Flocculation properties of several microalgae and a cyanobacterium species during ferric chloride, chitosan and alkaline flocculation, Bioresource Technology (2016), doi: http://dx.doi.org/10.1016/j.biortech.2016.08.080 Archived versionAuthor manuscript: the content is identical to the content of the published paper, but without the final typesetting by the publisher This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. 28Flocculation holds great potential as a low-cost harvesting method for microalgae biomass 29 production. Three flocculation methods (ferric chloride, chitosan, and alkaline flocculation) were 30 compared in this study for the harvesting of 9 different freshwater and marine microalgae and one 31 cyanobacterium species. Ferric chloride resulted in a separation efficiency greater than 90% with a 32 concentration factor (CF) higher than 10 for all species. Chitosan flocculation worked generally 33 very well for freshwater microalgae, but not for marine species. Alkaline flocculation was most 34 efficient for harvesting of Nannochloropsis, Chlamydomonas and Chlorella sp. The concentration 35 factor was highly variable between microalgae species. Generally, minimum flocculant dosages 36 were highly variable across species, which shows that flocculation may be a good harvesting 37 method for some species but not for others. This study shows that microalgae and cyanobacteria 38 species should not be selected solely based on their productivity but also on their potential for low-39 cost separation. 47• high variation in optimal dosages between species and flocculation methods 48• chitosan was ineffective for harvesting marine species 49• species selection for low-cost separation is important 50 51 52 3 53
Cellulose nanocrystals were grafted with imidazole functionalities up to DS 0.06 using a one-pot functionalization strategy. The resulting nanocrystals were shown to have a pH responsive surface charge which was found to be positive below pH 6 and negative above pH 7. These imidazolyl cellulose nanocrystals were tested for flocculation of Chlorella vulgaris using CO2 to induce flocculation. Up to 90% flocculation efficiency was achieved with 200 mg L(-1) dose. Furthermore, the modified cellulose nanocrystals showed good compatibility with the microalgae during cultivation, giving potential for the production of reversible flocculation systems.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.