Abstract
To improve nutrients removal from wastewater and enhance lipid production, cultivation of Chlorella vulgaris in wastewater with waste glycerol generated from biodiesel production using scum derived oil as feedstock was studied. The results showed that nutrients removal was improved and lipid production of C. vulgaris was enhanced with the addition of waste glycerol into wastewater to balance its C/N ratio. The optimal concentration of the pretreated glycerol for C. vulgaris was 10 g L-1 with biomass concentration of 2.92 g L-1, lipid productivity of 163 mg L-1 d-1, and the removal of 100% ammonia and 95% of total nitrogen. Alkaline conditions prompted cell growth and lipid accumulation of C. vulgaris while stimulating nutrients removal. The application of the integration process can lower both wastewater treatment and biofuel feedstock costs.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 252-261 |
| Number of pages | 10 |
| Journal | Bioresource Technology |
| Volume | 207 |
| DOIs | |
| State | Published - May 1 2016 |
Bibliographical note
Publisher Copyright:© 2016 Elsevier Ltd.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
-
SDG 6 Clean Water and Sanitation -
SDG 7 Affordable and Clean Energy
Keywords
- Biofuel production
- Microalga
- Waste glycerol
- Wastewater
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