Recovery of nutrients from swine wastewater using ultrafiltration: Applications for microalgae cultivation in photobioreactors
| Autor: | Jamie A. Hestekin, Jason Mariott, Marty D. Matlock, Maryam Asgharpour, Emily Gottberg, Jessica Vaden, Heather N. Sandefur |
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| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Waste management 020209 energy Ultrafiltration Photobioreactor Biomass 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law engineering.material Biology Contamination biology.organism_classification 01 natural sciences Nutrient Wastewater Porphyridium cruentum 0202 electrical engineering electronic engineering information engineering engineering Fertilizer 0105 earth and related environmental sciences Nature and Landscape Conservation |
| Zdroj: | Ecological Engineering. 94:75-81 |
| ISSN: | 0925-8574 |
| DOI: | 10.1016/j.ecoleng.2016.05.066 |
| Popis: | The large-scale production of microalgae poses a number of challenges, including a costly fertilizer demand. While wastewater provides a concentrated source of nutrients, the presence of biological contaminants and the expense of heat treatment are challenging for large-scale production. The goal of this study was to use ultrafiltration to purify wastewater for use in the cultivation of microalgae. Swine waste was filtered, and the resulting permeate was utilized in a Porphyridium cruentum culture. Fluxes remained relatively constant during operation, and the complete rejection of bacteria was observed. The permeate contained high concentrations of total nitrogen (695.6 mg L −1 ) and total phosphorus (69.1 mg L −1 ). Higher biomass productivity and lipid contents were observed in the microalgae cultivated in the waste medium compared to that of a control medium. This suggests that, by using ultrafiltration as an alternative to heat treatment, agricultural wastewaters could be utilized as a nutrient source for microalgae. |
| Databáze: | OpenAIRE |
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