文献类型：期刊文献

中文题名：弱磁场强化零价铁去除孔雀石绿的动力学影响

英文题名：Kinetic Influence on Removal of Malachite Green by Zero-valent Iron Enhanced byWeak Magnetic Field

作者：吴倩[1];薛媛媛[1];张玉婷[1];梁丽萍[1,2,3]

机构：[1]绍兴文理学院土木工程学院;[2]绍兴文理学院生命科学学院;[3]绍兴文理学院,浙江省清洁染整技术研究重点实验室,浙江绍兴312000

年份：2021

卷号：47

期号：11

起止页码：81

中文期刊名：水处理技术

外文期刊名：Technology of Water Treatment

收录：CSTPCD、、北大核心、CSCD、北大核心2020、CSCD_E2021_2022

基金：浙江省自然科学基金项目(LY18E080018);国家自然科学基金项目(41807468);2020年国家级大学生创新创业训练计划项目(202010349035)。

语种：中文

中文关键词：弱磁场;零价铁;孔雀石绿

外文关键词：weak magnetic field;zero-valent iron;malachite green

中文摘要：针对零价铁(ZVI)易钝化、反应活性差的问题,研究采用弱磁场对其进行强化,以孔雀石绿(MG)作为目标污染物,考察操作条件及水中共存离子对反应的影响。结果表明,ZVI去除MG的反应速率会随着pH的下降、初始MG含量的降低、温度的升高、投量的增大而增加。在弱磁场的存在下,ZVI去除MG的反应过程符合准一级动力学,且反应速率高于无磁场时。弱磁场存在时抑制程度Ca^(2+)>Mg^(2+);HCO_(3)^(2-)与CO3^(2-)在有磁场和无磁场中,均对反应起抑制作用;与没有加入离子相比,SO_(4)^(2-)、ClO_(4)^(-)、Cl^(-)、PO_(4)^(2-)、NO_(3)^(-)在弱磁场存在时对反应没有明显的促进作用。反应后的腐蚀产物主要转化为纤铁矿。研究结果表明弱磁场通过促进ZVI的腐蚀促进MG的去除。

外文摘要：Aimed at the problems of zero-valent iron(ZVI)being easy to passivate and poor reactivity,the study used a weak magnetic field to strengthen it,with malachite green(MG)as the target pollutant,and the influence of operating conditions and coexisting ions in the water on the reaction were investigated.The results showed that,The reaction rate of ZVI to remove MG increased with the decrease of pH,the decrease of initial MG content,the increase of temperature and the increase of dosage.In the presence of weak magnetic field(WMF),the reaction process of MG removal by ZVI was consistent with pseudo first-order kinetics,and the reaction rate was higher than that without a magnetic field.In the presence of WMF,the inhibition capacity of Ca^(2+)was large than Mg^(2+).HCO_(3)^(2-)and CO3^(2-)inhibited the reaction in the presence and absence of WMF.In the presence of WMF,SO_(4)^(2-),ClO_(4)-,Cl-,PO_(4)^(2-),NO3-did not significantly promote the reaction compared with those without ions.The corrosion products after the reaction were mainly transformed into lepidocrocite.The study revealed that the WMF promoted the removal of MG by promoting the corrosion of ZVI.