Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.
EFFECT OF UNIONIZED VOLATILE ACID ON ACIDOGENIC PERFORMANCE IN ANAEROBIC SOLID-STATE ORGANIC WASTE DEGRADATION
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Proceedings of the Seventh International Symposium, 18-20 May 2005 (Beijing, China) Publication Date 18 May 2005 701P0205.(doi:10.13031/2013.18400)
Authors: J. Gan, W. Z. Jiang, Y. Kitamura, B. Li and A. Zhen
Keywords: Inhibition of unionized volatile acid, surface based hydrolysis constant, VA spectrum, particle size distribution, volatile solid degradation ratio
Acidogenesis affect on not only methanogenic but also acidogenic and hydrolysis phases in the overall anaerobic process of solid-state organic waste. A batch experiment was conducted to evaluate the influence of unionized volatile acid (UVA) on acidogenesis and hydrolysis of high-solids organic waste. The temperature regime was mesophilic with a 20 day solid retention time. The reactor set-up was a rotational drum fermentation system (RDFS) consisting of 4 fermentors and using soybean meal as a substrate. Results showed that UVA inhibited strongly on the VA increasing ratios, spectra, VS degradation ratios, and the surface based hydrolysis constant with increasing initially added UVA concentration (0, 10, 20, 30 g/L). Results suggested that VA, particularly UVA, strongly inhibited hydrolysis and acidogenesis during anaerobic solid-state substrate degradation.(Download PDF) (Export to EndNotes)