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Life cycle assessment of integrated microalgae oil production in Bojongsoang Wastewater Treatment Plant, Indonesia
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Journal Article
Life cycle assessment of integrated microalgae oil production in Bojongsoang Wastewater Treatment Plant, Indonesia
2024
Overview
This study aims to determine the eco-friendliness of microalgae-based renewable energy production in several scenarios based on life cycle assessment (LCA). The LCA provides critical data for sustainable decision-making and energy requirement analysis, including net energy ratio (NER) and cumulative energy demand (CED). The
Centrum voor Milieuwetenschappen Leiden
(CML) IA-Baseline was used on environmental impact assessment method by SimaPro v9.3.0.3® software and energy analysis of biofuel production using native polyculture microalgae biomass in municipal wastewater treatment plants (WWTP) Bojongsoang, Bandung, Indonesia. The study was analyzed under three scenarios: (1) the current scenario; (2) the algae scenario without waste heat and carbon dioxide (CO
2
); and (3) the algae scenario with waste heat and carbon dioxide (CO
2
). Waste heat and CO
2
were obtained from an industrial zone near the WWTP. The results disclosed that the microalgae scenario with waste heat and CO
2
utilization is the most promising scenario with the lowest environmental impact (− 0.139 kg CO
2
eq/MJ), positive energy balance of 1.23 MJ/m
3
wastewater (NER > 1), and lower CED value across various impact categories. It indicates that utilizing the waste heat and CO
2
has a positive impact on energy efficiency. Based on the environmental impact, NER and CED values, this study suggests that the microalgae scenario with waste heat and CO
2
is more feasible and sustainable to adopt and could be implemented at the Bojongsoang WWTP.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
