Dissolved oxygen effect on the biodegradability of biowaste
Composting is one of the most used technologies for the use of municipal biowaste - MBW. Being an aerobic process, the efficiency of aeration can affect the development of the process and product quality. In this study, we evaluated at laboratory scale, the influence of the concentration of dissolved oxygen- OD on aerobic biodegradability of BOM of a municipality, where segregation practices are performed at the source and selective collection; for this five concentrations of OD (<0.5; 1.0; 1.5; 2.0; 2.5mg L-1) was studied by differential first-order kinetic model to determine rates Substrate Utilization-TUS, biomass growth rates-TCB and through respirometry the rate of oxygen consumption-TCO. Statistics from a mixed linear model analysis and Tukey test (p <0.05) were performed, finding that concentrations of OD assessed, fall into three groups in terms of COD reduction: i) less than 0.5mg OD * L-1); ii) 1.0 ≤OD≤ 1.5mg L-1 and iii) 2.0 ≤OD≤ 2.5mg L-1, the latter in which the most favorable conditions for the transformation kinetics are presented substrate with TUS between 0,18 to 0,21 d-1, in which they have the greatest TCO and TCB. In contrast, groups i and ii presented TUS between 0.02 and 0.12d-1, indicating that the OD affects the transformation of the substrate.
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Universidad de Ciencias Aplicadas y Ambientales U.D.C.A
2015
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Soto, Jonathan Torres, Patricia Barba, Luz Edith Fernando Marmolejo, Luis Torres, Wilmar A. Guzmán, María A. Perea, Laura M. |
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Soto, Jonathan Torres, Patricia Barba, Luz Edith Fernando Marmolejo, Luis Torres, Wilmar A. Guzmán, María A. Perea, Laura M. Dissolved oxygen effect on the biodegradability of biowaste |
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Soto, Jonathan Torres, Patricia Barba, Luz Edith Fernando Marmolejo, Luis Torres, Wilmar A. Guzmán, María A. Perea, Laura M. |
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Soto, Jonathan |
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Dissolved oxygen effect on the biodegradability of biowaste |
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Dissolved oxygen effect on the biodegradability of biowaste |
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Dissolved oxygen effect on the biodegradability of biowaste |
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Dissolved oxygen effect on the biodegradability of biowaste |
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Dissolved oxygen effect on the biodegradability of biowaste |
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dissolved oxygen effect on the biodegradability of biowaste |
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Composting is one of the most used technologies for the use of municipal biowaste - MBW. Being an aerobic process, the efficiency of aeration can affect the development of the process and product quality. In this study, we evaluated at laboratory scale, the influence of the concentration of dissolved oxygen- OD on aerobic biodegradability of BOM of a municipality, where segregation practices are performed at the source and selective collection; for this five concentrations of OD (<0.5; 1.0; 1.5; 2.0; 2.5mg L-1) was studied by differential first-order kinetic model to determine rates Substrate Utilization-TUS, biomass growth rates-TCB and through respirometry the rate of oxygen consumption-TCO. Statistics from a mixed linear model analysis and Tukey test (p <0.05) were performed, finding that concentrations of OD assessed, fall into three groups in terms of COD reduction: i) less than 0.5mg OD * L-1); ii) 1.0 ≤OD≤ 1.5mg L-1 and iii) 2.0 ≤OD≤ 2.5mg L-1, the latter in which the most favorable conditions for the transformation kinetics are presented substrate with TUS between 0,18 to 0,21 d-1, in which they have the greatest TCO and TCB. In contrast, groups i and ii presented TUS between 0.02 and 0.12d-1, indicating that the OD affects the transformation of the substrate. |
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Universidad de Ciencias Aplicadas y Ambientales U.D.C.A |
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2015 |
