新型微晶纤维素基吸附剂在处理工业废水中的应用研究

Application of new microcrystalline cellulose based adsorbent in industrial wastewater treatment

微晶纤维素作为一种环境友好型材料被广泛地应用于吸附研究中。重点综述了微晶纤维素的提取以及通过接枝、交联、化学改性和复合改性等方法对微晶纤维素基吸附剂进行改性并应用在去除工业废水中染料和重金属离子等方面。通过对微晶纤维素进行改性使其吸附量提高,但也有过程繁琐、耗时长、吸附物质覆盖面少等问题。因此,在对微晶纤维素基吸附剂未来发展方向进行展望时,提出应对吸附剂进行进一步优化以扩大吸附剂吸附范围,包括废水中其他污染物等。

Microcrystalline cellulose is widely used in adsorption research as an environmentally friendly material.This paper focuses on the extraction of microcrystalline cellulose and the modification of microcrystalline cellulose based adsorbent by grafting,cross-linking,chemical modification and composite modification,and its application in the removal of dyes and heavy metal ions in industrial wastewater.The adsorption capacity of microcrystalline cellulose is improved by modification,but there are also some problems such as complicated process,long time consuming and less adsorption coverage.Therefore,in the future development of microcrystalline cellulose based adsorbents,it is proposed that the adsorbent should be further optimized to expand the adsorption range of adsorbent,including other pollutants in wastewater.