Optimizing composting parameters for nitrogen conservation in composting

Bueno, P.; Tapias, R.; López, Fátima; Díaz, María José Moreno

doi:10.1016/j.biortech.2007.08.087

Cited by 96 publications

(37 citation statements)

References 29 publications

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“…Several practices such as optimization of initial C/N ratio (Jiang et al, 2011), process temperature (Pagans et al, 2006;Eklind et al, 2007), pH (Nakasaki et al, 1993), aeration (DeGuardia et al, 2008) and moisture regime (Bueno et al, 2008;Jiang et al, 2011) have been found to influence the degree of NH 3 volatilization from compost. However, optimization of these parameters under the practical composting conditions is not always an easy task and moreover, does not always appear to be effective.…”

Section: Introductionmentioning

confidence: 98%

Reducing ammonia volatilization during composting of organic waste through addition of hydrothermally treated lignocellulose

Nakhshiniev¹,

Perera²,

Biddinika³

et al. 2014

International Biodeterioration & Biodegradation

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Section: Introductionmentioning

confidence: 98%

Reducing ammonia volatilization during composting of organic waste through addition of hydrothermally treated lignocellulose

Nakhshiniev¹,

Perera²,

Biddinika³

et al. 2014

International Biodeterioration & Biodegradation

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“…To maximize the statistical strength of experimental data while minimizing the number of experimental trials needed, a central composite factor design was used to test key levels of the physical parameters. Amongst the large number of papers dealing with composting, only a limited number in recent years are based on an experimental design that enhances the reliability of results (Liang et al, 2003;Gea et al, 2007;Zambrano et al, 2007;Bueno et al, 2008a;2008b).…”

Section: Introductionmentioning

confidence: 99%

Microbial oxygen uptake in sludge as influenced by compost physical parameters

Mohajer¹,

Trémier

Barrington³

et al. 2009

Waste Management

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1The wide range of optimal values reported for the physical parameters of compost 2 mixtures suggest that their interactive relationships should be investigated. The objective of this 3 study was to examine the microbial O 2 uptake rate (OUR) in 16 sludge waste recipes, offering a 4 range of moisture content (MC), waste/bulking agent (W/BA) ratio and BA particle size levels 5 determined using a central composite experimental design. The 3 kg samples were maintained at 6 a constant temperature and aeration rate for 28 days, during which a respirometer recorded O 2 7 uptake to provide a measure of microbial activity and biodegradability. The cumulative O 2 8 consumption after 14 and 28 days was found to be significantly influenced by MC, W/BA ratio, 9BA particle size and the interaction between MC and W/BA ratio (p < 0.05). Using multivariate 10 regression analysis, the experimental data was used to generate a model with good predictive 11 ability for cumulative O 2 consumption after 28 days as a function of the significant physical 12 variables (R 2 = 0.84). The prediction of O 2 uptake by the model depended highly on the 13 interaction between MC and W/BA ratio. A MC outside of the traditional 50-60 % (wet basis) 14 range still resulted in a high level of microbial O 2 uptake as long as the W/BA ratio was adjusted 15 to maintain a good O 2 exchange in the sample. The evolution of OUR in the samples was also 16 investigated, uncovering strong associations between short and long-term respirometric indices, 17 such as peak OUR and cumulative O 2 consumption (p < 0.005). Combining peak OUR data with 18 cumulative O 2 consumption after 14 days allowed for accurate predictions of cumulative O 2 after 19 28 days of aeration (R 2 = 0.96), implying that future studies need only run trials up to 14 days to 20 evaluate the overall O 2 consumption or biodegradability of a sludge mixture. 21

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“…Sin embargo, pocos estudios han considerado la optimización numérica con la finalidad de definir las condiciones más adecuadas para el proceso en términos de humedad, aireación y disponibilidad de nutrientes, y no siempre se realizan respecto a los biorresiduos sino a otros residuos como los lignoceluliticos [66]. Los estudios relacionados con los biorresiduos se enfocan principalmente en la minimización de COV's y pocos se han centrado en maximizar las tasas de biodegradación [4,66]. Esto muestra un campo promisorio de investigación, que incluyen el uso de algoritmos genéticos o redes neuronales como una manera de reproducir datos a partir de ensayos experimentales y utilizar funciones objetivo que permitan definir las condiciones óptimas del proceso.…”

Section: Análisis De Las Tendencias De Investigación Más Estudiadas Eunclassified

Compostaje de biorresiduos: Tendencias de investigación y pertinencia en países en desarrollo

Soto-Paz¹,

Oviedo-Ocaña

Torres–Lozada³

et al. 2017

DYNA

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Biowaste is the main fraction of MSW in developing countries. Composting is a promising alternative for the management of biowaste in these contexts. However, its implementation has not been effective in developing countries, for which it is necessary to explore options to improve its application in this context. This article reviewed the research trends on biowaste composting and the potential application in developing countries such as Colombia. For this purpose, the technology monitoring methodology was used in databases of specialized scientific journals (period 2006 to 2017), using bibliometric tools such as RefViz® and Tlab®. The research has focused on optimizing the process through measures such as the use of amendment or support materials, strategies for reducing nitrogen losses, aerobic biodegradability studies and the development of empirical models to predict process conditions. The integration of this research in the context of developing countries can contribute to improve the application of biowaste composting.Keywords: Resource recovery; biowastes; composting; product quality; modeling. Compostaje de biorresiduos: Tendencias de investigación y pertinencia en países en desarrolloResumen Los biorresiduos son la mayor fracción de los Residuos Sólidos Municipales-RSM en países en desarrollo, siendo el compostaje una alternativa promisoria para su gestión. La implementación del compostaje en este contexto no ha sido efectiva requiriéndose estrategias para mejorar su aplicación. Este artículo analiza tendencias investigativas del compostaje de biorresiduos y presenta una reflexión crítica al respecto. Para tal efecto, emplea elementos de vigilancia tecnológica, analizando revistas científicas especializadas (periodo 2006 a 2017) y usando herramientas bibliométricas como RefViz® y Tlab®. Las investigaciones para optimizar el proceso se han enfocado en el uso de materiales de enmienda o de soporte, estrategias para la reducción en las pérdidas de nitrógeno, desarrollo de estudios de biodegradabilidad aerobia y de modelos empíricos para predecir condiciones del proceso. La integración de estas investigaciones en el contexto de países en desarrollo puede contribuir al mejoramiento de la aplicación del compostaje de biorresiduos.Palabras clave: Aprovechamiento; biorresiduos; compostaje; calidad del producto; modelado.

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Optimizing composting parameters for nitrogen conservation in composting

Cited by 96 publications

References 29 publications

Reducing ammonia volatilization during composting of organic waste through addition of hydrothermally treated lignocellulose

Reducing ammonia volatilization during composting of organic waste through addition of hydrothermally treated lignocellulose

Microbial oxygen uptake in sludge as influenced by compost physical parameters

Compostaje de biorresiduos: Tendencias de investigación y pertinencia en países en desarrollo

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