纤维素在染料废水处理中的应用

Application of cellulose in dye wastewater treatment

染料废水的排放不仅使水生生物受到威胁,还严重危害着人类健康。因此,染料废水处理已成为环境治理的一个重点研究方向。作为具有很高的比表面积和孔隙率的世界上存量最丰富的可再生材料,纤维素已被广泛用于染料污水的净化中。为此,介绍了纤维素的改性及其在阴、阳离子染料吸附中的应用现状。在此基础上,还着重描述了温度、pH、染料初始浓度和共存离子对纤维素吸附性能的影响规律。最后,总结了近年来纤维素吸附剂在染料吸附方面取得的成果和存在的问题,并展望了其未来的发展趋势。

The discharge of dye wastewater not only threatens aquatic life but also seriously endangers human health.Therefore,dye wastewater treatment has become an important research direction of environmental management.Cellulose,the most abundant renewable material in the world,has been widely used in the purification of dyes wastewater.The modification of cellulose and the selective adsorption mechanism of anionic dyes were introduced.On this basis,the effects of the amount of temperature,pH,the initial concentration of dye and co-existing ion on the adsorption properties and the application status were described emphatically.Finally,the achievements and problems in dye adsorption of cellulose adsorbent in recent years were summarized,and the development trend of cellulose adsorbent in the future was forecasted.