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纳滤膜去除水中有机锡化合物的影响因素研究 被引量:2

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摘要 采用纳滤膜过滤技术,以一丁基三氯化锡(MBT)、二丁基二氯化锡(DBT)和三丁基氯化锡(TBT)为研究对象,探究溶液的pH、操作压力、运行时间、有机锡的初始浓度以及溶液中Ca^(2+)和腐殖酸的浓度对纳滤膜的膜通量以及有机锡化合物截留率的影响。研究表明:纳滤膜对一丁基锡和三丁基锡有机锡化合物截留率在85%以上;在溶液的pH<5或pH>9时截留率低,膜通量大,在pH=7时截留率最高;截留率随操作压力增加而降低,膜通量呈直线上升,压力为0.5 MPa时为最佳;有机锡化合物初始浓度增加截留率增加,而膜通量变化不大;Ca^(2+)以及腐殖酸都会使截留率增加。通过原子力显微镜扫描发现在被使用过的纳滤膜表面致密、粗糙,有污染物沉积,其可能造成膜污染和膜通量降低。
出处 《给水排水》 CSCD 北大核心 2016年第3期31-35,共5页 Water & Wastewater Engineering
基金 国家自然科学基金项目(51108291) 住建部科技项目(2014-K5-035) 江苏省2014年普通高校研究生实践创新计划项目(SKCX14-029) 企业研究生工作站合作项目 哈尔滨工业大学城市水资源与水环境国家重点实验室开放基金项目(QA201018)
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参考文献13

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