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- Title
Integrated Microalgae Cultivation for Sustainable Wastewater Treatment and Carbon Dioxide Bio-Fixation in Milk Factories.
- Authors
Handayani, Titin; Priyanto, Fajar Eko; Sulistia, Susi; Oktaviani, Avi Nurul; Sopiah, Nida; Santoso, Arif Dwi; Putra, Agusta Samodra; Djarot, Ira Nurhayati; Widyastuti, Netty; Tjokrokusumo, Donowati; Apriyanto, Heri; Rifai, Akhmad; Aziz, Abdul; Wijayanti, Sri Peni; Bahua, Hismiaty; Nuha, Nuha; Isharyadi, Febrian; Paminto, Ari Kabul; Ariyani, Nadia Rizki
- Abstract
Technologies have been developed to reduce CO2 emissions, including CO2 bio-fixation by microalgae. This study evaluates carbon reduction by integrating milk factory wastewater treatment with microalgal biomass production, including its sustainability aspects through life cycle assessment (LCA) and techno-economic assessment (TEA). The microalgae species used were a consortium of Chlorella sp. and Scenedesmus sp. Five levels of carbon dioxide were provided to microalgae cultures: 0%, 5.5%, 6.2%, 8.1%, and 10.3%. Observed variables included CO2 uptake, absorption efficiency, and microalgal biomass production. The results showed that the CO2 sequestration efficiency by indigenous microalgae reached 0%, 9.2%, 98.8%, 96.2%, and 93.2% with average CO2 level loadings of 0%, 5.2%, 6.2%, 8.1%, and 10.3%, respectively. Chlorella sp. exhibited greater tolerance to high levels of CO2 concentration than Scenedesmus sp. TEA analysis revealed that CO2 bio-fixation and wastewater utilization significantly increased microalgal biomass production while also reducing environmental pollution. Furthermore, LCA indicated that the initial biomass production method (scenarios 1 and 2) had a higher environmental impact than the advanced method using wastewater treatment (scenarios 3 and 4). In conclusion, coupling microalgaebased wastewater treatment with CO2 bio-fixation offers promise for CO2mitigation, enhanced biomass production, and reduced operational costs.
- Subjects
MILK industry; CARBON dioxide; MICROALGAE; WASTEWATER treatment; BIOMASS energy
- Publication
International Journal of Sustainable Development & Planning, 2023, Vol 18, Issue 9, p2941
- ISSN
1743-7601
- Publication type
Article
- DOI
10.18280/ijsdp.180932