Performance of activated carbon and bentonite for adsorption of amoxicillin from wastewater: Mechanisms, isotherms and kinetics
Performance of activated carbon and bentonite for adsorption of amoxicillin from wastewater: Mechanisms, isotherms and kinetics
复制标题
DOI：
10.1016/j.watres.2009.02.039
复制
发表时间：
2009-05-01
期刊：
影响因子：
12.8
通讯作者：
Ismadji, Suryadi
中科院分区：
文献类型：
--
作者：
Putra, Eric Kristia;Pranowo, Ramon;Ismadji, Suryadi
制药废水中的痕量阿莫西林对藻类和食物网中的其他低等生物有毒性影响。选择吸附作为从水中去除污染物的有效方法;特别是用膨润土和活性炭作为吸附剂。该研究在几个pH值下进行。然后采用Langmuir和Freundlich模型来关联平衡数据，这两种模型同样很好地拟合数据。对于动力学数据，选择伪一阶和二阶模型。虽然化学吸附是膨润土的主要吸附机制，但物理吸附和化学吸附对活性炭的吸附起着重要作用。此外，这些吸附系统的几种可能的机制进行了进一步阐述。(C)2009爱思唯尔有限公司保留所有权利。
Amoxicillin's traces within pharmaceutical effluents have toxic impact toward the algae and other lower organisms within food web. Adsorption, as an efficient process to remove contaminants from water was chosen; in particular with bentonite and activated carbon as adsorbents. The study was carried out at several pH values. Langmuir and Freundlich models were then employed to correlate the equilibria data on which both models equally well-fit the data. For kinetic data, pseudo-first and second order models are selected. While chemisorption is the dominant adsorption mechanism on the bentonite case, both physisorption and chemisorption play important roles for adsorption onto activated carbon. Also, several possible mechanisms for these adsorption systems were elaborated further. (C) 2009 Elsevier Ltd. All rights reserved.