水力停留时间
制浆造纸工业
化学
制氢
己酸
厌氧消化
发酵
废水
废物管理
食品科学
氢
环境科学
环境工程
有机化学
甲烷
工程类
作者
Danilo Henrique Donato Rocha,Francisco Rafael Sousa Freitas,Isabel Kimiko Sakamoto,Edson Luiz Silva,Maria Bernadete Amâncio Varesche
标识
DOI:10.1016/j.ijhydene.2023.10.289
摘要
The Leach Bed Reactor (LBR) application is a promising alternative for the anaerobic digestion of solid waste and wastewater. In this study, the LBR was continuously operated for 160 days in four different phases, for co-fermentation of solid and liquid waste from the citrus agroindustry, at 37 °C, evaluating the effect of hydraulic retention time (HRT) and organic loading rate (OLR). The maximum volumetric hydrogen production (VHPR) was observed at an HRT of 12h (958.3 mLH2.L-1.d-1); however, the highest hydrogen yield (HY) was identified at an HRT of 24h (104.9 mLH2.g-1CHO). Based on the metabolic characteristics of microorganisms identified in higher relative abundance, by 16S rRNA sequencing, such as Lactobacillus, Caproicoproducens, Bifidobacterium, Olsenella, and Solobacterium, an occurrence of chain elongation pathways in the production of butyric and caproic acids was inferred, with hydrogen production resulting from the lactic acid oxidation. The maximum electricity production potential of 16.3 kWh.m-3 liquor was estimated.
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