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Effect of inoculation with multiple composite microorganisms on characteristics of humic fractions and bacterial community structure during biogas residue and livestock manure co‐composting
Author(s) -
Song Caihong,
Li Mingxiao,
Wei Zimin,
Jia Xuan,
Xi Beidou,
Liu Dongming,
Zhu Chaowei,
Pan Hongwei
Publication year - 2016
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.4554
Subject(s) - compost , humus , manure , microorganism , chemistry , biogas , humic acid , inoculation , food science , residue (chemistry) , chicken manure , agronomy , bacteria , horticulture , waste management , biology , organic chemistry , fertilizer , genetics , ecology , soil water , engineering
BACKGROUND It is necessary to inoculate microbes in the composting of special materials. Biogas residue ( BR ) is rich in refractory lignocellulose. To improve humification processes of BR composting, composite microorganisms ( CMs ), with multiple functions, were added to the mixture of BR and animal manure. RESULTS The results indicated that four humification indices ( DP , PHA , HR , HI ) were all markedly higher in the inoculated compost (0.46, 27.5, 43.34, 11.92) than in the uninoculated compost (0.39, 22.53, 28.56, 6.49) ( P < 0.05). The inoculation increased the degree of polycondensation and aromatization, and molecular size, as well as the humification degree of BR compost as determined by fluorescence spectroscopy and fluorescence regional integration analysis of humic acids, fulvic acids and hydrophilic fraction, three chemically isolated fractions. Additionally, the inoculation increased the quantity and diversity of indigenous microorganisms and accelerated their proliferation by adjusting environmental conditions to optimize their growth. CONCLUSION The CMs inoculant is suitable for BR composting and inoculating based on the composition of the composting substrate could enhance composting efficiency and improve compost quality. © 2014 Society of Chemical Industry