聚合氯化铝-壳聚糖复合絮凝剂的制备及其铝形态分布  

Preparation of Polyaluminum-chitosan and Morphological Distribution of Aluminum

作　　者：王郑[1] 仲米贵 黄雷[1] 薛侨[1] 林子增[1] 陈蕾[1] 

机构地区：[1]南京林业大学土木工程学院,南京210037

出　　处：《科学技术与工程》2017年第20期194-200,共7页Science Technology and Engineering

基　　金：国家自然科学基金(51608272);住房和城乡建设部科学技术项目(2016-K4-65);江苏高校优势学科建设工程(PAPD)资助

摘　　要：在不同条件下制备聚合氯化铝(PAC)和聚合氯化铝-壳聚糖复合絮凝剂(PAC-CTS),考察碱度B值、制备温度和C值对不同絮凝剂中铝形态分布的影响。铝种类的测定采用Al-Ferron逐时络合比色法。结果表明,PAC与Ferron试剂的反应速率和不同PAC中的Al_b含量均随B值的增加而明显增加,随制备温度和C值的增加而缓慢降低。结合实验过程,考虑经济性,认为制备温度为50℃、碱度B=2.0、C=1/20是最佳制备条件。Coagulant polyaluminum chloride （PAC） and coagulant polyaluminum chloride-chitosan （PAC-CTS） were prepared under different conditions.The influence of Al distribution in different coagulants of B value, preparing temperature and C value were studied.The aluminum species were measured via the application of Al-Ferron timed spectrophotometric method.It showed that the reaction rate of PAC and Ferron assay and Alb content increased with B value, which decreased with temperature and C value.Combined with experimental progress and economy, the optimum conditions of preparing PAC-CTS are T=50 ℃, B=2.0, C=1/20.

关 键 词：聚合氯化铝-壳聚糖 复合絮凝剂 铝形态分布 Al-Ferron逐时络合比色法 

分 类 号：TQ031[化学工程]