Fenton氧化降解水中几种氨基甲酸酯类农药的试验研究  

Study on degradation of several carbamate pesticides by Fenton oxidation

作　　者：郝凤霞[1] 何金兰 李鹏[1] 夏维涛 杨金会[1] HAO Feng-xia;HE Jin-lan;LI Peng;XIA Wei-tao;YANG Jin-hui(State Key Laboratory of High-Efficiency Utilization of Coal & Green Chemical Engineering,Ningxia University,Yinchuan 750021,China)

机构地区：[1]省部共建煤炭高效利用与绿色化工国家重点实验室宁夏大学,宁夏银川750021

出　　处：《应用化工》2020年第7期1623-1625,1629,共4页Applied Chemical Industry

基　　金：国家自然科学基金资助项目(21567022)。

摘　　要：采用Fenton法对水中几种氨基甲酸酯类农药(速灭威、克百威和抗蚜威)进行降解,考察了时间、FeSO4·7H2O用量、H2O2体积等因素对农药降解率的影响。结果表明,时间、FeSO4·7H2O用量、H2O2用量对三种农药的降解具有重要影响,随着时间的增加,三种农药的降解率逐渐增加,在2 h内降解速度最快,之后逐渐趋于平缓;当FeSO4·7H2O用量<1 g时,三种农药的降解率随着FeSO4·7H2O用量的增加而增加;三种农药的降解率随着H2O2体积的增加而逐渐增加,当H2O2体积为6 mL时,三种农药的降解率都达到90%以上。在优化的实验条件下,三种农药的降解率分别为速灭威95.5%,克百威98.9%,抗蚜威93.5%。The degradation of several carbamate pesticides such as metolcarb,carbofuran and pirimicarb in water solution have been studied by Fenton oxidation.Effects of oxidation time,the usage of FeSO4·7H2O and H2O2 volumn on the oxidation of several carbamate pesticides have been tested.The result is implicated as follows:Some factors including influence oxidation time,the usage of FeSO4·7H2O and H2O2 volumn have the important impact on the oxidation of several carbamate pesticides.With the extension of time,the degradation rates of several carbamate pesticides increased gradually,in which,the degradation rates were rapid within 2 h,after that,it approached to a flat;With the increase of the usage of FeSO4·7H2O within 1 g,the degradation rates increased gradually;With the increase of H2O2 volumn,the degradation rates increased gradually.When the H2O2 volumn was 6 mL,the degradation rates of several carbamate pesticides were more than 90 percent.On the basis of that,the degradation rates of the three pesticides such as metolcarb,carbofuran and pirimicarb were 95.5%,98.9%and 93.5%,respectively.

关 键 词：FENTON 速灭威 克百威 抗蚜威 降解 

分 类 号：TQ031.3[化学工程]