title: Mesophilic anaerobic co-digestion of cattle manure and corn stover with biological and chemical pretreatment.
abstract: Biological and chemical pretreatment methods using liquid fraction of digestate (LFD), ammonia solution (AS), and NaOH were compared in the process of mesophilic anaerobic co-digestion of cattle manure and corn stover. The results showed that LFD pretreatment could achieve the same effect as the chemical pretreatment (AS, NaOH) at the performance of anaerobic digestion (AD). Compared with the untreated corn stover, the cumulative biomethane production (CBP) and the volatile solid (VS) removal rate of three pretreatment methods were increased by 25.40-30.12% and 14.48-16.84%, respectively, in the co-digestion of cattle manure and corn stover. T80 was 20-37.14% shorter than that of the control test (35 ± 1 days). LFD pretreatment not only achieved the same effect as chemical pretreatment, but also reduced T80 and improved buffer capacity of anaerobic digestion system. Therefore, this study provides meaningful insight for exploring efficient pretreatment strategy to stabilize and enhance AD performance for practical application.
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Yufang
authors.initials: Y
authors.lastname: Wei
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Xiujin
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USA.
authors.forename: Liang
authors.initials: L
authors.lastname: Yu
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Dexun
authors.initials: D
authors.lastname: Zou
authors.affiliation: Centre for Resource and Environmental Research, Beijing University of Chemical Technology, Beijing 100029, PR China. Electronic address: yuanhairong75@163.com.
authors.forename: Hairong
authors.initials: H
authors.lastname: Yuan
mesh_terms: D000641:Ammonia / Q000378:metabolism; D000693:Anaerobiosis / Q000502:physiology*; D000818:Animals; D002417:Cattle; D008372:Manure / Q000382:microbiology*; D008697:Methane / Q000096:biosynthesis; D003313:Zea mays / Q000382:microbiology*
chemical_list: D008372:Manure; D000641:Ammonia; D008697:Methane
keywords: Anaerobic digestion; Biological pretreatment; Cattle manure; Chemical pretreatment; Corn stover