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New magnetically responsive yeast-based biosorbent for the efficient removal of water-soluble dyes

Paper ID Volume ID Publish Year Pages File Format Full-Text
18246 42715 2007 6 PDF Available
Title
New magnetically responsive yeast-based biosorbent for the efficient removal of water-soluble dyes
Abstract

Fodder yeast (Kluyveromyces fragilis) cells were magnetically modified by a contact with the water-based magnetic fluid in order to prepare a new type of magnetically responsive biocomposite material. This procedure enabled a simple separation of modified cells by means of commercially available magnetic separators or strong permanent magnets. It allows using the prepared material as a new inexpensive magnetic affinity adsorbent for the removal of water-soluble dyes.Magnetically modified cells were characterized by means of magnetic and microscopy methods. Both isolated magnetic nanoparticles and aggregates of particles were present on the cell surface. The prepared material displayed a superparamagnetic behavior at room temperature, with a transition to a blocked state at TB ∼ 180 K for the applied magnetic field H = 50 Oe.Seven dyes (crystal violet, amido black 10B, congo red, Saturn blue LBRR, Bismarck brown, acridine orange and safranin O) were used to study the adsorption process. The dyes adsorption could be described with the Langmuir isotherm. The maximum adsorption capacities ranged between 29.9 (amido black 10B) and 138.2 (safranin O) mg of dye per g of dried magnetically modified cells.

Keywords
Fodder yeast; Kluyveromyces fragilis; Magnetic fluid; Magnetic iron oxides nanoparticles; Magnetically modified cells; Magnetic separation
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New magnetically responsive yeast-based biosorbent for the efficient removal of water-soluble dyes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 40, Issue 6, 2 May 2007, Pages 1551–1556
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