Author:
Ruxiang Cen,Ruiying Chen,Tianyun Pu,Chunyan Huang,Tengbing He,Guangliang Tian
Abstract
AbstractIn this study, a high frequency monitoring method was used to assess how semi-continuous feeding affects H2S production in high solid anaerobic digestion. The results showed that H2S characteristics at a monitoring frequency of 1 point/3 h were different to that of 1 point/24 h, its concentration decreased from 3449 ± 227 mg/m3 at 0 h to 298 ± 45 mg/m3 at 3 h. H2S concentration was negatively correlated with volatile fatty acids (VFAs), and oxidation reduction potential (ORP). 72–82% of H2S reduction in the first 3 h resulted from the introduction of O2 during feeding, and 18–28% of that was closely related to the production of a large quantity of soluble acidic matter, such as VFAs. A more accurate H2S release model was established according to the content of VFAs. Totally, this study implies that feed carrying air is a promising method for in situ control of H2S production in anaerobic digestion.
Graphical Abstract
Funder
Special Research Fund of Natural Science of Guizhou University
Action plan project for service enterprises of scientific research institutions in Guizhou Province
Basic Condition Platform Construction Project of Science and Technology Department of Guizhou Province
Publisher
Springer Science and Business Media LLC
Subject
Renewable Energy, Sustainability and the Environment,Biomedical Engineering,Food Science,Biotechnology
Cited by
1 articles.
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