Application of the Fe3O4-chitosan nano-adsorbent for the adsorption of metronidazole from wastewater: Optimization, kinetic, thermodynamic and equilibrium studies

Asgari, Esrafil; Sheikhmohammadi, Amir; Yeganeh, Jaber

doi:10.1016/j.ijbiomac.2020.07.188

Cited by 88 publications

(22 citation statements)

References 56 publications

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“…Our data are similar with those reported by Adel Niaei and Rostamizadeh (2020) [ 46 ], who performed the adsorption of metformin on zeolites and showed that the removal percentage improves from 61.1% to more than 95% by increasing the amount of adsorbent from 0.5 g/L to 1.1 g/L. An adsorbent dosage of 2 g/L was found to be adequate also for the retention of metronidazole from wastewater [ 47 ]. Based on these aspects, the middle biosorbent dose (2 g/L) was considered a good compromise between the consumption of adsorbent material and the removal of EL from tested solutions.…”

Section: Resultssupporting

confidence: 90%

Encapsulation of Saccharomyces pastorianus Residual Biomass in Calcium Alginate Matrix with Insights in Ethacridine Lactate Biosorption

et al. 2022

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Pharmaceuticals are recognized as emerging water microcontaminants that have been reported in several aquatic environments worldwide; therefore, the elimination of these pollutants is a global challenge. This study aimed to develop a biosorbent based on Saccharomyces pastorianus residual biomass encapsulated in a calcium alginate matrix and to evaluate its biosorption performance to remove Ethacridine Lactate (EL) from aqueous solutions. Firstly, the synthesis and characterization of biosorbent has been carried out. Then, the impact of main parameters on biosorption process were investigated by batch experiments. Finally, the kinetics behavior and equilibrium isotherms were evaluated. The resulted beads have an irregular and elongated shape with about 1.89 mm ± 0.13 mm in size with a homogeneous structure. The best removal efficiency for EL of over 85% was obtained at acidic pH 2 and 25 °C for 50 mg/L initial concentration and 2 g/L biosorbent dose. The pseudo-second-order and intraparticle diffusion kinetics describe the biosorption process. The maximum calculated biosorption capacity was 21.39 mg/g similar to that recorded experimentally. The equilibrium biosorption data were a good fit for Freundlich and Dubinin–Radushkevich isotherms. Our findings reveal that the low cost and eco-friendly obtained biosorbent can be easily synthesized and suitable to remove Ethacridine Lactate from water matrices.

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Section: Resultssupporting

confidence: 90%

Encapsulation of Saccharomyces pastorianus Residual Biomass in Calcium Alginate Matrix with Insights in Ethacridine Lactate Biosorption

et al. 2022

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“…However, our results did not show the chitosan layer as seen by Akin et al [19], so the chitosan probably contributed. In another study [21], after the dissolution of Another way of analyzing the surface of nanoparticles is from zeta potential measurements. The graph in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Knowing the reaction mechanism during the functionalization process is important to understand the potential future reactions of the functionalized nanoparticles. Several studies present the reaction mechanism of the functionalization of Fe 3 O 4 nanoparticles with chitosan using glutaraldehyde [18] and sodium polyphosphate [19,20] as the new cross-linkers and other forms of chitosan functionalization on Fe 3 O 4 nanoparticles [21,22]. Due to the lack of information regarding the use of NaOH as a cross-linking agent in the functionalization mechanism, this study aimed to synthesize and characterize Fe 3 O 4 nanoparticles functionalized with APTMS and later with chitosan.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of Fe3O4-NH2 and Fe3O4-NH2-chitosan nanoparticles

2021

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Fe 3 O 4 nanoparticles were synthesized and functionalized with (3-aminopropyl) trimethoxysilane (APTMS) and chitosan, forming Fe 3 O 4 -NH 2 and Fe 3 O 4 -NH 2 -chitosan nanoparticles. The Fe 3 O 4 nanoparticles were synthesized by a co-precipitation method and functionalization was performed in further stages. The nanoparticles were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), zeta potential, and transmission electron microscopy (TEM). The results of XRD showed that magnetite did not experience an oxidation reaction. The functionalization of the surface of Fe 3 O 4 nanoparticles was confirmed by FTIR and zeta potential measurements. The TEM results showed a thin layer around Fe 3 O 4 nanoparticles due to the functionalization with the APTMS. The later functionalization by chitosan contributed to the agglomeration of nanoparticles. Functionalization provided the nanoparticles better colloidal stability mainly for a pH below 7 and this improvement was related to the protection and new functional groups from the APTMS and chitosan.

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“…14,15 This versatile and cost-effective method is usually characterized by low energy consumption with a limited use or production of harmful products and auxiliary materials. 16,17 Various adsorbents have been utilized for MNZ adsorption, among which pristine and modified sepiolite, 18 microorganism-activated carbon, 19 carbon-based substances, 19,20 a Department of Civil and Environment Engineering, Shahrood University of urea and melamine-modified MOF MIL-101-(Cr), 4 carbon xerogel/ graphene hybrids, 21 Fe 3 O 4 /cellulose nanocomposites, 22 the Fe 3 O 4chitosan nano-adsorbent 23 and the PPY-PANi copolymer 24 can be mentioned.…”

Section: Introductionmentioning

confidence: 99%

Quick removal of metronidazole from aqueous solutions using metal–organic frameworks

et al. 2022

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Application of the Fe3O4-chitosan nano-adsorbent for the adsorption of metronidazole from wastewater: Optimization, kinetic, thermodynamic and equilibrium studies

Cited by 88 publications

References 56 publications

Encapsulation of Saccharomyces pastorianus Residual Biomass in Calcium Alginate Matrix with Insights in Ethacridine Lactate Biosorption

Encapsulation of Saccharomyces pastorianus Residual Biomass in Calcium Alginate Matrix with Insights in Ethacridine Lactate Biosorption

Synthesis and characterization of Fe3O4-NH2 and Fe3O4-NH2-chitosan nanoparticles

Quick removal of metronidazole from aqueous solutions using metal–organic frameworks

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