Department Of Environmental Science And Technology
Permanent URI for this communityhttps://kr.cup.edu.in/handle/32116/84
Browse
6 results
Search Results
Item Pharmaceuticals in Aquatic Environments: Remediation Technologies and Future Challenges(CRC Press, 2023-09-12T00:00:00) Garg, Vinod Kumar; Pandey, Ashok; Kataria, Navish; Faggio, CaterinaThis book covers pharmaceutical residue dispersion in the aquatic environment and its toxic effect on living organisms. It discusses conventional and advanced remediation technologies such as the use of biomaterials for the sequestration of contaminants, nanotechnology, and phytoremediation. The book includes topics such as the removal of pharmaceutical and personal care product residues from water bodies, green chemistry, and legal regimens for pharmaceuticals in the aquatic environment. It also covers the application of modified biochar in pharmaceutical removal. FEATURES � Explores the management of the environment through green chemistry � Describes phytoremediation technology for decontamination of pharmaceutical-laden water and wastewater � Covers the detection methods and quantification of pharmaceutical residues in various contaminated sources � Discusses ecotoxicological aspects and risk assessment of pharmaceuticals in the aquatic environment � Reviews degradation and treatment technologies including nanotechnology, biomaterials, and biochar This book is meant for pharmaceutical, toxicology, and environmental science industry experts and researchers. � 2024 selection and editorial matter, Vinod Kumar Garg, Ashok Pandey, Navish Kataria and Caterina Faggio; individual chapters, the contributors.Item Rice husk biochar - A novel engineered bio-based material for transforming groundwater-mediated fluoride cycling in natural environments(Academic Press, 2023-05-24T00:00:00) Kumar, Rakesh; Sharma, Prabhakar; Sharma, Pushpa Kumari; Rose, Pawan Kumar; Singh, Rakesh Kumar; Kumar, Nishant; Sahoo, Prafulla Kumar; Maity, Jyoti Prakash; Ghosh, Ashok; Kumar, Manish; Bhattacharya, Prosun; Pandey, AshokBiochar, a promising carbon-rich and carbon-negative material, can control water pollution, harness the synergy of sustainable development goals, and achieve circular economy. This study examined the performance feasibility of treating fluoride-contaminated surface and groundwater using raw and modified biochar synthesized from agricultural waste rice husk as problem-fixing renewable carbon-neutral material. Physicochemical characterizations of raw/modified biochars were investigated using FESEM-EDAX, FTIR, XRD, BET, CHSN, VSM, pHpzc, Zeta potential, and particle size analysis were analyzed to identify the surface morphology, functional groups, structural, and electrokinetic behavior. In fluoride (F?) cycling, performance feasibility was tested at various governing factors, contact time (0�120 min), initial F? levels (10�50 mg L?1), biochar dose (0.1�0.5 g L?1), pH (2�9), salt strengths (0�50 mM), temperatures (301�328 K), and various co-occurring ions. Results revealed that activated magnetic biochar (AMB) possessed higher adsorption capacity than raw biochar (RB) and activated biochar (AB) at pH 7. The results indicated that maximum F? removal (98.13%) was achieved using AMB at pH 7 for 10 mg L?1. Electrostatic attraction, ion exchange, pore fillings, and surface complexation govern F? removal mechanisms. Pseudo-second-order and Freundlich were the best fit kinetic and isotherm for F? sorption, respectively. Increased biochar dose drives an increase in active sites due to F? level gradient and mass transfer between biochar-fluoride interactions, which reported maximum mass transfer for AMB than RB and AB. Fluoride adsorption using AMB could be described through chemisorption processes at room temperature (301 K), though endothermic sorption follows the physisorption process. Fluoride removal efficiency reduced, from 67.70% to 53.23%, with increased salt concentrations from 0 to 50 mM NaCl solutions, respectively, due to increased hydrodynamic diameter. Biochar was used to treat natural fluoride-contaminated surface and groundwater in real-world problem-solving measures, showed removal efficiency of 91.20% and 95.61%, respectively, for 10 mg L?1 F? contamination, and has been performed multiple times after systematic adsorption-desorption experiments. Lastly, techno-economic analysis was analyzed for biochar synthesis and F? treatment performance costs. Overall, our results revealed worth output and concluded with recommendations for future research on F? adsorption using biochar. � 2023 Elsevier LtdItem Pharmaceuticals in Aquatic Environments: Toxicity, Monitoring, and Remediation Technologies(CRC Press, 2023-06-29T00:00:00) Garg, Vinod Kumar; Pandey, Ashok; Kataria, Navish; Faggio, CaterinaThis reference book compiles up-to-date research about the threat and management of pharmaceutical residue dispersion in the aquatic environment. It