TY - JOUR
T1 - Theoretical and experimental studies on air gap membrane distillation
AU - Liu, G. L.
AU - Zhu, C.
AU - Cheung, C. S.
AU - Leung, C. W.
PY - 1998
Y1 - 1998
N2 - Air gap membrane distillation (AGMD) is an innovative membrane separation technique for pure water extraction from aqueous solutions. In this study, both theoretical and experimental investigations are carried out on AGMD of different aqueous solutions, namely, tap water, salted water, dyed solutions, acid solutions, and alkali solutions. A simple mechanistic model of heat and mass transfer associated with AGMD is developed. Simple relationships of permeate flux, total heating or cooling load and thermal efficiency of AGMD with respect to the membrane distillation temperature difference are obtained. Effects of solution concentration and the width of the air gap in AGMD are analyzed. In the experimental study, the experiments were conducted using 1 μm PTFE membrane with a membrane distillation temperature difference up to 55°C. The AGMD system yields a permeate flux of pure water of up to 28 kg/m2 h. Direct comparison of the experimental results with the proposed modeling predictions shows a fairly good match.
AB - Air gap membrane distillation (AGMD) is an innovative membrane separation technique for pure water extraction from aqueous solutions. In this study, both theoretical and experimental investigations are carried out on AGMD of different aqueous solutions, namely, tap water, salted water, dyed solutions, acid solutions, and alkali solutions. A simple mechanistic model of heat and mass transfer associated with AGMD is developed. Simple relationships of permeate flux, total heating or cooling load and thermal efficiency of AGMD with respect to the membrane distillation temperature difference are obtained. Effects of solution concentration and the width of the air gap in AGMD are analyzed. In the experimental study, the experiments were conducted using 1 μm PTFE membrane with a membrane distillation temperature difference up to 55°C. The AGMD system yields a permeate flux of pure water of up to 28 kg/m2 h. Direct comparison of the experimental results with the proposed modeling predictions shows a fairly good match.
UR - https://www.scopus.com/pages/publications/0008959296
U2 - 10.1007/s002310050267
DO - 10.1007/s002310050267
M3 - Article
AN - SCOPUS:0008959296
SN - 0947-7411
VL - 34
SP - 329
EP - 335
JO - Heat and Mass Transfer/Waerme- und Stoffuebertragung
JF - Heat and Mass Transfer/Waerme- und Stoffuebertragung
IS - 4
ER -