Photocatalytic regeneration of coal-based activated carbon
Liu, SX; Sun, CL; Zhang, SR
KeywordCoal-based Activated Carbon Titania Silver Phenol Photocatalytic Regeneration Regeneration Mechanism
Indexed BySCI
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
AbstractThe 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.
WOS IDWOS:000183665900010
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.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
GB/T 7714
Liu, SX,Sun, CL,Zhang, SR. Photocatalytic regeneration of coal-based activated carbon[J]. CHINESE JOURNAL OF CATALYSIS,2003,24(5):355-358.
APA Liu, SX,Sun, CL,&Zhang, SR.(2003).Photocatalytic regeneration of coal-based activated carbon.CHINESE JOURNAL OF CATALYSIS,24(5),355-358.
MLA Liu, SX,et al."Photocatalytic regeneration of coal-based activated carbon".CHINESE JOURNAL OF CATALYSIS 24.5(2003):355-358.
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