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AT sotojonathan dissolvedoxygeneffectonthebiodegradabilityofbiowaste AT torrespatricia dissolvedoxygeneffectonthebiodegradabilityofbiowaste AT barbaluzedith dissolvedoxygeneffectonthebiodegradabilityofbiowaste AT fernandomarmolejoluis dissolvedoxygeneffectonthebiodegradabilityofbiowaste AT torreswilmara dissolvedoxygeneffectonthebiodegradabilityofbiowaste AT guzmanmariaa dissolvedoxygeneffectonthebiodegradabilityofbiowaste AT perealauram dissolvedoxygeneffectonthebiodegradabilityofbiowaste AT sotojonathan efectodeloxigenodisueltosobrelabiodegradabilidaddebiorresiduos AT torrespatricia efectodeloxigenodisueltosobrelabiodegradabilidaddebiorresiduos AT barbaluzedith efectodeloxigenodisueltosobrelabiodegradabilidaddebiorresiduos AT fernandomarmolejoluis efectodeloxigenodisueltosobrelabiodegradabilidaddebiorresiduos AT torreswilmara efectodeloxigenodisueltosobrelabiodegradabilidaddebiorresiduos AT guzmanmariaa efectodeloxigenodisueltosobrelabiodegradabilidaddebiorresiduos AT perealauram efectodeloxigenodisueltosobrelabiodegradabilidaddebiorresiduos |
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rev-ruadc-co-article-1792021-07-13T07:52:53Z Dissolved oxygen effect on the biodegradability of biowaste Efecto del oxígeno disuelto sobre la biodegradabilidad de biorresiduos Soto, Jonathan Torres, Patricia Barba, Luz Edith Fernando Marmolejo, Luis Torres, Wilmar A. Guzmán, María A. Perea, Laura M. Aprovechamiento cinética compostaje residuos sólidos Use cynetics composting solid waste Composting is one of the most used technologies for the use of municipal biowaste - MBW. Being an aerobic process, the efficiency of aeration can affect the development of the process and product quality. In this study, we evaluated at laboratory scale, the influence of the concentration of dissolved oxygen- OD on aerobic biodegradability of BOM of a municipality, where segregation practices are performed at the source and selective collection; for this five concentrations of OD (<0.5; 1.0; 1.5; 2.0; 2.5mg L-1) was studied by differential first-order kinetic model to determine rates Substrate Utilization-TUS, biomass growth rates-TCB and through respirometry the rate of oxygen consumption-TCO. Statistics from a mixed linear model analysis and Tukey test (p <0.05) were performed, finding that concentrations of OD assessed, fall into three groups in terms of COD reduction: i) less than 0.5mg OD * L-1); ii) 1.0 ≤OD≤ 1.5mg L-1 and iii) 2.0 ≤OD≤ 2.5mg L-1, the latter in which the most favorable conditions for the transformation kinetics are presented substrate with TUS between 0,18 to 0,21 d-1, in which they have the greatest TCO and TCB. In contrast, groups i and ii presented TUS between 0.02 and 0.12d-1, indicating that the OD affects the transformation of the substrate. El compostaje es una de las tecnologías más utilizadas para el aprovechamiento de los biorresiduos de origen municipal, en los países en desarrollo. Siendo un proceso aerobio, la eficiencia de la aireación puede afectar el desarrollo del proceso y la calidad del producto. En este estudio, se evaluó, a escala de laboratorio, la influencia de la concentración del oxígeno disuelto sobre la biodegradabilidad aerobia de los biorresiduos del restaurante de la Universidad del Valle, Colombia. Para ello, se estudiaron cinco concentraciones de oxígeno disuelto (menor a 0,5; 1,0; 1,5; 2,0 y 2,5mg L-1), a través de un modelo cinético diferencial de primer orden, para determinar las tasas de utilización del sustrato, tasas de crecimiento de biomasa y por medio de respirometría, la tasa de consumo de oxígeno. Se realizaron análisis estadísticos, a partir de un modelo lineal mixto y la prueba de Tukey (p<0,05), encontrándose que las concentraciones de OD evaluadas, se pueden agrupar en tres grupos, en términos reducción de DQO: i) OD menor a 0,5mg L-1; ii) 1,0 ≤OD≤ 1,5mg L-1 y iii) 2,0 ≤OD≤ 2,5mg L-1, siendo este último, en el que se presentan las condiciones más favorables para la cinética de transformación del sustrato con TUS, entre 0,18 a 0,21d-1, en las cuales, se tienen las mayores TCO y TCB. En contraste, los grupos i y ii presentaron TUS, entre 0,02 a 0,12d-1, lo que indica que el OD incide en la transformación del sustrato. Universidad de Ciencias Aplicadas y Ambientales U.D.C.A 2015-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.udca.edu.co/index.php/ruadc/article/view/179 10.31910/rudca.v18.n2.2015.179 Revista U.D.C.A Actualidad & Divulgación Científica; Vol. 18 No. 2 (2015): Revista U.D.C.A Actualidad & Divulgación Científica. Julio-Diciembre; 485-495 Revista U.D.C.A Actualidad & Divulgación Científica; Vol. 18 Núm. 2 (2015): Revista U.D.C.A Actualidad & Divulgación Científica. Julio-Diciembre; 485-495 Revista U.D.C.A Actualidad & Divulgación Científica; v. 18 n. 2 (2015): Revista U.D.C.A Actualidad & Divulgación Científica. Julio-Diciembre; 485-495 2619-2551 0123-4226 10.31910/rudca.v18.n2.2015 spa https://revistas.udca.edu.co/index.php/ruadc/article/view/179/137 https://revistas.udca.edu.co/index.php/ruadc/article/view/179/1291 /*ref*/ABDULKARIM, B.; ABDULLAHI, M. 2010. 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