| UV/Fenton反应对直接黑38的脱色与矿化 |
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| 引用本文： | 陈在旭,熊振湖.UV/Fenton反应对直接黑38的脱色与矿化[J].环境科学与技术,2009,32(8). |
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| 作者姓名： | 陈在旭 熊振湖 |
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| 作者单位： | 天津城市建设学院环境与市政工程系,天津,300384 |
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| 摘 要： | 为了研究过程参数对photo-Fenton法降解偶氮染料直接黑38人工废水的影响,进行了实验室规模的UV/Fenton反应光催化降解染料直接黑38的研究。在一定的时间段内检测水溶液直接黑38的UV吸光度、总有机碳(TOC)浓度的变化,确定了直接黑38废水的降解速度。以单因素实验方法确定了pH值、Fe2+]、H2O2]比例及其初始浓度对降解速度的影响。实验结果表明,在pH为3,染料浓度为30mg/L,Fe2+]/H2O2]比例1:100,Fe2+]=0.12mmol/L,H2O2]=12mmol/L条件下,UV/Fenton方法能在50min内使染料脱色率达90%,使TOC的去除率达到57%。实验证明了photo-Fenton法对于含有偶氮染料废水的脱色与矿化具有很好的应用前景。
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| 关 键 词： | 光-芬顿反应 直接黑38 降解 矿化 |
Photocatalytic Oxidation of Direct Black 38 in Water by UV/Fenton Reaction |
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| CHEN Zai-xu,XIONG Zhen-hu.Photocatalytic Oxidation of Direct Black 38 in Water by UV/Fenton Reaction[J].Environmental Science and Technology,2009,32(8). |
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| Authors: | CHEN Zai-xu XIONG Zhen-hu |
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| Institution: | Department of Environmental and Municipal Engineering;Tianjin Institute of Urban Construction;Tianjin 300384;China |
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| Abstract: | Photocatalytic degradation of Direct Black 38(DB38)solutions under Fenton reagent assisted by UV light irradiation was studied.Single factorial experimental design was applied to study the influence of pH and initial concentration of FeSO4 and H2O2 on the degradation effect.The efficiency of photocatalytic degradation was determined from the analysis of color and destruction of direct DB38 was determined from analysis of TOC.Results showed that acidic pHs were preferred for 90% dye decoloration and 57% TOC ... |
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| Keywords: | photo-Fenton process Direct Black 38(DB38) Degradation mineralization |
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