Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt; Department of Microbiology and Immunology, Assiut University, Assuit 71515, Egypt.
Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt.
Bioresour Technol. 2020 Aug;309:123350. doi: 10.1016/j.biortech.2020.123350. Epub 2020 Apr 8.
Herein, the design of nanocomposite (NC) formulations that consist of metal enzyme cofactors, highly conductive carbon materials, DIET activators, to boost AD biogas production from anaerobically incubated cattle manure are investigated and discussed. Three different NC formulations were designed and synthesized: zinc ferrite (ZnFe), ZnFe with 10% carbon nanotubes (ZFCNTs), and zinc ferrite with 10% C76 fullerene (ZFC76). The structure and morphology of the nano-additives were investigated via x-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive x-ray (EDX), and transmission electron microscopy (TEM). NCs were supplemented to lab-scale biodigesters containing organic slurry. Biogas production was monitored daily and compared to blank biodigesters for 50 days. The maximum methane enhancement was obtained for ZnFe, which promoted methane production to 185.3%. ZFCNTs and ZFC76 showed a positive impact on the hydraulic retention time and enhanced methane production to 162% and 145.9%, respectively compared to the blank reactors.
本文研究并讨论了由金属酶辅因子、高导电性碳材料和 DIET 激活剂组成的纳米复合材料 (NC) 配方的设计，以提高从厌氧孵育的牛粪中产生的 AD 沼气产量。设计并合成了三种不同的 NC 配方：锌铁氧体 (ZnFe)、含 10% 碳纳米管的 ZnFe (ZFCNTs) 和含 10% C76 富勒烯的锌铁氧体 (ZFC76)。通过 X 射线衍射 (XRD)、场发射扫描电子显微镜 (FESEM)、能谱 (EDX) 和透射电子显微镜 (TEM) 研究了纳米添加剂的结构和形态。NCs 被添加到含有有机浆液的实验室规模生物消化器中。每天监测沼气产量，并与空白生物消化器进行 50 天的比较。ZnFe 的甲烷增强效果最佳，将甲烷产量提高到 185.3%。ZFCNTs 和 ZFC76 对水力停留时间有积极影响，与空白反应器相比，甲烷产量分别提高到 162%和 145.9%。
