title: Anaerobic codigestion of pretreated wheat straw with cattle manure and analysis of the microbial community.
abstract: Wheat straw (WS) was pretreated with four concentrations of H2O2 (1%, 2%, 3%, and 4%) and was anaerobically codigested with dairy cattle manure (CM) at various ratios from 100:0 to 0:100. Wet-state H2O2 pretreatment effectively enhanced the biodegradability and methane yield of the WS. The optimal concentration of H2O2 for treating WS was 3%. The methane yield was higher with the codigestion of CM and H2O2-treated WS than with untreated WS and higher than with H2O2-treated WS alone or CM alone. A 40:60 ratio of H2O2-treated WS mixed with CM produced the highest yield of methane (320.8 mL g volatile solid (VS)(-1)). Results of high-throughput sequencing indicated that the methanogenic community shifted during the codigestion from the acetoclastic methanogens, Methanosarcina, to the hydrogenotrophic methanogens, Methanosphaera and Methanoculleus.
authors: College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
authors: Zilin
authors: Z
authors: Song
authors: State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China. Electronic address: chaolynn@126.com.
authors: Chao
authors: C
authors: Zhang
mesh_terms: D000693:Anaerobiosis / Q000502:physiology*; D000818:Animals; D001673:Biodegradation, Environmental; D056804:Biofuels / Q000382:microbiology; D019149:Bioreactors / Q000382:microbiology*; D002417:Cattle; D006861:Hydrogen Peroxide / Q000378:metabolism; D008372:Manure / Q000382:microbiology*; D008697:Methane / Q000378:metabolism; D017013:Methanobacteriaceae / Q000378:metabolism; D019638:Methanomicrobiaceae / Q000378:metabolism; D017020:Methanosarcina / Q000378:metabolism; D014908:Triticum / Q000382:microbiology*
chemical_list: D056804:Biofuels; D008372:Manure; D006861:Hydrogen Peroxide; D008697:Methane
keywords: Cattle manure; Codigestion; H(2)O(2) pretreatment; Microbial community; Wheat straw