| 以葡萄糖为共基质硝基酚厌氧生物降解性试验研究 |
| 摘要点击 2387 全文点击 2424 投稿时间：2003-07-23 修订日期：2003-09-15 |
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| 中文关键词 葡萄糖 共基质 硝基酚 厌氧生物降解性 |
| 英文关键词 glucose co-substrate nitrophenols anaerobic biodegradation |
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| 中文摘要 |
| 在35℃中温厌氧条件下,以葡萄糖为共基质,采用间歇试验法,通过测定甲烷累积产量,研究了2-硝基酚、4-硝基酚、2,4-二硝基酚和2,6-二硝基酚的厌氧生物降解性,利用相对活性值来判断硝基酚对产甲烷菌的抑制程度.研究结果表明:2-硝基酚浓度小于24mg/L时,对产甲烷菌没有产生抑制作用;4-硝基酚浓度小于20mg/L时,对产甲烷菌没有产生抑制作用,浓度为24mg/L时产生轻度抑制;2,6-二硝基酚浓度小于12mg/L时未产生抑制作用,浓度为16mg/L～24mg/L时产生轻度抑制;2,4-二硝基酚浓度小于4mg/L时没有产生抑制作用,浓度为8mg/L～24mg/L时产生中度抑制.4种物质对产甲烷菌活性的抑制由小到大的排列顺序为:2-硝基酚＜4-硝基酚＜2,6-二硝基酚＜2,4-二硝基酚. |
| 英文摘要 |
| A batch anaerobic test was conducted to examine the biodegradation of 2-nitrophenol,4-nitrophenol,2, 4-dinitrophenol and 2, 6-dinitrophenol through measuring accumulative methane production. The Relative activity values were used to judge the inhibition level of nitrophenols on methanogenic bacteria.The test conditions was as follow: glucose was used as co-substrate and the temperature is 35℃. It didn't cause inhibition when concentrations of 2-nitrophenol, 4-nitrophenol, 2,6-dinitrophenol and 2,4-dinitrophenol were below 24mg/L, 20mg/L, 12mg/L and 4mg/L respectively. Slight inhibition was caused when concentrations of 4-nitrophenol and 2,6-dinitrophenol were 24mg/L and 16mg/L～24mg/L respectively. Middle inhibition when concentrations of 2,4-dinitrophenol were 8mg/L～24mg/L was observed. The inhibition level was 2,4-dinitrophenol >2,6-dinitrophenol >4-nitrophenol >2-nitrophenol. |
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