논문 상세정보
Nutrient recycle from defatted microalgae (Aurantiochytrium) with hydrothermal treatment for microalgae cultivation
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초록
Abstract Defatted heterotrophic microalgae ( Aurantiochytrium limacinum SR21) was treated with high temperature water (175–350°C, 10–90min) to obtain nitrogen and phosphorous nutrients as a water soluble fraction (WS). Yields of nitrogen and phosphorous recovered in WS varied from 38 to 100% and from 57 to 99%, respectively. Maximum yields of nitrogen containing compounds in WS were proteins (43%), amino acids (12%) and ammonia (60%) at treatment temperatures of 175, 250 and 350°C, respectively. Maximum yield of phosphorous in WS was 99% at a treatment temperature of 250°C. Cultivation experiments of microalgae ( A. limacinum SR21) using WS obtained at 200 and 250°C showed positive growth. Water soluble fractions from hydrothermal treatment of defatted microalgae are effective nitrogen and phosphorous nutrient sources for microalgae cultivation. Highlights Nutrient recycle from defatted microalgae for microalgae cultivation is evaluated. N and P can be recovered from defatted microalgae by hydrothermal treatment. Nutrient efficiency depends on reaction conditions of the hydrothermal treatment. Hydrothermal treatment at high temperature conditions produce anti-growth agents. Graphical abstract [DISPLAY OMISSION]
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주제어
Biosolid treatment process . Internal recycle . Amino acid . Protein . Phosphorous.
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- DOI : http://dx.doi.org/10.1016/j.biortech.2016.12.078
- Elsevier : 저널> 권호 > 논문
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