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当前位置: 首页 > 文章 > 水中本底成分对催化臭氧氧化降解富里酸的影响 农业环境科学学报 2013,32 (01) 191-196
Position: Home > Articles > Effect of Background Constituents on the Degradation of Fulvic Acid in Aqueous Solution by Catalytic Ozonation Journal of Agro-Environment Science 2013,32 (01) 191-196

水中本底成分对催化臭氧氧化降解富里酸的影响

作  者：
周文敏;符建荣;肖华;喻曼;许育新
单  位：
浙江省农业科学院环境资源与土壤肥料研究所;湖南大学环境科学与工程学院;浙江师范大学化学与生命科学学院
关键词：
催化臭氧化;钴锰复合氧化物;富里酸;羟基自由基
摘  要：
为考察水中本底成分对催化臭氧氧化降解富里酸(FA)的影响规律,以FA为降解对象,Co-Mn-O为催化剂,研究了催化剂投量、pH、无机阴离子、氨氮及金属离子等因素对催化臭氧氧化的影响,降解效果以CODCr去除效率表示。结果表明:催化剂投量为0.1g·L-1最适宜;缓冲及非缓冲体系下均表现为pH越大,FA降解效果越好;无机阴离子中Cl-对反应有明显的抑制作用,且随浓度的增加而增强;自由基抑制剂HCO-3和CO2-3对反应的抑制效果显著;NH+4对FA的降解有一定的促进作用,反之,NH3对FA的降解有显著的抑制作用;低浓度金属离子对反应的影响各不相同,其中Mn2+、Cu2+抑制了富里酸的降解,而Ca2+、Fe2+对富里酸的降解存在促进作用。
译  名：
Effect of Background Constituents on the Degradation of Fulvic Acid in Aqueous Solution by Catalytic Ozonation
作  者：
ZHOU Wen-min1,2,FU Jian-rong2,XIAO Hua2*,YU Man2,XU Yu-xin2(1.College of Chemistry and Life Sciences,Zhejiang Normal University,Jinhua 321004,China;2.Environmental Resources and Soil Fertilizer Institute,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China)
关键词：
catalytic ozonation;Co-Mn-O;fulvic acid;hydroxyl radical
摘  要：
The effect of background constituents on catalytic ozonation of fulvic acid(FA) was investigated.The main impact factors included pH,different anions,ammonium,and different metal cations.The catalyst was Co-Mn-O mixed metal oxides which were prepared by oxidation-reduction method.The results showed that the optimum amount of catalyst was 0.1 g·L-1.Both in non-buffer and buffer solution,degradation efficiency of FA were better in alkaline condition than in acid condition.Inorganic anion Cl-had a significant negative impact on the oxidation of FA,and the negative effect increased with increasing the concentration of Cl-.The removal of FA was seriously inhibited by the addition of radical inhibitor HCO-3 or CO2-3.The presence of large amount of ammonium greatly promoted the degradation of FA;on the contrary,ammonia had a significant negative impact on the oxidation of FA.At last,low concentration of manganese ion or copper ion inhibited the degradation of FA,but calcium ion or ferrous ion promoted its degradation.

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