苯胺黑药的厌氧生物降解与机理

以苯胺黑药为研究对象,利用UV、IC和GC-MS分析苯胺黑药的生物降解途径.结果表明:经24h厌氧降解,苯胺黑药降解率达到44.18%.苯胺黑药厌氧降解不同时段的产物经IC及GC-MS分析,48h后产生了NO₃^-、PO₄^3-、SO₄^2-,苯胺黑药中P和S部分转化为PO₄^3-、SO₄^2-.降解过程中检测出苯胺、2,5-二叔丁基苯酚、C₁₃H₂₃C_l3O₂、1-二十醇、十二烷和二十烷.推测其途径为苯胺黑药降解成苯胺及磷酸盐,硫酸盐,苯胺再脱除氨基降解生成2,5-二叔丁基苯酚,最终降解为链烃类有机物1-二十醇、二十二烷、二十烷.

Anaerobic biodegradation and mechanism of aniline aerofloat

The degradation pathways and mechanisms of aniline aerofloat in an anaerobic reactor were investigated by UV, IC and GC-MS analysis. The results showed that total aniline aerofloat content of up to 44.18% were degraded within 48hours. N, P and S elements in aniline aerofloat were partially converted into NO₃^-, PO₄^3- and SO₄^2-, respectively, according to IC analysis. The main degradation intermediates were monitored by GC-MS and determined as aniline, 2, 5-bis(1, 1-dimethylethyl)-, C₁₃H₂₃C_l3O₂, 1-nonadecene, docosane and eicosane. It is proposed that the aniline aerofloat was firstly degraded into aniline, phosphate and sulfate, and was then deaminizated to form phenol, 2, 5-bis(1, 1-dimethylethyl) and NO₃^-, which are further degraded to chain hydrocarbons including 1-nonadecene, docosane and eicosane.