Biosorption of Cu(II) ions using sericin cross-linked with polyethylene glycol-diglycidyl ether

Marques, Geovana Silva; Dusi, Giovana Gonçalves; Drago, Fillipe; Gimenes, Marcelino Luiz; Silva, Vitor Renan da

doi:10.5004/dwt.2022.28785

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…Due to electrostatic attraction and the abundance of active sites on the material, metal adsorption kinetics accelerates during the initial phase of interaction between the adsorbent and adsorbates [ 71 , 72 , 77 ]. The surface of adsorption of adsorbents properties of adsorbents and the model of adsorption isotherms used to examine how adsorbents and adsorbate adsorb similarly [ 78 , 79 ].…”

Section: Resultsmentioning

confidence: 99%

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Copper biosorption by Bacillus pumilus OQ931870 and Bacillus subtilis OQ931871 isolated from Wadi Nakheil, Red Sea, Egypt

Danial,

Dardir

2023

Microb Cell Fact

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Background Despite being necessary, copper is a toxic heavy metal that, at high concentrations, harms the life system. The parameters that affect the bioreduction and biosorption of copper are highly copper-resistant bacteria. Results In this work, the ability of the bacterial biomass, isolated from black shale, Wadi Nakheil, Red Sea, Egypt, for Cu2+ attachment, was investigated. Two Cu2+ resistance Bacillus species were isolated; Bacillus pumilus OQ931870 and Bacillus subtilis OQ931871. The most tolerant bacterial isolate to Cu2+ was B. pumilus. Different factors on Cu2+ biosorption were analyzed to estimate the maximum conditions for Cu biosorption. The qmax for Cu2+ by B. pumilus and B. subtilis determined from the Langmuir adsorption isotherm was 11.876 and 19.88 mg. g−1, respectively. According to r2, the biosorption equilibrium isotherms close-fitting with Langmuir and Freundlich model isotherm. Temkin isotherm fitted better to the equilibrium data of B. pumilus and B. subtilis adsorption. Additionally, the Dubinin-Radushkevich (D-R) isotherm suggested that adsorption mechanism of Cu2+ is predominately physisorption. Conclusion Therefore, the present work indicated that the biomass of two bacterial strains is an effective adsorbent for Cu2+ removal from aqueous solutions.

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Section: Resultsmentioning

confidence: 99%

“…For Cu 2+ , the biomass b values for B1 and B2 are 0.2929 and 0.0649 l. mg −1 , respectively. The Freundlish isotherm's linear form was mentioned elsewhere in a previous study [ 79 , 82 ]. Figure 14 a, b illustrate the linear version of the Freundlich equation for the biosorption of Cu 2+ by B1 and B2 (Fig.…”

Section: Resultsmentioning

confidence: 99%

Copper biosorption by Bacillus pumilus OQ931870 and Bacillus subtilis OQ931871 isolated from Wadi Nakheil, Red Sea, Egypt

Danial,

Dardir

2023

Microb Cell Fact

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Microwave assisted grafting kinetic of alginate/sericin with acrylic acid-co-acrylamide encapsulation of NPK fertilizer and assessment of release characteristics

Priya,

Roy,

Sailaja

et al. 2024

Polym. Bull.

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Raw Eggshell as an Adsorbent for Copper Ions Biosorption—Equilibrium, Kinetic, Thermodynamic and Process Optimization Studies

Markovic

Gorgievski

Štrbac

et al. 2023

Metals

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The study on the biosorption of copper ions using raw eggshells as an adsorbent is presented in this paper. The influence of different process parameters, such as: initial pH value of the solution, initial Cu2+ ions concentration, initial mass of the adsorbent, and stirring rate, on the biosorption capacity was evaluated. The SEM-EDS analysis was performed before and after the biosorption process. SEM micrographs indicate a change in the morphology of the sample after the biosorption process. The obtained EDS spectra indicated that K, Ca, and Mg were possibly exchanged with Cu2+ ions during the biosorption process. The equilibrium analysis showed that the Langmuir isotherm model best describes the experimental data. Four kinetic models were used to analyze the experimental data, and the results revealed that the pseudo-first order kinetic model is the best fit for the analyzed data. Calculated thermodynamic data indicated that the biosorption process is spontaneous, and that copper ions are possibly bound to the surface of the eggshells by chemisorption. The biosorption process was optimized using Response Surface Methodology (RSM) based on the Box-Behnken Design (BBD), with the selected factors: adsorbent mass, initial metal ion concentration, and contact time.

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Biosorption of Cu(II) ions using sericin cross-linked with polyethylene glycol-diglycidyl ether

Cited by 3 publications

References 37 publications

Copper biosorption by Bacillus pumilus OQ931870 and Bacillus subtilis OQ931871 isolated from Wadi Nakheil, Red Sea, Egypt

Copper biosorption by Bacillus pumilus OQ931870 and Bacillus subtilis OQ931871 isolated from Wadi Nakheil, Red Sea, Egypt

Microwave assisted grafting kinetic of alginate/sericin with acrylic acid-co-acrylamide encapsulation of NPK fertilizer and assessment of release characteristics

Raw Eggshell as an Adsorbent for Copper Ions Biosorption—Equilibrium, Kinetic, Thermodynamic and Process Optimization Studies

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