期刊
JOURNAL OF ENVIRONMENTAL SCIENCES
卷 22, 期 1, 页码 7-14出版社
SCIENCE PRESS
DOI: 10.1016/S1001-0742(09)60068-1
关键词
composite; Methyl Violet; adsorption kinetics; isotherm
资金
- Chinese Academy of Science [KGCX2-YW-501]
- Jiangsu Provincial Science and Technology Office [BS2007118, BE2008087]
- Key Laboratory of Resources and Environment Chemistry of West China, Hexi University [XZ0606]
The adsorption of Methyl Violet (MV) cationic dye from aqueous solution was carried out by using crosslinked poly (acrylic acid-co-acrylamide)/attapulgite (Poly(AA-co-AM)/ATP) composite as adsorbent. The factors influencing adsorption capacity of the composite such as pH, concentration of the dye, temperature, contact time, adsorbent dosage, ionic strength and surfactant were systematically investigated. The equilibrium data fitted very well to the Langmuir isotherm and the maximum adsorption capacity reached 1194 mg/g at 30 degrees C. The thermodynamic parameters including Delta G(0), Delta H-0 and Delta S-0 for the adsorption processes of MV on the composite were also calculated, and the negative Delta H-0 and Delta G(0) confirmed that the adsorption process was exothermic and spontaneous. The kinetic studies showed that the adsorption process was consistent with the pseudo second-order kinetic model and the desorption studies revealed that the regeneration of the composite adsorbent can be easily achieved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据