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首页> 外文期刊>Separation and Purification Technology >Removal of nonsteroidal anti-inflammatory drugs (NSAIDs) by electrocoagulation-flotation with a cationic surfactant
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Removal of nonsteroidal anti-inflammatory drugs (NSAIDs) by electrocoagulation-flotation with a cationic surfactant

机译：通过阳离子表面活性剂的电凝浮选去除非甾体类抗炎药（NSAIDs）

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An electrocoagulation flotation (ECF) process was used to remove selected nonsteroidal anti-inflammatory drugs (NSAIDs), specifically diclofenac, ibuprofen, and ketoprofen, from water. A cationic surfactant, cethyltrimethyl ammonium bromide (CTAB), was added to the solution as a collector and frother. Without the addition of the cationic surfactant, the removal of NSAIDs in a single-NSAID solution was in the range of 10-45%; it decreased to approximately 10% in multiple-NSAID systems. However, after adding a stoichiometric amount of CTAB, the removal of NSAIDs significantly improved in single-NSAID systems. For multiple-NSAID removal, the concentration of CTAB required to achieve ideal removal was equal to the sum of the molar concentrations of all the NSAIDs. In addition, a high current density produced smaller bubbles, thus enhanced the electro-flotation and achieved better removal performance. Removal of multiple-NSAIDs in actual hospital wastewater was significantly lower due to interference by oils and other hydrophobic substances. (C) 2015 Published by Elsevier B.V.
机译：电凝浮选（ECF）工艺用于从水中去除选定的非甾体抗炎药（NSAID），特别是双氯芬酸，布洛芬和酮洛芬。将阳离子表面活性剂溴化乙基三甲基铵（CTAB）作为收集剂和起泡剂添加到溶液中。在不添加阳离子表面活性剂的情况下，单一NSAID溶液中NSAID的去除率为10-45％;在多个NSAID系统中，它减少到大约10％。但是，在添加化学计量的CTAB之后，单NSAID系统中NSAID的去除明显改善。对于多次NSAID去除，实现理想去除所需的CTAB浓度等于所有NSAID的摩尔浓度之和。另外，高电流密度产生较小的气泡，从而增强了电浮选并实现了更好的去除性能。由于油类和其他疏水性物质的干扰，实际医院废水中多种非甾体抗炎药的去除率明显降低。 （C）2015由Elsevier B.V.发布

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