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Application of ceramic membranes for microalgal biomass accumulation and recovery of the permeate to be reused in algae cultivation

Paper ID Volume ID Publish Year Pages File Format Full-Text
30142 44460 2015 6 PDF Available
Title
Application of ceramic membranes for microalgal biomass accumulation and recovery of the permeate to be reused in algae cultivation
Abstract

•Densification of microalgae using ceramic membranes•Nutrients were efficiently removed from solutions.•Rational management of water•Outlook for further potential development of this technology was also presented.

The present study was carried out to investigate the possibility of using ceramic membranes for microalgal biomass densification and to evaluate the qualitative composition of the permeate as a source of nitrogen and phosphorus for microalgae cultivated in a closed system. The studies were conducted on the microalga Monoraphidium contortum. The microfiltration process was carried out on a quarter-technical scale using ceramic membranes with 1.4 μm, 300 and 150 kDa cut-offs. Permeate flux and respective hydraulic resistances were calculated. Dissolved inorganic nitrogen and phosphorus fractions were measured in the feed and the permeate. It was noted that the permeate flux in the MF process was decreasing while the values of reversible and irreversible resistances were increasing as the cut-off of the studied membranes was diminishing. An analysis of the hydraulic series resistance showed that using a 300 kDa membrane would be the most beneficial, as it was characterized by a comparatively high permeate flux (Jv = 1.68 10− 2 m3/m2s), a comparatively low susceptibility to irreversible fouling (1.72 · 109 1/m) and a high biomass retention coefficient (91%). The obtained permeate was characterized by high concentrations of dissolved nitrogen and phosphorus forms, which indicated that it could be reused in the process of microalgal biomass production.

Keywords
Microfiltration; Monoraphidium contortum; Harvesting microalgae; Ceramic membrane
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Application of ceramic membranes for microalgal biomass accumulation and recovery of the permeate to be reused in algae cultivation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 153, December 2015, Pages 367–372
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us