Investigation of the removal of cyanide from aqueous solutions using biomass Saccharomyces cerevisiae

Dehghani, R. and Moosavi, G.A. and Takhtfiroozeh, S.M. and Rashedi, G.H. (2016) Investigation of the removal of cyanide from aqueous solutions using biomass Saccharomyces cerevisiae. DESALINATION AND WATER TREATMENT, 57 (56). pp. 27349-27354.

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Abstract

The industrial revolution and the rise of factories and industrial towns caused the increasing production of wastewater that contains hazardous compounds in the aqueous ecosystems. The purpose of this study was to investigate the removal of cyanide from aqueous solutions using yeast of Saccharomyces cerevisiae biomass. In this experimental-interventional study, to measure the concentration of cyanide, the titrimetric method was used. After determining the concentration of cyanide in the samples exposed to the S. cerevisiae yeast, the removal rate was calculated. In the concentration of 5mg/l of cyanide and at 15, 30, 60, 90min of contact, yeast weight values of 0, 0.5, 1, 1.5g/l, at the pH of 5, 7, 9 were studied. The data were statistically analyzed using SPSS 16 software. The study showed that with increasing the contact time of the yeast, cyanide removal efficiency increased. Concentration of 0.5g/l of yeast at pH of 9 and contact time of 15min had the lowest percentage of removal of cyanide, while concentration of 1.5g/l of yeast at pH of 7 and contact time of 90min had the highest level of removal of cyanide. About 0g/l yeast concentration at all times showed a significant relationship (p<0.001). According to the findings, this yeast is a suitable adsorbent for the removal of cyanide ions from wastewater. The yeast is easily produced in the very cheap fermentation process medium. Therefore, by replacing the expensive and noneconomical treatment methods with yeast biomass, contaminated wastewater can be treated.

Item Type: Article
Uncontrolled Keywords: Cyanide; Saccharomyces cerevisiae; Biological absorption
Subjects: Health Professions
Depositing User: editor . 2
Date Deposited: 02 Jan 2017 16:26
Last Modified: 04 Mar 2017 06:19
URI: http://eprints.kaums.ac.ir/id/eprint/24

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