What are the difficulties with anaerobic digestion from aquaculture waste?
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Anaerobic digestion (AD) of aquaculture waste faces challenges due to the high protein and lipid content in fish waste, hindering mono-digestion processes . Additionally, the solid concentration of fish sludge significantly impacts biogas quality, with higher concentrations enhancing methane production but requiring downstream H2S removal processes . Furthermore, the treatment of thickened wastewater from fish hatcheries through AD requires optimization, with pilot-scale tests showing faster and more productive start-up in up-flow anaerobic floating filter (UAFF) reactors compared to conventional reactors . Moreover, the biochemical methane potential (BMP) of brackish fish hatchery sludges varies based on the inoculum/substrate volatile solids ratios, with higher ratios yielding higher BMP but potentially requiring longer lag-phase durations, necessitating further investigation for continuous full-scale application .
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| Papers (5) | Insight |
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6 Citations | Anaerobic digestion of aquaculture waste faces challenges such as long lag-phase durations and the need for further investigation on biomass adaptation to salinity and retention times for full-scale application. |
Open access•Journal Article 16 Citations | Anaerobic digestion of aquaculture waste faces challenges due to high protein and lipid content, leading to ammonia and VFAs production, inhibiting methane formation and causing process instability. |
2 Citations | Anaerobic digestion of fish waste faces challenges due to its high protein and lipid content, affecting methane production rates and yields, especially at varying substrate-to-inoculum ratios and temperatures. |
| Anaerobic digestion of aquaculture waste faces challenges related to varying solid concentrations impacting methane production and the need for downstream processes to remove hydrogen sulfide from biogas. | |
01 Jan 2022 | Anaerobic digestion of aquaculture waste faces challenges such as slow start-up in conventional reactors compared to upflow anaerobic floating filters (UAFF), which exhibit faster and more productive methane yields. |
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