Biodrying of the Light Fraction from Anaerobic Digestion Pretreatment in Order to Increase the Total Recovery Rate
Abstract
:1. Introduction
2. Materials and Methods
2.1. LF Characteristics and Sampling
2.2. Experimental Equipment
2.3. Data Acquisition and Samples Analysis
3. Results and Discussion
3.1. Biodrying Temperature Evolution
3.2. Moisture, VS and Volume Reduction
3.3. pH and C:N Ratio
3.4. Biological Stability
3.5. Lower Heating Value
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Test Days | Airflow Rates | TS | VS | pH | C/N | |
---|---|---|---|---|---|---|
(L h−1 kg dw−1) | (% w/w) | (% w/dw) | (% w/w) | |||
Initial | 0 | - | 48.49 ± 1.98 | 90.95 ± 3.51 | 4.47 | 21.4 |
Test 1 | 0–7 | 24.9 | 51.51 | 91.95 | 6.38 | |
7–14 | 24.9 | 64.04 | 92.88 | 7.77 | ||
14–21 | 18.6 | 65.45 | 91.09 | 7.84 | ||
21–28 | 12.4 | 60.87 | 92.39 | 7.53 | ||
28–35 | 0.0 | 88.92 ± 5.75 | 89.03 ± 4.80 | 7.55 | 10.8 | |
Test 2 | 0–7 | 28.5 | 47.76 | 94.18 | 6.49 | |
7–14 | 28.5 | 43.70 | 89.44 | 8.68 | ||
14–21 | 21.4 | 82.56 | 89.39 | 7.41 | ||
21–28 | 14.2 | 75.76 | 86.63 | 8.50 | ||
28–35 | 0.0 | 79.97 ± 13.12 | 80.25 ± 5.48 | 7.51 | 15.8 |
Material Fraction | LF Initial | LF Final (Test 1) | ||||
---|---|---|---|---|---|---|
Composition | TS | Composition | % | TS | Composition | |
(% w/w) | (% w/w) | (% w/dw) | (w/w) | (% w/w) | (% w/dw) | |
Plastics | 4 | 71.36 | 6 | 7 | 76.08 | 8 |
Compostable plastic | 17 | 70.85 | 24 | 19 | 69.31 | 20 |
Compostable fraction | 51 | 42.31 | 43 | 24 | 65.93 | 24 |
Non-compostable fraction | - | - | - | 9 | 76.34 | 11 |
Textiles | 6 | 52.47 | 6 | 6 | 61.22 | 6 |
Fine fraction (<10 mm) | 22 | 48.24 | 21 | 35 | 58.03 | 31 |
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Pecorini, I.; Bacchi, D.; Iannelli, R. Biodrying of the Light Fraction from Anaerobic Digestion Pretreatment in Order to Increase the Total Recovery Rate. Processes 2020, 8, 276. https://doi.org/10.3390/pr8030276
Pecorini I, Bacchi D, Iannelli R. Biodrying of the Light Fraction from Anaerobic Digestion Pretreatment in Order to Increase the Total Recovery Rate. Processes. 2020; 8(3):276. https://doi.org/10.3390/pr8030276
Chicago/Turabian StylePecorini, Isabella, Donata Bacchi, and Renato Iannelli. 2020. "Biodrying of the Light Fraction from Anaerobic Digestion Pretreatment in Order to Increase the Total Recovery Rate" Processes 8, no. 3: 276. https://doi.org/10.3390/pr8030276