College of Agronomy and Biotechnology, Biomass Engineering Center, China Agricultural University, Beijing 100193, China.
College of Agronomy and Biotechnology, Biomass Engineering Center, China Agricultural University, Beijing 100193, China.
Bioresour Technol. 2018 Oct;266:166-175. doi: 10.1016/j.biortech.2018.06.061. Epub 2018 Jun 21.
The addition of trace elements to aid anaerobic digestion has already been widely studied. However, the effects of rare trace elements on anaerobic digestion remain unclear. In this study, the effects of Mo, Se and Mn on anaerobic digestion of rice straw were explored. The results showed the methane yield increased by 59.3%, 47.1% and 48.9% in the first 10 days following addition of Mo (0.01 mg/L), Se (0.1 mg/L) and Mn (1.0 mg/L), respectively. Toxic effects and the accumulation of volatile fatty acids (VFAs) were observed when the Se, Mo and Mn concentrations were greater than 100, 1000 and 1000 mg/L, respectively. The half-maximal inhibitory concentrations (IC) for Se, Mn and Mo were 79.9 mg/L, 773.9 mg/L and 792.3 mg/L, respectively. The addition of trace elements has changed the bacterial structure of the bacteria, which in turn has affected the digestion performance.
添加微量元素来辅助厌氧消化已经得到了广泛的研究。然而，稀有微量元素对厌氧消化的影响仍不清楚。在本研究中，探讨了钼、硒和锰对稻草厌氧消化的影响。结果表明，添加 0.01mg/L 的钼、0.1mg/L 的硒和 1.0mg/L 的锰分别在第 10 天前使甲烷产量增加了 59.3%、47.1%和 48.9%。当硒、钼和锰的浓度分别大于 100、1000 和 1000mg/L 时，会观察到毒性效应和挥发性脂肪酸（VFAs）的积累。硒、锰和钼的半最大抑制浓度（IC）分别为 79.9mg/L、773.9mg/L 和 792.3mg/L。微量元素的添加改变了细菌的结构，进而影响了消化性能。
