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Stable operation du...
Stable operation during pilot-scale anaerobic digestion of nutrient-supplemented maize/sugar beet silage
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- Ivo Achu, Nges (author)
- Lund University,Lunds universitet,Bioteknik,Centrum för tillämpade biovetenskaper,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biotechnology,Center for Applied Life Sciences,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Department of Biotechnology, Lund Univeristy
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- Björn, Annika, 1972- (author)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Björnsson, Lovisa (author)
- Lund University,Lunds universitet,Miljö- och energisystem,Institutionen för teknik och samhälle,Institutioner vid LTH,Lunds Tekniska Högskola,Environmental and Energy Systems Studies,Department of Technology and Society,Departments at LTH,Faculty of Engineering, LTH,Department of Biotechnology, Lund University
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(creator_code:org_t)
- Elsevier, 2012
- 2012
- English.
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In: Bioresource Technology. - : Elsevier. - 0960-8524 .- 1873-2976. ; 118, s. 445-454
- Related links:
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Biogas production from maize/sugar beet silage was studied under mesophilic conditions in a continuous stirred tank reactor pilot-scale process. While energy crop mono-digestion is often performed with very long hydraulic retention times (HRTs), the present study demonstrated an efficient process operating with a 50-day HRT and a corrected total solids (TScorr) based organic loading rate of 3.4 kg/m3×d. The good performance was attributed to supplementation with both macro- and micronutrients and was evidenced by good methane yields (318 m3/ton TScorr) which were comparable to laboratory maximum expected yields plus low total volatile fatty acid concentrations (< 0.8 g/L). A viscoplastic and thixotropic digester fluid behaviour was observed, and the viscosity problems common in crop mono-digestion were not seen in this study. The effluent also complied with Swedish certification standards for bio-fertilizer for farmland application. Nutrient addition thus rendered a stable biogas process, while the effluent was a good quality bio-fertilizer.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology (hsv//eng)
Keyword
- Bio-fertilizer
- Biogas
- Energy crops
- Macronutrients
- Micronutrients
- Biogas
- Bio-fertilizer
- Energy crops
- Macronutrients
- Micronutrients
Publication and Content Type
- ref (subject category)
- art (subject category)
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