Use of calcium alginate beads and Saccharomyces cerevisiae for biosorption of 241Am

Araujo, Leandro Goulart de; Borba, Tânia R. de; Ferreira, Rafael Vicente de Pádua; Canevesi, Rafael Luan Sehn; Silva, Edson Antônio da; Dellamano, José Claudio; Marumo, Júlio Takehiro

doi:10.1016/j.jenvrad.2020.106399

Cited by 10 publications

(9 citation statements)

References 38 publications

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“…S. cerevisiae is a promising biosorbent that has been shown to eliminate pesticides [31], mycotoxins [32], and trace elements from synthesized water or aqueous solutions, even when deactivated, and it has its highest efficiency in short contact times [7,29,[33][34][35][36][37][38][39][40][41][42][43][44][45]. Furthermore, the encapsulation of S. cerevisiae in a biopolymer, for example, alginate [32,43,[46][47][48][49][50], is an alternative strategy for their application, as well as being steadier, simple-to-deal with, and economical.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Removal of Metal Ions from Wastewater by a Greener Approach

Ibrahim

El-Sesy

ElSayed

et al. 2022

Water

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The examination of the performance of raw and immobilized S. (Saccharomyces) cerevisiae in the simultaneous abatement of metal ions from wastewater effluent is the focal point of this article. The optimal storage time for raw and immobilized S. cerevisiae, during which they can be utilized, was estimated. The outcomes revealed that as the initial metal ion concentrations increased, the adsorption capacity improved, while the removal efficiency of S. cerevisiae yeast cells decreased, with the highest uptake obtained at the optimal conditions: pH = 5.0, 2.0 g S. cerevisiae/L, 25 °C, and a contact time of 25 min. The maximum adsorption capacities (qmax) for Pb(II), Cd(II), and Ni(II) ions are shown by Langmuir at 65, 90, and 51 mg/g, respectively. It was discovered that the metal ions’ biosorption reactions were spontaneous and were fitted by the pseudo-second-order model. The mechanisms of the metal ions’ abatement were explained by using XRD (X-ray diffraction), FTIR (Fourier transform infrared spectroscopy), (BET) Brunauer–Emmett–Teller, and TEM (transmission electron microscopy) outputs. EDTA and citric acid can eliminate more than 70 ± 4 and 90 ± 5% of the adsorbed ions, respectively. The experiment of storage demonstrated that the immobilized S. cerevisiae was more stable for 8 months than the raw yeast.

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Section: Introductionmentioning

confidence: 99%

Simultaneous Removal of Metal Ions from Wastewater by a Greener Approach

Ibrahim

El-Sesy

ElSayed

et al. 2022

Water

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“…This has been and remains a promising biotechnology for the removal of pollutants from aqueous solutions due to its simplicity, efficiency and to the availability of biomass and residual biomass. The biosorptive capacities of different types of biomasses in relation to the removal of different types of pollutants have been reported in numerous scientific papers [4,7,[23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…Different immobilization techniques and different supports were tested, among which we can mention polysulfone, polyvinyl alcohol, polyacrylamide, polyurethane, silica gel, carboxymethyl cellulose, brewer's spent grain, sodium alginate, chitosan [4,7,10,23,24].…”

Section: Introductionmentioning

confidence: 99%

“…Natural polymers such as chitosan and alginate have been used successfully in the processes of immobilization/encapsulation of enzymes and pharmaceuticals [29][30][31]. So, studies have expanded to obtain adsorbents/biosorbents by immobilizing microorganisms or other materials [4,7,24,26,[32][33][34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

“…Alginate is also an alternative for immobilization due to its good chemical stability, nontoxicity, incorporation efficiency and low cost [4,7,24,26].…”

Section: Introductionmentioning

confidence: 99%

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Eco-Friendly Biosorbents Based on Microbial Biomass and Natural Polymers: Synthesis, Characterization and Application for the Removal of Drugs and Dyes from Aqueous Solutions

et al. 2021

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Pharmaceuticals and dyes are a very important part of the nonbiodegradable or hard biodegradable substances present in wastewater. Microorganisms are already known to be effective biosorbents, but the use of free microbial cells involves difficulties in their separation from effluents and limits their application in wastewater treatment. Thus, this study aimed to develop biosorbents by immobilizing Saccharomyces cerevisiae, Saccharomyces pastorianus and Saccharomyces pastorianus residual biomass on natural polymers (alginate and chitosan) and to evaluate the biosorptive potential for removal of pharmaceuticals and dyes from water. Six types of biosorbents were synthesized and characterized by Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy techniques and their biosorptive capacities for three drugs (cephalexin, rifampicin, ethacridine lactate) and two dyes (orange II and indigo carmine) were evaluated. The obtained results show that the removal efficiency depends on the polymer type used for the immobilization. In case of alginate the removal efficiency is between 40.05% and 96.41% for drugs and between 27.83% and 58.29% for dyes, while in the case of chitosan it is between 40.83% and 77.92% for drugs and between 17.17% and 44.77% for dyes. In general, the synthesized biosorbents proved to be promising for the removal of drugs and dyes from aqueous solutions.

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