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  

Preparation of amorphous zero-valent iron supported by waste stone powder and its removal of Cr(VI)from water

作　　者：高燕 王海莉 项园 符婷婷 全凤娇 李建芬 裴超 申文娟 GAO Yan;WANG Haili;XIANG Yuan;FU Tingting;QUAN Fengjiao;LI Jianfen;PEI Chao;SHEN Wenjuan(School of Chemical and Environmental Engineering,Wuhan Polytechnic University,Wuhan 430023,China;Minth Group CO.,Ltd.,Shanghai 201707,China)

机构地区：[1]武汉轻工大学化学与环境工程学院,武汉430023 [2]敏实集团有限公司,上海201707

出　　处：《华中师范大学学报(自然科学版)》2025年第1期18-25,共8页Journal of Central China Normal University:Natural Sciences

基　　金：湖北省教育厅科学研究计划资助项目(D20221610).

摘　　要：自“双碳”目标提出以来,我国生态环境保护进入了以废弃物循环利用为重点战略方向的关键时期.零价铁在重金属污染治理领域表现出广泛应用前景,但零价铁活性常因其磁性团聚而降低,制备负载型零价铁可增加铁颗粒的分散度.目前研究表明,非晶体零价铁通常具有比晶体零价铁更优异的性能,因此,该研究以廉价易得的废弃石粉(WSP)为载体,以乙二胺为诱导剂,通过液相还原法合成负载型非晶零价铁(WSP-AZVI),有效地解决了零价铁易团聚的问题,同时将Cr(VI)的去除百分率从49%提升至100%.进一步的条件优化结果表明,当WSP-AZVI的含铁量为10%,铁与乙二胺的比例为1∶1时,可获得最佳的Cr(VI)去除效果,该研究为零价铁的进一步广泛应用推广提供了理论指导.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.

关 键 词：非晶 零价铁 六价铬 电镀废水 

分 类 号：TB303[一般工业技术—材料科学与工程]