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A study of the kinetics and the effect of trace elements on mixed anaerobic fermentative biogas production by ternary quadratic general rotary unitized design
- Source :
- Biotechnology & Biotechnological Equipment, Vol 30, Iss 1, Pp 90-99 (2016)
- Publication Year :
- 2016
- Publisher :
- Taylor & Francis Group, 2016.
-
Abstract
- In this study the effect of trace elements on methanogenesis was investigated during mixed anaerobic fermentation using a single-factor experiment in the present study. The most effective concentrations of Fe0, Fe2+, Co2+ and Ni2+ that were added were 1500, 250, 0.3 and 0.6 mg/L, respectively. The optimal trace element combination was 0.58 mg/L Ni2+, 1200 mg/L Fe0 and 0.34 mg/L Co2+ by the ternary quadratic general rotary unitized design method. The degree of influence exerted by trace elements on the cumulative methane yields decreased in the order of Ni2+, Fe0 and Co2+, and the maximum CH4 yield was 241.6 mL/g volatile solids (VS), according to a regression equation. The non-dissolved organic carbon hydrolytic process showed a good fit with the first-order kinetic model. The maximum value of CH4 was 312.87 mL/g VS. Compared to the control, the bioconversion efficiencies of CH4 and CO2 production increased by 36.76% and 74.50%, respectively, at the optimal trace element combination. The obtained results provide new knowledge for improvements in the efficiency of anaerobic fermentation biogas production.
Details
- Language :
- English
- ISSN :
- 13102818 and 13143530
- Volume :
- 30
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Biotechnology & Biotechnological Equipment
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1d1d385894fd463a848183bba6a4ad83
- Document Type :
- article
- Full Text :
- https://doi.org/10.1080/13102818.2015.1083886