Biomethane Potential of Sludges from a Brackish Water Fish Hatchery
Abstract
:Featured Application
Abstract
1. Introduction
2. Material and Methods
2.1. Substrate and Inoculum
2.2. Analytical Methods
2.3. Biochemical Methane Potential Tests
2.4. Kinetic Models
- Y(t) is the estimated cumulative methane yield at time t (mL CH4/g VS)
- Y0 is the calculated BMP of the substrate (mL CH4/g VS)
- k is the hydrolysis rate constant (1/day)
- t is the time (day)
- Rmax is the maximum methane production rate (mL CH4/g VS day)
- λ is the lag phase duration (day)
3. Results and Discussions
3.1. Chemical Composition of Fish Sludges
3.2. Methane Production
3.3. Biochemical Methane Potential (BMP)
3.4. Kinetic Analysis
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Parameter | Units | Fish Sludge (Substrate) | Inoculum |
---|---|---|---|
Total solids (TS) | g/L | 14.29 ± 0.3 | 64.27 ± 0.8 |
Volatile solids (VS) | g/L | 4.70 ± 0.1 | 47.82 ± 0.6 |
Volatile solids (VS) | % TS | 32.9 ± 1.5 | 74.4 ± 0.9 |
Total COD (tCOD) | mg/L | 4045 ± 405 | n.d. |
Soluble COD (sCOD) | mg/L | 3680 ± 220 | 8000 ± 75 |
Total Nitrogen (TN) | g/L | 0.2 ± 0.07 | 4.53 ± 0.6 |
Ammoniacal Nitrogen (TAN) | g/L | 0.011 ± 0.002 | 2.95 ± 0.5 |
Volatile fatty acids (VFA) | mg/L | 596.5 ± 64.3 | 3115 ± 16.5 |
Total alkalinity (TAC) | mg/L | 815.0 ± 0.1 | 17,058 ± 183 |
VFA/TAC | - | 0.732 | 0.183 |
Salinity | g/L | 12 | - |
Redox potential | mV | −60 ± 8 | −328 ± 9 |
pH | - | 5.9 ± 0.2 | 7.9 ± 0.0 |
I/S Ratio | K (1/Day) | λ (Day) | Rmax (NmL/g VS Day) |
---|---|---|---|
50 (IS50) | 0.15 | 14.0 | 63.1 |
30 (IS30) | 0.13 | 13.5 | 40.3 |
3 (IS03) | 0.11 | 5.5 | 16.0 |
0 (S100) | 0.11 | 7.6 | 15.4 |
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da Borso, F.; Chiumenti, A.; Fait, G.; Mainardis, M.; Goi, D. Biomethane Potential of Sludges from a Brackish Water Fish Hatchery. Appl. Sci. 2021, 11, 552. https://doi.org/10.3390/app11020552
da Borso F, Chiumenti A, Fait G, Mainardis M, Goi D. Biomethane Potential of Sludges from a Brackish Water Fish Hatchery. Applied Sciences. 2021; 11(2):552. https://doi.org/10.3390/app11020552
Chicago/Turabian Styleda Borso, Francesco, Alessandro Chiumenti, Giulio Fait, Matia Mainardis, and Daniele Goi. 2021. "Biomethane Potential of Sludges from a Brackish Water Fish Hatchery" Applied Sciences 11, no. 2: 552. https://doi.org/10.3390/app11020552