杭锦土负载纳米零价铁对水中甲基橙的脱色研究

doi:10.11894/1005-829x.2015.35(12).034

工业水处理 ›› 2015, Vol. 35 ›› Issue (12): 34-39. doi: 10.11894/1005-829x.2015.35(12).034

杭锦土负载纳米零价铁对水中甲基橙的脱色研究

刘文芳^1,2, 赵颖^2,3, 蔡亚君¹, 李曹乐², 李国文², 李晓光²

1. 武汉纺织大学环境工程学院, 湖北武汉 430073;
2. 中国环境科学研究院, 北京 100012;
3. 广东省浩蓝环保水污染治理院士工作站, 广东广州 510630

收稿日期:2015-11-03 出版日期:2015-12-20 发布日期:2015-12-26
通讯作者: 赵颖,E-mail:zhaoying@craes.org.cn。 E-mail:zhaoying@craes.org.cn
作者简介:刘文芳(1987-),硕士研究生。E-mail:wenfangl88@163.com。
基金资助:
村镇环境综合整治重大科技工程(2012BAJ21B00)

Study on the decolorization of methyl orange in aqueous solution using Hangjin clay-supported nanoscale zero-valent iron

Liu Wenfang^1,2, Zhao Ying^2,3, Cai Yajun¹, Li Caole², Li Guowen², Li Xiaoguang²

1. School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China;
2. Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
3. CNHOMELAND Environmental Protection Water Pollution Governance Academician Workstation, Guangzhou 510630, China

Received:2015-11-03 Online:2015-12-20 Published:2015-12-26

摘要/Abstract

摘要：

以杭锦土、FeCl₃·6H₂O和NaBH₄为原料,采用液相还原法制备了杭锦土负载纳米零价铁(NZVI@HJ),扫描电镜和XRD表征结果显示纳米零价铁均匀分散在杭锦土上。对甲基橙模拟废水进行吸附降解实验,考察投加量、负载比、pH、初始浓度、温度等因素对NZVI@HJ降解甲基橙效果的影响。结果表明:在投加量为3 g/L、纳米零价铁与杭锦土的最佳负载比(质量比)为1:3、pH为3.0、温度为25℃条件下反应10 min,NZVI@HJ对甲基橙的去除率达到97.77%。NZVI@HJ对甲基橙的降解过程遵循一级反应动力学规律。

关键词: 杭锦土, 纳米零价铁, 甲基橙, 脱色

Abstract:

Hangjin clay-supported nanoscale zero-valent iron(NZVI@HJ) has been synthesized by liquid phase re-duction method,using Hangjin clay,FeCl₃·6H₂O and NaBH₄ as raw materials. The scanning electron microscopy and X-ray diffraction images of NZVI@HJ show that nanoscale zero-valent iron particles are evenly dispersed on the sur-face of Hangjin clay. The adsorption and degradation experiments of methyl orange(MO) simulated wastewater are conducted. The influences of factors,such as dosage,loading ratio,pH,initial concentration,temperature,etc. on the degradation effect of MO are investigated. The results show that when the dosage is 3 g/L,the optimum loading ratio(mass fraction) of zero-valent iron and Hangjin clay is 1:3,pH=3.0,temperature is 25℃,and reaction time is 10 min,the MO removing rate by NZVI@HJ is 97.77%. Furthermore,the MO degradation process by NZVI@HJ follows the first-order reaction kinetics rule.

Key words: Hangjin clay, nanoscale zero-valent iron, methyl orange, decolorization

中图分类号:

X703

刘文芳, 赵颖, 蔡亚君, 李曹乐, 李国文, 李晓光. 杭锦土负载纳米零价铁对水中甲基橙的脱色研究[J]. 工业水处理, 2015, 35(12): 34-39.

Liu Wenfang, Zhao Ying, Cai Yajun, Li Caole, Li Guowen, Li Xiaoguang. Study on the decolorization of methyl orange in aqueous solution using Hangjin clay-supported nanoscale zero-valent iron[J]. INDUSTRIAL WATER TREATMENT, 2015, 35(12): 34-39.

https://www.iwt.cn/CN/Y2015/V35/I12/34

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杭锦土负载纳米零价铁对水中甲基橙的脱色研究

Study on the decolorization of methyl orange in aqueous solution using Hangjin clay-supported nanoscale zero-valent iron

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杭锦土负载纳米零价铁对水中甲基橙的脱色研究

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