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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

PERFORMANCE, MICROBIAL COMMUNITY ANALYSIS AND FERTILIZER VALUE OF ANAEROBIC CO-DIGESTION OF CATTLE MANURE WITH WASTE KITCHEN OIL

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Author(s):
Nogueira, R. G. S. [1] ; Lim, T. T. [2] ; Wang, H. [3] ; Rodrigues, P. H. M. [4]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Dept Anim Prod & Nutr, Pirassununga, SP - Brazil
[2] Univ Missouri, Dept Food Syst & Bioengn, Columbia, MO - USA
[3] Texas A&M Univ, Dept Biol & Agr Engn, College Stn, TX - USA
[4] Univ Sao Paulo, Dept Anim Prod & Nutr, Pirassunga, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: APPLIED ENGINEERING IN AGRICULTURE; v. 35, n. 2, p. 239-248, 2019.
Web of Science Citations: 0
Abstract

Co-digestion trials of beef cattle manure and waste kitchen oil (WKO) were conducted to evaluate potential increase of biogas production for a local beef farm anaerobic digester. The trials were conducted using laboratory-scale, semi-continuously loaded digesters under mesophilic conditions, with 21-day hydraulic retention time (HRT). In a preliminary test, WKO was added at 0%, 0.5%, 1.0%, 1.5%, and 2.0% by volume, each with replicate digesters (n=2), except for the 0% level, which had one digester (n=1). Methane (CH4) yield per week increased linearly with WKO levels. Populations of bacteriodetes decreased, while clostridiales and synergistales increased with the WKO levels. A second test was conducted using treatments with more replication: control (n=3), and 1.0% (n=3) and 2% (n=3) WKO levels. Methane yields of the 1.0% and 2.0% WKO levels were 79.1% and 203% higher than the control, respectively. Addition of WKO have resulted in changes of the metagenomics of the digesters. Populations of clostridiales increased, while bacteroidales and euryarchaeota methanomicrobia YC-E6 decreased with the WKO levels. The findings confirm adding low amounts (1% and 2%) of WKO as co-digestion feedstock can be an effective way to increase CH4 yield for beef operation anaerobic digestion, especially when there are available feedstock nearby. (AU)

FAPESP's process: 15/06577-3 - Reactor performance and microbial community analysis of anaerobic co-digestion of cattle manure with waste kitchen oil
Grantee:Ricardo Galbiatti Sandoval Nogueira
Support type: Scholarships abroad - Research Internship - Doctorate