Algae based green biocomposites for uranium removal from wastewater: Kinetic, equilibrium and thermodynamic studies

Smječanin, Narcisa; Bužo, Dženana; Mašić, Ermin; Nuhanović, Mirza; Sulejmanović, Jasmina; Azhar, Ofaira; Sher, Farooq

doi:10.1016/j.matchemphys.2022.125998

Cited by 43 publications

(15 citation statements)

References 54 publications

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“…3) showed also that removal of uranium was inversely proportional to the algal dose. In this regard also, Smječanin et al (2022) reported the reduction in the adsorption capacity by the increase of the biocomposite mass. This could be due to the formation of biomass aggregates (at high doses) that affect the active surface area of the biosorbent and may led to reduced active binding sites of the applied biosorbent (Sarı and Tuzen 2008;Smječanin et al 2022).…”

Section: Effect Of Algal Biomass Dosagementioning

confidence: 88%

“…Uranium is a radioactive element that can be found in different environmental sources including water, soil, and air (Gok and Aytas 2009 ; Monti et al 2019 ; Yue et al 2021 ; Gandhi et al 2022 ; Smječanin et al 2022 ). The importance of this element in many industries like electricity production and medical applications increased the mining and milling processes to acquire it in a considerable amount (Awan and Khan 2015 ; Yue et al 2021 ).…”

Section: Introductionmentioning

confidence: 99%

“…The biosorption process can be defined as the capability of biological materials to uptake metal ions from wastes through the chemical and physical removal of metal ions. Remediation of heavy metals and toxic pollutants using biological materials like algal biomass is a reliable, flexible, cheap, and friendship method compared with the conventional ways (Gavrilescu et al 2009 ; Smječanin et al 2022 ). The efficiency of metal removal using algal biomass is affected by several factors like algal species, metal ion charges, and components of the heavy metal solution.…”

Section: Introductionmentioning

confidence: 99%

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Biosorption of uranium by immobilized Nostoc sp. and Scenedesmus sp.: kinetic and equilibrium modeling

Ismaiel

El-Ayouty

Abdelaal

et al. 2022

Environ Sci Pollut Res

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Different activities related to uranium mining and nuclear industry may have a negative impact on the environment. Bioremediation of nuclear pollutants using microorganisms is an effective, safe, and economic method. The present study compared the uranium biosorption efficiency of two immobilized algae: Nostoc sp. (cyanophyte) and Scenedesmus sp. (chlorophyte). Effects of metal concentration, contact time, pH, and biosorbent dosage were also studied. The maximum biosorption capacity (60%) by Nostoc sp. was obtained at 300 mg/l uranium solution, 60 min, pH 4.5, and 4.2 g/l algal dosage, whereas Scenedesmus sp. maximally absorbed uranium (65 %) at 150 mg/l uranium solution, 40 min, pH 4.5, and 5.6 g/l of algal dosage. The interaction of metal ions as Na2SO4, FeCl3, CuCl2, NiCl2, CoCl2, CdCl2, and AlCl3 did not support the uranium biosorption by algae. The obtained data was adapted to the linearized form of the Langmuir isotherm model. The experimental qmax values were 130 and 75 mg/g for Nostoc sp. and Scenedesmus sp., respectively. Moreover, the pseudo-second-order kinetic model was more applicable, as the calculated parameters were close to the experimental data. The biosorbents were also characterized by Fourier-transform infrared spectroscopy (ATR-FTIR), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM) analyses. The results suggest the applicability of algae, in their immobilized form, for recovery and biosorption of uranium from aqueous solution.

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Section: Effect Of Algal Biomass Dosagementioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biosorption of uranium by immobilized Nostoc sp. and Scenedesmus sp.: kinetic and equilibrium modeling

Ismaiel

El-Ayouty

Abdelaal

et al. 2022

Environ Sci Pollut Res

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“…The samples were sealed in aluminum pans with a perforated lid. As standard in DSC, along with the sample pan, another similar empty pan was also used 31,32 . The temperature was increased from 25 to 275°C in the first run and then maintained for 5 min.…”

Section: Methodsmentioning

confidence: 99%

“…As standard in DSC, along with the sample pan, another similar empty pan was also used. 31,32 The temperature was increased from 25 to 275 C in the first run and then maintained for 5 min. Then the temperature was lowered to À100 C and maintained for 5 min.…”

Section: Differential Scanning Calorimetermentioning

confidence: 99%

Regulating the structure of thermoplastic polyurethane elastomers with a diol chain extender to strength performance

et al. 2023

J of Applied Polymer Sci

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The structural defects of thermoplastic polyurethane elastomer (TPU) caused by the uneven distribution of hard segments limiting their potential application in special industrial fields such as aerospace or defense equipment. Optimizing the TPUs' structure is a useful method to adjustable uneven distribution of hard segments and enhance the performance of TPUs. In this work, a chain extender (BMB) embedded in carbamate‐derive units was successfully synthesized by 4,4′‐diphenylmethane diisocyanate (MDI) and 1,4‐butanediol (BDO). Using BMB and as chain extender, a modified BMB‐TPU was prepared, and its properties were systematically evaluated. Compared with conventional thermoplastic polyurethane elastomer (BDO‐TPU), BMB‐TPU had a regular structure with uniform hard segments, narrower molecular weight distribution and stronger intra/inter‐chain hydrogen bonding interactions, and thus better microphase separation. The BMB‐TPU exhibited an excellent tensile strength of 35 MPa, 46% higher than 24 MPa for the control BDO‐TPU. Moreover, the heat resistance of BMB‐TPU was also reinforced compared to BDO‐TPU, with an increase of 7.2°C for the degradation temperature of 5% loss and 9.6°C for the viscous flow transition temperature. We believe our paradigm can provide a feasible guide for designing high‐performance TPUs.

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Preparation of amine or carboxyl groups modified cellulose beads for removal of uranium (VI) ions from aqueous solutions

Bayramoglu,

Tilki,

Arica

2024

Cellulose

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In the present study, cellulose beads were prepared using the phase inversion method and then activated with epichlorohydrin. The epoxy groups of the activated beads were modified with Nα,Nα-bis(carboxymethyl)-L-lysine hydrate (CML), and tetraethylenepentamine (TEPA) ligands. These modified beads, coded as cellulose-COOH and cellulose-NH2, respectively, were used to remove of uranium (VI) ions from aqueous medium. The prepared adsorbents were characterized using FTIR, SEM, zeta-potential, and analytical methods; the performance of both the modified beads for the removal of uranium (VI) ions was optimized using different operational parameters in a batch system. The amount of adsorbed uranium ions on cellulose-COOH and cellulose-NH2 beads was 462.9 ± 13.7 and 127.4 ± 5.1 mg/g, respectively. The results are acceptable regarding the equilibrium kinetics for the adsorption of uranium (VI) ions, which followed the second-order kinetic model. The prepared activated cellulose beads could be utilized in many technological applications by making appropriate modifications in the reactive epoxy groups of cellulose.

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Algae based green biocomposites for uranium removal from wastewater: Kinetic, equilibrium and thermodynamic studies

Cited by 43 publications

References 54 publications

Biosorption of uranium by immobilized Nostoc sp. and Scenedesmus sp.: kinetic and equilibrium modeling

Biosorption of uranium by immobilized Nostoc sp. and Scenedesmus sp.: kinetic and equilibrium modeling

Regulating the structure of thermoplastic polyurethane elastomers with a diol chain extender to strength performance

Preparation of amine or carboxyl groups modified cellulose beads for removal of uranium (VI) ions from aqueous solutions

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