Optimization of fermentation factors to enhance rice straw degradation ability using a microbial consortium LZF-12
作者机构：College of EngineeringNortheast Agricultural UniversityHarbin 150030China Key Laboratory of Pig-breeding Facilities EngineeringMinistry of Agriculture and Rural AffairsHarbin 150030China Heilongjiang Key Laboratory of Technology and Equipment for the Utilization of Agricultural Renewable ResourcesHarbin 150030China
出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)
年 卷 期：2019年第12卷第3期
页 面：168-173页
核心收录：
基 金：This work was supported by Heilongjiang Province Natural Science Fund(E2015023) The National Key Research and Development Program of China(2017YFD0700705) Heilongjiang Province Postdoctoral Launch Fund(LBH-Q13023)
主 题：microbial consortium biological pretreatment biodegradation rice straw optimization
摘 要：Biological pretreatment has broad application prospects in agricultural waste treatment because of its economic benefits,environmental protection and energy saving *** this study,a microbial consortium LZF-12 was applied for a biological pretreatment to degrade rice *** experiments were performed under hydrolysis conditions by using the method of Box-Behnken factorial design(BBD).The results showed that the model multiple correlation coefficient R2 was 0.9816,and the effects of three factors on the degradation of rice straw of LZF-12 as descending order were the initial rice content,chicken manure content,and initial pH *** interaction between straw concentration,chicken manure concentration,and initial pH value had significant effects on the degradation of a microbial *** the optimum conditions of 0.86%rice straw,0.5%chicken manure and the initial pH value of 7.0,the degradation rate of rice straw reached 72.4%.There is only a small difference of 0.55%between the experimental value and predicted value from BBD ***,it is feasible for the established model due to the consistent results between the prediction and experimental *** microbial consortium LZF-12 has high cellulase enzyme activities and degradation ability over a wide range of temperature and pH value,indicating that it has a good development potential and application prospects in waste biodegradation and biomass energy production.
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