膜科学与技术

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Discussion about ultrafiltration membranes retention performance by D reagent method

Authors： NI Chengfeng,AN Shulin,XIAO Changfa

Units： State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387 China

KeyWords： Dragendoff method; polyethylene glycol;ultrafitration membrance

ClassificationCode：TQ028

year,volume(issue):pagination： 2016,36(1):109-113

Abstract：

In this paper,polyethylene glycol is regarded as standard substance for discussing in detail,Dragendoff method is widely used for solving problems of ultrafitration membrane separation performance.We study the influences of preservation conditions by Dragendoff method for separation performance standard curve.As the storage time increases,the absorbance of the testing system will also increase.The storage temperature is directly proportional to change.Then we study the amount of D reagent dosage and the buffer solution,chromogenic reaction time.It concludes the necessery and basis of measurement complying with industry standard.Finally,a simple method of D method in industrial for separation performance is put out.

Funds：

国家重点基础研究发展计划（973计划）项目（2012CB722706).

AuthorIntro：

第一作者简介：倪澄峰（1990-），男，江苏人，硕士研究生，从事水处理和膜技术研究。＊通讯作者，Email：asl8074@163.com

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