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【分享】2010年EST发表与短程反硝化相关的牛文 已有4人参与
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牛文！以飨读者。 不好意思，上传到这里了，应该不需要注册了。 http://good.gd/521613.htm paper name:Operational Boundaries for Nitrite Accumulation in Nitrification Based on Minimum/Maximum Substrate Concentrations That Include Effects of Oxygen Limitation, pH, and Free Ammonia and Free Nitrous Acid Inhibition author：S E O N G J U N P A R K , WOOKEUN B A E , A N D B R U C E E . R I T T M A N N [ Last edited by guanyue928 on 2010-5-21 at 11:33 ] |
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OK,响应大家建议； 详情如下： Paper name：《Nitration Processes of Acetaminophen in Nitrifying Activated Sludge》 author：S E R G E C H I R O N , E L E N A G O M E Z , A N D H ´E L E` NE F E N E T abstract：This work is an attempt to elucidate the quantitative significance of cetaminophen (APAP) nitration in nitrifying activated sludge and to propose a reaction mechanism for this process. The link between nitrification and nitration of APAP was investigated at different scales. Results from field studies showed the occurrence of 3-nitro-APAP and to a lesser extent 3-chloro-5-nitro-APAP at concentration levels in the 50-300 ng/Lrangein effluents ofafull scale wastewater treatment plant (WWTP) operated with nitrogen removal, whereas 3-hydroxy-APAP was eliminated after the nitrification step.Batch experiments with nitrifying activated sludge confirmed APAP transformation by nitration and suggested that nitrifying bacteria may play a role in this transformation process through the release of reactive nitrogen species. In vitro assays provided evidence that nitration through the production of nitrous acid is a very unlikely pathway. In contrast, nitric oxide (•NO) produced by nitrifying bacteria is probably involved in APAP nitration through the formation of peroxynitrite in presence of superoxide anion. The production of 3-nitro-APAP wouldonly account forafewpercents of the total transformation rate of APAP in WWTPs. The production of nitrated derivatives is highly relevant because of the potential ecotoxicological risks of these compounds. |
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简单回复
zhangbl8楼
2010-05-21 12:17
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[ Last edited by zhangbl on 2010-5-21 at 12:26 ]