Characterization and utilization of hydrothermal carbonization aqueous phase as nutrient source for microalgal growth

被引：55

作者：

Belete, Yonas Zeslase ^{[1
]}

Leu, Stefan ^{[2
]}

Boussiba, Sammy ^{[2
]}

Zorin, Boris ^{[2
]}

Posten, Clemens ^{[3
]}

Thomsen, Laurenz ^{[4
]}

Wang, Song ^{[4
]}

Gross, Amit ^{[1
]}

Bernstein, Roy ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Zuckerberg Inst Water Res, IL-84990 Beer Sheva, Israel

[2] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, French Associates Inst Agr & Biotechnol Drylands, Microalgal Biotechnol Lab, Sede Boqer Campus, IL-84990 Beer Sheva, Israel

[3] KIT, Inst Proc Engn Life Sci, Fritz Haber Weg 2, D-76131 Karlsruhe, Germany

[4] Jacobs Univ Bremen, Dept Phys & Earth Sci, Campus Ring 1, D-28759 Bremen, Germany

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 290卷

关键词：

Hydrochar; HTC aqueous phase; Nutrient removal; Microalgal cultivation; DISSOLVED ORGANIC-MATTER; WASTE-WATER TREATMENT; SEWAGE-SLUDGE; ENERGY; MUNICIPAL; BIOMASS; CULTIVATION; EXTRACTION; CHALLENGES; HYDROCHAR;

D O I：

10.1016/j.biortech.2019.121758

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study investigated the feasibility of using hydrothermal carbonization (HTC) aqueous phase as an alternative nutrient source for microalgae cultivation, and the microalgae cultivation capability to treat this complex medium to a level enabling its reuse or discharge. HTC of activated sludge was optimized in terms of the energy content of the solid hydrochar and the nutrient content of the HTC aqueous phase adequate for microalgal growth. Growth rates of Coelastrella sp. and Chlorella sp. in the HTC aqueous phase based growth medium and a control medium (mBG11) were similar, indicating that the HTC aqueous phase does not inhibit the microalgae growth. Nitrogen and phosphorus concentrations were reduced by > 90% and dissolved organic carbon by 80% after 6 days of cultivation, resulting in water quality suitable for reuse or discharge. This study confirms the microalgae high potential in a circular bio-economy to valorize wet bio-waste streams from various treatment methods.

引用

页数：8

共 49 条

[1] Microalgae growth on the aqueous phase from Hydrothermal Liquefaction of the same microalgae [J].