Enhanced Cr(VI) removal by zero-valent iron coupled with weak magnetic field: Role of magnetic gradient force

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• 作者：Jinxiang Li^a ; ^{ljx870616@126.com} ; Hejie Qin^a ; ^{chinhj@foxmail.com} ; Wei-xian Zhang^a ; ^{zhangwx@tongji.edu.cn} ; Zhong Shi^b ; ^{shizhong@tongji.edu.cn} ; Dongye Zhao^c ; ^{dzhao@eng.auburn.edu} ; Xiaohong Guan^a ; ^{guanxh@tongji.edu.cn}
• 关键词：Zero-valent iron ; Weak magnetic field ; Cr(VI) removal ; Magnetic gradient force ; Coupled effect
• 刊名：Separation and Purification Technology
• 出版年：2017
• 出版时间：4 April 2017
• 年：2017
• 卷：176
• 期：Complete
• 页码：40-47
• 全文大小：1081 K
• 卷排序：176

文摘

The improving-effect of WMF on Cr(VI) removal by ZVI depended on the MF intensity. The removal of Cr(VI) by non-ferromagnetic Zn0 was not affected by WMF. WMF was more beneficial to Cr(VI) removal by ZVI with smaller particle size. Corrosion products were localized on surface of ZVI spheres in the presence of WMF. FΔBFΔB was the major driving force for WMF effect on Cr(VI) removal by ZVI.