Abstract：
:Coagulation-flocculation can be considered as one of the least energy intensive microalgae biomass harvesting processes. However, cost of the coagulant and biomass contamination are two critical issues that need to be considered. In this study, ferric chloride (72-96mg/L) was used to effectively harvest Scenedesmus sp. (530mg/L) - grown in BG-11 media and wastewater. Reducing the culture pH below 6.5, greatly improved the harvesting efficiency. Acidic solution (pH 1.0) was very effective to recover (almost 90%) the associated iron from the harvested biomass. Scenedesmus sp. was able to grow in the supernatant and utilize the residual iron in it. Iron extracted solution, with a supplementation of 9.8mg/L ferric chloride, was able to achieve similar harvesting efficiency. The potential recovery of iron from the harvested biomass and its reuse in the harvesting can improve the biomass quality for subsequent downstream processing while reducing the cost.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Das P,Thaher MI,Abdul Hakim MA,Al-Jabri HM,Alghasal GSdoi
10.1016/j.biortech.2016.06.014subject
Has Abstractpub_date
2016-09-01 00:00:00pages
824-9eissn
0960-8524issn
1873-2976pii
S0960-8524(16)30814-8journal_volume
216pub_type
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