Kinetics of biosorption of cadmium on Baker’s yeast

Vasudevan, Padma; Padmavathy, V.; Dhingra, S.C

doi:10.1016/s0960-8524(03)00067-1

Cited by 144 publications

(64 citation statements)

References 20 publications

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“…Based on sorption capacity, Ho et al [12,[46][47][48] presented a pseudo-second-order sorption rate expression to show how the rate depends on the sorption capacity on solid phase but not the sorbate concentration. We here applied the pseudo-secondorder rate law for the experimental data to predict the biosorption kinetics.…”

Section: Kinetic Analysismentioning

confidence: 99%

Characteristic features of Bacillus cereus cell surfaces with biosorption of Pb(II) ions by AFM and FT-IR

Pan

Liu

et al. 2006

Colloids and Surfaces B: Biointerfaces

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In order to elucidate the potential mechanisms involved in the biosorption of metal ions, atomic force microscopy (AFM) and Fourier transform infrared (FT-IR) spectroscopy were used to characterize the interaction between Pb 2+ and Bacillus cereus. AFM imaging of the biomass surfaces exposed to different concentrations of lead ions solution showed a major morphological change occurred after Pb 2+ biosorption. The FT-IR spectra indicated the binding characteristics of the lead ions involved the carboxyl, hydroxyl and amino groups in the biomass. Equilibrium biosorption experiments of Pb 2+ were carried out to investigate the effects of pH values and the initial metal concentrations. The experimental isotherm data were then modeled using Langmuir, Freundlich, and Redlich-Peterson isotherm equations. As a result, the Redlich-Peterson model yielded the best fit of experimental data. Kinetics experiments showed the biosorption was a rapid process and the pseudo-second-order model was successfully applied to predict the rate constant of biosorption.

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Section: Kinetic Analysismentioning

confidence: 99%

Characteristic features of Bacillus cereus cell surfaces with biosorption of Pb(II) ions by AFM and FT-IR

Pan

Liu

et al. 2006

Colloids and Surfaces B: Biointerfaces

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“…Different yeast species have different absorption rates of the Cu +2 metal and consequently different resistance to it [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Change in Kinetic parameters of commercial yeast in the presence of copper fungicides

et al. 2016

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Abstract. The Serra Gaucha has a high rainfall occurrence during the ripening and harvest. It results in higher use of fungicides, being the copper-based ones, the most commonly used. High levels of this metal can cause stress to the yeast, thus, influencing on the fermentation kinetics. The aim of this study was to evaluate the fermentative behavior of oenological yeast in the presence of copper content in the must. The experiment used the following fungicides: Copper Sulfate, Copper Oxychloride and Copper Hydroxide. Samples were inoculated with S. cerevisiae, S. cerevisiae var. bayanus and Torulaspora delbrueckii and the fermentation was plotted for carbon dioxide production by time. The fermentative kinetics were assessed by the following kinetic parameters: the lag phase time, maximum rate of CO2 production and maximum production of CO2. The study showed that T. delbrueckii had higher sensitivity to copper regarding the lag phase. Copper oxychloride promoted greater latency period in yeast T. delbrueckii and S. cerevisiae. All copper fungicides decreased maximum rate of fermentation, and T. delbrueckii was the most affected. The maximum CO2 production during the fermentations significantly differed only in the presence of copper sulphate.

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“…S. cerevisiae is able to remove heavy metals from wastewater between pH 5.0 and 9.0 (Brady and Duncan 1994); in addition, pH values between 5 and 6 are optimal for Cu(II), Cd(II), Pb(II), Ni(II), Zn(II) and Cr(III) biosorption by yeast cells (Brady and Duncan 1994;Cui et al 2010;Ferraz and Teixeira 1999;Han et al 2006;Junghans and Straube 1991;Mapolelo and Torto 2004;Özer and Özer 2003;Vasudevan et al 2003;Zouboulis et al 2001). The pH of a solution affects the percentage of ionised groups on the yeast cell wall.…”

Section: Factors Influencing Heavy Metal Removalmentioning

confidence: 99%

Bioremediation of industrial effluents containing heavy metals using brewing cells of Saccharomyces cerevisiae as a green technology: a review

Soares

2011

Environ Sci Pollut Res

129

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The release of heavy metals into the environment, mainly as a consequence of anthropogenic activities, constitutes a worldwide environmental pollution problem. Unlike organic pollutants, heavy metals are not degraded and remain indefinitely in the ecosystem, which poses a different kind of challenge for remediation. It seems that the "best treatment technologies" available may not be completely effective for metal removal or can be expensive; therefore, new methodologies have been proposed for the detoxification of metal-bearing wastewaters. The present work reviews and discusses the advantages of using brewing yeast cells of Saccharomyces cerevisiae in the detoxification of effluents containing heavy metals. The current knowledge of the mechanisms of metal removal by yeast biomass is presented. The use of live or dead biomass and the influence of biomass inactivation on the metal accumulation characteristics are outlined. The role of chemical speciation for predicting and optimising the efficiency of metal removal is highlighted. The problem of biomass separation, after treatment of the effluents, and the use of flocculent characteristics, as an alternative process of cell-liquid separation, are also discussed. The use of yeast cells in the treatment of real effluents to bridge the gap between fundamental and applied studies is presented and updated. The convenient management of the contaminated biomass and the advantages of the selective recovery of heavy metals in the development of a closed cycle without residues (green technology) are critically reviewed.

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Kinetics of biosorption of cadmium on Baker’s yeast

Cited by 144 publications

References 20 publications

Characteristic features of Bacillus cereus cell surfaces with biosorption of Pb(II) ions by AFM and FT-IR

Characteristic features of Bacillus cereus cell surfaces with biosorption of Pb(II) ions by AFM and FT-IR

Change in Kinetic parameters of commercial yeast in the presence of copper fungicides

Bioremediation of industrial effluents containing heavy metals using brewing cells of Saccharomyces cerevisiae as a green technology: a review

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