Biowaste-derived Ni/NiO decorated-2D biochar for adsorption of methyl orange.

Autor: Mon PP; Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India. Electronic address: cy20resch16002@iith.ac.in., Cho PP; Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India., Chandana L; Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India., Srikanth VVSS; School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad, 500046, Telangana, India., Madras G; Department of Chemical Engineering, Indian Institute of Technology, Hyderabad, Kandi, 502285, Telangana, India., Ch S; Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India. Electronic address: csubbu@iith.ac.in.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2023 Oct 15; Vol. 344, pp. 118418. Date of Electronic Publication: 2023 Jun 24.
DOI: 10.1016/j.jenvman.2023.118418
Abstrakt: Eco-friendly carbothermal techniques were used to synthesize nanocomposites of biowaste-derived Ni/NiO decorated-2D biochar. The use of chitosan and NiCl 2 in the carbothermal reduction technique was a novelty to synthesize the Ni/NiO decorated-2D biochar composite. Potassium persulfate (PS) was found to be activated by Ni/NiO decorated-2D biochar, which is thought to oxidize organic pollutants through an electron pathway designed by the reactive complexes formed between PS and the Ni/NiO biochar surface. This activation led to the efficient oxidation of methyl orange and organic pollutants. Analyzing Ni/NiO decorated-2D biochar composite before and after the methyl orange adsorption and degradation procedure allowed us to report on the process of its elimination. The Ni/NiO biochar with PS activation showed higher efficiency than Ni/NiO decorated-2D biochar composite as this material was able to degrade over 99% of the methyl orange dye. The effects of initial methyl orange concentration, dosages effect, solution pH, equilibrium studies, kinetics, thermodynamic studies, and reusability were examined and evaluated on Ni/NiO biochar.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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