Different Indices to Express Biodegradability in Organic Solid Wastes

Ponsá, Sergio; Gea, Teresa; Sánchez, Antoni

doi:10.2134/jeq2009.0294

Cited by 113 publications

(106 citation statements)

References 21 publications

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“…Both are internationally used and extensively reported in scientific recent literature. [23][24][25][26][27][28][29]33 We have proposed and demonstrated that the reduction of the biodegradable organic matter content of the treated materials (measured as the reduction in the Respiration Index) is an effective and meaningful functional unit for this purpose. This functional unit has been used to analyze different biological biowaste treatment facilities using different technologies, including anaerobic digestion and composting.…”

Section: P R E -P R I N Tmentioning

confidence: 99%

“…This measure is related to the biodegradable organic matter present in the sample and it is widely used in scientific literature. In this study, DRI was determined following the methodology proposed by Adani et al 26 Details of the respirometer can be found in Ponsá et al 27 Briefly, it consists of three Erlenmeyer glass flask reactors, a thermostatic bath at 37°C, a control cabinet, an oxygen sensor, an air supply system based on mass flow-meters and a personal computer unit. Tests were performed by setting airflow constant and sufficient to preserve the oxygen concentration in the outlet airflow above 10% v/v.…”

mentioning

confidence: 99%

“…DRI is presented as an average of a triplicate measurement. As commented before, more detailed explanations about the respiration specific measurement can be found in Ponsá et al, 27 whereas a general explanation about respiration measurements can be consulted in Barrena et al 28 …”

mentioning

confidence: 99%

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Determination of the energy and environmental burdens associated with the biological treatment of source-separated Municipal Solid Wastes

Colón

Cadena

Pognani

et al. 2012

Energy Environ. Sci.

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144

104

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Section: P R E -P R I N Tmentioning

confidence: 99%

mentioning

confidence: 99%

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Determination of the energy and environmental burdens associated with the biological treatment of source-separated Municipal Solid Wastes

Colón

Cadena

Pognani

et al. 2012

Energy Environ. Sci.

Self Cite

144

104

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“…MSW contains high moisture content (60-70%) and large organic fraction (70-80%), posing adverse environmental impacts if it is not treated properly. Fortunately, the high organic fraction of MSW can be easily converted to energy sources through composting (Jolanun and Towprayoon 2010;Ponsá 2010). Therefore, composting has become an increasingly important strategy for the treatment of MSW.…”

Section: Introductionmentioning

confidence: 99%

Performance of locally available bulking agents in Newfoundland and Labrador during bench-scale municipal solid waste composting

et al. 2014

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Background: Newfoundland and Labrador (NL) has one of the highest waste disposal rates in Canada and it has 200 small communities without access to central composting facilities. During Municipal solid waste (MSW) composting, the selection of bulking agents is critical. Bench-scale composting systems plus locally available bulking agents are thus desired for economic and effective MSW management in NL communities. This study evaluated the performance of locally available bulking agents (i.e., NL sawdust and peat) during MSW composting in a bench-scale system. Physiochemical (temperature, oxygen uptake rate, pH, electrical conductivity, moisture and ash content, and C/N ratio) and biological (enzyme activities and germination index) parameters were monitored to evaluate compost maturity and stability. Results: In peat composting, higher temperature for a longer duration was observed, indicating more effective pathogen removal and sterilization. High enzyme activities of dehydrogenase, β-glucosidase, and phosphodiesterase in the third week of composting imply high microbial activity and high decomposition rate. The low C/N ratio for compost product implies acceptable stability states. In sawdust composting, higher temperature and oxygen uptake rate (OUR) were observed in the third week of composting, and higher enzyme activities in the second week. Sawdust composting generated a higher germination index, indicating higher maturity. Conclusions: Both sawdust and peat are effective bulking agents for the bench-scale composting. The choice of a bulking agent for a particular community depends on the availability of the agent and land in the region, convenience of transportation, price, and the expected quality of the compost product.

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“…For anaerobically treated wastes, volatile solids content is a widely used measurement of total organic matter. This indicator does not, however, necessarily reflect the nature of the material and its potential for biodegradability (Ponsa et al, 2010). Among other stability indicators used in the studies of composts or biological wastes, respirometric activity is the most typically used indicator of microbial activity (Barrena et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic and Aerobic Transformations Affecting Stability of Dewatered Sludge during Long‐Term Storage in a Lagoon

Lukicheva¹,

Tian²,

Cox³

et al. 2012

Water Environment Research

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The goal of this work was to study long-term behavior of anaerobically digested and dewatered sludge (biosolids) in a lagoon under anaerobic and aerobic conditions to determine the stability of the final product as an indicator of its odor potential. Field lagoons were sampled to estimate spatial and temporal variations in the physicalchemical properties and biological stability characteristics such as volatile solids content, accumulated oxygen uptake, and soluble protein content and odorous compound assessment. The analyses of collected data suggest that the surface layer of the lagoon (depth of above 0.15 m) undergoes long-term aerobic oxidation resulting in a higher degree of stabilization in the final product. The subsurface layers (depth 0.15 m below the surface and deeper) are subjected to an anaerobic environment where the conditions favor the initial rapid organic matter degradation within approximately the first year, followed by slow degradation. Water Environ. Res., 84, 17 (2012).

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Different Indices to Express Biodegradability in Organic Solid Wastes

Cited by 113 publications

References 21 publications

Determination of the energy and environmental burdens associated with the biological treatment of source-separated Municipal Solid Wastes

Determination of the energy and environmental burdens associated with the biological treatment of source-separated Municipal Solid Wastes

Performance of locally available bulking agents in Newfoundland and Labrador during bench-scale municipal solid waste composting

Anaerobic and Aerobic Transformations Affecting Stability of Dewatered Sludge during Long‐Term Storage in a Lagoon

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