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http://dx.doi.org/10.4491/KSEE.2011.33.5.353

Ammonia Removal Characteristics in Membrane Contactor System Using Tubular PTFE Membrane  

Ahn, Yong-Tae (Department of Civil and Environmental Engineering, Pennsylvania State University)
Hwang, Yu-Hoon (Department of Civil and Environmental Engineering, KAIST)
Shin, Hang-Sik (Department of Civil and Environmental Engineering, KAIST)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.5, 2011 , pp. 353-358 More about this Journal
Abstract
In this study, ammonia removal characteristics in membrane contactor system under various operating conditions were evaluated. The mass transfer coefficient was used to quantitatively compare the effect of various operation conditions on ammonia removal efficiency. Effective removal of ammonia was possible with the tubular PTFE membrane contactor system at all tested conditions. Among the various operation parameters, contact time and solution pH showed significant effect on ammonia removal mechanism. Overall ammonia removal rate was not significantly affected by influent suspended solution concentration unlike other pressure driven membrane filtration processes. Also the osmotic distillation phenomena which deteriorate the mass transfer efficiency can be minimized by preheating of strip solution. Membrane contactor system can be a possible alternative to treat high strength nitrogen wastewater by optimizing operation conditions such as stripping solution flow rate, influent wastewater temperature, and influent pH.
Keywords
Membrane Contactor; Ammonia Removal; PTFE Membrane; Osmotic Distillation;
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