Abstract：
:Energy consumption and water resource in the cultivation and harvesting steps still need to be minimized for the popularization of the microalgae-based products. An efficient electro-flocculation method for harvesting Dunaliella Salina integrated with local sand has been successfully applied. Sand was effective for speeding up the processes of flocculation and sedimentation of algal flocs and the electrolytic hydroxides was essential to bridge the sand and small flocs into large dense flocs. The maximal recovery effective improved from 95.13% in 6min to 98.09% in 4.5min and the optimal electrical energy consumption decreased 51.03% compared to conventional electro-flocculation in a laboratory ambient condition. Furthermore, reusing the flocculated medium in cultivation of the D. Salina with nitrogen supplemented performed no worse than using fresh medium. This sand enhanced electro-flocculation (SEF) technology provides a great potential for saving time and energy associated with improving microalgae harvesting.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Xiong Q,Pang Q,Pan X,Chika AO,Wang L,Shi J,Jia L,Chen C,Gao Ydoi
10.1016/j.biortech.2015.03.135subject
Has Abstractpub_date
2015-01-01 00:00:00pages
326-330eissn
0960-8524issn
1873-2976pii
S0960-8524(15)00467-8journal_volume
187pub_type
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