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Simulation Model for Composting Cellulosic (Bagasse) Substrates
| Content Provider | Scilit |
|---|---|
| Author | Mohee, R. White, R. K. Das, K. C. |
| Copyright Year | 1998 |
| Description | A dynamic model of aerobic composting with solid substrates was developed as a first step to predict the rate of decomposition of cellulosic materials. The model was based on heat and mass transfer principles and reaction kinetics of biological processes. The relations describing the rates of reaction and the degradability potential of the substrates were determined based on laboratory-scale experiments. The model was developed using a graphical software package, Stella II® (which was able to solve feedback loops encountered in actual composting processes. The model was validated with temperature, oxygen distribution and mass degradation accompanying the composting of bagasse. Experimental setups consisted of 30 gallon drum reactors, continuously aerated. Temperature and oxygen in exhaust gases were monitored on an hourly basis and measurements of moisture content, pH and volatile solids were done on a weekly basis. The data fit with the model was excellent for mass degraded and temperatures for the first 10 days. From day 10 to 14, the deviations between model predictions (as solved with Stella II®) and actual measurements did not exceed 2.6 percent. The concentrations of oxygen in outlet gases showed fair agreement between predicted and experimental values. Simulating the model with varying airflow rates showed that the maximum mass breakdown rates occurred for airflow rates of 0.12 kg dry air/(kg dry compost.hr) while maintaining the temperatures below 50°C, through a temperature feedback control strategy. |
| Related Links | http://infohouse.p2ric.org/ref/31/30802.pdf |
| Ending Page | 92 |
| Page Count | 11 |
| Starting Page | 82 |
| ISSN | 1065657X |
| e-ISSN | 23262397 |
| DOI | 10.1080/1065657x.1998.10701923 |
| Journal | Compost Science & Utilization |
| Issue Number | 2 |
| Volume Number | 6 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 1998-03-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Compost Science & Utilization Paper and Wood Composting Cellulosic Bagasse Substrates Simulation Model for Composting |
| Content Type | Text |
| Resource Type | Article |
| Subject | Soil Science Ecology Waste Management and Disposal |
