Publication detail

An efficient waste garlic skins biochar nanocomposite: An advanced cleaner approach for secondary waste utilisation

Oraon, A., Ram, M., Gupta, A.K., Dutta, S., Saxena V.K., Gaurav, G.K.

Original Title

An efficient waste garlic skins biochar nanocomposite: An advanced cleaner approach for secondary waste utilisation

Type

journal article in Web of Science

Language

English

Original Abstract

A cleaner prospective has been developed using a synthesis of Fe3O4-waste garlic skins biochar nanocomposites (Fe3O4-WGSBC NCs) were developed using two-step methods (a) green method followed by (b) pyrolysis process. The synthesised Fe3O4-WGSBC NCs were characterised using different techniques, and the outcomes of the characterisation reveal that Fe3O4 was well distributed on the waste garlic skins biochar and the average size of NPs was ∼ 20–30 nm. The XPS technique identified the phase of Fe3O4 and various functional groups that contain biochar surface, which was responsible for Cr(VI) adsorption from an aqueous solution. The maximum adsorption capacity of NCs was achieved at pH2 within 180 min reaction time at optimised NCs dose and Cr(VI) concentration. The model equations related to isotherm, kinetic, and mass transfer were also analysed and well suited to experimental adsorption data and found the best suitable model. Design a batch single-stage adsorber was also drafted to treat Cr(VI) contaminated water from a large-scale industry. A possible mechanism that describes the adsorption phenomenon was also discussed. The effect of temperature and their energy-related constant such as Gibbs energy, enthalpy, for Cr(VI) adsorption by Fe3O4-WGSBC were also calculated and reported in the results. In addition, spent adsorbent after the 4th cycle was re-used for various dyes adsorption at pH 3, 7, and 10 after some thermal modification.

Keywords

Fe3O4 NPs; Garlic skins Biochar; Green synthesis; Nanocomposites; Adsorption; Cleaner approach

Authors

Oraon, A., Ram, M., Gupta, A.K., Dutta, S., Saxena V.K., Gaurav, G.K.

Released

15. 10. 2022

Publisher

Elsevier Ltd

ISBN

0167-7322

Periodical

JOURNAL OF MOLECULAR LIQUIDS

Number

364

State

Kingdom of the Netherlands

Pages from

119997

Pages to

119997

Pages count

20

URL

https://www.sciencedirect.com/science/article/pii/S0167732222015355

BibTex

@article{BUT179151,
  author="Gajendra Kumar {Gaurav}",
  title="An efficient waste garlic skins biochar nanocomposite: An advanced cleaner approach for secondary waste utilisation",
  journal="JOURNAL OF MOLECULAR LIQUIDS",
  year="2022",
  number="364",
  pages="119997--119997",
  doi="10.1016/j.molliq.2022.119997",
  issn="0167-7322",
  url="https://www.sciencedirect.com/science/article/pii/S0167732222015355"
}