Analysis of Ammonia Inhibition on Anaerobic Digestion Via Food Wastes

doi:10.3969/j.issn.1673-1689.2014.03.009

Home > Archive>Volume 33, Issue 3, 2014 >282-287. DOI:10.3969/j.issn.1673-1689.2014.03.009

Analysis of Ammonia Inhibition on Anaerobic Digestion Via Food Wastes
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                        10.3969/j.issn.1673-1689.2014.03.009
                    
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The effect of ammonia concentration on anaerobic digestion via food wastes was indicated in this study. The results suggested that the ammonia inhibition was affected on the two biogas production peaks during the food waste digestion process. The two maximum biogas production rates under maximum ammonia concentration were 44.8% and 45% of the control and the timepoints of which,compared with the control,were delayed 6 hours and 42 hours,respectively. The IC50ammonia inhibition of food waste digestion was 7 860 mg/L,which was speculated from the fact that the increase of ammonia concentration in the reaction system led to the lowering of total organic carbon removal. The increase of ammonia concentration lead to the excessive accumulation of volatile fatty acids,and the utilization rates of VFAs were also appropriate slow down.

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XU Zhi-yang, ZHAO Ming-xing, MIAO heng-feng, REN Hong-yan, HUANG Zhen-xing, WANG Tao, GAO Shu-mei, RUAN Wen-quan. Analysis of Ammonia Inhibition on Anaerobic Digestion Via Food Wastes[J]. Journal of Food Science and Biotechnology,2014,33(3):282-287.

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Online: June 16,2014
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