期刊
BIORESOURCE TECHNOLOGY
卷 228, 期 -, 页码 186-192出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.12.078
关键词
Biosolid treatment process; Internal recycle; Amino acid; Protein; Phosphorous
资金
- Next-generation Energies for Tohoku Recovery (NET) project of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan
Defatted heterotrophic microalgae (Aurantiochytrium limacinum SR21) was treated with high temperature water (175-350 degrees C, 10-90 min) 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 degrees C, respectively. Maximum yield of phosphorous in WS was 99% at a treatment temperature of 250 degrees C. Cultivation experiments of microalgae (A. limacinum SR21) using WS obtained at 200 and 250 degrees C showed positive growth. Water soluble fractions from hydrothermal treatment of defatted microalgae are effective nitrogen and phosphorous nutrient sources for microalgae cultivation. (C) 2016 Elsevier Ltd. All rights reserved.
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