Addition of granular activated carbon and trace elements to favor volatile fatty acid consumption during anaerobic digestion of food waste

被引:156
作者
Capson-Tojo, Gabriel [1 ,2 ]
Moscoviz, Roman [1 ]
Ruiz, Diane [1 ]
Santa-Catalina, Gaelle [1 ]
Trably, Eric [1 ]
Rouez, Maxime [2 ]
Crest, Marion [2 ]
Steyer, Jean-Philippe [1 ]
Bernet, Nicolas [1 ]
Delgenes, Jean-Philippe [1 ]
Escudie, Renaud [1 ]
机构
[1] Univ Montpellier, INRA, LBE, 102 Ave Etangs, F-11100 Narbonne, France
[2] Suez, CIRSEE, 38 Rue President Wilson, F-78230 Le Pecq, France
关键词
Biomethane; DIET; Biomass acclimation; Ammonia; Environmental biorefinery; INTERSPECIES ELECTRON-TRANSFER; SP NOV; METHANE FERMENTATION; CO-DIGESTION; LIFE-CYCLE; REQUIREMENTS; PERFORMANCE; PROPIONATE; CARDBOARD; IRON;
D O I
10.1016/j.biortech.2018.03.097
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The effect of supplementing granular activated carbon and trace elements on the anaerobic digestion performance of consecutive batch reactors treating food waste was investigated. The results from the first batch suggest that addition of activated carbon favored biomass acclimation, improving acetic acid consumption and enhancing methane production. Adding trace elements allowed a faster consumption of propionic acid. A second batch proved that a synergy existed when activated carbon and trace elements were supplemented simultaneously. The degradation kinetics of propionate oxidation were particularly improved, reducing significantly the batch duration and improving the average methane productivities. Addition of activated carbon favored the growth of archaea and syntrophic bacteria, suggesting that interactions between these microorganisms were enhanced. Interestingly, microbial analyses showed that hydrogenotrophic methanogens were predominant. This study shows for the first time that addition of granular activated carbon and trace elements may be a feasible solution to stabilize food waste anaerobic digestion.
引用
收藏
页码:157 / 168
页数:12
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