Removal of Pb(II), Cu(II), and Cd(II) from aqueous solutions by biochar derived from KMnO4 treated hickory wood

Bioresource Technology
Hongyu WangKai Yang

Abstract

In this work, a novel approach was developed to prepare an engineered biochar from KMnO4 treated hickory wood through slow pyrolysis (600°C). Characterization experiments with various tools showed that the engineered biochar surface was covered with MnOx ultrafine particles. In comparison to the pristine biochar, the engineered biochar also had more surface oxygen-containing functional groups and much larger surface area. Batch sorption experiments showed that the engineered biochar had strong sorption ability to Pb(II), Cu(II), and Cd(II) with maximum sorption capacities of 153.1, 34.2, and 28.1mg/g, respectively, which were significantly higher than that of the pristine biochar. Batch sorption experiments also showed that the dosage, initial solution pH, and ionic strength affected the removal of the heavy metals by the biochars. The removal of the metals by the engineered biochar was mainly through surface adsorption mechanisms involving both the surface MnOx particles and oxygen-containing groups.

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Citations

Apr 14, 2016·Environmental Science and Pollution Research International·Honghong LyuQilin Wang
May 2, 2016·Bioresource Technology·Xiao-Fei TanJiang Li
Dec 31, 2017·Environmental Science and Pollution Research International·Alfonso Rodríguez-VilaTom Sizmur
Jan 27, 2018·Environmental Science and Pollution Research International·Xiaolan HuLi Long
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Sep 30, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Fengfeng MaJingru Diao
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Jan 16, 2019·Environmental Science and Pollution Research International·Guangcai YinGuiyou Tang
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Jan 10, 2020·Environmental Science and Pollution Research International·Jiaqi ZhangYingwen Xue
Jan 30, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Haihua ZhaoXiaolan Hu
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