Functional Materials Laboratory (FML), School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China.
Functional Materials Laboratory (FML), School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China.
Bioresour Technol. 2020 Aug;310:123450. doi: 10.1016/j.biortech.2020.123450. Epub 2020 Apr 27.
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.
提高厌氧消化性能因其大规模应用而备受期待。本工作在厌氧单消化和共消化中同时引入磁场（0-30 mT）和 Ti 球核壳结构添加剂（Ti-1 和 Ti-2）。与对照组相比，在优化的磁场强度（5 mT）下，Ti 球核壳结构添加剂使单消化和共消化系统的沼气产量分别提高了 27.12%-65.53%和 8.47%-35.89%。同时，Ti 球核壳结构添加剂使厌氧单消化和厌氧共消化的总化学需氧量降解率分别达到 54.68%-69.14%和 53.03%-78.25%。添加 Ti 球核壳结构添加剂的消化液表现出显著的稳定性（45.24%-53.17%）和肥力（4.85%-4.97%）。这项工作阐明了磁场在 AD 系统中的作用，并提出了一种可能的机制来理解 Ti 球核壳结构添加剂诱导的增强产甲烷途径。
