Effect of pretreatment by a microbial consortium on methane production of waste paper and cardboard.
A microbial consortium MC1 was used to pretreat filter paper, office paper, newspaper, and cardboard to enhance methane production. The results of pretreatment indicated that sCOD of hydrolysates of the four substrates increased significantly in the early stage, and peaked on day 7. During pretreatment, ethanol, acetic acid, propionic acid, butyric acid, and glycerol were the predominant volatile organic products in hydrolysates. MC1 had strong degradation ability on the four substrates, and the weight loss of filter paper, office paper, newspaper, and cardboard reached 78.3%, 80.5%, 39.7%, and 49.7%, respectively. The results of anaerobic digestion showed that methane production yields and rates of the four substrates significantly increased after pretreatment. This study is the first attempt to explore the microbial pretreatment method for anaerobic digestion of waste paper and cardboard. Microbial consortium pretreatment could be an effective method for enhancing methane production of waste paper and cardboard into bioenergy.
College of Agronomy and Biotechnology/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China.
Xufeng
X
Yuan
Yanzhuan
Y
Cao
Jiajia
J
Li
Boting
B
Wen
Wanbin
W
Zhu
Xiaofen
X
Wang
Zongjun
Z
Cui
D000693:Anaerobiosis; D057919:Biological Oxygen Demand Analysis; D002482:Cellulose / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D008697:Methane / Q000096:biosynthesis*; D059013:Microbial Consortia / Q000502:physiology*; D010209:Paper; D011134:Polysaccharides / Q000737:chemistry; D055549:Volatile Organic Compounds / Q000032:analysis; D014866:Waste Products
D011134:Polysaccharides; D055549:Volatile Organic Compounds; D014866:Waste Products; C007916:hemicellulose; D002482:Cellulose; D008697:Methane