文献类型：期刊文献

英文题名：Adsorption of Pb(II) in aqueous solution by the modified biochar derived from corn straw with magnesium chloride

作者：Huang, Keyuan[1]; Cai, Yuanyuan[1]; Du, Yaowei[1]; Song, Jun[1]; Mao, Huan[1]; Xiao, Yany[1]; Wang, Yue[1]; Yang, Ningcan[1]; Wang, Hai[1]; Han, Li[1]

机构：[1] School of Life Science, Shaoxing University, Shaoxing, 312000, China

年份：2020

卷号：19

期号：3

起止页码：1273

外文期刊名：Nature Environment and Pollution Technology

收录：EI(收录号：20204109319821)、Scopus(收录号：2-s2.0-85092052875)

基金：This study was financially supported by the project of science and technology plan in Zhejiang Province (LGF20C030001) and the project of science and technology plan in Shaoxing City (2017B70058).

语种：英文

外文关键词：Adsorption - Chemical contamination - Chlorine compounds - Deterioration - Human reaction time - Ions - Lead removal (water treatment) - Magnesium compounds - Wastewater treatment - Water quality - Water treatment

外文摘要：Lead wastewater not only causes deterioration of water quality but also further enters the human body through the food chain and is harmful to human health. Therefore, there is an urgent need to find an economical, simple and efficient water treatment technology to treat lead-contaminated wastewater in waterbodies. In this paper, the modified biochar derived from corn straw by magnesium chloride is prepared. Adsorption experiments of Pb(II) in solution by the modified biochar are carried out. Experiment results show that the modified biochar mainly contains C and O elements, and a large number of functional groups. The adsorption amount of Pb(II) by modified biochar reaches 5.15 mg/g under 0.2 g of modified biochar, 25 mg/L initial concentration of Pb(II) ion, reaction time of 480 min, temperature 25C and at a speed of 200 rpm. The adsorption process of Pb(II) ions in solution by the modified biochar fits on the Freundlich isotherm model. Pseudo-second order kinetic model can better describe the adsorption process of Pb(II) ion in solution by the modified biochar. The process of adsorbing Pb(II) ions in solution by modified biochar is dominated by multi-layer adsorption process and chemical adsorption process. ? 2020 Technoscience Publications. All rights reserved.