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Adsorptive behavior...
Adsorptive behavior of Fe/Zn-modified nanobiochar for arsenic removal from naturally contaminated groundwater
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- Sharma, Pushpa Kumari (author)
- Centre for Nanoscience and Nanotechnology, Aryabhatta Knowledge University, Patna 800001, Bihar, India
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- Singh, Rakesh Kumar (author)
- Centre for Nanoscience and Nanotechnology, Aryabhatta Knowledge University, Patna 800001, Bihar, India
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- Kumar, Rakesh (author)
- School of Ecology and Environment Studies, Nalanda University, Rajgir 803116, Bihar, India; Department of Biosystems Engineering, Auburn University, Auburn, AL 36849, United States
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- Kumar, Nishant (author)
- Centre for Nanoscience and Nanotechnology, Aryabhatta Knowledge University, Patna 800001, Bihar, India
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- Ghosh, Ashok (author)
- Bihar Pollution Control Board, Patna 800010, Bihar, India; Mahavir Cancer Sansthan and Research Centre, Patna 801505, Bihar, India
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- Sharma, Prabhakar (author)
- Raksh Prakriti, Jamshedpur 831012, Jharkhand, India
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- Kumar, Arun (author)
- Mahavir Cancer Sansthan and Research Centre, Patna 801505, Bihar, India
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- Bhattacharya, Prosun, 1962- (author)
- KTH,Vatten- och miljöteknik
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- Kar, Manoranjan (author)
- Department of Physics, Indian Institute of Technology Patna, Bihta, 801106, Bihar, India
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(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- English.
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In: Groundwater for Sustainable Development. - : Elsevier BV. - 2352-801X. ; 23, s. 101011-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Global groundwater is frequently discovered to have high arsenic (As) concentrations, critically endangered and potentially toxic to aquatic organisms and humans. This work investigates As(V) adsorption using raw nanobiochar (RnBC) and activated magnetic nanobiochar (AMnBC), which are synthesized via pre-treating rice straw biomass with ZnCl2 and FeCl3 and pyrolyzing at 500 °C, followed by ball milling. The highest adsorption capacity for AMnBC and RnBC was 130 μg/g and 38.67 μg/g, respectively, at alkaline water chemistry to mimic natural groundwater conditions. Different functional groups contributed by modifications are evident with As(V) adsorption using RnBC and AMnBC. Multilayer chemisorption may explain the adsorption of As(V) on biochar surfaces, as Freundulich isotherm and pseudo-second-order kinetic model are suggested. The synthesis cost for AMnBC and RnBC was $0.0147/g and $0.0099/g, respectively, which helped to determine the most effective and efficient method for As(V) adsorption. In this study, natural As-contaminated groundwater collected from Patna, Bihar (India), was treated for As(V) removal using AMnBC in natural environments. Thus, this study recommends that cost-effective modified biochar can effectively be used for As(V) elimination from naturally contaminated groundwater as well as surface water.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Keyword
- Adsorption
- Arsenic
- Biochar
- Chemisorption
- Groundwater
- Nanomaterials
Publication and Content Type
- ref (subject category)
- art (subject category)
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