期刊
BIORESOURCE TECHNOLOGY
卷 267, 期 -, 页码 725-731出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.07.119
关键词
Bio-char; Microalgae; Nutrient recycling; Process integration; Sustainability; Wastewater
资金
- FEDER funds through COMPETE2020 - Programa Operacional Competitividade e Internacionalizacao (POCI) [POCI-01-0145-FEDER-006939]
- national funds through FCT Fundacao para a Ciencia e a Tecnologia
- FCT Investigator 2015 Programme [IF/01341/2015]
The intensive agricultural practices are increasing the demand for chemical fertilizers, being currently produced from a non-environmental friendly way. Besides the environmental impacts, the nutrient uptake efficiency by the crops is very low, representing huge losses into the fields. Therefore, it is crucial to study alternatives for the current chemical fertilizers, which simultaneous improve nutrient efficiency and minimize environmental impacts. A sustainable solution is to recover nutrients from wastewater streams with microalgal cultures and the biomass conversion into bio-char for soil amendment. Wastewaters are loaded with nitrogen and phosphorus and can be used as culture medium for microalgae. Thus, nutrients can be recycled, reducing the requirement of chemical fertilizers. This paper aims to review nutrient recovery from wastewater using microalgae and the biomass conversion into bio-char. This process promotes nutrient recycling and the bio-char (when added to soil) improves the nutrient uptake efficiency by crops.
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