Environ Technol. 2014 May-Jun;35(9-12):1219-25. doi: 10.1080/09593330.2013.865083.
Poultry manure is an ammonia-rich substrate due to its high content of proteins and amino acids. Ammonia is the major inhibitor of anaerobic digestion (AD) process, affecting biogas production and causing great economic losses to the biogas plants. In this study, the effect of different natural zeolite dosages on the mesophilic AD of poultry manure inoculated with a non-acclimatized to ammonia inoculum (dairy manure) was investigated. Additionally, a comparative analysis was performed between the data extracted from this study and the results of a previous study, which has been conducted under the same experimental conditions but with the use of ammonia acclimatized inoculum (swine manure). At 5 and 10 g zeolite L(-1), the methane yield of poultry manure was 43.4% and 80.3% higher compared with the experimental set without zeolite addition. However, the ammonia non-acclimatized inoculum was not efficient in digesting poultry manure even in the presence of 10 g zeolite L(-1), due to low methane production (only 39%) compared with the maximum theoretical yield. Finally, ammonia acclimatized inoculum and zeolite have demonstrated a possible 'synergistic effect', which led to a more efficient AD of poultry manure. The results of this study could potentially been used by the biogas plant operators to efficiently digest poultry manure.
家禽粪便因其富含蛋白质和氨基酸而成为一种氨含量高的基质。氨是厌氧消化（AD）过程的主要抑制剂，会影响沼气的产生，并给沼气厂造成巨大的经济损失。在这项研究中，研究了不同天然沸石剂量对用未驯化的氨接种物（牛粪）接种的中温 AD 中家禽粪便的影响。此外，还对从这项研究中提取的数据与之前在相同实验条件下进行的、但使用氨驯化接种物（猪粪）的研究结果进行了比较分析。在沸石添加量为 5 和 10 g L(-1)时，与未添加沸石的实验组相比，家禽粪便的甲烷产量分别提高了 43.4%和 80.3%。然而，由于甲烷产量（仅为 39%）与最大理论产量相比较低，未驯化的氨接种物即使在添加 10 g L(-1)沸石的情况下也不能有效地消化家禽粪便。最后，氨驯化接种物和沸石表现出了一种可能的“协同效应”，这使得家禽粪便的 AD 更有效率。这项研究的结果可能会被沼气厂的操作人员用来有效地消化家禽粪便。
