Supermacroporous hybrid polymeric cryogels for efficient removal of metallic contaminants and microbes from water

被引：14

作者：

Andrabi, Syed Muntazir ^{[1
,2
]}

Tiwari, Jaya ^{[1
,2
]}

Singh, Samarjeet ^{[1
,2
]}

Sarkar, Joyita ^{[1
,2
]}

Verma, Nishith ^{[1
,3
]}

Kumar, Ashok ^{[1
,2
]}

机构：

[1] Indian Inst Technol, Ctr Environm Sci & Engn, Kanpur 208016, Uttar Pradesh, India

[2] Indian Inst Technol, Dept Biol Sci & Bioengn, Kanpur 208016, Uttar Pradesh, India

[3] Indian Inst Technol, Dept Chem Engn, Kanpur 208016, Uttar Pradesh, India

来源：

INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS | 2016年 / 65卷 / 12期

关键词：

Arsenic; chromium; cryogel column filter; Escherichia coli; water filtration; Streptococci; CHROMIUM; CHITOSAN; CHROMATOGRAPHY; GELATIN; NETWORK; MATRIX; WASTE;

D O I：

10.1080/00914037.2016.1157795

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

A supermacroporous cryogel column of chitosan-dimethylaminoethyl methacrylate (DMAEMA)-magnetite has been synthesized. The cationic and magnetic properties of chitosan/DMAEMA and magnetite, respectively, allow the adhesion of metals and microbes to the matrix. The large interconnected pores (20-100 mu m) with porosity greater than 85% of the cryogels facilitate fast water movement. At lab scale (approximately 2mL bed volume), static binding capacity of 100% (load: 4.5ppm arsenic and 2300ppm chromium) and dynamic binding capacity of 65% for arsenic (load: 58ppm) was observed. The binding capacity at pilot scale (approximately 300mL bed volume) was found to be 11.5mg arsenic and 14.22mg chromium. There was 100% binding of microbes (Escherichia coli and Streptococci) both at lab and pilot scale. The results were propitious and indicated the suitability of cryogel filter as a single device for the removal of arsenic, chromium, and microbes in field samples.

引用

页码：636 / 645

页数：10

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