Abstract
Microorganism population in two-phase anaerobic fermentation of separated liquid of dairy manure
Highlights
With the rapid development of Chinese livestock industry, the environmental pollution caused by livestock and poultry gains more attention
The results showed that Volatile Solid (VS) methane yield of Separated liquid (SL) was 124.51 L/kg VS, which was 2.09 times higher than that of diluted dairy manure (DDM) (59.50 L/kg VS) in batch anaerobic fermentation
The results showed that the lignocellulose content of SL was greatly reduced, the granule radius decreased significantly, and carbon and nitrogen (C/N) was closed to 20:1
Summary
With the rapid development of Chinese livestock industry, the environmental pollution caused by livestock and poultry gains more attention. Waste heap and discharge have a direct or indirect negative impact on water, air and soil for human health and ecosystems[1,2,3], as well as the wasting of organic matter. Anaerobic fermentation is an effective approach to transfer livestock and poultry waste to energy and value-added products. Anaerobic fermentation is a metabolic process regulated by a variety of functional microorganisms, whose diversity and dynamic changes are most influential factors[4]. The comprehensive monitoring and deep analysis of microorganisms will improve the understanding of anaerobic fermentation for better stabilization of the fermentation system. Traditional method was not able to monitor process completely due to the complexity and the quantity of microorganisms[5]
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