| 低频超声协同Fe-Ni-Mn/Al_2O_3催化降解酸性绿B的研究 |
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| 引用本文： | 郑怀礼,张占梅.低频超声协同Fe-Ni-Mn/Al_2O_3催化降解酸性绿B的研究[J].环境工程学报,2009,3(2). |
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| 作者姓名： | 郑怀礼 张占梅 |
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| 作者单位： | 重庆大学三峡库区生态环境教育部重点实验室,重庆,400045;重庆大学城市建设与环境工程学院,重庆,400045 |
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| 基金项目： | 国家自然科学基金，教育部科技创新工程重大项目培育基金，重庆大学研究生科技创新项目 |
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| 摘 要： | 采用低频超声与Fe-Ni-Mn/Al2O3催化剂协同降解偶氮染料酸性绿B模拟废水,考察染料初始浓度和pH值、催化剂、饱和气体及H2O2等因素对酸性绿B降解效果的影响,结果表明:催化剂Fe-Ni-Mn/Al2O3与低频超声存在协同效应,催化剂的最佳投加量为6 g/L;酸性条件有利于染料的超声降解,当pH=3.8时,可取得最佳的降解效果;酸性绿B降解率随初始浓度的增大而降低,其优化初始浓度为100 mg/L,此外,在反应体系中鼓入饱和气体也可促进酸性B的降解,且影响顺序为混合气体(air+Ar)>氧气>氩气;在反应过程中投加H2O2有利于染料降解率的提高.在优化实验条件下降解150 min,酸性绿B色度去除率达到91.4%.
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| 关 键 词： | 低频超声 降解 酸性绿B 催化剂 |
Degradation of acid green B by low-frequency ultrasound synergized with Fe-Ni-Mn/Al_2O_3 |
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| Zheng Huaili,Zhang Zhanmei.Degradation of acid green B by low-frequency ultrasound synergized with Fe-Ni-Mn/Al_2O_3[J].Techniques and Equipment for Environmental Pollution Control,2009,3(2). |
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| Authors: | Zheng Huaili Zhang Zhanmei |
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| Institution: | 1.Key laboratory of the Three Gorges Reservoir Region's Eco-Environment;Ministry of Education;Chongqing University;Chongqing 400045;2.Faculty of Urban Construction & Environmental Engineering;Chongqing 400045 |
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| Abstract: | The degradation of azo dye acid green B in aqueous solution was studied by low-frequency ultrasound in the presence of catalyst Fe-Ni-Mn/Al2O3.The effects of initial concentration and pH value of dyestuff solution,catalyst,saturated gas and H2O2 on degradation of acid green B were investigated.The results show that catalyst Fe-Ni-Mn/Al2O3 is favorable for degradation of acid green B and there exist synergetic effects in Fe-Ni-Mn/Al2O3 catalyst combined with lowfrequency ultrasonic irradiation.The optimal do... |
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| Keywords: | low-frequency ultrasound degradation acid green B catalyst |
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