Enhancement of biosorption of zinc ions from aqueous solution by immobilized Candida utilis and Candida tropicalis cells

Ahmad, Muhammad Fayyaz; Haydar, Sajjad; Quraishi, Tauseef A.

doi:10.1016/j.ibiod.2013.04.016

Cited by 44 publications

(22 citation statements)

References 33 publications

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“…This indicates that bond stretching occurs to a lesser degree due to the presence of Ni(II) and Zn(II), and the following peak transmittance is reduced. These results are consistent with the study of Yin et al 17 and Ahmad et al 18 who observed that the biosorption of zinc and nickel ions by the biomass of yeast caused a decrease in transmittance compared to the control.…”

Section: Ftir Analysissupporting

confidence: 93%

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Biosorption of nickel (II) and zinc (II) from aqueous solutions by the biomass of yeast Yarrowia lipolytica

Wierzba

2017

Polish Journal of Chemical Technology

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This study examined the biosorption process of Ni(II) and Zn(II) from an aqueous solution by dead biomass of Yarrowia lipolytica. Optimum biosorption conditions were determined as a function of pH, biomass dosage, contact time, and temperature. The biosorbent was characterized by FTIR, which indicated the participation of hydroxyl, carboxyl, amide and amine groups in the process of binding the metal ions. The results showed that the biosorption processes of both metal ions closely followed pseudo-second order kinetics. The equilibrium data of Ni(II) and Zn(II) ions at 20, 30 and 40 o C fi tted the Langmuir and Freundlich isotherm models. Langmuir isotherm provided a better fi t to the equilibrium data, with a maximum biosorption capacity of the Y. lipolytica biomass for Ni(II) and Zn(II) of 30.12 and 44.44 mg/g respectively. The calculated thermodynamic parameters demonstrated that the biosorption of Ni(II) and Zn(II) ions onto the Y. lipolytica was feasible, spontaneous and endothermic.

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Section: Ftir Analysissupporting

confidence: 93%

“…Ahmad et al 18 showed that the biosorption process of Zn(II) by the biomass of Candida utilis and C. tropicalis involved hydroxyl, carboxyl, amide and amino groups. Similarly, Shinde et al …”

Section: Ftir Analysismentioning

confidence: 99%

Biosorption of nickel (II) and zinc (II) from aqueous solutions by the biomass of yeast Yarrowia lipolytica

Wierzba

2017

Polish Journal of Chemical Technology

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“…By comparing the previous isolates for phenol degradation, it was observed that the current strain is a more efficient and degraded higher concentration of phenol. Among the various species of yeast, C. tropicalis is the most studied yeast species for its potential for phenol degradation (Yan et al, 2005;Adav et al, 2007;Zhou et al, 2011;Ahmad et al, 2013;Basak et al, 2014a;Long et al, 2014). Besides C. tropicalis, other yeast such as C. lipolytica, Candida utilis, Candida albicans, Trichosporon montevideense, and Trichosporon cutaneum were also used to degrade the phenol and its derivatives (Chen et al, 2002;Vilimkova et al, 2008;Liu et al, 2011;Gerginovaa et al, 2014).…”

Section: Biodegradation Of Phenol By Free and Immobilized Cellsmentioning

confidence: 99%

Biodegradation of phenol by free and immobilized Candida tropicalis NPD1401

Kumar¹,

Neeraj²,

Mishra³

et al. 2018

Afr. J. Biotechnol.

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The present research aimed to evaluate the free and immobilized cell of Candida tropicalis NPD1401 for phenol degradation. Immobilized cell of C. tropicalis degraded efficiently up to 98% at a concentration of 1000 mg/l of phenol whereas free cells degraded up to 63% of the same concentration under 9 days of incubation. Stored immobilized beads were reused after 15 days and found to have successfully degraded 62.1% of phenol in the mineral salt medium (MSM). Growth of C. tropicalis was observed in the phenol containing medium by measuring the dry weight of biomass (0.89 g/l at concentration 1000 mg/l) and the degradation was monitored using analytical techniques. Liquid chromatography-mass spectroscopy (LC-MS) analysis confirmed that phenol was degraded by ortho-pathways by the finding of metabolite cis, cis-muconic acid, phenyl phosphate and catechol. Next, isolated strain was identified on the basis of PCR amplification of sequence D2 region of the large subunit of 28S rDNA and it was confirmed as C. tropicalis. By observing the efficiency of the isolate it may be used for the further bioremediation purpose of the phenol contaminated site in the environments.

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“…Negative ∆S value is an indication of reduced randomness at solid/solution interface system during adsorption. Also, low ∆S 0 indicates that the changes in entropy are negligible [62].…”

Section: Adsorption Thermodynamicsmentioning

confidence: 99%

Kinetic and Isotherm Analysis of Cu(II) Adsorption onto Almond Shell (Prunus Dulcis)

Yıldız

2017

Ecological Chemistry and Engineering S

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Abstract:In the work, adsorption of Cu 2+ ions onto almond shell were investigated under different operational conditions. Almond shell was used without any pretreatment prior to the tests. The optimum conditions for adsorption of Cu 2+ ions through almond shell were determined to be; pH 5.0, temperature 20ºC, shaking rate 125 rpm, sorbent dose 0.3 g and initial Cu 2+ ion concentration 50 mg/dm 3 . The equilibrium duration of the system was 60 minutes. The sorption capacities of the sorbents were predicted with the aid of equilibrium and kinetic models. The interactions of peanut shell with metal ions were constituted by SEM, EDX, FT-IR, XRD and AFM. The pseudo-first-order, pseudo-second-order, Weber-Morris, Elovich model and Bangham kinetic models were applied to test the experimental data. The Cu +2 ions adsorption onto almond shell was better defined by the pseudo-second-order kinetic model, for initial pH. The equilibrium data were evaluated using Langmuir, Freundlich, Temkin, D-R and Harkins Jura isotherms. The highest R 2 value in isotherm studies was obtained from Langmiur isotherm (R 2 = 0.98) for the inlet concentration.

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Enhancement of biosorption of zinc ions from aqueous solution by immobilized Candida utilis and Candida tropicalis cells

Cited by 44 publications

References 33 publications

Biosorption of nickel (II) and zinc (II) from aqueous solutions by the biomass of yeast Yarrowia lipolytica

Biosorption of nickel (II) and zinc (II) from aqueous solutions by the biomass of yeast Yarrowia lipolytica

Biodegradation of phenol by free and immobilized Candida tropicalis NPD1401

Kinetic and Isotherm Analysis of Cu(II) Adsorption onto Almond Shell (Prunus Dulcis)

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