Utilization of tannery wastewater for biofuel production: New insights on microalgae growth and biomass production
Open accessAbstract
Microalgae cultivation on tannery wastewater (TWW) has been examined in some studies as a possible biological application to reduce contamination load and discharge effluents safely. However, Growth aspects, different tolerate strains and enriching the medium were not well investigated. In our study we applied Scenedesmus sp., Chlorella variabilis and Chlorella sorokiniana with different TWW concentrations. C. sorokiniana and C. variabilis cell density, chlorophyll, and sugar content grew substantially as compared to control. C.sorokiniana biomass and total lipids folded three and two times in 25% and 40% TWW, respectively as compared to control. Scenedesmus sp. showed longer lag phase and lower performance compared to the other two strains. Kelp waste extract (KWE) was added to balance the nutrients supply for C. sorokiniana, of which growth and effluents indicators were then greatly promoted in all concentrations. As the lag phase was shortened from 8 to 4 days in 60% concentration, subsequently, chlorophyll, carbohydrates, biomass and total lipids appreciated by 184%, 400%, 162% and 135%, respectively. Furthermore, the COD and ammonium removals improved by 51% and 45%, respectively. These outcomes emphasize the suitability of using TWW for microalgae cultivation with the suitable concentration while adding kelp waste extract for further enhancement.
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Using wastewater nutrients for microalgae cultivation can reduce production costs and advance the industry.
“To address this, it is important to explore using wastewater nutrients for microalgae cultivation, which can reduce production costs and advance the industry [49].”
From A Holistic Approach to Circular Bioeconomy Through the Sustainable Utilization of Microalgal Biomass for Biofuel and Other Value-Added Products (2024) · cites this paper as [49]
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References 43 · Cited by 100
- Authors
- Nagi, M., He, M., Li, D., Gebreluel, T., Cheng, B., & Wang, C.
- Affiliations
- Nanjing Agricultural University (CN)
- Corresponding author
- Wang, Changhai
- Venue
- Scientific Reports
- Published
- 2020-01-30
- Volume
- 10
- Issue
- 1
- Pages
- 1530-1530
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC6992776
- OpenAlex
- W3003265117
- Cited by
- 100
- References
- 43
- Citations by year
- 2026: 9 · 2025: 19 · 2024: 18 · 2023: 16 · 2022: 15 · 2021: 17 · 2020: 6
- FWCI
- 2.67
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Scientific Reports (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Funders
- National Natural Science Foundation of China (31770436)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Physical Sciences › Environmental Science › Waste Management and Disposal › Wastewater Treatment and Reuse
- Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Keywords
- tannery wastewater, microalgae cultivation, biofuel production, Chlorella sorokiniana, Chlorella variabilis, Scenedesmus, microalgal biomass, lipid production, COD removal, ammonium removal, wastewater treatment, lag phase
- MeSH terms
- Chlorella, Lipids, Biomass, Scenedesmus, Biofuels, Microalgae, Wastewater
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