Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 2

yeast cells Related Abstracts

2 Chemical Modification of Biosorbent for Prconcentation of Cadmium in Water Sample

Authors: Homayon Ahmad Panahi, Elham Moniri, Niusha Mohseni Darabi

Abstract:

A new biosorbent is prepared by coupling a cibacron blue to yeast cells. The modified yeast cells with cibacron blue has been characterized by Fourier transform infrared spectroscopy (FT-IR) and elemental analysis and applied for the preconcentration and solid phase extraction of trace cadmium ion from water samples. The optimum pH value for sorption of the cadmium ions by yeast cells- cibacron blue was 5.5. The sorption capacity of modified biosorbent was 45 mg. g−1. A recovery of 98.2% was obtained for Cd(II) when eluted with 0.5 M nitric acid. The method was applied for Cd(II) preconcentration and determination in sea water sample.

Keywords: Solid Phase Extraction, yeast cells, Nickl, isotherm study

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1 Removal of Samarium in Environmental Water Samples by Modified Yeast Cells

Authors: Homayon Ahmad Panahi, Elham Moniri, Seyed Mehdi Seyed Nejad

Abstract:

A novel bio-adsorbent is fabricated by attaching a cibacron blue to yeast cells. The modified bio-sorbent has been characterized by some techniques like Fourier transform infrared spectroscopy (FT-IR) and elemental analysis (CHN) and applied for the preconcentration and determination of samarium from aqueous water samples. The best pH value for adsorption of the brilliant crecyle blue by yeast cells- cibacron blue was 7. The sorption capacity of modified biosorbent was 18.5 mg. g⁻¹. A recovery of 95.3% was obtained for Sm(III) when eluted with 0.5 M nitric acid. The method was applied for Sm(III) preconcentration and determination in river water sample.

Keywords: Solid Phase Extraction, removal, samarium, water sample, yeast cells

Procedia PDF Downloads 98