随着全球能源问题的日益突出,社会经济活动受到严重影响。生物燃料,作为一种可再生能源,对促进可持续发展具有重要意义。在这项研究中,研究了在添加氧化铁(Fe3O4)纳米颗粒后,frass(黑兵蝇幼虫生物转化后的猪粪)和与玉米秸秆的共消化的分批厌氧消化(AD),以及没有接种的启动期。使用空白1组和添加各种尺寸的Fe3O4纳米颗粒30天后,获得了纯frass的生化甲烷潜力,同样,用稻草(空白2)和添加各种尺寸的Fe3O4纳米颗粒61天之后的消化。结果表明,平均产气量为209.43mL/gVS,197.68mL/gVS,151.85mL/gVS,空白为238.15mL/gVS,~176nm,~164nm,和〜184nm,分别。秸秆(空白2)平均产气量为261.64mL/gVS,259.62mL/gVS,241.51mL/gVS,空白2为285.98mL/gVS,~176nm,~164nm,和〜184nm,分别。同时,~184nm组的累积甲烷产量为2312.98mL和10,952.96mL,分别,与其他组相比,这显著增加了沼气产量。甲烷生成的结果(30天)表明,甲烷,甲烷,甲烷和甲烷是AD反应器中重要的产甲烷物种,而~184nm组的微生物多样性最佳,这可能是约184nm产气高的原因。
With the increasing prominence of the global energy problem, socioeconomic activities have been seriously affected. Biofuels, as a renewable source of energy, are of great significance in promoting sustainable development. In this study, batch anaerobic digestion (AD) of frass (swine manure after bioconversion by black soldier fly larvae) and co-digestion with corn straw after the addition of iron oxide (Fe3O4) nanoparticles is investigated, as well as the start-up period without inoculation. The biochemical methane potential of pure frass was obtained using blank 1 group and after the addition of various sizes of Fe3O4 nanoparticles for 30 days period, and similarly, the digestion of frass with straw (blank 2) and after the addition of various sizes of Fe3O4 nanoparticles for 61 days period. The results showed that the average gas production was 209.43 mL/gVS, 197.68 mL/gVS, 151.85 mL/gVS, and 238.15 mL/gVS for the blank, ~176 nm, ~164 nm, and ~184 nm, respectively. The average gas production of frass with straw (blank 2) was 261.64 mL/gVS, 259.62 mL/gVS, 241.51 mL/gVS, and 285.98 mL/gVS for blank 2, ~176 nm, ~164 nm, and ~184 nm, respectively. Meanwhile, the accumulated methane production of the ~184 nm group was 2312.98 mL and 10,952.96 mL, respectively, which significantly increased the
biogas production compared to the other groups. The methanogenic results of the frass (30 days) indicated that Methanocorpusculum, Methanosarcina, and Methanomassiliicoccus are the important methanogenic species in the AD reactor, while the microbial diversity of the ~184 nm group was optimal, which may be the reason for the high gas production of ~184 nm.