Bioremediation of Pyropia-processing wastewater coupled with lipid production using Chlorella sp
| Autor: | Qiang Wang, Hui Chen, Changhai Wang, Guang Gao, Shiyan Zheng, Shangyun Zou, Yiwen Yan, Meilin He, Shanyi Chen |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Environmental Engineering Nitrogen Bioengineering Environmental pollution Chlorella Wastewater 010501 environmental sciences 01 natural sciences Bioremediation Nutrient 010608 biotechnology Microalgae Biomass Food science Waste Management and Disposal Incubation 0105 earth and related environmental sciences Biodiesel biology Renewable Energy Sustainability and the Environment Chemistry Chemical oxygen demand General Medicine biology.organism_classification Lipids Biodegradation Environmental Biofuels |
| Zdroj: | Bioresource Technology. 321:124428 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2020.124428 |
| Popis: | Pyropia-processing wastewater (PPW) contains diverse organic nutrients and causes environmental pollution. To explore the nutrient removal efficiency and growth performance of Chlorella sp. on PPW, the cultures were conducted in different culture substrates. Results showed that, after 7 days of incubation, the removal rates of total nitrogen (TN), total phosphorus (TP) and phycobiliprotein (PP) all reached more than 90% by cultivating Chlorella sp. C2 and C. sorokiniana F-275 in PPW. The chemical oxygen demand (COD) removal efficiencies could be over 50%. Meanwhile, the increments of biomass in two tested Chlorella strains were 1.39 and 4.89 times higher than those of BG11 and BBM substrates and the increases in lipid productivity were 1.34 and 10.18- fold, respectively. The C18:3 fatty acid proportions were markedly reduced by 27.89% and 29.10%. These results suggest that Chlorella sp. could efficiently reduce various nutrients in PPW and simultaneously accumulate higher biomass with higher biodiesel characteristics. |
| Databáze: | OpenAIRE |
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