Changes in Microorganisms Flora during Cattle Manure Composting, Processing by Small-scale Composting Reactor

Abstract

Using SCR (small-scale composting reactor), cattle manure was bio-degraded and composted. The heat and CO₂ generation increased, as processing of compost. During composting all 16SrDNA of microorganisms was directly extracted from the composted matter by SCR and analyzed by ARDRA (Amplified Ribosomal DNA Restriction Analysis). It was found that CO₂ generation was not related with the number of microorganisms living in the matter but rather with the changing of microorganism flora. When the cattle manure was composting, the addition of a little wheat bran to composting matter accelerated the generation of CO₂ and heat, causing significant changes in the microorganism flora.