Biochar made fromcoffee ground for adsorption of crystal violet dye

Authors

  • Bui Thi Hoa Faculty of Natural Sciences, Electric Power University, 235 Hoang Quoc Viet, Ha Noi City, 100000, Vietnam Author
  • Bui Xuan Vuong Faculty of Natural Sciences Education, Sai Gon University, 273 An Duong Vuong St, Ward 2, District 5, Ho Chi Minh City, 700000, Vietnam Author https://orcid.org/0000-0002-3757-1099

DOI:

https://doi.org/10.62638/ZasMat1317

Abstract

Biochar was prepared by anaerobic heating coffee ground at 800 °C for 3 hours. The prepared sample was used to adsorb crystal violet dye in an aqueous environment. The result showed that the biochar sample had good adsorption capacity for crystal violet dye, with the maximum adsorption capacity of 128.87 (mg/g). Thus, low-cost biochar prepared from coffee grounds has great potential to be used as an adsorbent material to remove crystal violet dye in an aqueous environment.

Keywords:

biochar, crystal violet, coffee ground, isotherm models, adsorption kinetics, wastewater treatment

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Published

18-12-2025

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Section

Scientific paper