PU基多孔吸附剂对印染废水污染物的同步吸附性能  

Simultaneous adsorption performance of PU-based porous adsorbents for pollutants in printing and dyeing wastewater

作　　者：郭亿瑞 宋亿 钟雨心 刘永红[1] 王宁[1] GUO Yirui;SONG Yi;ZHONG Yuxin;LIU Yonghong;WANG Ning(School of Environmental and Chemical Engineering,Xi’an Polytechnic University,Xi’an 710048,China)

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《纺织高校基础科学学报》2022年第3期71-79,共9页Basic Sciences Journal of Textile Universities

基　　金：国家自然科学基金(22008188);陕西省科技厅重点研发项目(2020SF-413);柯桥纺织产业创新研究院产学研协同创新项目(19KQZD06)。

摘　　要：聚苯胺二氧化钛纳米吸附剂作为一种优良的吸附材料,因其粉末状回收困难而难以实现工业化应用。以聚苯胺(PANI)、TiO_(2)、聚氨酯(PU)等生物载体为原料,采用原位复合法制备PU基聚苯胺二氧化钛(PU-P/T)多孔复合材料。利用SEM、BET、XRD、ZETA电位和FT-IR等表征复合材料的结构;通过模拟混合废水和实际印染废水考察其混合吸附行为和连续吸附性能。结果表明:共聚物在PU表面成功聚合,比表面积增加到32.8765 m^(2)/g;在pH为中性时,对偶氮荧光桃红(ARG)、亚甲基蓝(MB)、Cr(Ⅵ)的同步去除率均在80%以上,氨氮(NH_(4)^(+)-N)、硝态氮(NO_(3)^(-)-N)、总磷(TP)和COD同步去除率均在35%以上;连续吸附后,吸附剂PU-P/T对模拟印染废水中ARG、MB、Cr(Ⅵ)、NO_(3)^(-)-N及色度的同步去除率均在60%以上。因此,PU-P/T是一种潜在的工业吸附剂。As an excellent adsorption material,polyaniline titanium dioxide nano-adsorbent is difficult to realize industrial application because of its difficulty in powder recovery.PU-based polyaniline-titanium dioxide(PU-P/T)porous composites were prepared by in-situ composite method with polyaniline(PANI),TiO_(2)and polyurethane(PU)biological carriers as raw materials,their structures were characterized by SEM,bet,XRD,zeta potential and FT-IR.The mixed adsorption behavior,continuous adsorption performance were investigated in simulated mixed wastewater and actual printing and dyeing wastewater.The results show that the copolymer is successfully polymerized on the surface of PU and the specific surface area increased to 32.8765 m^(2)/g.When pH is neutral,the synchronous removal rates of ARG,MB,Cr(Ⅵ)are all more than 80%,and the synchronous removal rates of NH_(4)^(+)-N,NO_(3)^(-)-N,TP and COD are all more than 35%.After continuous adsorption,the simultaneous removal rates of ARG,MB,Cr(Ⅵ),NO_(3)^(-)-N and chromaticity in simulated printing and dyeing wastewater by adsorbent PU-P/T are all more than 60%.Thus,PU-P/T is a promising industrial adsorbent for the removal of pollutants in wastewater.

关 键 词：印染废水 聚氨酯脲(PU) 同步吸附 生物载体 

分 类 号：TS190.3[轻工技术与工程—纺织化学与染整工程] X791[轻工技术与工程—纺织科学与工程]