| Decolorization Kinetics of Sludge Protein Solution by ~（60）Coγ-Ray Irradiation/H_2O_2 Oxidation |
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| 引用本文： | 相玉琳,张卫江,郑浩.Decolorization Kinetics of Sludge Protein Solution by ~（60）Coγ-Ray Irradiation/H_2O_2 Oxidation[J].天津大学学报(英文版),2011,17(1):45-50. |
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| 作者姓名： | 相玉琳 张卫江 郑浩 |
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| 作者单位： | School;Chemical;Engineering;Technology;Tianjin;University; |
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| 基金项目： | Supported by Foundation of Universities Double-Five Science and Technology Program of Tianjin(No.W20080003) |
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| 摘 要： | In order to carry out decolorization, sludge protein solution, a dark brown close to black solution from activated sludge, was subjected to 60Co γ-ray irradiation in the presence of hydrogen peroxide. UV/Vis spectrophotometric method was used to investigate the effect of H2O2 on the coloration apparent kinetics and rate constants of sludge protein solution under γ-ray irradiation. In addition, the effects of irradiation dose, initial sludge protein solution concentration, and pH value on the decolorization efficiency of sludge protein solution were studied. Results showed that the decolorization apparent kinetics of sludge protein solution was a first-order reaction. The solution decolorization percentage increased with the increase of irradiation dose or the decrease of initial sludge protein solution concentration. The examination results of pH value showed that the sludge protein solution could be more efficiently decolorized in alkaline media than in acid media. Moreover, sensory evaluation and foamability analysis indicated that irradiated samples under H2O2 oxidation showed better sensory score and foamability.
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| 关 键 词： | sludge protein solution decolorization kinetics irradiation hydrogen peroxide sensory evaluation foamability |
| 收稿时间： | 31 December 2010 |
Decolorization Kinetics of Sludge Protein Solution by 60Co γ-Ray Irradiation/H2O2 Oxidation |
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| XIANG Yulin,ZHANG Weijiang,ZHENG Hao.Decolorization Kinetics of Sludge Protein Solution by 60Co γ-Ray Irradiation/H2O2 Oxidation[J].Transactions of Tianjin University,2011,17(1):45-50. |
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| Authors: | XIANG Yulin ZHANG Weijiang ZHENG Hao |
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| Institution: | School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | In order to carry out decolorization, sludge protein solution, a dark brown close to black solution from activated sludge,
was subjected to 60Co γ-ray irradiation in the presence of hydrogen peroxide. UV/Vis spectrophotometric method was used to investigate the effect
of H2O2 on the coloration apparent kinetics and rate constants of sludge protein solution under γ-ray irradiation. In addition, the
effects of irradiation dose, initial sludge protein solution concentration, and pH value on the decolorization efficiency
of sludge protein solution were studied. Results showed that the decolorization apparent kinetics of sludge protein solution
was a first-order reaction. The solution decolorization percentage increased with the increase of irradiation dose or the
decrease of initial sludge protein solution concentration. The examination results of pH value showed that the sludge protein
solution could be more efficiently decolorized in alkaline media than in acid media. Moreover, sensory evaluation and foamability
analysis indicated that irradiated samples under H2O2 oxidation showed better sensory score and foamability. |
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| Keywords: | sludge protein solution decolorization kinetics irradiation hydrogen peroxide sensory evaluation foamability |
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