Production of Biochar from Coconut Husks for Adsorption of Heavy Metals in Water

Q3 Multidisciplinary Philippine Journal of Science Pub Date : 2023-07-07 DOI:10.56899/152.05.05
Cong Minh Vo, Thi Be Lien Nguyen, Thi Thuy Nguyen, Thi Kim Phung Le, Nhat Huy Nguyen
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Abstract

This study focused on the production, characterization, and application of biochar from coconuthusks as an effective and cheap adsorbent for the removal of heavy metals (i.e. Pb, Fe, Mn,and Cr) in water. The biochar was produced by pyrolysis of coconut husk at 600 °C in oxygen-free conditions and then characterized by various surface analysis technologies to explore itsphysical and chemical properties. In the metal adsorption test, the produced biochar gave highmetal removal performance with maximum adsorption capacities of 95.24 mgPb2+/g, 40.16mgFe2+/g, 35.46 mgCr6+/g, and 23.09 mgMn2+/g under pH 5, 4.5, 2, and 5.5, respectively. Studiesin kinetics, isotherms, thermodynamics, and mechanism were then conducted to understandthe adsorption process of metal ions in water using coconut husk biochar.
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利用椰子壳生产生物炭以吸附水中的重金属
本研究的重点是椰壳生物炭的生产、表征和应用,将其作为一种有效而廉价的吸附剂,用于去除水中的重金属(即铅、铁、锰和铬)。生物炭是椰壳在 600 °C 无氧条件下热解产生的,然后利用各种表面分析技术对其物理和化学性质进行了表征。在金属吸附测试中,制得的生物炭具有较高的金属去除性能,在 pH 值为 5、4.5、2 和 5.5 的条件下,最大吸附容量分别为 95.24 mgPb2+/g、40.16mgFe2+/g、35.46 mgCr6+/g 和 23.09 mgMn2+/g。然后对动力学、等温线、热力学和机理进行了研究,以了解椰壳生物炭对水中金属离子的吸附过程。
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来源期刊
Philippine Journal of Science
Philippine Journal of Science Multidisciplinary-Multidisciplinary
CiteScore
1.20
自引率
0.00%
发文量
55
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