کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
18246 42715 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New magnetically responsive yeast-based biosorbent for the efficient removal of water-soluble dyes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
New magnetically responsive yeast-based biosorbent for the efficient removal of water-soluble dyes
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Enzyme and Microbial Technology - Volume 40, Issue 6, 2 May 2007, Pages 1551–1556
نویسندگان
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