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Progress in bioremediation of pesticide residues in the environment
Balendu Shekher Giri,Sachin Geed,Kumar Vikrant,Sang Soo Lee,Ki-Hyun Kim,Suresh Kumar Kailasa,Meththika Vithanage,Preeti Chaturvedi,Birendra Nath Rai,Ram Sharan Singh 대한환경공학회 2021 Environmental Engineering Research Vol.26 No.6
The increasing use of various pesticides (e.g., organophosphate, organochlorine, carbamates, and pyrethroid) has helped to improve agricultural productivity by minimizing the potential crop losses associated with insect attacks. Owing to their highly recalcitrant nature, most pesticides and their residues often accumulate in the environment to exert deleterious effects on human health and various ecosystems. Among a variety of remediation options, biological approaches have attracted a widespread attention for the treatment of pesticide in soil/water systems due to their environmentally benign nature. In this regard, this review article was organized to highlight the recent advancements in the application of various bioremediation approaches for the degradation/removal of pesticides from soil/water matrixes along with the catabolic capacity of microorganisms. Our discussions were expanded further to emphasize identification of specific bacterial communities/strains, such as Bacillus sp. and Pseudomonas sp. This review is expected to provide an overview of the modern biotechnological methodologies along with the associated merits and hurdles for the effective abatement of pesticides.
Progress in bioremediation of pesticide residues in the environment
Balendu Shekher Giri,Sachin Geed,Kumar Vikrant,이상수,김기현,Suresh Kumar Kailasa,Meththika Vithanage,Preeti Chaturvedi,Birendra Nath Rai,Ram Sharan Singh 대한환경공학회 2021 Environmental Engineering Research Vol.26 No.6
The increasing use of various pesticides (e.g., organophosphate, organochlorine, carbamates, and pyrethroid) has helped to improve agricultural productivity by minimizing the potential crop losses associated with insect attacks. Owing to their highly recalcitrant nature, most pesticides and their residues often accumulate in the environment to exert deleterious effects on human health and various ecosystems. Among a variety of remediation options, biological approaches have attracted a widespread attention for the treatment of pesticide in soil/water systems due to their environmentally benign nature. In this regard, this review article was organized to highlight the recent advancements in the application of various bioremediation approaches for the degradation/removal of pesticides from soil/water matrixes along with the catabolic capacity of microorganisms. Our discussions were expanded further to emphasize identification of specific bacterial communities/strains, such as Bacillus sp. and Pseudomonas sp. This review is expected to provide an overview of the modern biotechnological methodologies along with the associated merits and hurdles for the effective abatement of pesticides.
Arijit Dutta Gupta,Balendu Shekher Giri,Eldon R Rene,Preeti Chaturvedi,Mandavi Goswami,Harinder Singh 대한환경공학회 2021 Environmental Engineering Research Vol.26 No.6
As(III) presence in low concentration (1-5 mg/L) in water presents a challenging problem in its removal. In the present study, biochar prepared by the pyrolysis of mustard cake and loaded with Fe-Mn binary oxides through hydrothermal technique was used for adsorptive removal of As(III) from water in batch and continuous modes. The synthesised biochar exhibited mesoporous structures in the range of 2-50 nm (based on BET analysis). The maximum adsorption capacity (95.7 mg/g) obtained using biochar loaded with both Fe-Mn oxides was found to be 1.4 times higher than that of pristine biochar. The adsorption equilibria was best described by Freundlich isotherm (based on R² and χ²) suggesting that the As(III) adsorption was multilayered. The external mass transfer coefficients (βL = 10<SUP>-5</SUP> cm²/s) were observed to be higher than the film (Df = 10<SUP>-7</SUP> – 10<SUP>-9</SUP> cm²/s) and intraparticle (Di = 10<SUP>-9</SUP> cm²/s) diffusivities in batch mode. In column studies, Thomas model gave the best correlation coefficient (R² > 0.95) and the adsorption was limited by external mass transfer. Kinetic rate constant decreased with increase in initial As(III) concentration and flow rate. The oxide loaded biochar exhibited reusability up to three times for As(III) removal.
