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Synergism and effect of high initial volatile fatty acid concentrations during food waste and pig manure anaerobic co-digestion
descriptionPublicationkeyboard_double_arrow_right Article , Journal 2016Publisher:Elsevier BVPublicly funded
Authors: Conor Dennehy; Peadar G. Lawlor; Thomas Croize; Yan Jiang; +3 Authors
Conor Dennehy; Peadar G. Lawlor; Thomas Croize; Yan Jiang; Liam Morrison; Gillian E. Gardiner; Xinmin Zhan;
doi: 10.1016/j.wasman.2016.06.032
pmid: 27389859
doi: 10.1016/j.wasman.2016.06.032
pmid: 27389859
Anaerobic co-digestion of food waste (FW) and pig manure (PM) was undertaken in batch mode at 37°C in order to identify and quantify the synergistic effects of co-digestion on the specific methane yield (SMY) and reaction kinetics. The effects of the high initial volatile fatty acid (VFA) concentrations in PM on synergy observed during co-digestion, and on kinetic modelling were investigated. PM to FW mixing ratios of 1/0, 4/1, 3/2, 2/3, 1/4 and 0/1 (VS basis) were examined. No VFA or ammonia inhibition was observed. The highest SMY of 521±29ml CH4/gVS was achieved at a PM/FW mixing ratio of 1/4. Synergy in terms of both reaction kinetics and SMY occurred at PM/FW mixing ratios of 3/2, 2/3 and 1/4. Initial VFA concentrations did not explain the synergy observed. Throughout the study the conversion of butyric acid was inhibited. Due to the high initial VFA content of PM, conventional first order and Gompertz models were inappropriate for determining reaction kinetics. A dual pooled first order model was found to provide the best fit for the data generated in this study. The optimal mixing ratio in terms of both reaction kinetics and SMY was found at a PM/FW mixing ratio of 1/4.
Waste Managementarrow_drop_down
Waste Management
Article . 2016 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
https://pubmed.ncbi.nlm.nih.go...
Article . 2017
Data sources: Europe PubMed Central
Waste Management
Journal
Data sources: Microsoft Academic Graph
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Waste Managementarrow_drop_down
Waste Management
Article . 2016 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
https://pubmed.ncbi.nlm.nih.go...
Article . 2017
Data sources: Europe PubMed Central
Waste Management
Journal
Data sources: Microsoft Academic Graph
linkLink to
shareshareShare
citeCite
addClaim
Please grant OpenAIRE to access and update your ORCID works.
This Research product is the result of merged Research products in OpenAIRE.

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This Research product is the result of merged Research products in OpenAIRE.

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Synergism and effect of high initial volatile fatty acid concentrations during food waste and pig manure anaerobic co-digestion
descriptionPublicationkeyboard_double_arrow_right Article , Journal 2016Publisher:Elsevier BVPublicly funded
Authors: Conor Dennehy; Peadar G. Lawlor; Thomas Croize; Yan Jiang; +3 Authors
Conor Dennehy; Peadar G. Lawlor; Thomas Croize; Yan Jiang; Liam Morrison; Gillian E. Gardiner; Xinmin Zhan;
doi: 10.1016/j.wasman.2016.06.032
pmid: 27389859
doi: 10.1016/j.wasman.2016.06.032
pmid: 27389859
Anaerobic co-digestion of food waste (FW) and pig manure (PM) was undertaken in batch mode at 37°C in order to identify and quantify the synergistic effects of co-digestion on the specific methane yield (SMY) and reaction kinetics. The effects of the high initial volatile fatty acid (VFA) concentrations in PM on synergy observed during co-digestion, and on kinetic modelling were investigated. PM to FW mixing ratios of 1/0, 4/1, 3/2, 2/3, 1/4 and 0/1 (VS basis) were examined. No VFA or ammonia inhibition was observed. The highest SMY of 521±29ml CH4/gVS was achieved at a PM/FW mixing ratio of 1/4. Synergy in terms of both reaction kinetics and SMY occurred at PM/FW mixing ratios of 3/2, 2/3 and 1/4. Initial VFA concentrations did not explain the synergy observed. Throughout the study the conversion of butyric acid was inhibited. Due to the high initial VFA content of PM, conventional first order and Gompertz models were inappropriate for determining reaction kinetics. A dual pooled first order model was found to provide the best fit for the data generated in this study. The optimal mixing ratio in terms of both reaction kinetics and SMY was found at a PM/FW mixing ratio of 1/4.
Waste Managementarrow_drop_down
Waste Management
Article . 2016 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
https://pubmed.ncbi.nlm.nih.go...
Article . 2017
Data sources: Europe PubMed Central
Waste Management
Journal
Data sources: Microsoft Academic Graph
linkLink to
shareshareShare
citeCite
addClaim
Please grant OpenAIRE to access and update your ORCID works.
This Research product is the result of merged Research products in OpenAIRE.

You have already added works in your ORCID record related to the merged Research product.
This Research product is the result of merged Research products in OpenAIRE.

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For further information contact us at helpdesk@openaire.eu
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bronze
108
citations 108
popularity Top 1%
influence Top 10%
impulse Top 1%
Powered by BIP!
more_vert
Waste Managementarrow_drop_down
Waste Management
Article . 2016 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
https://pubmed.ncbi.nlm.nih.go...
Article . 2017
Data sources: Europe PubMed Central
Waste Management
Journal
Data sources: Microsoft Academic Graph
linkLink to
shareshareShare
citeCite
addClaim
Please grant OpenAIRE to access and update your ORCID works.
This Research product is the result of merged Research products in OpenAIRE.

You have already added works in your ORCID record related to the merged Research product.
This Research product is the result of merged Research products in OpenAIRE.

You have already added works in your ORCID record related to the merged Research product.
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Synergism and effect of high initial volatile fatty acid concentrations during food waste and pig manure anaerobic co-digestion

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Synergism and effect of high initial volatile fatty acid concentrations during food waste and pig manure anaerobic co-digestion