Removal of lead(II) by Saccharomyces cerevisiae AUMC 3875

El-Sayed, Manal Tawfeek

doi:10.1007/s13213-013-0609-x

Cited by 28 publications

(19 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the case of higher dosages of biological adsorbent, the available exchangeable sites on the cell surface could not be covered completely by the available solute, which led to a low capacity of adsorption. Moreover, the biosorption efficiency was also affected by competition for available metal ion adsorption sites and aggregation or overlapping on the cell surface [40]. Similar results were also indicated in previous studies [41,42].…”

Section: Effect Of Biosorbent Dosagesupporting

confidence: 88%

The Synthesis of PbS NPs and Biosorption of Pb(II) by Shinella Zoogloeoides PQ7 in Aqueous Conditions

Zhang

Huang

2020

Water

View full text Add to dashboard Cite

Increasing heavy metal pollution in water continues to endanger human health. The genus Shinella has potential for heavy metal bioremediation but has rarely been studied. In this study, we report that Shinella zoogloeoides PQ7 turns black in the presence of lead ions. Transmission electron microscopy (TEM), Scanning electron microscopy–energy dispersive X-ray spectroscopy (SEM–EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) indicated that PbS nanoparticles (NPs) were synthesized by PQ7. Moreover, PQ7 was used as a biosorbent to remove Pb(II) from aqueous solutions. Biosorption performance was evaluated in terms of contact time, pH, biomass dosage and initial Pb(II) concentration. The equilibrium and kinetic data were consistent with the Freundlich isotherm model (R2 = 0.986) and pseudo-second-order model (R2 = 0.977), respectively. The maximum (qmax) Pb(II) adsorption reached 222.22 mg/g, which was higher than that of other bacteria reported in previous literature. SEM–EDS, XRD and Fourier transform infrared (FTIR) analyses also confirmed the adsorption of Pb(II) by the PQ7 cells. In conclusion, PQ7 is a promising strain in removing and recovering Pb(II) from wastewater.

show abstract

Section: Effect Of Biosorbent Dosagesupporting

confidence: 88%

The Synthesis of PbS NPs and Biosorption of Pb(II) by Shinella Zoogloeoides PQ7 in Aqueous Conditions

Zhang

Huang

2020

Water

View full text Add to dashboard Cite

show abstract

“…The YST sorbent just removed 27% (27.7 mg/g), of lead in 100 ppm solutions, 13% (39.8 mg/g) in 500 ppm and 0% in 1000 ppm. These results reveal that the sorption capacity increases initially, and decreased with the increase of the metal concentration to 1000 ppm, in both tests El-Sayed (2013) showed that the sorption capacity increases with increase lead concentration but in concentration higher than 300 ppm, the sorption capacity decreases. This occurs due to the saturation of the bindings sites.…”

Section: Lead Biosorptionmentioning

confidence: 60%

A study of bio-hybrid silsesquioxane/yeast: Biosorption and neuronal toxicity of lead

Trama-Freitas

Freitas

Martins

et al. 2017

Journal of Biotechnology

View full text Add to dashboard Cite

Lead is a heavy metal of high impact for the environment as well as for human health, being cause of several diseases. Considering the importance of obtaining an effective treatment for lead removal, a new hybrid material was developed for sorption of Pb from aqueous solution. The effect of pH, temperature, liquid/solid ratio (g/cm) and lead concentration on the sorption capacity of yeasts chemically modified with cubic silsesquioxane (YS) was analyzed. Additionally, the toxicity of lead on the neuronal activity was also investigated in order to assess whether the damage caused by the Pb ion is reversible or not. The YS is highly promissory as sorbent of lead in high concentrations (100 and 500ppm), reaching high efficiency in short contact times (15min), and at the natural pH (4) of the Pb solution and room temperature. The best sorption obtained was 82% removal and 248mg/g with 500cm/g sorbent, pH 4, room temperature and contact time of 15min. Besides, such high efficiencies are obtained with low quantities of biosorbent, when compared with other similar materials. The impact of lead on neuronal function was studied by measuring autofluorescence signals, associated with changes in cellular metabolism, at the hippocampal CA3 area in brain slices. In this toxicity tests, the effect of low concentrations of lead (1 and 3μM) on neuronal activity was evaluated. After removal of the lead, the irreversibility of the observed changes can be verified, which suggests the existence of neuronal damages.

show abstract

“…Las levaduras control presentaron morfología uniforme y continua (figura 4A), en cambio, las que fueron incubadas con Cd mostraron cambios de forma, rugosidades en su superficie, y una aparente reducción de contacto entre células (figura 4B). La aparición de rugosidades en la superficie de S. cerevisiae también se ha observado después de exponer a la levadura a diferentes concentraciones de plomo y se atribuye a la acumulación de los metales pesados en su pared celular (El-Sayed, 2013). Por otro lado, la pérdida de contacto celular se adjudica al efecto tóxico del metal sobre la levadura, efecto que también se observa al exponer a la levadura a plomo, uranio y arsénico (Liu y col., 2010; Thippeswamy y col., 2014).…”

Section: Efecto Del CD En La Forma Y Tamaño De S Cerevisiaeunclassified

BIOSORPTION OF CADMIUM FROM AQUEOUS SOLUTION BY BAKER’S YEAST(Saccharomyces cerevisiae)

Moreno-Rivas¹,

Armenta-Corral²,

Frasquillo-Félix³

et al. 2016

Rev.Mex.Ing.Quim.

View full text Add to dashboard Cite

show abstract

Removal of lead(II) by Saccharomyces cerevisiae AUMC 3875

Cited by 28 publications

References 33 publications

The Synthesis of PbS NPs and Biosorption of Pb(II) by Shinella Zoogloeoides PQ7 in Aqueous Conditions

The Synthesis of PbS NPs and Biosorption of Pb(II) by Shinella Zoogloeoides PQ7 in Aqueous Conditions

A study of bio-hybrid silsesquioxane/yeast: Biosorption and neuronal toxicity of lead

BIOSORPTION OF CADMIUM FROM AQUEOUS SOLUTION BY BAKER’S YEAST(Saccharomyces cerevisiae)

Contact Info

Product

Resources

About