Optimization of energy production from biogas fuel in a closed landfill using artificial neural networks: A case study of Al Ghabawi Landfill, Jordan
•LFG varies in species content and concertation based on the original waste material.•Optimizing the LFG combustion is required to maximize the landfill power output.•Real data from Al Ghabawi landfill was used as a model input.•A combustion model and ANN was used to optimize the landfill’s operatin...
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| Published in: | Waste management (Elmsford) Vol. 150; pp. 218 - 226 |
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| Main Authors: | , , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier Ltd
01-08-2022
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | •LFG varies in species content and concertation based on the original waste material.•Optimizing the LFG combustion is required to maximize the landfill power output.•Real data from Al Ghabawi landfill was used as a model input.•A combustion model and ANN was used to optimize the landfill’s operating parameters.•The intake pressure and the ignition timing were significant in the optimization.•Landfill’s power output can be increased by around 1 MW for each genset.
Landfills have high potency as renewable energy sources by producing biogas from organic waste degradation. Landfills biogas (LFG) can be used for power plant purposes instead of allowing it to flare to the atmosphere which contributes to the global warming. The aim of this work was to introduce and examine an optimization model for maximizing the power generation of Al Ghabawi landfill in Amman city, Jordan. The optimization process focused on studying the effect of several operating parameters within the landfill power plant. To achieve this goal, a combustion model had been built and validated against a set of historical real data obtained from the landfill operator. In addition to that, an Artificial Neural Network (ANN) model had been built to perform a multi-objective optimization to obtain the optimal power generation conditions for Al Ghabawi landfill. The combustion model along with the ANN model aim to estimate the best engine operating conditions based on the actual daily data of the landfill. The engine operating parameters includes the intake pressure and temperature, the ignition time and the equivalence ratio. The results of the study indicate that the current operating parameters can be optimized to maximize the gensets power generation. Based on the daily data of the produced LFG, the optimal operating conditions for the landfill are 2.32 bar for the intake pressure, 303 K for the intake temperature, 0.9–1.0 for the equiveillance ratio and for the ignition time it is 13 degrees before the top dead center (BTDC). These optimized operating parameters can maximize the landfill power generation by at least 1 MW for each genset. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0956-053X 1879-2456 |
| DOI: | 10.1016/j.wasman.2022.07.011 |