Experimental design for the optimization of copper biosorption from aqueous solution by Aspergillus terreus

Cerino-Córdova, F. J.; García-León, Azucena Minerva; Soto-Regalado, Eduardo; Sánchez-González, Mónica; Lozano-Ramírez, T.; García-Avalos, B.C.; Loredo-Medrano, José A.

doi:10.1016/j.jenvman.2011.01.004

Cited by 43 publications

(24 citation statements)

References 19 publications

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“…6. In comparison to other reported adsorbents as listed in Table 1, the PAA blended chitosan magnetic adsorbent exhibited higher Cu(II) uptake than most of reported adsorbents [2,25,[35][36][37][38][39][40]. In addition, compared with the millimeter-scale chitosan based adsorbents in our previous work [2], the adsorption capacities of micrometer-scale CS-MCM and CS/PAA-MCM were improved evidently, which was resultant from the decrease of the particle size and the increase of the surface area.…”

Section: Effects Of Initial Solution Ph On Cu(ii) Adsorptionmentioning

confidence: 68%

Preparation of chitosan/poly(acrylic acid) magnetic composite microspheres and applications in the removal of copper(II) ions from aqueous solutions

Yan

Yang

et al. 2012

Journal of Hazardous Materials

268

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Section: Effects Of Initial Solution Ph On Cu(ii) Adsorptionmentioning

confidence: 68%

Preparation of chitosan/poly(acrylic acid) magnetic composite microspheres and applications in the removal of copper(II) ions from aqueous solutions

Yan

Yang

et al. 2012

Journal of Hazardous Materials

268

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“…The produced biomass was filtered and then dried at 60 C for 15 hr. 21,23,24 The dried biomass samples were completely powdered, and the SEM and FTIR ana-…”

Section: Preparation Of Aspergillus Terreus Biomassmentioning

confidence: 99%

The sorption of cationic and anionic heavy metal species on the biosorbent of Aspergillus terreus: Isotherm, kinetics studies

Shokoohi

Salari

Mahmoudi

et al. 2019

Env Prog and Sustain Energy

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In this study, the capacity of Aspergillus terreus fungus biomass to remove Cr (VI) and Cd from aqueous solution was investigated. The present experimental study employed the shake flask method to cultivate fungal biomass. For the preparation of adsorbent, after inoculation of Aspergillus terreus in PDA medium, it was placed on a shaker at 150 rpm, at 25°C for 4 days. After separation of living biomass, it was boiled in a 0.5% NaOH solution. The ability of the biomass to remove of Cr (VI) and Cd from aqueous solution was examined under conditions including initial concentrations of (20–120 mg/L); pH of 3, 5, 7, and 9; contact times of 15–120 min; and the adsorbent doses of 0.1, 0.2, 0.5, 1, and 2 g. The concentration of the heavy metals was determined by an atomic absorption device. The results showed that in the optimum conditions of the input variables; contact time of 90 min, pH of 7, the initial metal concentration of 20 mg/L, and the adsorbent dose of 1 g, the removal efficiency of Cd and Cr (VI) was 94 and 89%, respectively. The processes of Cd and Cr (VI) adsorption were successfully described by Freundlich isotherm with R2 = 0.9463 and R2 = 0.9949, respectively, and well‐followed pseudo‐first‐order kinetic with R2 = 0.9935 and R2 = 0.9718, respectively. Due to the high adsorption capacity of this biomass in removing metals in comparison to other adsorbents, it can be proposed as a suitable adsorbent in treatment processes.

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“…41 In addition, the experimental adsorption data were tted according to different adsorption isotherms; Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherms. More analysis of the experimental data was performed using four common kinetics model equations to nd the best-t model for the obtained data.…”

Section: Metal Uptakementioning

confidence: 99%

Preparation and characterization of chitosan/silver nanoparticle/copper nanoparticle/carbon nanotube multifunctional nano-composite for water treatment: heavy metals removal; kinetics, isotherms and competitive studies

2015

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In this work, a multifunctional nanocomposite of chitosan, silver nanoparticles (Ag NPs), copper nanoparticles (Cu NPs) and carbon nanotubes (CNTs) has been successfully prepared. The structure has been confirmed using X-ray diffraction, scanning and transmittance electron microscopes. CNTs, Ag NPs and Cu NPs are distributed homogeneously inside the polymer matrix. The adsorption efficiency of chitosan for Cu(II), Cd(II) and Pb(II) reached 60% using 5 g L À1 adsorbent dose while for the multifunctional composite, it reached 100% adsorption efficiency with a reduction of the amount of adsorbent to 1 g L À1 . For the multifunctional composite, 10 min is enough for almost complete removal of metal ions from the solution while for chitosan the efficiency is rather lower. The adsorption process fitted to the pseudo-second order kinetic model and Langmuir isotherm in the linear form in case of chitosan while in case of the multifunctional composite, it fitted to the pseudo-second order kinetic model and Langmuir and Freundlich models in the non-linear forms. The maximum amount adsorbed (Q max ) was found to be directly related to and fitted well with the electrode potential values of metal ions in case of chitosan while for the multifunctional composite, the ionic radius is the most dependent parameter. The multifunctional composite was found to be regenerated effectively using EDTA solution for up to five efficient cycles of adsorption/desorption processes.

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Experimental design for the optimization of copper biosorption from aqueous solution by Aspergillus terreus

Cited by 43 publications

References 19 publications

Preparation of chitosan/poly(acrylic acid) magnetic composite microspheres and applications in the removal of copper(II) ions from aqueous solutions

Preparation of chitosan/poly(acrylic acid) magnetic composite microspheres and applications in the removal of copper(II) ions from aqueous solutions

The sorption of cationic and anionic heavy metal species on the biosorbent of Aspergillus terreus: Isotherm, kinetics studies

Preparation and characterization of chitosan/silver nanoparticle/copper nanoparticle/carbon nanotube multifunctional nano-composite for water treatment: heavy metals removal; kinetics, isotherms and competitive studies

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