Nutrient recycle from defatted microalgae (Aurantiochytrium) with hydrothermal treatment for microalgae cultivation

被引：29

作者：

Aida, Taku Michael ^{[1
]}

Maruta, Ryouma ^{[1
]}

Tanabe, Yuuhiko ^{[2
,3
]}

Oshima, Minori ^{[1
]}

Nonaka, Toshiyuki ^{[2
]}

Kujiraoka, Hiroki ^{[1
]}

Kumagai, Yasuaki ^{[1
]}

Ota, Masaki ^{[2
]}

Suzuki, Iwane ^{[3
]}

Watanabe, Makoto M. ^{[3
]}

Inomata, Hiroshi ^{[2
]}

Smith, Richard L., Jr. ^{[1
,2
]}

机构：

[1] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, Aramaki Aza Aoba 6-6-11, Sendai, Miyagi 9808579, Japan

[2] Tohoku Univ, Res Ctr Supercrit Fluid Technol, Aoba Ku, Aramaki Aza Aoba 6-6-11, Sendai, Miyagi 9808579, Japan

[3] Univ Tsukuba, Fac Life & Environm Sci, Tennodai 1-1-1, Tsukuba, Ibaraki 3058572, Japan

来源：

BIORESOURCE TECHNOLOGY | 2017年 / 228卷

关键词：

Biosolid treatment process; Internal recycle; Amino acid; Protein; Phosphorous; AMINO-ACIDS; KINETICS; ALGAE; BIODIESEL; BIOFUEL; DECOMPOSITION; OPTIMIZATION; LIQUEFACTION; TEMPERATURE; HYDROLYSIS;

D O I：

10.1016/j.biortech.2016.12.078

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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.

引用

页码：186 / 192

页数：7

共 38 条

[1] Amino acid transformation and decomposition in saturated subcritical water conditions [J].