三价铁离子对厌氧颗粒污泥降解溶液中洛克沙胂的影响分析
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摘要
针对洛克沙胂(3-硝基-4-羟基苯砷酸)跟随畜禽的粪便进入环境中降解产生危害的问题,采用添加三价铁离子来影响洛克沙胂的降解.结果表明:洛克沙胂在厌氧颗粒污泥的作用下,迅速被转化为4-羟基-3-氨基苯砷酸(HAPA),HAPA也很快产生降解;3 h内,三价铁离子迅速吸附溶液洛克沙胂并吸附完全;被吸附的洛克沙胂,又再次被释放出来,随即被完全降解;三价铁浓度提高在一定程度上加快了洛克沙胂的分解,同时也加速了降解产物HAPA的降解.
In order to solve the problem that Roxarsone(3-nitro-4-hydroxyphenyl arsenic acid) is harmful to the degradation of livestock and poultry feces into the environment, the addition of trivalent iron ions is used to influence the degradation of Roxarsone. The results show that roxarsone was quickly transformed into 4-hydroxy-3-aminobenzene arsonic acid(HAPA) in the role of microorganism, and HAPA was quickly degraded. Within 3 hours, roxarsone was rapidly adsorbed by ferric iron, however roxarsone adsorbed was released into the liquid, and finally degraded. To a certain extent, high ferric concentration could accelerate the degradation of roxarsone, as so as the degradation product HAPA.
In order to solve the problem that Roxarsone(3-nitro-4-hydroxyphenyl arsenic acid) is harmful to the degradation of livestock and poultry feces into the environment, the addition of trivalent iron ions is used to influence the degradation of Roxarsone. The results show that roxarsone was quickly transformed into 4-hydroxy-3-aminobenzene arsonic acid(HAPA) in the role of microorganism, and HAPA was quickly degraded. Within 3 hours, roxarsone was rapidly adsorbed by ferric iron, however roxarsone adsorbed was released into the liquid, and finally degraded. To a certain extent, high ferric concentration could accelerate the degradation of roxarsone, as so as the degradation product HAPA.
引文
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[2] 廖巧霞.洛克沙胂在养殖业中的应用[J].广东畜牧兽医科技,2005,30(4):12-13.
[3] 梁腾方.土壤微生物对洛克沙胂生物化学转化的影响研究[D].合肥:合肥工业大学,2015.
[4] 廖晓勇,陈同斌,肖细元,等.污染水稻田中土壤含砷量的空间变异特征[J].地理研究,2003,22(5):635-643.
[5] 段建平,周训胜.兽药洛克沙胂产品质量的规范分析[J].福州大学学报:自然科学版,1998,26(6):106-109
[6] 傅山岗,李宗义.厌氧颗粒污泥的超微结构分析[J].生物技术,2004,14(4):69-71.
[7] 杨洋,左剑恶,沈平,等.温度、pH值和有机物对厌氧氨氧化污泥活性的影响[J].环境科学,2006,27(4):691-695.
[8] 许润东.养殖废水中洛克沙胂的生物电化学转化研究[D].合肥:合肥工业大学,2017.
[9] 章菲菲.洛克沙胂在厌氧污泥体系中的降解转化研究[D].合肥:合肥工业大学,2015.
[10] Zhang F F,Wang W,Yuan S J,et al.Biodegradation and speciation of roxarsone in an anaerobic granular sludge system and its impacts.[J].Journal of Hazardous Materials,2014,279(5):562-568.
[11] 李祥,黄勇,巫川,等.Fe2+和Fe3+对厌氧氨氧化污泥活性的影响[J].环境科学,2014(11):4224-4229.
[12] 郑元武,彭书传,胡真虎,等.有机砷对固态厌氧消化产甲烷的影响和动力学研究[J].环境污染与防治,2015,37(1):7-11.
[13] 石林.废水中有机砷的生物电化学降解及无机砷原位回收研究[D].合肥:合肥工业大学,2015.