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Preparation and Characterization of Biochar Derived from Agricultural By-Products for Dye Removal

Le, Phuong Thu, Bui, Huyen Thuong, Le, Duy Ngoc, Nguyen, Thi Hue, Pham, Le Anh, Nguyen, Hong Nam, Nguyen, Quoc Son, Nguyen, Thu Phuong, Bich, Ngọc Trinh, Duong, Thi Thuy, Herrmann, Marine, Ouillon, Sylvain, Le, Thi Phuong Quynh·2021·Adsorption Science & Technology
DOI 10.1155/2021/9161904
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Abstract

In this study, biochar was derived from the agricultural by-products coconut coir (BC1) and rice husk (BC2) activated with NaOH 25%. This material was characterized through analytical methods such as SEM images, XRD, FTIR, and Raman. Analysis results indicated that the carbon structure carbon is amorphous and with many graphene layers. A high specific surface area was detected with 364.22 m 2 .g -1 for BC1 and 329.71 m 2 .g -1 for BC2 with many meso and micropores when analyzed by N 2 and CO 2 adsorption. The material also showed anionic and cationic dye adsorption capacity for textile wastewater following both Langmuir and Freundlich models where BC2 had better max adsorption capacity compared to BC1, 6.519 mg.g -1 for MO and 8.612 mg.g -1 for MB.

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  • Biochars produced from coconut coir have enhanced dye adsorption capabilities due to their significantly higher specific surface area.

    “Bio chars produced from coconut coir have enhanced dye adsorption capabilities due to their significantly higher specific surface area [139].”

    From Recent Advances in the Remediation of Textile-Dye-Containing Wastewater: Prioritizing Human Health and Sustainable Wastewater Treatment (2024) · cites this paper as [139]

    The discussion of Figure 15 says rice-husk biochar (BC2), not coconut-coir biochar (BC1), had superior dye adsorption under the tested conditions. It attributes that difference partly to BC2’s greater pore volume and BET surface area (364.22 versus 329.71 m²/g). No page number is supplied for this passage. (LLM, conf=0.90)

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Metadata

Authors
Le, P. T., Bui, H. T., Le, D. N., Nguyen, T. H., Pham, L. A., Nguyen, H. N., Nguyen, Q. S., Nguyen, T. P., Bich, N. T., Duong, T. T., Herrmann, M., Ouillon, S., & Le, T. P. Q.
Affiliations
  • University of Science and Technology of HanoiVietnam Academy of Science and Technology18 Hoang Quoc Viet RoadCau GiayHanoiVietnam
  • Institute of Environmental TechnologyVietnam Academy of Science and Technology18 Hoang Quoc Viet RoadCau GiayHanoiVietnam
  • Institute for Tropical TechnologyVietnam Academy of Science and Technology18 Hoang Quoc Viet RoadCau GiayHanoiVietnam
  • Institute of Natural Products ChemistryVietnam Academy of Science and Technology18 Hoang Quoc Viet RoadCau GiayHanoiVietnam
ORCID
Venue
Adsorption Science & Technology
Publisher
SAGE Publications
Published
2021-01
Volume
2021
ISSN
  • 0263-6174
  • 2048-4038
DOI
10.1155/2021/9161904
Cited by
56
References
2
Language
en
Licence
creativecommons.org/licenses/by/4.0/ (unspecified)
Funders
Vietnam Academy of Science and Technology (VAST07.04/20-21)

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