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昆明冶金高等专科学校学报 ›› 2018, Vol. 34 ›› Issue (3): 87-91.DOI: 10.3969/j.issn.1009-0479.2018.03.016

• 环境保护与化工技术 • 上一篇    下一篇

纳米ZnO/硅藻土复合材料的制备及其光催化性能研究

张润虎1a,李 理1b,徐孝静,宁门翠1a   

  1. 1昆明冶金高等专科学校a.化工学院;b.环境工程学院,云南 昆明 650033;
    2昆明绿岛环境科技有限公司,云南 昆明 65022
  • 收稿日期:2018-03-03 出版日期:2018-06-30 发布日期:2018-06-30
  • 作者简介:张润虎(1974-),男,陕西渭南人,副教授,工学博士,主要从事工业废水处理、化工分离和催化反应等研究。
  • 基金资助:
    云南省教育厅科学研究基金:硅藻土负载纳米ZnO材料的制备及其处理染料废水基础研究(2012C174)。

Preparation and Photocatalytic Properties of Nano ZnO/Diatomite Composite Material

ZHANG Runhu1a,LI Li1b,XU Xiaojing,NING Mencui1a   

  1. 1a.Faculty of Chemical Engineering;b.Faculty of Environmental Engineering,Kunming Metallurgy College,Kunming 650033,China;
    2.Kunming Greenisland Environmental Technology Co,Ltd.,Kunming 650228,China
  • Received:2018-03-03 Online:2018-06-30 Published:2018-06-30

摘要: 印染废水中含有难被生物降解的化学成分,是较难处理的废水之一,脱色是印染废水处理首先要解决的问题。通过共沉淀法制备得到纳米ZnO/硅藻土复合材料。从材料投加量、接触时间、有机染料浓度、pH值和温度等方面考察了该复合材料对有机染料亚甲基蓝的吸附及光催化降解性能。实验研究表明,在光照条
件下,该复合材料对有机染料亚甲基蓝的去除效果显著优于普通硅藻土;在一定强度紫外灯照射下,材料投加量与有机染料溶液配比为0.1g/100mL时,处理效率最优,该材料与有机染料溶液接触6h脱色率约为50%,接触24h脱色率约为100%;有机染料浓度、染料溶液pH值和溶液温度等条件对材料脱色率效率的影响较为显著。

关键词: 纳米ZnO, 硅藻土, 光催化

Abstract: Printing and dyeing waste water contains chemical components that are difficult to be biodegraded,and it is one of the more difficult wastewaters.Decolorization is the first problem to be solved in the treatment of printing and dyeing wastewater.The nano-ZnO/diatomite composite material was prepared by coprecipitatio nmethod.The adsorption and photo catalytic degradation properties of the composites on methylene blue were investigated in terms of dosage,contact time,organic dye concentration,pH value and temperature.The results show that the removal efficiency of methylene blue is better than that of the ordinary diatomite under the light conditions.Experiments show that under a certain intensity of UV lamp irradiation,when the dosage of material and organic dye solution ratio is 0.1g/100mL,the treatment efficiency is the best.The decolorization rate of the material in contact with the organic dye solution for 6h is about 50%,and the decolorization rate of the contact 24h is about 100%.The concentration,pH and temperature of the dye solution have a significant effect on the efficiency of the decolorization rate of the material.

Key words: nano-ZnO, diatomite, photo catalytic

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