Preliminary trial on degradation of waste activated sludge and simultaneous hydrogen production in a newly-developed solar photocatalytic reactor with AgX/TiO₂-coated glass tubes

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• 作者：Chunguang Liu ; Zhongfang Lei ; Yingnan Yang ; Zhenya Zhang
• 关键词：Solar fluidized tubular photocatalytic reactor (SFTPR) ; Waste activated sludge ; Hydrogen production ; TiO2 photocatalysis ; Ag doping
• 刊名：Water Research
• 出版年：2013
• 出版时间：15 September, 2013
• 年：2013
• 卷：47
• 期：14
• 页码：4986-4992
• 全文大小：1411 K

文摘

A solar fluidized tubular photocatalytic reactor (SFTPR) with simple and efficient light collector was developed to degrade waste activated sludge (WAS) and simultaneously produce hydrogen. The photocatalyst was a TiO₂ film doped by silver and silver compounds (AgX). The synthesized photocatalyst, AgX/TiO₂, exhibited higher photocatalytic activity than TiO₂ (99.5 % and 30.6 % of methyl orange removal, respectively). The installation of light collector could increase light intensity by 26 % . For WAS treatment using the SFTPR, 69.1 % of chemical oxygen demand (COD) removal and 7866.7?¦Ìmol H₂/l-sludge of hydrogen production were achieved after solar photocatalysis for 72?h. The SFTPR could be a promising photocatalysis reactor to effectively degrade WAS with simultaneous hydrogen production. The results can also provide a useful base and reference for the application of photocatalysis on WAS degradation in practice.