Preparation of amorphous zero-valent iron supported by waste stone powder and its removal of Cr(VI) from water
GAO Yan1， WANG Haili1， XIANG Yuan1， FU Tingting1， QUAN Fengjiao1， LI Jianfen1， PEI Chao2， SHEN Wenjuan1
(1.School of Chemical and Environmental Engineering， Wuhan Polytechnic University， Wuhan 430023， China； 2.Minth Group CO.， Ltd.， Shanghai 201707， China)
Abstract：Since the carbon peaking and carbon neutrality goals was proposed， China's ecological civilization construction has entered a critical period with waste recycling as the key strategic direction. Zero-valent iron (ZVI) exhibited great potential in the field of heavy metal remediation in recent years. However， the reactivity of ZVI was restricted since the ZVI particles are easy to agglomerate due to the ferromagnetism. Developing loaded ZVI was demonstrated to be an efficient approach to improve the reactivity of ZVI. Recent studies reported that amorphous ZVI usually exhibited better performance than crystalline ZVI. Therefore， this study successfully synthesized amorphous ZVI supported by cheap and readily available waste stone powder (WSP-AZVI) using ethylenediamine as the inducer via liquid phase reduction method， which effectively solved the easy agglomeration problem of ZVI， and increased the Cr(VI) removal percentage from 45% to 100%. Further reaction condition factors optimization results revealed that when the iron content of WSP-AZVI was 10% and the ratio of iron to ethylenediamine was 1：1， the optimal Cr(VI) removal efficiency could be obtained. This study provides theoretical guidance for the further application and promotion of ZVI in the context of “dual carbon”， which is of great significance for achieving the “double carbon” goal.
高 燕,王海莉,项 园,符婷婷,全凤娇,李建芬,裴 超,申文娟. 废弃石粉负载型非晶零价铁的制备及其去除水中Cr(VI)的性能[J]. 华中师范大学学报(自然科学版), 2025, 59(1): 18-25.
GAO Yan,WANG Haili,XIANG Yuan,FU Tingting,QUAN Fengjiao,LI Jianfen,PEI Chao,SHEN Wenjuan. Preparation of amorphous zero-valent iron supported by waste stone powder and its removal of Cr(VI) from water. journal1, 2025, 59(1): 18-25.
2025, Vol. 59 
