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题名: Photocatalytic regeneration of coal-based activated carbon
作者: Liu, SX;  Sun, CL;  Zhang, SR
关键词: coal-based activated carbon ;  titania ;  silver ;  phenol ;  photocatalytic regeneration ;  regeneration mechanism
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2003-05-01
卷: 24, 期:5, 页:355-358
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The technical feasibility of photocatalytic regeneration for coal-based activated carbon saturated with phenol was investigated in immobilized system by using TiO2 and Ag-TiO2 as photocatalysts, and using UV lamp (lambda = 253.7 nm) as irradiation source. The factors affecting the regeneration efficiency of the activated carbon were investigated, including photocatalyst modification, regeneration temperature, oxidant additive, adsorption regeneration cycles, and pH values. Based on the regeneration rate of activated carbon under different conditions, the regeneration mechanism was discussed. The effect of regeneration treatment on the pore structure of activated carbon was investigated by using N-2-adsorption isotherms. It is possible to regenerate the coal-based activated carbon through photocatalytic oxidation. The phenol adsorption capacity of activated carbon with 1.9% (Ag-TiO2) loading can be recovered by 78.4%, when regenerated under the conditions of pH = 13, theta = 70 degreesC and t = 72 h. The difference of phenol concentration between interior and exterior of activated carbon is the main driving force for photocatalytic regeneration.
关键词[WOS]: OXIDATION ;  DYE
语种: 英语
WOS记录号: WOS:000183665900010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139248
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.NE Forestry Univ, Harbin 150040, Heilongjiang, Peoples R China

Recommended Citation:
Liu, SX,Sun, CL,Zhang, SR. Photocatalytic regeneration of coal-based activated carbon[J]. CHINESE JOURNAL OF CATALYSIS,2003,24(5):355-358.
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