Journal Article10.1080/1065657X.2005.10702253
Composting Process Optimization – Using On/Off Controls
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TL;DR: In this paper, analytical equations relating biological and physical factors and compost temperature, moisture, oxygen level and decomposition rates for aerobic composting are developed, and a multi-parameter kinetic model in conjunction with heat and mass balance equations were used to predict and optimize the performance of composting systems.
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Abstract: Despite the commercialization of a variety of different composting systems, the design and operation of composting systems to minimize the cost of producing compost remains a major goal. Evaluation of how system design and management affects the time required to stabilize compost is critical to optimizing the process. In this study, analytical equations relating biological and physical factors and compost temperature, moisture, oxygen level and decomposition rates for aerobic composting are developed. The study focused on the effects of intermittent aeration on the composting operation. A multi-parameter kinetic model in conjunction with heat and mass balance equations were used to predict and optimize the performance of composting systems. Equations evaluating airflow and on/off fan cycle times on composting temperature, oxygen and moisture were developed. Kinetic data from pilot scale experiments using three different feedstocks: municipal solid waste, biosolids/woodchips, and grass/leaves/brush were us...
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Citations
Improving the sustainability of organic waste management practices in the food-energy-water nexus: A comparative review of anaerobic digestion and composting
TL;DR: In this paper, the differences in the technical, economic, and environmental aspects of anaerobic digestion and composting, and their potential to improve the sustainability of waste management, are examined.
295
Biodrying for mechanical-biological treatment of wastes: a review of process science and engineering.
TL;DR: The process objectives, operating principles, reactor designs, parameters for process monitoring and control, and their effect on biodried output quality are critically examined and are of value to MBT process operators, regulators and end-users of SRF.
291
Current Approaches and Future Trends in Compost Quality Criteria for Agronomic, Environmental, and Human Health Benefits
TL;DR: An overview of compost quality standards in Europe, China, and the United States of America is given in this article, including a characterization of the plant residues, livestock manure, and organic wastes that can be composted.
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Biological treatment of organic materials for energy and nutrients production—Anaerobic digestion and composting
Long Lin,Fuqing Xu,Xumeng Ge,Yebo Li +3 more
- 01 Jan 2019
TL;DR: In this article, the differences in the technical, economic, and environmental aspects of anaerobic digestion and composting are examined, and a comparison of the two methods is presented.
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Effect of aeration interval on oxygen consumption and GHG emission during pig manure composting.
TL;DR: Both the total CH4 and N2O emissions as well as the total GHG emission equivalent were inversely proportional to the duration of aeration interval (R2 > 0.902), suggesting that lengthening the duration for oxygen supply and consumption to some extent could effectively reduceGHG emission.
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References
Thermal balance in composting operations
TL;DR: In this paper, thermal balance analysis of composting of sewage sludge cakes was conducted for a laboratory-scale batch operated autothermal packed bed reactor and a continuously operated commercial open-bin reactor with a scoop mixer, and necessary equations were developed.
101
Poultry Manure Composting: An Exploratory Study
TL;DR: This article found that the type of amendment, mixing method and initial dry solids content had the most significant impact on rate of poultry manure composting out of the seven controllable factors tested.
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Composting short paper fiber with broiler litter and additives II. Evaluation and optimization of decomposition rate versus mixing ratio
TL;DR: In this paper, short paper fiber was cocomposted with broiler litter (BL) to determine the mixture's kinetic parameters as functions of initial C/N ratio and mixing ratio.
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Odorous emissions and odor control in composting swine manure/sawdust mixes using continuous and intermittent aeration
TL;DR: The results indicated that airflow had a strong effect on emissions, with a linear trend vs. total airflow, with about 50% reduction in ammonia occurring for a 75% reduction of airflow as discussed by the authors.
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Preliminary study of the effect of continuous and intermittent aeration on composting hog manure amended with sawdust
TL;DR: In this article, the effects of using intermittent aeration during composting of hog manure amended with sawdust were determined during a pilot-scale 200 liter vessel (four) setup.
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