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Exploration of Microalgal Species for Nutrient Removal from Anaerobically Digested Swine Wastewater and Potential Lipids Production
Content Provider | MDPI |
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Author | Chen, Zhihui Xiao, Yunhua Liu, Tan Yuan, Mingmin Liu, Gang Fang, Jun Yang, Bo |
Copyright Year | 2021 |
Description | Bio-treatment of anaerobically treated swine wastewater (ADSW) mediated by microalgae has been deemed as a promising strategy. In the present study, six microalgal strains were used to conduct batch experiments in 0~100% ADSW in order to evaluate their potentials for nutrient removal and biodiesel production. Two strains, Chlorella vulgaris FACHB-8 and Chlorella sp. FACHB-31, were selected based on their better growth performances, higher tolerance to wastewater (up to 100%), and better nutrient removal abilities. The capacity of each strain to remove TN, TP, NH_{4}$^{+}$-N, as well as lipid production and biomass composition in 100% ADSW were further examined. After 15 days of culture, 87.68~89.85%, 92.61~93.68%, and 97.02~97.86% of the nitrogen, phosphorus, and ammonia nitrogen were removed by Chlorella sp. FACHB-31 and C. vulgaris FACHB-8. Their lipid content and lipid productivities were 29.63~33.33% and 18.91~23.10 mg $L^{−1}$ $d^{−1}$, respectively. Proteins were both the major biomass fraction followed by lipids and then carbohydrates. Their fatty acid profiles both mainly consisted of C-16:0, C-18:1, C-18:0, and C-18:2. Taken together, our results suggest that C. vulgaris FACHB-8 and Chlorella sp. FACHB-31 are potential candidates for biodiesel production by using ADSW as a good feedstock. |
Starting Page | 2469 |
e-ISSN | 20762607 |
DOI | 10.3390/microorganisms9122469 |
Journal | Microorganisms |
Issue Number | 12 |
Volume Number | 9 |
Language | English |
Publisher | MDPI |
Publisher Date | 2021-11-30 |
Access Restriction | Open |
Subject Keyword | Microorganisms Water Science and Technology Wastewater Treatment Microalgae Nutrient Removal Lipid Biodiesel Chlorella |
Content Type | Text |
Resource Type | Article |