Enhanced anaerobic mono- and co -digestion under mesophilic condition: Focusing on the magnetic field and Ti -sphere core?shell structured additives
Enhanced anaerobic mono- and co -digestion under mesophilic condition: Focusing on the magnetic field and Ti -sphere core?shell structured additives
复制标题
中温条件下增强厌氧单消化和共消化：聚焦磁场和钛球核壳结构添加剂
DOI：
10.1016/j.biortech.2020.123450
复制
发表时间：
2020-08-01
影响因子：
11.4
通讯作者：
Xing, Tian
中科院分区：
文献类型：
--
作者：
Jia, Bo;Yun, Sining;Xing, Tian
提高厌氧消化性能是其大规模应用的迫切需要。在本研究中，同时引入磁场（0-30 mT）和钛球核壳结构添加剂（Ti-1和Ti-2）进行厌氧单消化和共消化。与对照组相比，在优化磁场强度（5 mT）下，钛球核壳结构添加剂单消化体系的沼气产量提高27.12% ~ 65.53%，共消化体系的沼气产量提高8.47% ~ 35.89%。同时，与钛球核壳结构添加剂厌氧单消化和厌氧共消化对总化学需氧量的降解率分别为54.68% ~ 69.14%和53.03% ~ 78.25%。添加钛球核壳结构添加剂的消化液具有显著的稳定性（45.24% ~ 53.17%）和肥力（4.85% ~ 4.97%）。本研究阐明了磁场在AD体系中的作用，并为理解钛球核壳结构添加剂诱导的强化甲烷生成途径提供了可能的机制。
Enhancing anaerobic digestion performance is highly desired for its large-scale application. In the present work, magnetic fields (0–30 mT) and Ti-sphere core–shell structured additives (Ti-1 and Ti-2) are simultaneously introduced in anaerobic mono-digestion and co-digestions. Compared with the control group, the Ti-sphere core–shell structured additives increase the biogas yield by 27.12%–65.53% for mono-digestion and 8.47%–35.89% for co-digestion systems under the optimized magnetic field intensity (5 mT), respectively. Meanwhile, the degradation rate of total chemical oxygen demand is 54.68%–69.14% for anaerobic mono-digestion and 53.03%–78.25% for anaerobic co-digestion with Ti-sphere core–shell structured additives, respectively. The digestate with Ti-sphere core–shell structured additives exhibits the remarkable stability (45.24%–53.17%) and fertility (4.85%–4.97%). This work clarifies the effect of magnetic field in AD system, and proposes a possible mechanism for understanding the enhanced methanogenesis pathways induced by Ti-sphere core–shell structured additives.