中空纤维陶瓷膜修饰及去除重金属离子的研究  

A Research on The Modification of Hollow Fiber Ceramic Membrane and Heavy Metal Ions Removal

作　　者：李建荣[1,2] 徐垒[1] 肖航[1,2] 

机构地区：[1]中国科学院城市环境研究所,福建厦门361021 [2]中国科学院宁波城市环境观测研究站,浙江宁波315800

出　　处：《中国环境管理干部学院学报》2017年第1期68-71,共4页Journal of Environmental Management College of China

基　　金：宁波市自然科学基金<中空纤维陶瓷膜支撑MOFs膜处理重金属废水的研究>(2015A610247);福建省工业引导(重点)项目<低成本处理环境富磷水的吸附-膜分离装置示范>(2016H0041)

摘　　要：以铝矾土为原料,采用"相转化-高温烧结"法制备低成本中空纤维陶瓷膜。膜管直径约为2.0 mm,管壁由指状孔层和海绵层组成。通过针铁矿纳米颗粒修饰后的中空纤维陶瓷膜,其表面膜孔径由0.6~0.8μm降低到10~25 nm,而渗透通量降低到原本的1.6%左右。修饰后的中空纤维陶瓷膜通过错流过滤对水中Cd2+和Pb2+的去除率分别超过90%和77%。错流过滤受到电荷排斥作用和筛分作用。The preparation of hollow fiber ceramic membrane was prepared by phase transformation and high temperature sintering methods with bauxite as raw material.The diameter of the membrane tube is about 2 mm and the wall of tube is composed of a finger hole layer and a sponge layer.The surface pore size of hollow fiber ceramic membrane modified by goethite nanoparticles was reduced from 0.6-0.8 μm to 10-25 nm, and the permeate flux also decreased to about 1.6% of the original one.The removal efficiencies of modified hollow fiber ceramic membrane for the removal of Cd^2＋ and Pb^2＋ were more than 90% and 77%, respectively, by using of cross flow filtration.The cross flow filtration was affected by charge repulsion effect and sieving effect.

关 键 词：中空纤维陶瓷膜 针铁矿 重金属 低成本 

分 类 号：X52[环境科学与工程—环境工程]