文献类型：期刊文献

英文题名：Recovering platinum from wastewater by charring biofilm of microbial fuel cells (MFCs)

作者：Liu, Yiyang[1];Song, Pengfei[2];Gai, Ruizhe[1];Yan, Chi[1];Jiao, Yang[1];Yin, Di[1];Cai, Lankun[1];Zhang, Lehua[1,3]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[2]Thomas Nelson Community Coll, Dept Biol, Hampton, VA 23666 USA;[3]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2019

卷号：23

期号：3

起止页码：338

外文期刊名：JOURNAL OF SAUDI CHEMICAL SOCIETY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000459798200009)】；

基金：This work was supported by the National Natural Science Foundation of China (NSFC) (20906026), and the special fund of State Key Joint Laboratory of Environment Simulation and Pollution Control (18K10ESPCT).

语种：英文

外文关键词：Microbial fuel cells; Platinum; Bio-reduction; Recovery; Sludge

摘要：Reduction in and recovery of precious metals are research hotspots in the environmental engineering field. In this study, we investigated the transformation and distribution of platinum in microbial fuel cells (MFCs) and demonstrated a feasible approach to recover platinum (Pt) from wastewater with less than 16.88 mg/L platinum through charring biofilms in MFCs and generate Pt/C catalyst. The optimal reaction condition was identified, and charred biofilms were analyzed via SEM-EDS, XRD and XPS. Results showed that less than 10% of Pt was in MFC effluents, and less than 0.5% was in the cathode chamber when the influent concentration was below 16.88 mg/L. Close to 40% of Pt could be recovered. The recovery efficiency could be higher should the reactions run longer. SEM-EDS and XRD results indicated that the metallic form Pt-0 is one of the reduction products in MFCs. XPS results induced that Pt (IV) was reduced to Pt (II) and Pt-0. (C) 2018 Production and hosting by Elsevier B.V. on behalf of King Saud University.