纳米孔杂化材料功能基强化吸附水中重金属特性研究

项目名称： 纳米孔杂化材料功能基强化吸附水中重金属特性研究

项目编号： No.21207112

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 环境化学

项目作者： 张庆瑞

作者单位： 燕山大学

项目金额： 25万元

中文摘要： 众所周知，重金属污染是一个世界性课题。随着重金属污染控制标准日趋严格及对重金属危害认识的不断深入，迫切需要开发高效重金属深度净化技术。本项目针对现有杂化吸附材料对水中重金属深度净化过程中表现出孔道内纳米颗粒易团聚、吸附利用效率低的问题，提出以荷电功能基团修饰的多孔高分子聚合物为母板，氧化锆为无机纳米吸附剂，研制新型功能基强化的纳米杂化功能材料。探究杂化材料对水中重金属的深度净化性能及机理；揭示母版功能基团对无机纳米颗粒分散及吸附利用率的强化作用，阐明荷电功能基特有的唐南膜富集效应对重金属深度净化的作用机制，初步评价对重金属污染水的深度净化性能，从而为水中重金属的深度净化和安全控制提供理论基础和技术支持。

中文关键词： 重金属；杂化；纳米复合；吸附；

英文摘要： Water pollution by heavy metals still remains a serious environmental and public concern all over the world. Today, various strict regulations related to heavy metals are imposed as well as the increasing public awareness of negatively effects on human beings. Thus, it is significant to develop efficient technologies for enhanced removal of heavy metal ions from contaminated waters.In the present study, a novel hybrid nanocomposite is fabricated for sequestration of heavy metal ions by impregnating ZrO2 nanoparticles within a porous polymer beads and the immobilized charged groups bound to the polymeric matrix would enhance decontamination of toxic metals. The main objective of the current study is just to evaluate sorption behaviors and performance onto the hybrid adsorbents, elucidate the effect of surface functional groups of polymeric supports on encapsulated nanoparticle dispersion and sorption efficiency, as well as the potential Donnan membrane preconcentration of target metals prior to effective removal by nanosized ZrO2 sorbent. The column sorption performance for application would also be carried out to verify the enhanced removal of heavy metal ions in waters.

英文关键词： heavy metal；hybrid；nanocomposite；adsorption；