1. Utilization and integration of microalgae consortium in treating undiluted anaerobic digestate animal effluent to produce animal feed, bio-oil, and biogas.
- Author
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Sasongko NA, Ayre J, Noguchi R, Moheimani NR, Bahri PA, Anda M, Nakajima M, Soekotjo ESA, Pertiwi GA, Handayani T, and Steven S
- Subjects
- Animals, Anaerobiosis, Chlorella metabolism, Scenedesmus metabolism, Biomass, Waste Disposal, Fluid methods, Biofuels, Microalgae metabolism, Animal Feed
- Abstract
Anaerobic digestate animal effluent (ADAE) contains high N and P nutrients which need to be treated. In this study, an integrated process was proposed using a microalgae consortium of Chlorella and Scenedesmus. The system was designed for 71 m
3 /d (medium-sized) and 355 m3 /d (large-sized) animals of ADAE. Process simulation estimated to produce 83-417 kg d-1 of microalgae biomass which can be used as further products. As much as 2 kg of animal feed and 36-180 L/d of bio-oil can be produced during the treatment of 1 m3 /d of ADAE. The produced biogas can generate 247-1,217 MWh y-1 of electricity. Likewise, the process can reduce greenhouse gas emissions by 2 kg-CO2 eq kg-1 of hot standard carcass weight (HSCW). This integrated system offers merits in treating ADAE as well as producing chemicals and energy with low environmental burdens., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)- Published
- 2025
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