Assessment of Mercury biosorption by Saccharomyces cerevisiae: Response surface methodology for optimization of low Hg (II) concentrations

Hadiani, Mohammad Rasoul; Rahimifard, Nahid; Younesi, Habibollah

doi:10.1016/j.jece.2018.07.034

Cited by 42 publications

(45 citation statements)

References 51 publications

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“…In addition, by increasing Cd concentration from 40 to 100 µg/L, the biosorption yield increased (Figure 1a). Similar to our study results, Hadiani et al [20] reported that Cd removal by S. cerevisiae increased with a rising Cd level (25 to 80 µg/L). Ghorbani et al [37] observed the Cd bioremoval by S. cerevisiae (2.13 g/L) at the concentration of 26.46 mg/L.…”

Section: Discussionsupporting

confidence: 93%

“…This trend is due to the carboxyl, hydroxyl and amino groups of the cell wall as the main responsible for the heavy metals' absorption [31][32][33]. As the number of metal ions increased, their absorption to the surface of the S. cerevisiae increases; therefore, higher biosorption would be observed [20,34,35]. By enhancing the S. cerevisiae biomass concentrations, the biosorption increases because of the more available binding sites for metal ions and therefore more binding combinations [36].…”

Section: Discussionmentioning

confidence: 99%

“…It is an economically available biosorbent [16]. There are some studies about using this yeast for heavy metal biosorption [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the effects of three main factors; initial metal concentration, biomass concentration and contact time on the biosorption capacity of S. cerevisiae were studied. These factors were chosen through the previous studies of heavy metal bioremoval [19][20][21][22] and also based on the results of our research team. This technique would be useful in the case of emergencies in the food and beverage industry.…”

Section: Introductionmentioning

confidence: 99%

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The Biosorption Capacity of Saccharomyces Cerevisiae for Cadmium in Milk

Massoud

Sharifan

Asadi

et al. 2020

Dairy

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This study aimed to evaluate the capacity of Saccharomyces cerevisiae for Cadmium absorption in milk. Nowadays, one of the most serious problems of the industrialized world is heavy metal pollution. Applying microorganisms as novel biotechnology is very useful, especially in foodstuffs. Among the biosorbents used for heavy metal removal, Saccharomyces cerevisiae has received increasing attention due to its popularity in the food industry. In this regard, the effects of some important factors such as the initial metal concentration, biomass concentration and contact time on the biosorption capacity of Saccharomyces cerevisiae were studied. The biosorption was analyzed by the inductively coupled plasma mass spectrometer (ICP-MS). The maximum cadmium (Cd) removal (70%) was at 80 μg/L of Cd concentration in milk samples containing 30 × 108 CFU Saccharomyces cerevisiae at the end of storage time (the 4th day). There were no significant differences in the sensory and physicochemical properties (pH, acidity and density) of milk samples during storage (p < 0.05). The isotherm studies were followed by two popular models, Langmuir and Freundlich, and the results showed a better fit to the Langmuir isotherm. Altogether, the results of this study demonstrate that the approach of using this valuable yeast could be applied for food detoxification and producing healthier foodstuffs.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

“…It is an economically available biosorbent [16]. There are some studies about using this yeast for heavy metal biosorption [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Biosorption Capacity of Saccharomyces Cerevisiae for Cadmium in Milk

Massoud

Sharifan

Asadi

et al. 2020

Dairy

Self Cite

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“…The statistical and modeling analysis were managed using a software of Design Expert 10.0 (Stat-Ease Inc., Minneapolis, MN, USA). Experimentalresult were fitted to a quadratic polynomial model, which can be shown as Eq [35][36]:…”

Section: Box Behnken Designmentioning

confidence: 99%

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Cao

Yang

et al. 2020

PLoS ONE

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In this study, the Pb 2+ biosorption potential of live and dead biosorbents of the hydrocarbondegrading strain Rhodococcus sp. HX-2 was analyzed. Optimal biosorption conditions were determined via single factor optimization, which were as follows: temperature, 25˚C; pH, 5.0, and biosorbent dose, 0.75 g L −1. A response surface software (Design Expert 10.0) was used to analyze optimal biosorption conditions. The biosorption data for live and dead biosorbents were suitable for the Freundlich model at a Pb 2+ concentration of 200 mg L −1. At this same concentration, the maximum biosorption capacity was 88.74 mg g −1 (0.428 mmol g −1) for live biosorbents and 125.5 mg g −1 (0.606 mmol g −1) for dead biosorbents. Moreover, in comparison with the pseudo-first-order model, the pseudo-second-order model seemed better to depict the biosorption process. Dead biosorbents seemed to have lower binding strength than live biosorbents, showing a higher desorption capacity at pH 1.0. The order of influence of competitive metal ions on Pb 2+ adsorption was Cu 2+ > Cd 2+ > Ni +. Fourier-transform infrared spectroscopy analyses revealed that several functional groups were involved in the biosorption process of dead biosorbents. Scanning electron microscopy showed that Pb 2+ attached to the surface of dead biosorbents more readily than on the surface of live biosorbents, whereas transmission electron microscopy confirmed the transfer of biosorbed Pb 2+ into the cells in the case of both live and dead biosorbents. It can thus be concluded that dead biosorbents are better than live biosorbents for Pb 2+ biosorption, and they can accordingly be used for wastewater treatment.

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Mucin‐Based Composites for Efficient Mercuric Biosorption

Gavriely

Richter

Zucker

2022

Advanced Sustainable Systems

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In this study, the extraordinary biosorption of mucin, a natural glycoprotein with selectivity towards metals in physiological processes, is leveraged to remove heavy metals from wastewater. The authors assess the performance of dissolved mucin for Hg2+ adsorption through studies of kinetics, capacity, and selectivity. The results show that mucin can adsorb more than 124 mg g−1 Hg2+ while exhibiting ultra‐fast kinetics, with an equilibrium reached in a few seconds. The adsorption levels are optimized in pHs higher than 4 and remain almost unchanged in the presence of background ions. X‐ray photoelectron spectroscopy and Fourier transform infrared analyses indicated that the sorption mechanism is dominated by electrostatic interactions and mercuric complexation with mucin's active sites, whereas the undesirable removal via mercuric reduction does not occur. To use mucin in a practical and green fashion for metal adsorption, mucin‐based solid structures, including films, beads, and nanofibers (NFs), are fabricated and assessed. Of these structures, the NFs show the best performance, with an uptake over 109 mg g−1 and a high structural stability over multiple adsorption and regeneration cycles. The findings point to the potential use of mucin as a future green alternative for metal biosorption for environmental applications.

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Assessment of Mercury biosorption by Saccharomyces cerevisiae: Response surface methodology for optimization of low Hg (II) concentrations

Cited by 42 publications

References 51 publications

The Biosorption Capacity of Saccharomyces Cerevisiae for Cadmium in Milk

The Biosorption Capacity of Saccharomyces Cerevisiae for Cadmium in Milk

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Mucin‐Based Composites for Efficient Mercuric Biosorption

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