文章摘要
李聪,杨金辉.层状双氢氧化物材料在染料废水中的应用进展[J].精细化工,2021,38(2):0
层状双氢氧化物材料在染料废水中的应用进展
Application progress of layered double hydroxide in dye wastewater
投稿时间:2020-06-24  修订日期:2020-09-12
DOI:
中文关键词: 层状双氢氧化物  改性  染料废水  吸附机理  吸附性能
英文关键词: layered double hydroxide  modification  dye wastewater  adsorption mechanism  adsorption performance
基金项目:国家自然科学基金项目(21177053;51174117);湖南省重点学科-土木工程资助项目(0212-002300001)
作者单位E-mail
李聪 南华大学 1549144606@qq.com 
杨金辉 南华大学 yangjinhui126@126.com 
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中文摘要:
      近年来,层状双氢氧化物(LDH)凭借其特殊的层状结构、极强的可调控性能等特点,在水处理领域得到广泛关注。LDH除用于重金属吸附外,处理染料废水也表现出独特的优势。但由于单一的LDH存在耐酸碱性差、表面官能团少、化学稳定性差等缺陷,这严重制约了其在处理染料废水方面的应用,为此,越来越多的研究者通过对LDH进行改性提高材料的吸附性能。该文归纳总结了LDH材料的常用制备及改性方法并比较了各方法的优缺点;其次,介绍了改性LDH材料对染料废水中离子的去除效果及其吸附机理,同时分析了不同环境条件(pH、接触时间、吸附剂用量等)对吸附性能的影响;最后,对改性LDH材料的应用现状做出总结并对其未来发展做出了展望。
英文摘要:
      In recent years, layered double hydroxide (LDH) has attracted much attention in the field of water treatment because of its special layered structure and highly controllable performance. In addition to being used for heavy metal adsorption, LDH also shows unique advantages in the adsorption of dyes. However, due to the shortcomings of single LDH, such as poor acid-base resistance, less surface functional groups, poor chemical stability, which restrict its application in dye wastewater treatment. To this end, more and more researchers through the modification of LDH to improve the adsorption properties of materials. In this paper, the preparation and modification methods of LDH materials are summarized, and their advantages and disadvantages are compared. Secondly, the removal effect and adsorption mechanism of ion in dye wastewater by modified LDH materials are introduced, at the same time, the influence of different environmental conditions (pH, contact time, amount of adsorbent, etc.) on the adsorption performance is analyzed. Finally, the application status of modified LDH materials is summarized, and its future development is prospected.
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