explores the risk analysis and short- and long-term health issues created due to the ingestion of pharmaceutical-contaminated food products and drinking water. The book focuses on the methods of removal and degradation processes of pharmaceutical residues from contaminated sources. It emphasizes the importance of eco-friendly and advanced treatment technology for the sustainable management of wastewater and drinking water supply. The book is meant for industry experts and researchers in pharmaceutical science, toxicology, and environmental sciences. � 2024 selection and editorial matter, Vinod Kumar Garg, Ashok Pandey, Navish Kataria, and Caterina Faggio; individual chapters, the contributors.Item Impact and prospects of pesticides on human and environmental health(Elsevier, 2023-03-17T00:00:00) Singh, Simranjeet; Garg, Vinod Kumar; Ramamurthy, Praveen C.; Singh, Joginder; Pandey, AshokThe changing nature of pesticides has led to the evolution of advanced pesticides which become troublesome for pest control in agriculture and thereby increasing the resistivity of pesticides. Pesticide poisoning emerges either from regular intake of pesticides in minute quantities. Presently, different interventions are being explored to form a sustainable society as persistence and occurrence of pesticide in environment is imposing as major health concern among humans. Our chapter deals with different pathways and sources of pesticide contamination in environment. Efforts have been made to incorporate the different classes of pesticides and their detrimental effects on human health and environment. Here we discuss different detection method and sample extraction process to minimize the increasing level of pesticides compounds in water bodies aiming to protect environment and human health. � 2023 Elsevier Inc. All rights reserved.Item Current Developments in Biotechnology and Bioengineering: Pesticides: Human Health, Environmental Impacts and Management(Elsevier, 2023-03-18T00:00:00) Singh, Joginder; Pandey, Ashok; Singh, Simranjeet; Garg, Vinod Kumar; Ramamurthy, PraveenPesticides: Human Health, Environmental Impacts and Management considers microbial degradation and environmental management of pesticides, covers microbial options as an alternative to chemical pesticides, explores plant-microbe interactions for reduced applications of pesticides in the agricultural fields, discusses the enhancement of microbial pesticides degradation, explains function of engineered microorganisms for effective pesticide degradation, describes potential indigenous/effective microbes for effective pesticide degradation processes, and presents research on microbes for sustainable agricultural and environmental practices. � 2023 Elsevier Inc. All rights reserved.Item Co-transport and deposition of fluoride using rice husk-derived biochar in saturated porous media: Effect of solution chemistry and surface properties(Elsevier B.V., 2023-02-10T00:00:00) Kumar, Rakesh; Sharma, Prabhakar; Rose, Pawan Kumar; Sahoo, Prafulla Kumar; Bhattacharya, Prosun; Pandey, Ashok; Kumar, ManishFluoride (F?) contamination in water is a global health concern, threatening the well-being of millions. This study investigated the role of ZnCl2/FeCl3-rice husk-modified biochar (Zn-BC and Zn/Fe-BC) in treating F?-contaminated surface and groundwater under the influence of varying solution chemistry, co-existing ions, and biochar-amended through column transport experiments. Modified biochar showed maximum F? adsorption, 99.01% and 91.90% using Zn/Fe-BC and Zn-BC, respectively, than 85.87% using raw biochar (R-BC). Raw/modified biochars were characterized with FESEM-EDAX, FTIR, XRD, particle size, surface area, electro-kinetic potential, and point of zero charge analyses. Langmuir and pseudo-second-order kinetic could explain that F?-biochar interactions are dominated by chemisorption at ambient temperature while physisorption at higher temperatures. The influence of salt concentrations and co-occurring ions reduced F? sorption using Zn/Fe-BC. Increased salt strengths led to reduced electrophoretic mobility of biochar particles, i.e., biochar�biochar particles attract each other and increase the hydrodynamic diameter, which ultimately reduces the active sites on biochar for F? adsorption. Co-transport and deposition of biochar and F? in saturated porous media revealed lower mobility of biochar, and maximum F? adsorption was observed at 10 mM salt strength. Biochar transport is governed by electrostatic interactions, whereas F? transport mainly occurs through chemisorption. In rural areas, hand pumps and tube wells are generally used as source of potable water for drinking and cooking purposes; thus, biochar-mediated sand columns can be utilized for defluoridation. Thus, Zn/Fe-BC can be utilized as a potential bio-adsorbent for F?-contaminated natural surface and groundwater with optimum preparation and treatment costs. � 2023 The Authors