Three-stage anaerobic co-digestion of food waste and horse manure.

Sci Rep · 2017 · PMC5430929 · PMID 28455509

Europe PMC DOI

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hardly significantno p-value reported

During the initial 20 days, the methane yields in the three digesters were hardly significant as the low OLR of 2.5 to 3.76 g VS/L.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.