文献类型：期刊文献

英文题名：High efficiency removal of Pb(II) in aqueous solution by a biochar-supported nanoscale ferrous sulfide composite

作者：Chen, Chengguang[1];Qiu, Muqing[2]

机构：[1]Shaoxing Univ, Yuanpei Coll, Sch Architectural Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Peoples R China

年份：2021

卷号：11

期号：2

起止页码：953

外文期刊名：RSC ADVANCES

收录：SCI-EXPANDED(收录号：WOS:000607364700038)、、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (No. 21876115) and Natural Science Foundation of Zhejiang Province, China (LGF20C030001). The authors were very grateful for the support. C. G. Chen (Associate Professor) conducted all the experiments and wrote the manuscript. M. Q. Qiu (Professor) revised the manuscript.

语种：英文

外文摘要：A biochar-supported nanoscale ferrous sulfide composite was prepared and applied for the treatment of Pb(II) ions in aqueous solution. The experimental results of SEM, EDS, XRD, and FT-IR spectroscopy clearly implied that the biochar was successfully modified with nanoscale ferrous sulfide composite. The maximum adsorption capacity of Pb(II) ions by FeS@biochar reached 88.06 mg g(-1). Compared with other reported adsorbents, the removal rate of Pb(II) ions by FeS@biochar was higher. The pseudo-second-order kinetic model and Langmuir isotherm model could better fit the experimental adsorption results. The removal rate of Pb(II) ions by FeS@biochar was controlled by the chemical reaction and monolayer adsorption on the surface of FeS@biochar. The mechanisms of Pb(II) removal from aqueous solutions by biochar involved electrostatic attraction, hydrogen bonding, physical adsorption, ion exchange, and chemical precipitation. Additionally, the chemical stability and reusability of FeS@biochar were good. It is also an environment-friendly material for low-cost wastewater treatment.