| Assessment of semi-empirical mass transfer correlations for pervaporation treatment of wastewater contaminated with chlorinated hydrocarbons |
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| 作者姓名： | LIU Sean X. |
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| 作者单位： | Department of |
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| 基金项目： | Project supported by the U.S. Environmental Protection Agency and New Jersey Agricultural Experiment Station at Rutgers University |
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| 摘 要： | INTRODUCTION Chlorinated hydrocarbons, a class of widely used dry-cleaning liquids, industrial organic solvents, and degreasers, increasingly find their way into drinking water sources, thus posing a very serious health and environmental problem (Love and Eliers, 1982). These organic solvents are known for their stability in the environment and cancer-causing po- tency and cannot be effectively and economically eliminated by current conventional treatment tech- nologies. One of the few av…
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| 关 键 词： | 氯代烃类 传质 全蒸发过程 废水处理 |
| 收稿时间： | 2006-05-18 |
| 修稿时间： | 2006-07-19 |
Assessment of semi-empirical mass transfer correlations for pervaporation treatment of wastewater contaminated with chlorinated hydrocarbons |
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| LIU Sean X..Assessment of semi-empirical mass transfer correlations for pervaporation treatment of wastewater contaminated with chlorinated hydrocarbons[J].Journal of Zhejiang University Science,2006,7(11):1911-1916. |
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| Authors: | Sean X Liu Ming Peng |
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| Institution: | (1) Department of Food Science, Rutgers University, New Brunswick, NJ 08901-8520, USA |
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| Abstract: | Assessment of mass transfer characteristics of pervaporation (PV) treatment of wastewater contaminated with chlorinated hydrocarbons
is of great importance for water treatment plant operators conducting initial evaluation, process optimization, and process
economics. While a membrane plays a central role in pervaporation processes and separation efficiency, the mass transfer in
the liquid layer next to the membrane surface is of equal, if not greater importance. It is one of the few process parameters
that can be adjusted in situ to manipulate the outcome of a pervaporation process. In this study, a bench scale pervaporation
experiment of removing a common chlorinated hydrocarbon from water was carried out and the results of it were compared to
the ones based on well-known semi-empirical correlations. The mass transfer coefficients from the experiments, ranging from
0.8×10−5∼2.5×10−5 m/s under the operating conditions, are higher than those predicted by the correlation. The corresponding separation factors
under varying flow velocities are determined to be between 310∼950.
Project supported by the U.S. Environmental Protection Agency and New Jersey Agricultural Experiment Station at Rutgers University |
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| Keywords: | Chlorinated hydrocarbon Mass transfer Pervaporation Wastewater treatment |
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