Assessment of the biochemical methane potential of mono- and co-digested dairy farm wastes.

Clicks: 190
ID: 42103
2019
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Ranked #23 of 37 articles by views in Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA

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Abstract
This study aimed to evaluate the methane potential of mono- and co-digested dairy farm wastes. The tested substrates included manure from lactating, dry, and young cows, as well as waste milk and feed waste. The highest methane yield was achieved from the lactating cow manure, which produced an average of 412 L of CH kg volatile solids, followed by young and dry cow manures (332 and 273 L of CH kg volatile solids, respectively). Feed and milk yielded an average of 325 and 212 L of CH kg volatile solids, respectively. Co-digesting the manures from lactating and young cows with feed improved methane production by 7%. However, co-digesting the dry cow manure with feed achieved only 85% of the calculated methane yield. Co-digesting manure and milk at a ratio of 70:30 enhanced the methane potential from lactating, dry, and young cow manures by 19, 30, and 37%, respectively. Moreover, co-digesting lactating, dry, and young cow manures with milk at a ratio of 30:70 enhanced the methane yield by 60, 30, and 88%, respectively. The cumulative methane production of all samples was accurately described using the Gompertz model with a maximum error of 10%. Carbohydrates contributed the most to methane potential, while proteins and lipids were limiting.
Reference Key
adghim2019assessmentwaste Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Adghim, Mohamad;Abdallah, Mohamed;Saad, Suhair;Shanableh, Abdallah;Sartaj, Majid;
Journal Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA
Year 2019
DOI
10.1177/0734242X19871999
URL
Keywords Keywords not found

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