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Multicomponent Adsorption of Pollutants from Wastewater Using Low-Cost Eco-Friendly Iron-Modified Rice Husk Biochar in the Era of Green Chemistry

Author

Listed:
  • Tibamba Matthew Tichem

    (School of Ecology and Environment, Anhui Normal University, No. 1 Beijing Donglu, Wuhu 241000, China)

  • Youbao Wang

    (School of Ecology and Environment, Anhui Normal University, No. 1 Beijing Donglu, Wuhu 241000, China)

  • Raphael B. H. Gameli

    (Department of Environmental Management and Sustainability Science, Faculty of Natural Resources and Environment, University for Development Studies, Tamale P.O. Box 1350 TL, Ghana)

  • Bawa Mbage

    (Department of Chemistry Education, University of Education, Winneba P.O. Box 25, Ghana)

  • Bingbing Li

    (School of Ecology and Environment, Anhui Normal University, No. 1 Beijing Donglu, Wuhu 241000, China)

Abstract

As pollution escalates, water purification is becoming crucial, with adsorption emerging as an efficient technique. This study aimed to evaluate the effectiveness of iron-modified rice husk biochar as an adsorbent for water pollutants. The biochar was produced at a pyrolysis temperature of 500 °C and modified by FeSO 4 ·7H 2 O. Diverse adsorbent dosages were introduced to simulated wastewater containing aldrin, mercury (Hg 2+ ), lead (Pb 2+ ), and cadmium (Cd 2+ ). The solution was agitated for 60 min, then filtered, and the samples were sent for analysis. The results were promising; aldrin had a removal efficiency of 100%. The removal efficiency for Hg 2+ ranged from 99.80% to 99.96%, for Pb 2+ from 88.90% to 99.56%, and for Cd 2+ from 78.90% to 99.98%. The Freundlich adsorption isotherm best described the mono- and quaternary component systems, while the Langmuir isotherm was the best fit for the binary system. Therefore, iron-modified rice husk biochar shows potential as a sustainable and efficient adsorbent for wastewater treatment.

Suggested Citation

  • Tibamba Matthew Tichem & Youbao Wang & Raphael B. H. Gameli & Bawa Mbage & Bingbing Li, 2023. "Multicomponent Adsorption of Pollutants from Wastewater Using Low-Cost Eco-Friendly Iron-Modified Rice Husk Biochar in the Era of Green Chemistry," Sustainability, MDPI, vol. 15(23), pages 1-14, November.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:23:p:16348-:d:1288908
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