(53v) Study on the Removal Efficiency of Drugs Pollution in Water Environment By Membrane Separation Technology | AIChE

(53v) Study on the Removal Efficiency of Drugs Pollution in Water Environment By Membrane Separation Technology

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Membrane separation technology has been pervasively used as the high-effective technology for water treatment. In this study, 14 trace drugs is selected to investigate their removal efficiencies and mechanisms by membrane separation technology. The results show that the removal efficiencies of most drugs are quite high (> 80 %). So, the membrane separation technology is an effective technology to enhance the drinking water quality. Steric exclusion plays a significant role in removal of neutral drugs. Among these drugs, the hydrophobicity of estradiol is the strongest which makes it easier to be adsorbed onto the membrane surface. For nine negative drugs, their rejection rates are better than the above five drugs because they are negatively charged in water. Electrostatic repulsion happens between the membrane and the molecule of these drugs, which makes the drugs fail to approach membrane surface and only small amount of drugs can pass the membrane pores into the permeate. Meanwhile, steric exclusion is also indispensable in removing negatively charged drugs. This study provides helpful and scientific support for high-effective water treatment technology applied to removing drugs pollution from drinking water and guarantees the safety of water environment and human health in the future.

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