Simultaneous oxidation of ammonium, p-cresol and sulfide using a nitrifying sludge in a multipurpose bioreactor: a novel alternative.
Simultaneous oxidation of ammonium, p-cresol and sulfide using a nitrifying sludge in a multipurpose bioreactor: a novel alternative.
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在多功能生物反应器中使用硝化污泥同时氧化铵、对甲酚和硫化物：一种新颖的替代方案。
DOI：
10.1016/j.biortech.2010.10.127
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发表时间：
2011
影响因子：
11.4
通讯作者：
Jorge Gómez
中科院分区：
文献类型：
--
作者：
R. Beristain;D. Pérez;G. González;Jorge Gómez
采用硝化连续搅拌槽式反应器作为多功能生物反应器，在220 mg NH_4 ~+-N/L、89 mg对甲酚-C /L和36- 76 mg S_2 ~-/L的条件下运行325天。生物反应器以顺序方式进料，首先用铵，实现89%的消耗效率，硝酸盐产率为0.99。之后，进料对甲酚，分别实现95%和100%的铵和对甲酚消耗效率。硝酸盐产率较高，未检测到来自对甲酚的芳香族中间体。最后加入硫化物，所有底物的消耗效率均为100%，最终产物为硝酸盐、HCO 3-和硫酸盐。动力学结果表明，生物硫化物消耗速度比化学氧化快13倍。这是第一次硝化反应器可以用于多种目的，也可以在一个步骤中同时去除铵，硫化物和对甲酚。
A nitrifying continuous stirred tank reactor was used as multipurpose bioreactor and it was operated for 325days at 220mg NH4+–N/Ld, 89mg p-cresol-C /Ld and 36–76mg S2–/Ld. The bioreactor was fed in sequential way, firstly with ammonium, achieving a consumption efficiency of 89%, with a nitrate yield of 0.99. Afterward, p-cresol was fed, achieving ammonium and p-cresol consumption efficiencies of 95% and 100%, respectively. The nitrate yield was higher and no aromatic intermediaries from p-cresol were detected. Finally sulfide was fed and the consumption efficiencies for all substrates were of 100%, being nitrate, HCO3-and sulfate the end products. The kinetic results showed that biological sulfide consumption was 13-fold faster than the chemical oxidation. This is the first time that a nitrifying reactor can be used for multiple purposes and also for the simultaneous removal of ammonium, sulfide and p-cresol in one step.