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Anaerobic Co-Digestion of Fish Processing Waste with Cow Manure and Waste of Market (Rests of Fruits and Vegetables): A Lab Scale Batch Test

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Journal of Sustainable Bioenergy Systems 2021年第1期11卷 45-59页

作者： Ndèye Ndickou Kébé Christiane Rieker Papa Abdoulaye Fall Djicknoum Diouf Diène Ndiaye thomas mockenhaupt Patrick Beuel Jamile Bursche Laboratory of Electronics Computer Science Telecommunications and Renewable Energy Gaston Berger University Saint-Louis Senegal CIRE (Cologne Institute for Renewable Energy) Bioenergy University of Apllied Sciences of Cologne TH K&#246 ln Cologne Germany Dakar Senegal

The aim of this work was to use fish processing waste (FW) as main substrate for anaerobic digestion. To enhance the biogas production of FW, co-digestion was done with two other substrates: cow dung (CD) and waste of market (MW). Batch test was carried out in an 1 L glass digester in a temperature controlled chamber at 38°C. The following mixtures were carried out: FW with CD respectively at different ratios 100:0% (A), 80:20% (B) and 60:40% (C);FW with MW at the following ratio 80:20% (D);FW with CD and MW respectively at these ratios 80:10:10% (F) and 60:20:20% (G). The biogas produced was measured using a milligas counter® and the volume of gas was recorded. The gas composition was determined using gas chromatography. With a pH stable for raw substrates and mixtures, TS and VS (%TS) contents for FW were respectively 31.01% and 91.55%. Between 3 to 13 days of experimentation, the highest flow rate was observed. The percentage of methane was more important for mixtures B and D, 61% and 59% respectively. pH and VOA/TIC were stable at the end of the batch test for all mixtures, meaning that the organic matter was already well digested. The highest values of Volatile Solid Removal (VSR) were found for mixtures C, D, F and G. Therefore, the promising mixtures for next experimentations in large scale are B and D.

关键词： Fish Waste Batch Test Co-Digestion Flow Rate Organic Matter

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