Removal of chromate anions from aqueous stream by a cationic surfactant-modified yeast

Bingol, Atifet; Ucun, Handan; Bayhan, Yalçın Kemal; Karagündüz, Ahmet; Çakıcı, Avni; Keskinler, Bülent

doi:10.1016/j.biortech.2004.01.018

Cited by 87 publications

(40 citation statements)

References 18 publications

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“…On the other hand, at low pH values, the functional groups on the yeast cell wall are progressively more protonated and metal accumulation decreases. The opposite effect is observed with the removal of Cr(VI); at very acidic conditions (pH 1.0-2.5), the removal of Cr(VI) is enhanced (Bingol et al 2004;Goyal et al 2003;Krauter et al 1996;Machado et al 2010d;Wu et al 2011;Zhao and Duncan 1998). This different behaviour is due to the fact that at pH <5, the dominant species of Cr (VI) is HCrO 4 − , and the yeast cell surface is surrounded by H + ions, which enhances the HCrO 4 − interaction with biomass-binding sites by electrostatic forces (Machado et al 2010d;Özer and Özer 2003;.…”

Section: Factors Influencing Heavy Metal Removalmentioning

confidence: 95%

“…Bingol et al (2004) reported an increase in chromate anion removal due to the modification of the yeast surface with cetyl trimethyl ammonium bromide. Other studies have shown that yeast surfaces that have been modified with poly(amic acid) via the reaction of pyromellitic dianhydride and thiourea (Yu et al 2007) or with ethylenediaminetetraacetic dianhydride (Yu et al 2008), led to increases in Pb(II) and Cd(II) or Pb(II) and Cu(II) biosorption, respectively.…”

Section: Inactivating Processes and Chemical Modification Of The Yeasmentioning

confidence: 99%

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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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Section: Factors Influencing Heavy Metal Removalmentioning

confidence: 95%

Section: Inactivating Processes and Chemical Modification Of The Yeasmentioning

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 optimum removal of Cr(VI) was reported at pH 2.0 and 1.0 for Rhizopus nigricans and S. cerevisiae, respectively [73]. Yeast cells modified by a cationic surfactant achieved maximum Cr(VI) removal at pH 5.5 [74]. Mapoleno and Torto [75] demonstrated that the optimum pH for Cr(III) removal with budding yeast is 5.2.…”

Section: Biosorption Of Chromiummentioning

confidence: 97%

Interference of chromium with biological systems in yeasts and fungi: a review

Poljšak

Pócsi

Raspor

et al. 2010

J. Basic Microbiol.

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This paper deals with the interactions of chromium (Cr) with biological systems, focusing in particular on yeasts and fungi. These interactions are analysed with primarily regard to biochemical functions, but higher levels of organization are also considered. Thus, the morphological and cytological characteristics of selected microorganisms in response to exposure to chromium ions are evaluated. The different oxidation states of chromium and reactive oxygen species (ROS) generated in redox reactions with chromium ions are presented and characterized. The interactions of the most exposed subcellular structures, including the cell wall, plasma membrane and nuclei, have been deeply investigated in recent years, for two major reasons. The first is the toxicity of chromium ions and their strong impact on the metabolism of many species, ranging from microbes to humans. The second is the still disputed usefulness of chromium ions, and in particular trivalent chromium, in the glucose and fat metabolisms. Chromium pollution is still an important issue in many regions of the world, and various solutions have been proposed for the bioremediation of soil and water with selected microbial species. Yeasts and especially moulds have been most widely investigated from this aspect, and the biosorption and bioaccumulation of chromium for bioremediation purposes have been demonstrated. Accordingly, the mechanisms of chromium tolerance or resistance of selected microbes are of particular importance in both bioremediation and waste water treatment technologies. The mechanisms of chromium toxicity and detoxification have been studied extensively in yeasts and fungi, and some promising results have emerged in this area.

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“…In this sense, the following cationic surfactants are mainly used: octadecyltrimethylammonium bromide (C18, OTAB), cetyltrimethylammonium bromide (C16, CTAB) or chloride (C16, CTAC), cetylpyridinium bromide (C16, CPB) or chloride (C16, CPC), tetradecyltrimethylammonium bromide (C14, TTAB) and dodecylpyridinium chloride (C12, DPC) [6]. For the purpose of making sorbents, modifications of many biomasses or other substrates were carried out as follows: cellulose fibers with CTAB [7], wheat straw with CPB to remove anionic dyes [8], the tea waste with CTAB and CPB for the removal of anionic congo-red [9], silkworm exuviae with CTAB for removing anionic methyl orange [10], yeast biomass and lichens with CTAB to remove chromates [11], barley straw with CPC for the removal of food and mineral oils [12], coir pith with CTAB for the removal of chromates, sulphates and thiocyanates [13,14], zeolite with CTAB to remove phosphate [15], acetate-cellulose membranes with TTAB, CTAB, CTAC, and CPC for the removal of nitrates [16].…”

Section: Introductionmentioning

confidence: 99%

The preparation and utilization of the cationic sorbent based on the surfactant modified bottle gourd shell

Marković-Nikolić¹,

Bojić²,

Petković³

et al. 2017

Adv Techol

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The surface of the bottle gourd shell (BGS), a solid agricultural residue of Lagenaria vulgaris Ser. was chemically modified using a cationic surfactant, hexadecyltrimethylammonium chloride (HTAC). The success of the modification was confirmed by FTIR spectroscopy. Chemical characterization of the lignocellulosic BGS biomass and the surfactant modified bottle gourd shell (MBGS) was carried out using the compositional and elemental analysis. The amount of surfactant sorbed on the BGS surface was measured as a function of the surfactant bulk concentration. Sorption isotherms were used to verify self-assembly models of cationic surfactant sorption onto oppositely charged MBGS substrates. The shape of sorption isotherms was applied to describe the behavior of the surfactant/BGS system. The surfactant modified shell was tested as a sorbent for the removal of phosphate and nitrate from contaminated aqueous solutions. The sorption of anionic pollutants on MBGS was performed in a series of batch sorption experiments at 20 o C. It was found that the MBGS yielded sorption efficiency was 40% for phosphate and 22% for nitrate. The sorption mechanism involving the ion exchange might be responsible for the uptake of anions. The morphology and surface properties of the MBGS sorbent before and after sorption of anionic pollutants were analyzed by SEM methods. Compared to other non-surfactant sorbents, the advantage of MBGS as a sorbent is that it can be used for the removal of anionic pollutants not only from aqueous solutions but also from the emulsified oil wastewater or nonpolar effluents.

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Removal of chromate anions from aqueous stream by a cationic surfactant-modified yeast

Cited by 87 publications

References 18 publications

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

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

Interference of chromium with biological systems in yeasts and fungi: a review

The preparation and utilization of the cationic sorbent based on the surfactant modified bottle gourd shell

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