Removal of arsenic from contaminated groundwater by solar-driven membrane distillation using three different commercial membranes

被引：97

作者：

Pal, Parimal ^{[1
]}

Manna, Ajay K. ^{[2
]}

机构：

[1] Natl Inst Technol, Dept Chem Engn, Environm & Membrane Technol Lab, Durgapur 713209, India

[2] Durgapur Inst Adv Technol & Management, Dept Chem Engn, Durgapur, India

来源：

WATER RESEARCH | 2010年 / 44卷 / 19期

关键词：

Solar-driven membrane distillation; Hydrophobic membrane; Direct contact membrane distillation; Cross flow module; DRINKING-WATER; MASS-TRANSFER; POLARIZATION; PERFORMANCE; OPERATIONS; TRANSPORT;

D O I：

10.1016/j.watres.2010.05.031

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Investigations on solar-driven membrane distillation (SDMD) were carried out for removal of arsenic from contaminated groundwater. Three different types of hydrophobic membranes made of polytetrafluoroethylene (PTFE) and polypropylene (PP) with surface area of 120 x 10(-4) m(2) were used as flat sheet in a direct contact membrane distillation (DcmD) set up in a cross flow module. Effects of initial arsenic concentration in the feed, feed velocity, feed temperature and distillate inlet temperature on arsenic removal efficiency and flux were studied where temperatures of feed and distillate were found to have significant effect on the flux. Almost 100% arsenic separation was achieved without wetting membrane pore even after 120 h of operation. The PTFE membrane with a flux of 49.80 kg/m(2)h was found to the best one out of the tested membranes. The study shows that solar-driven DCMD can effectively separate arsenic from groundwater using a cross flow membrane module with PTFE hydrophobic membrane. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：5750 / 5760

页数：11

共 28 条

[1] Arsenic removal by a charged ultrafiltration membrane - influences of membrane operating conditions and water quality on arsenic rejection [J].