Effect of Clinoptilolite and Halloysite Addition on Biogas Production and Microbial Community Structure during Anaerobic Digestion
| Autor: | Przemyslaw Decewicz, Tomasz Bajda, Martyna Ciezkowska, Lukasz Drewniak, Lukasz Dziewit |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
anaerobic digestion
Silage 020209 energy 02 engineering and technology 010501 environmental sciences engineering.material lcsh:Technology 01 natural sciences Halloysite Article Biogas 0202 electrical engineering electronic engineering information engineering biogas General Materials Science zeolite halloysite lcsh:Microscopy lcsh:QC120-168.85 0105 earth and related environmental sciences microorganisms immobilization Clinoptilolite lcsh:QH201-278.5 sewage sludge lcsh:T Chemistry Chemical oxygen demand Pulp and paper industry Anaerobic digestion lcsh:TA1-2040 engineering lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering microbial community lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 maize silage Sludge Mesophile |
| Zdroj: | Materials Volume 13 Issue 18 Materials, Vol 13, Iss 4127, p 4127 (2020) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13184127 |
| Popis: | The study presents a comparison of the influence of a clinoptilolite-rich rock&mdash zeolite (commonly used for improving anaerobic digestion processes)&mdash and a highly porous clay mineral, halloysite (mainly used for gas purification), on the biogas production process. Batch experiments showed that the addition of each mineral increased the efficiency of mesophilic anaerobic digestion of both sewage sludge and maize silage. However, halloysite generated 15% higher biogas production during maize silage transformation. Halloysite also contributed to a much higher reduction of chemical oxygen demand for both substrates (by ~8% for maize silage and ~14% for sewage sludge) and a higher reduction of volatile solids and total ammonia for maize silage (by ~8% and ~4%, respectively). Metagenomic analysis of the microbial community structure showed that the addition of both mineral sorbents influenced the presence of key members of archaea and bacteria occurring in a well-operated biogas reactor. The significant difference between zeolite and halloysite is that the latter promoted the immobilization of key methanogenic archaea Methanolinea (belong to Methanomicrobia class). Based on this result, we postulate that halloysite could be useful not only as a sorbent for (bio)gas treatment methodologies but also as an agent for improving biogas production. |
| Databáze: | OpenAIRE |
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