Arijit Dutta Gupta,Balendu Shekher Giri,Eldon R Rene,Preeti Chaturvedi,Mandavi Goswami,Harinder Singh 대한환경공학회 2021 Environmental Engineering Research Vol.26 No.6
As(III) presence in low concentration (1–5 mg/L) in water presents a challenging problem in its removal. In the present study, biochar prepared by the pyrolysis of mustard cake and loaded with Fe-Mn binary oxides through hydrothermal technique was used for adsorptive removal of As(III) from water in batch and continuous modes. The synthesised biochar exhibited mesoporous structures in the range of 2–50 nm (based on BET analysis). The maximum adsorption capacity (95.7 mg/g) obtained using biochar loaded with both Fe-Mn oxides was found to be 1.4 times higher than that of pristine biochar. The adsorption equilibria was best described by Freundlich isotherm (based on R2 and χ2) suggesting that the As(III) adsorption was multilayered. The external mass transfer coefficients (βL = 10−5 cm2/s) were observed to be higher than the film (Df = 10−7 – 10−9 cm2/s) and intraparticle (Di = 10−9 cm2/s) diffusivities in batch mode. In column studies, Thomas model gave the best correlation coefficient (R2 > 0.95) and the adsorption was limited by external mass transfer. Kinetic rate constant decreased with increase in initial As(III) concentration and flow rate. The oxide loaded biochar exhibited reusability up to three times for As(III) removal.
Biodegradation of toluene vapor by evaporative cooler model based biofilter
Vikrant, Kumar,Nagar, Harshil,Anand, Raja,Sharma, Anjney,Lee, Sang-Hun,Giri, Balendu Shekher,Kim, Ki-Hyun,Singh, Ram Sharan The Korean Society of Analytical Science 2018 분석과학 Vol.31 No.2
The biodegradation of toluene vapor was investigated using a new type of biofilter equipped with a laboratory-scale evaporative cooler model packed with wood wool fibers (area: $360cm^2$). For the purpose of this study, the biofilter system was inoculated with Pseudomonas sp. RSST (MG 279053). The performance of this biofilter, assessed in terms of toluene removal efficiency (and elimination capacity), was as high as 99 % at a loading rate of $6g/h{\cdot}m^2$. The toluene removal efficiency decreased in an exponential manner with the increase in the loading rate. The cooler model-based biofilter was able to remove more than 99 % of toluene using Pseudomonas sp. RSST (MG 279053) as an effective inoculum. This biofilter is designed to operate under batch conditions for the removal of toluene in confined environments (e.g., automotive plants, boiler rooms in manufacturing facilities, and offshore drilling platforms).
Anamika Roy,Mamun Mandal,Sujit Das,Manoj Kumar,Robert Popek,Amit Awasthi,Balendu Shekher Giri,Kartick Chandra Mondal,Abhijit Sarkar 대한환경공학회 2023 Environmental Engineering Research Vol.29 No.3
Recent regulations on exhaust emissions have led to an increase in non-exhaust emissions, which now surpasses exhaust emissions. Non-exhaust emissions are mainly generated from brake and tire particle abrasion, road wear, and re-suspended road dust. In Asia, non-exhaust emissions have increased significantly over the past 50 years, resulting in almost 92% of the population breathing polluted air, which accounts for 70% of air pollution related-deaths. Most Asian countries with poor air quality are developing or underdeveloped. Taking this into consideration, the current study aims to shed light on particulate pollution from non-exhaust emissions in the Asian context to assess the current status and its health consequences and provides technological solutions. The study is based on an in-depth analysis of existing reviews and research concerning non-exhaust emissions and their health impacts in Asia to pinpoint knowledge gaps. The study found that particulate pollutants had exceeded WHOs standards in many Asian countries, bringing deleterious health consequences among children and the elderly. The findings underscore the significance of future researchers efforts to devise solutions that curtail non-exhaust emissions, ultimately reducing air pollution, augmenting air quality, fostering better health outcomes, and paving way for a more sustainable future before it is too late.
Shaniv Kumar Tiwari,Ki-Hyun Kim,Ram Sharan Singh,Jechan Lee,Taejin Kim,Jurgen Mahlknecht,Balendu Shekher Giri,Manish Kumar 대한환경공학회 2023 Environmental Engineering Research Vol.29 No.3
In recent years, the building industry has looked for technological ways to protect the environment and preserve natural resources. Since the COVID-19 epidemic, there has been a shortage of building materials, which has caused construction costs to go up. This has made it more important for sustainable development to be based on the principles of the circular economy. This gives an opportunity to utilise various reliable materials as substitutes, like construction and demolition (C&D) waste. (C&D) wastes are made up of a large chunk of all solid waste, which causes many environmental problems. The most important factor in the struggle against climate change is the reduction of CO₂ emissions from the construction sector. At the same time, globally, climate change caused in part by carbon dioxide (CO₂) emissions is an important problem that requires innovative carbon sequestration strategies. Because C&D waste is alkaline-rich (e.g., calcium hydroxide and calcium-silicate-hydrate (C-S-H)), it can be used to sequester CO₂ by converting it into thermodynamically stable carbonates. Temperature, partial pressure of CO₂, time, process route, humidity, and the water-to-solid ratio (w/s) can affect the CO₂ sequestration over the C&D wastes.