Enhancing Biomass Production of Chlorella vulgaris in Anaerobically Digested Swine Wastewater Using Carbon Supplementation and Simultaneous Lipid Production
Source abstract
Abstract
This study investigated anaerobically digested swine wastewater (ADSW) as a nutrient source for Chlorella vulgaris FACHB-8 cultivation under mixotrophic conditions with carbon supplementation. The microalgal strain was grown in ADSW supplemented with six carbon sources, followed by concentration optimization. Under optimized conditions (20 g/L glucose), FACHB-8 demonstrated a high biomass productivity (271.31 mg/L/day) and a specific growth rate of 0.42 per day. The system achieved an 88.70% total nitrogen removal and an 82.93% total phosphorus removal. The biomass contained 45.59% lipids, 29.72% proteins, and 13.05% carbohydrates, with fatty acid methyl esters showing balanced proportions of saturated (50.77%) and unsaturated fatty acids (49.23%). These findings highlight the potential of glucose-based mixotrophic cultivation for simultaneous wastewater treatment, renewable biomass production, and value-added lipid production. This work proposes a scalable swine wastewater treatment system that synergizes bioremediation and renewable energy production via carbon-enhanced microalgae cultivation, offering a dual-functional strategy for sustainable livestock wastewater reuse.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Algal biology and biofuel production · Biodiesel Production and Applications · Process Optimization and Integration
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
Yuelushan Laboratory, Changsha 410128, China
Funding
Scientific Research Fund of Hunan Provincial Education Department · National Natural Science Foundation of China · Scientific Research Project of Hunan Provincial Department of Science and Technology · Natural Science Foundation of Hunan province, China
References (71)
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