Publication Date:
2015-11-19
Description:
The gasification of microalgae in supercritical water is presented in this work. The product gas contained mainly H 2 , CO 2 , CH 4 and C 2 H 6 . Operating at high temperatures and lower biomass concentrations resulted in the highest carbon gasification efficiency and the lowest total organic carbon levels in the residual water. Due to its content of inorganic nutrients, the residual water was applied as the cultivation medium for microalgae. However, the growth in the untreated residual water was inhibited by the existence of potentially toxic substances evolved from gasification. Upon treatment using activated carbon filtration and UV-degradation, these substances were eliminated and the cultivation in the residual water was possible. The major fraction of inorganic residues in the system during gasification was recovered by the means of water purging, increasing the potential of nutrients recycle for cultivation.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
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