Mono-fermentation of chicken manure: Ammonia inhibition and recirculation of the digestate
Mono-fermentation of chicken manure: Ammonia inhibition and recirculation of the digestate
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DOI：
10.1016/j.biortech.2014.09.029
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发表时间：
2015-02-01
影响因子：
11.4
通讯作者：
Liebetrau, Jan
中科院分区：
文献类型：
--
作者：
Nie, Hong;Jacobi, H. Fabian;Liebetrau, Jan
在实验室规模的连续搅拌反应器中，在40 ℃下研究了氨浓度对鸡粪单发酵性能和稳定性的影响。进行技术汽提以从碳酸氢盐的液体级分中除去氨，并将全部产物再循环至发酵罐以控制发酵罐中的氨浓度。有机负荷（OLR）为5.3gVS/（Ld），平均游离氨氮（FAN）浓度为0.77g/L，比产气率为0.39L/gVS。当OLR提高到6.0 gVS/（L d）时，FAN平均浓度为0.86 g/L，比产气率为0.27 L/gVS，运行稳定。在高氨浓度条件下，成功地进行了鸡粪的单发酵。受控再循环的处理后的液体馏分的重金属状态可以是一个解决方案，在大规模应用，以避免氨抑制和最大限度地减少重金属状态。(C)2014爱思唯尔有限公司版权所有。
The effects of ammonia concentration on the performance and stability of mono-fermentation of chicken manure were investigated in a lab-scale continuous stirred tank reactor at 40 degrees C. Technical stripping was performed to remove ammonia from the liquid fraction of digestate, and the entire product was recycled to the fermenter to control ammonia concentration in the fermenter. Organic loading rate (OLR) of 5.3 gVS/(L d) was achieved with an average free ammonia nitrogen (FAN) concentration of 0.77 g/L and a specific gas yield of 0.39 L/gVS. When OLR was increased to 6.0 gVS/(L d), stable operation could be obtained with an average FAN concentration of 0.86 g/L and a specific gas yield of 0.27 L/gVS. Mono-fermentation of chicken manure was successfully carried out at high ammonia concentrations. Controlled recirculation of treated liquid fraction of digestate could be a solution in large-scale application for both: to avoid ammonia inhibition and minimize digestate. (C) 2014 Elsevier Ltd. All rights reserved.