High efficient removal and mineralization of Cr(VI)from water by functionalized magnetic fungus nanocomposites  

磁性功能化菌丝纳米材料的制备及其高效去除矿化废水中的Cr(VI)

作　　者：CHEN Run-hua CHENG Yu-ying WANG Ping LIU Zhi-ming WANG Yu-guang WANG Yang-yang 陈润华;程钰莹;王平;刘志明;王玉光;王洋洋(College of Environmental Science and Engineering,Central South University of Forestry and Technology,Changsha 410007,China;National Demonstration Center for Environmental and Planning,College of Environment&Planning,Henan University,Kaifeng 475004,China;Department of Biology,Eastern New Mexico University,Portales,NM88130,USA;School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China)

机构地区：[1]College of Environmental Science and Engineering,Central South University of Forestry and Technology,Changsha 410007,China [2]National Demonstration Center for Environmental and Planning,College of Environment&Planning,Henan University,Kaifeng 475004,China [3]Department of Biology,Eastern New Mexico University,Portales,NM88130,USA [4]School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China

出　　处：《Journal of Central South University》2020年第5期1503-1514,共12页中南大学学报（英文版）

基　　金：Project(18B195)supported by Excellent Youth Project of Hunan Education Department,China;Projects(51804353,51704093)supported by the National Natural Science Foundation of China;Project(kq1801074)supported by Key Projects of Changsha Science and Technology Plan,China;Project(2018JJ4010)supported by Hunan Provincial Natural Science Foundation of China(Joint Funds of Provincial and Zhuzhou Municipal);Project(2018JJ3885)supported by Natural Science Foundation of Hunan Province of China(Science Foundation for Youths)。

摘　　要：A hydroxyl-functionalized magnetic fungus nanocomposite(MFH@GO)was prepared by a simple one-pot method for the removal of Cr(VI)from wastewater.The adsorption behavior of MFH@GO to Cr(VI)in wastewater was discussed in detail.At pH of 5.0 and temperature of 323.15 K,MFH@GO had higher adsorption capacity to Cr(VI)(58.4 mg/g)than the unmodified fungus and GO.Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),thermogravimetry and differential thermal analysis(TG-DTA),scanning electron microscopy and energy dispersive X-Ray spectroscopy(SEM-EDX)were employed to determine the characteristics of [e-mail] showed that magnetic graphene oxide nanoparticles significantly enhanced the physiochemical properties of the fungi.In addition,the adsorption mechanisms analyses show that Cr(VI)could be reduced and mineralized into ferric chromate in residues.These results suggested that MFH@GO could be used as an promising and alternative biosorbent for removal of Cr(VI)from industrial wastewater.本文采用一种简单、温和的方法制备了富含功能基团的磁性菌丝复合材料MFH@GO,并用于处理废水中的Cr(VI)。详细地研究了MFH@GO对Cr(VI)的吸附性能。结果表明,在pH值为5.0,温度为323.15 K的条件下,MFH@GO对Cr(VI)的最大吸附量达到58.4 mg/g,远高于未改性的菌丝粉和氧化石墨烯。通过FTIR,XRD,TG-DTA,SEM和EDX等分析MFH@GO的特性及对Cr(VI)的吸附机理,结果表明,铁及氧化石墨烯纳米颗粒显著改善了菌丝的理化特性,MFH@GO能够将Cr(VI)还原成无毒的铬酸铁化合物存在于残留物中。该研究结果表明MFH@GO在处理Cr(VI)废水中具有较大的潜力和应用价值。

关 键 词：wastewater CR(VI) fungus nanocomposites BIOMINERALIZATION 

分 类 号：TQ424[化学工程] TB383.1[一般工业技术—材料科学与工程] X703[环境科学与工程—环境工程]