BATCH CO-DIGESTION OF MANURE, SOLID SLAUGHTERHOUSE WASTE, AND FRUIT & VEGETABLE WASTE
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| Format: | Artículo científico |
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Universidad Mayor de San Andrés
2006
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| author | René Alvarez |
| author_facet | René Alvarez |
| contents | BATCH CO-DIGESTION OF MANURE, SOLID SLAUGHTERHOUSE WASTE, AND FRUIT & VEGETABLE WASTE René Alvarez Victor Hugo Riera Gunnar Lidén Química Anaerobic co-digestion of different waste materials from the city of La Paz, Bolivia, was studied. The waste materials used were of three principal kinds; a) solid slaughterhouse wastes (blood, rumen, stomach and intestinal content), b) cow and swine manure, and c) fruit and vegetable wastes from a local market. An augmented simplex-centroid design for three components was used to evaluate the effects of mixing the different kinds of substrates. Anaerobic batch experiments were made in 2 l reactors at a temperature of 35oC. A positive synergistic effect was found for the binary mixture between manure and slaughterhouse waste. The highest methane yield based on added volatile solids (VS) was 0.29 m3 CH4 kg-1 VS, and the obtained reduction of VS was 76 %. The positive mixture effect is most likely due to the balancing of nutrients and possibly also dilution of inhibitory material present in the different substrates. In contrast, a strongly negative mixture effect of adding fruit and vegetable waste (FVW) was observed. The methane yield was decreased by 90% when 17% of the mixture consisted of FVW, and by 98% when 33% of the mixture consisted of FVW, in comparison to mixtures without FVW. The low methane yield from the FVW containing mixtures is probably an effect of the sensitivity of the methanogenic bacteria to changes in pH caused by the accumulation of volatile fatty acids. 2006 artículo científico 0250-5460 https://www.redalyc.org/articulo.oa?id=426339668015 en http://www.redalyc.org/revista.oa?id=4263 Revista Boliviana de Química application/pdf Universidad Mayor de San Andrés Revista Boliviana de Química (Estado Plurinacional de Bolivia) Num.1 Vol.23 |
| format | Artículo científico |
| id | redalyc_426339668015 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Universidad Mayor de San Andrés |
| spellingShingle | BATCH CO-DIGESTION OF MANURE, SOLID SLAUGHTERHOUSE WASTE, AND FRUIT & VEGETABLE WASTE René Alvarez Química BATCH CO-DIGESTION OF MANURE, SOLID SLAUGHTERHOUSE WASTE, AND FRUIT & VEGETABLE WASTE René Alvarez Victor Hugo Riera Gunnar Lidén Química Anaerobic co-digestion of different waste materials from the city of La Paz, Bolivia, was studied. The waste materials used were of three principal kinds; a) solid slaughterhouse wastes (blood, rumen, stomach and intestinal content), b) cow and swine manure, and c) fruit and vegetable wastes from a local market. An augmented simplex-centroid design for three components was used to evaluate the effects of mixing the different kinds of substrates. Anaerobic batch experiments were made in 2 l reactors at a temperature of 35oC. A positive synergistic effect was found for the binary mixture between manure and slaughterhouse waste. The highest methane yield based on added volatile solids (VS) was 0.29 m3 CH4 kg-1 VS, and the obtained reduction of VS was 76 %. The positive mixture effect is most likely due to the balancing of nutrients and possibly also dilution of inhibitory material present in the different substrates. In contrast, a strongly negative mixture effect of adding fruit and vegetable waste (FVW) was observed. The methane yield was decreased by 90% when 17% of the mixture consisted of FVW, and by 98% when 33% of the mixture consisted of FVW, in comparison to mixtures without FVW. The low methane yield from the FVW containing mixtures is probably an effect of the sensitivity of the methanogenic bacteria to changes in pH caused by the accumulation of volatile fatty acids. 2006 artículo científico 0250-5460 https://www.redalyc.org/articulo.oa?id=426339668015 en http://www.redalyc.org/revista.oa?id=4263 Revista Boliviana de Química application/pdf Universidad Mayor de San Andrés Revista Boliviana de Química (Estado Plurinacional de Bolivia) Num.1 Vol.23 |
| title | BATCH CO-DIGESTION OF MANURE, SOLID SLAUGHTERHOUSE WASTE, AND FRUIT & VEGETABLE WASTE |
| topic | Química |
| url | https://www.redalyc.org/articulo.oa?id=426339668015 |