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  • Title: Changes in biochemical and microbiological parameters during the period of rapid composting of dairy manure with rice chaff.
    Author: Liu D, Zhang R, Wu H, Xu D, Tang Z, Yu G, Xu Z, Shen Q.
    Journal: Bioresour Technol; 2011 Oct; 102(19):9040-9. PubMed ID: 21835612.
    Abstract:
    Various parameters were measured during the period of composting of dairy manure and rice chaff in different ratios (dairy manure/rice chaff=V/V, pile 1: 75/25; pile 2: 80/20; pile 3: 85/15) to evaluate their suitability as indicators for the composting process. The temperature in pile 1 increased rapidly and remained above 60 °C for 30 days, while the temperature in pile 3 increased slowly relative to the other two piles. Furthermore, the degradation of organic substrates, as indicated by the reduction of C/N ratio, was rapid in pile 1 (below 20% 28 days after beginning of the composting). The major fluctuations of various water-soluble fractions in all piles were observed during the first 3 weeks, and the results in general showed that the highest microbial populations and enzymatic activities also appeared in this phase. Various parameters indicated that the rapid composting method was a feasible one for treating agricultural wastes.
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