厌氧氨氧化富集物的含氮基质转化特性。
Characteristics of nitrogenous substrate conversion by anammox enrichment.
机构信息
Department of Environmental Engineering, Zhejiang University, Hangzhou, China.
出版信息
Bioresour Technol. 2011 Jan;102(2):536-42. doi: 10.1016/j.biortech.2010.07.015. Epub 2010 Aug 21.
The characteristics of nitrogenous substrates conversion by anammox enrichment were investigated using batch experiments. The anammox enrichment was proved able to convert hydroxylamine to hydrazine, as well as convert hydrazine to ammonia anaerobically, with the average conversion rates of 0.207 and 0.031 mmol gVSS(-1) h(-1). It could convert hydroxylamine and nitrite simultaneously, with ammonia as an intermediate product. The maximum conversion rates of hydroxylamine and nitrite were 0.535 and 0.145 mmol gVSS(-1) h(-1), respectively. Their conversion rates were enhanced by 26.7% and 120.7%, respectively, by raising the ratio of hydroxylamine to nitrite from 1:1 to 2:1. The characteristics of nitrogenous substrate conversion by anammox enrichment could be explained using the speculative anammox pathway based on van de Graaf model.
采用批式实验研究了厌氧氨氧化富集物对含氮基质转化的特性。结果表明，厌氧氨氧化富集物能够将羟胺转化为联氨，并在厌氧条件下将联氨进一步转化为氨，其平均转化速率分别为 0.207 和 0.031mmol gVSS(-1) h(-1)。同时，该富集物能够以氨作为中间产物，将羟胺和亚硝酸盐同时转化。当羟胺与亚硝酸盐的比值从 1:1 提高到 2:1 时，羟胺和亚硝酸盐的最大转化速率分别提高了 26.7%和 120.7%，分别达到了 0.535mmol gVSS(-1) h(-1)和 0.145mmol gVSS(-1) h(-1)。根据 van de Graaf 模型推测的厌氧氨氧化途径，可以解释厌氧氨氧化富集物对含氮基质转化的特性。
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