苯乙烯-马来酸酐共聚物连续多级处理高浓度铅离子废水的应用研究  

Multi-stage treatment of Pb(Ⅱ) wastewater with high concentraction by poly(styrene-co-maleic anhydride)

作　　者：孙大力 赵佳 屈成建 李凯[1] 孙彦琳[1] Sun Dali;Zhao Jia;Qu Chengjian;Li Kai;Sun Yanlin(Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650000)

机构地区：[1]昆明理工大学化学工程学院,昆明650000

出　　处：《化工新型材料》2022年第1期303-307,312,共6页New Chemical Materials

基　　金：国家自然科学基金(51863011和21577053)。

摘　　要：铅离子废水作为国家标准标定的一类污染物,当其浓度过高或流量过大时,在不引入其他无机化学介质改变原有水质环境的条件下,处理难度徒增,短时间内难以达到排放标准。采用连续多级聚合物吸附策略来处理高浓度铅离子废水,选用马来酸酐为亲水性功能性单体,又引入苯乙烯作为疏水基团来调节整个聚合物链的亲疏水性,进而控制整体聚合物的亲疏水性质,调节其对铅离子的敏感性,实现聚合物在不同金属离子浓度下聚沉。制备了两种苯乙烯-马来酸酐共聚物(1∶1和3∶1,摩尔比)和苯乙烯-马来酸酐聚合物微球,在不加入任何其他小分子化合物的前提下,依次处理1000mg/L铅离子废液,最终可将其浓度降至0.7mg/L,达到国家排放标准,并对3种苯乙烯-马来酸酐聚合物材料对铅离子的吸附动力学和吸附热力学进行了研究,明确了其吸附机理,最终为苯乙烯-马来酸酐共聚物连续多级处理高浓度铅离子废水的应用和推广打下坚实的基础。Pb(Ⅱ),the soluble hazard classified as a kind of top dangerous level pollutant according to the Chinese integrated wastewater discharge standard,that from electrowinning,electroplating with high concentraction and high flow rate could not be totally cured by ion-exchange resin or other process using inorganic agents.The multi-stage polymer material treatment process was employed to treat the Pb(Ⅱ) wastewater,which used the polymer contained maleic anhydride as hydrophilic functional monomer to absorbe the Pb(Ⅱ),and styrene as hydrophobic agent to tune the souble property of the whole polymer chain.The poly(styrene-co-maleic anhydride) with 1∶1 and 1∶3 the molar ratio of styrene and maleic anhydride and poly(styrene-co-maleic anhydride) microsphere were fabricated to treat the 1000 mg/L Pb(Ⅱ) wastewater reducing to the 0.7 mg/L.The kinetic and thermodynamics studies were operated to determine the absorption mechanism of the three kinds of poly(styrene-co-maleic anhydride) materials.

关 键 词：聚合物 污染物 环境 吸附 动力学 热力学 

分 类 号：X52[环境科学与工程—环境工程]