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Effect of initial C/N ratio on composting of two‐phase olive mill pomace, dairy manure, and straw
Author(s) -
Ekinci Kamil,
Tosun İsmail,
Kumbul Barbaros Salih,
Şevik Fevzi,
Sülük Kemal,
Bıtrak Necati Berk
Publication year - 2020
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13517
Subject(s) - compost , pomace , straw , manure , dry matter , organic matter , pulp and paper industry , chemistry , zoology , agronomy , food science , biology , inorganic chemistry , organic chemistry , engineering
Abstract Composting plants should be operated at a high degradation rate in order to lower their capital and operational costs. Initial C/N ratio is one of the most influential factors on the composting process. This study aimed to determine the impacts of initial C/N ratio on operational composting parameters of two‐phase olive mill pomace with separated dairy manure. Five initial C/N ratios ranging from 29.43 to 43.33 were examined using fifteen 100 L cylindrical reactors. The highest decomposition rate was estimated at 0.02 day −1 with the C/N ratio of 34.49. The maximum relative heat generation was obtained with the C/N ratio of 36.07. The C/N ratio of ≅33 reduced the composting cost of process‐based total airflow supplied per dry matter and organic matter loss. The maximum throughput capacity was obtained when the compost blend had the C/N ratio of ≅37.24. It was concluded that operating the composting of two‐phase olive mill waste, separated dairy manure, and straw with the boundary of the initial C/N ratios between 33 and 37 was recommended.