structure, generation rate and difficulties of MWM. An inadequate number of HCIs are following the MWM method over their self-management. The findings of this study exposed that around 3 ton of medical waste is produced per day that is about 5.56% of entire waste production in this town. Over on an ordinary 0.98kg/day/bed medical waste that covering 10.89% infectious, 15.82% plastic, 3.46% sharp, 3.87% pathological, 60.94% domestic and 5.52% pharmaceutical waste were generated in this town.
Biometric gait has found importance in recognition, security, behavior learning and also in clini... more Biometric gait has found importance in recognition, security, behavior learning and also in clinical analysis. From a few decades research on gait recognition and dataset available publically focused on a single moving person. But in real time applications (such as shopping malls, railway stations, airport parking, etc.) where people walk in a group and occlusion issue affects the gait recognition performance. Considering this issue, we constructed a new database which focused on Multi-Gait (dynamic) occlusion situation. The dataset is classified into two categories i.e. first, Multi-Gait (MG), subjects walk in a group, and second, Single-Gait (SG), same subjects walk alone. Therefore, the dataset included both occluded and non-occluded gait patterns. The objective of this dataset is to analyze gait pattern variations when a person walks in a group or the same person walk separately. This dataset is also useful for researchers for identification of SG to MG.
Environmental Science and Pollution Research
Various types of plastic materials are important items of medical waste one of which is syringe w... more Various types of plastic materials are important items of medical waste one of which is syringe wastage covers an important fraction of plastic medical waste. These plastic syringes have a great potentiality to be used as liquid or gaseous fuel as well as source of hydrocarbon. High density Polyethylene and Polypropylene are the main components of syringes. The pyrolysis process was accomplished in a batch reactor. Gas Chromatography-Mass Spectrometry and Fourier Transform Infra-Red Spectroscopy analysis of pyrolysis liquid were carried out in this study which specified the presence of aromatic compounds, alkenes and alkanes. The chemical and physical properties of the pyrolysis liquid were much closer to commercial fuel like diesel and gasoline. The density, viscosity and calorific value of the liquid product were 758 kg/m 3 , 4.75 cSt and 39.561 MJ/kg. The maximum amount of liquid yields was 53 wt. % at 220 ° C and char yields 70.00 wt. % at 180 ° C respectively. The gas yield inc...
Scientific Reports
The present work is an effort to produce liquid fuel oil from plastic based medical wastes throug... more The present work is an effort to produce liquid fuel oil from plastic based medical wastes through thermal cracking process under oxidizing conditions. The mixed plastics from medical wastes were considered as a feedstock, shredded into small pieces and heated at 773 ± 10 K for 40 min with a heating rate of 20 K/min in a batch reactor for thermal cracking process. The feedstock was characterized by proximate and ultimate analysis along with thermogravimetric investigation. Moreover, chemical compositions of the liquid fuel oil were examined by FTIR and GC–MS spectroscopy. The properties of liquid product were also examined and compared to the commercial fuel oil. The average yield of brownish and sticky liquid fuel was obtained to be 52 wt% and the gross calorific value of the liquid was found 41.32 MJ/kg which is comparable to that of commercial diesel. FTIR spectrum showed characteristic absorption bands of C–H and =CH2 groups indicating presence of alkane and alkene compounds. GC...
International Journal of Sustainable Engineering
European Journal of Sustainable Development Research
Energy crisis and environmental degradation is considered most talked of the topics of modern glo... more Energy crisis and environmental degradation is considered most talked of the topics of modern global development. Medical waste has dangerous impacts on the environment. Besides, load shedding has come to be a great problem in socioeconomic development of Bangladesh for the reason that of the serious electricity crisis. This study also focused on energy recovery potentiality from plastic content of medical waste (PCMW) by converting it into electric energy. This plastic waste integrates an enormous amount of energy and consequently, attention in new renewable sources of energy from these wastes has been augmented, at the present time. Bangladesh as well as Jessore city faces an excessive environmental problem because of improper management of medical waste. This study demonstrated that the medical waste generation rate in Jessore city was found to be approximately 3 ton/day which is about 6.89% of total waste generation in this city throughout the study period. Besides, electric power generation projections from the PCMW were estimated at 74448 kWh per year respectively. This study suggested that appropriate PCMW management policy as well as awareness increasing regarding the management of PCMW is requirement for the development of existing status of living condition.