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Activated biochar derived from Opuntia ficus-indica for the efficient adsorption of malachite green dye, Cu+2 and Ni+2 from water

Choudhary, Manisha, Kumar, Rahul, Neogi, Sudarsan·2020·Journal of Hazardous Materials

Abstract

Applicability of biochar in water treatment is gaining interest due to its sustainability and low production cost. Herein, the biochar (BC) and activated biochar (ABC) synthesized from the cladodes of Opuntia ficus-indica (OFI) cactus were evaluated as a renewable adsorbent for adsorption of organic as well as inorganic pollutants including malachite green (MG) dye, Cu+2 and Ni+2 heavy metals. The modification of biochar with NaOH resulted higher surface basicity regarding more oxygen containing functional groups on the surface. The maximum uptake of 1341 mg g-1, 49 mg g-1 and 44 mg g-1 onto activated biochar for malachite green dye, Cu+2 and Ni+2 was acquired through the best fitted Langmuir isotherm model. Pseudo-second-order and Elovich models were found to provide a suitable fit indicating towards the chemisorption of all three components. Film diffusion and chemisorption are the main steps in adsorption of MG dye and heavy metals on activated biochar. The adsorption mechanisms were also hypothesized for adsorption of MG dye, Cu+2 and Ni+2. The remarkable adsorption capacities with higher reusability characteristics for adsorption of organic pollutants as well as inorganic heavy metals entrusts this activated biochar as a potential cost-effective adsorbent to mitigate water pollution issue.

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Metadata

Authors
Choudhary, M., Kumar, R., & Neogi, S.
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2020-06
Volume
392
Pages
122441
ISSN
0304-3894 (ISSN-L)
OpenAlex
W3009606479
Cited by
431
References
69
FWCI
18.75
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Activated biochar derived from Opuntia ficus-indica for the efficient adsorption of malachite green dye, Cu+2 and Ni+2 from water. https://app.cochat.ai/papers/10.1016/j.jhazmat.2020.122441
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Choudhary, M., Kumar, R., & Neogi, S. (2020). Activated biochar derived from Opuntia ficus-indica for the efficient adsorption of malachite green dye, Cu+2 and Ni+2 from water. Journal of Hazardous Materials. https://doi.org/10.1016/j.jhazmat.2020.122441

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