改性活性炭对2,4,6-三氯酚的吸附

doi:10.11835/j.issn.1674-4764.2009.06.022

首页 > 过刊浏览>2009年第31卷第6期 >122-127. DOI:10.11835/j.issn.1674-4764.2009.06.022

改性活性炭对2,4,6-三氯酚的吸附
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                        10.11835/j.issn.1674-4764.2009.06.022
                    
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基金项目:建设部水体污染控制与治理科技重大专项(2008ZX07425007)资助

Performance analysis of 2,4,6Trichlorophenol Adsorption by Modified GAC

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比较研究了5种活性炭(GAC0、GACH、GACF、GACF1M1、GACF1M3)对2,4,6-三氯酚(2,4,6-TCP)的去除效果，发现GACF1M3有最佳的TCP吸附能力；5种活性炭对TCP的吸附容量分别为160、178、207、194和238 mg/g。着重研究了GACF1M3对TCP的吸附过程。随着TCP初始浓度的增加，TCP的吸附量也相应增加；温度的改变，会影响TCP的去除率，温度从30 ℃增加到45 ℃时，相同条件下的TCP的去除率稍有下降；活性炭的投加量对TCP的去除也有较明显的影响，投加量从10 mg到500 mg，TCP的去除效果明显增强。微酸性的pH值，有利于GACF1M3吸附TCP。在反应动力学的研究中，拟二级反应动力学能较好的模拟反应过程。通过扫描电镜及X射线衍射实验，观察GACF1M3的表面形貌并确定表面负载金属化合物的主要成分为Fe3O4、Mn3O4、FeOxMnO(1-x)。

Abstract:

The removal effect of 2,4,6trichlorophenol (TCP) by five kinds of activated carbon (GAC0、GACH、GACF、GACF1M1、GACF1M3)were investigated. And it was found that the adsorption capacity was 160,178,207,194 and 238 mg/g, respectively. With the further study of GACF1M3’s performance, it was shown that adsorption capacity increased with initial concentration increasing, and decreased with temperature increasing. When the temperature was changed from 30℃ to 45℃, the removal rate would reduce slightly. The dosage increased from 10 mg to 500 mg, the removal effect improved significantly. Acidic condition was more favorable for the adsorption of TCP. Upon the analysis of the reaction kinetics, it was found that the reaction could be simulated with pseudosecondorder kinetic model. With XRD and SEM, the main metal oxide composites of GACF1M3 were Fe3O4、Mn3O4、FeOx(MnO)1-x.

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刘振中,邓慧萍,詹健.改性活性炭对2,4,6-三氯酚的吸附[J].土木与环境工程学报（中英文）,2009,31(6):122-127. LIU Zhenzhong, DENG Huiping, ZHAN Jian. Performance analysis of 2,4,6Trichlorophenol Adsorption by Modified GAC[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2009,31(6):122-127.10.11835/j. issn.1674-4764.2009.06.022

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收稿日期:2009-07-14
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