收稿日期: 2013-08-14
修回日期: 2013-09-29
网络出版日期: 2014-07-15
基金资助
国家科技重大专项（2011ZX05060-005，2008ZX05039-003）资助
Thermodynamics effect of high-concentration Cl- and HCO3- ions in coalbed methane co-produced water on the adsorption of F- by activated alumina
Received date: 2013-08-14
Revised date: 2013-09-29
Online published: 2014-07-15
朱晓琦 , 黄丽娟 , 胡正义 , 刘小宁 , 王惠惠 . 煤层气产出水中高浓度Cl-和HCO3-对活性氧化铝吸附F-的热力学影响[J]. 中国科学院大学学报, 2014 , 31(4) : 466 -470 . DOI: 10.7523/j.issn.2095-6134.2014.04.004
We investigated thermodynamics effect of Cl- (1000 mg·L-1) and HCO3- (2000 mg·L-1) in coalbed methane co-produced water on adsorption of fluoride (F-) by activated alumina, and discussed the change in adsorption capacity by analyzing the surface solid characterizations of activated alumina. The results show that adsorption process is an endothermic reaction (ΔH>0) and entropy (ΔS>0) is the main driving force. The co-existence of high-concentration Cl- and HCO3- will decrease the equilibrium F- adsorption by activated alumina.
Key words： CBM co-produced water; Cl- and HCO3-ion; F-; activated alumina; thermodynamics
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