当前位置: X-MOL 学术Biomass Convers. Biorefin. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Evaluation of batch mesophilic anaerobic digestion of raw and trampled llama and dromedary dungs: methane potential and kinetic study
Biomass Conversion and Biorefinery ( IF 4 ) Pub Date : 2022-01-15 , DOI: 10.1007/s13399-021-02255-6
M. J. Fernández-Rodríguez 1, 2 , D. de la Lama-Calvente 2 , R. Borja 2 , J. M. Mancilla-Leytón 3
Affiliation  

This research was carried out with the aim to evaluate the anaerobic digestion (AD) of llama and dromedary dungs (both untreated and trampled) in batch mode at mesophilic temperature (35 °C). The biochemical methane potential (BMP) tests with an inoculum to substrate ratio of 2:1 (as volatile solids (VS)) were carried out. The methane yield from trampled llama dung (333.0 mL CH4 g−1 VSadded) was considerably higher than for raw llama, raw and trampled dromedary dungs (185.9, 228.4, 222.9 mL CH4 g−1 VSadded, respectively). Therefore, trampled llama dung was found to be the best substrate for methane production due to its high content of volatile solids as well as its high nitrogen content (2.1%) and more appropriate C/N ratio (23.6) for AD. The experimental data was found to be in accordance with both first-order kinetic and transference function mathematical models, when evaluating the experimental methane production against time. By applying the first-order kinetic model, the hydrolysis rate constants, kh, were found to be 19% and 11% higher for trampled dungs in comparison with the raw dung of dromedary and llama, respectively. In addition, the maximum methane production rate (Rm) derived from the transference function model for trampled llama dung (22.0 mL CH4 g−1 VS d−1) was 83.3%, 24.4% and 22.9% higher than those obtained for raw llama manure and for raw and trampled dromedary dungs, respectively.



中文翻译:

生的和践踏的骆驼和单峰骆驼粪便的批量中温厌氧消化的评价:甲烷势和动力学研究

进行这项研究的目的是评估在中温(35°C)下以间歇模式对骆驼和单峰骆驼粪便(未经处理和踩踏)进行厌氧消化(AD)。进行了接种物与底物比率为 2:1(作为挥发性固体 (VS))的生化甲烷势 (BMP) 测试。被踩踏的骆驼粪便(添加333.0 mL CH 4 g -1 VS )的甲烷产量显着高于生骆驼、生的和踩踏的单峰骆驼粪便(添加185.9、228.4、222.9 mL CH 4 g -1 VS ), 分别)。因此,踩踏的骆驼粪被发现是产生甲烷的最佳基质,因为它的挥发性固体含量高,氮含量高(2.1%)和更适合 AD 的 C/N 比(23.6)。在评估实验甲烷产量随时间变化时,发现实验数据符合一级动力学和传递函数数学模型。通过应用一级动力学模型,发现与单峰骆驼和美洲驼的原始粪便相比,踩过的粪便的水解速率常数k h分别高出 19% 和 11%。此外,最大甲烷产率(R m) 从迁移函数模型推导出来的被践踏的骆驼粪便 (22.0 mL CH 4 g -1 VS d -1 ) 分别比生骆驼粪和生的和踩踏的单峰骆驼粪便高 83.3%、24.4% 和 22.9% .

更新日期:2022-01-16
down
wechat
bug