通过吸附到MnFeO-生物炭纳米复合材料上同时去除水中的Sb(iii)和Cd(ii)。

Simultaneous removal of Sb(iii) and Cd(ii) in water by adsorption onto a MnFeO-biochar nanocomposite.

作者信息

Wang Yu-Ying, Ji Hai-Yang, Lu Hao-Hao, Liu Yu-Xue, Yang Rui-Qin, He Li-Li, Yang Sheng-Mao

机构信息

Institute of Environment, Resource, Soil, and Fertilizer, Zhejiang Academy of Agricultural Sciences Hangzhou 310021 P. R. China

Engineering Research Center of Biochar of Zhejiang Province Hangzhou 310021 P. R. China.

出版信息

RSC Adv. 2018 Jan 16;8(6):3264-3273. doi: 10.1039/c7ra13151h. eCollection 2018 Jan 12.

In this study, a jacobsite-biochar nanocomposite (MnFeO-BC) was fabricated and used to simultaneously remove Sb(iii) and Cd(ii) from water adsorption. The MnFeO-BC nanocomposite was prepared a co-precipitation method and analyzed using various techniques. The results confirm the successful decoration of the biochar surface with MnFeO nanoparticles. The maximum Sb(iii) removal efficiency was found to be higher from bi-solute solutions containing Cd(ii) than from single-solute systems, suggesting that the presence of Cd(ii) enhances the removal of Sb(iii). The Langmuir isotherm model describes well Sb(iii) and Cd(ii) removal adsorption onto the MnFeO-BC nanocomposite. The maximum adsorption capacities are 237.53 and 181.49 mg g for Sb(iii) and Cd(ii), respectively, in a bi-solute system. Thus, the prepared MnFeO-BC nanocomposite is demonstrated to be a potential adsorbent for simultaneously removing Sb(iii) and Cd(ii) ions from aqueous solutions.

在本研究中，制备了一种锰铁氧体-生物炭纳米复合材料（MnFeO-BC），并用于通过吸附同时去除水中的Sb(iii)和Cd(ii)。MnFeO-BC纳米复合材料采用共沉淀法制备，并使用各种技术进行分析。结果证实了MnFeO纳米颗粒成功修饰在生物炭表面。发现从含Cd(ii)的双溶质溶液中去除Sb(iii)的最大效率高于单溶质体系，这表明Cd(ii)的存在增强了Sb(iii)的去除。Langmuir等温线模型很好地描述了Sb(iii)和Cd(ii)在MnFeO-BC纳米复合材料上的吸附去除情况。在双溶质体系中，Sb(iii)和Cd(ii)的最大吸附容量分别为237.53和181.49 mg/g。因此，所制备的MnFeO-BC纳米复合材料被证明是一种从水溶液中同时去除Sb(iii)和Cd(ii)离子的潜在吸附剂。