Mesoporous metal organic frameworks functionalized with the amino acids as advanced sorbents for the removal of bacterial endotoxins from water: Optimization, regression and kinetic models

Rasuli, Leila; Dehghani, Mohammad Hadi; Alimohammadi, Mahmood; Yaghmaeian, Kamyar; Rastkari, Noushin; Salari, Mehdi

doi:10.1016/j.molliq.2021.116801

Cited by 20 publications

(9 citation statements)

References 63 publications

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“…coli were best fitted to Freundlich linear and nonlinear models shown in Figure a–f, which corresponded to the higher R 2 values of the Freundlich model than the Langmuir model shown in Table . Literature review shows that other studies also found the same results as this study, that is, the results of the adsorption linear model agreed to those of the nonlinear model, and the equilibrium isotherm parameters of both linear and nonlinear models had close values. − As a result, both linear and nonlinear adsorption models are necessary to plot and calculate all isotherm parameters for confirming which adsorption model is the best-fit model to the actual experiment values to avoid errors. , …”

Section: Resultssupporting

confidence: 80%

Modified Alginate Beads with Ethanol Extraction of Cratoxylum formosum and Polygonum odoratum for Antibacterial Activities

Ngamsurach

Praipipat

2021

ACS Omega

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Bacteria contaminations in water are concerned as environmental effects including human health, so water treatment is required before use. Although using extracted plant is interesting because of their good chemical compounds for bacterial inhibitions, no study has applied the extracted plant in bead materials for disinfection in wastewater. The current research attempted to extract Cratoxylum formosum and Polygonum odoratum for the synthesis of C. formosum beads (CFB) and P. odoratum beads (POB), and their antibacterial efficiencies were investigated by agar diffusion tests, antibacterial batch tests, adsorption isotherm and kinetics, and material reusability. C. formosum and P. odoratum leaves were ethanol-extracted, and their bead materials (CFB and POB) were synthesized. Furthermore, their characterizations of surface area, chemical compositions, and chemical functional groups were investigated. For field emission scanning electron microscopy and focused ion beam (FESEM-FIB) analysis, CFB and POB had spherical shapes with coarse surfaces. Energy-dispersive X-ray spectrometry (EDX) analysis of CFB and POB illustrated five main chemical compositions, which were carbon (C), oxygen (O), calcium (Ca), chlorine (Cl), and sodium (Na), whereas Fourier transform infrared (FTIR) spectroscopy analysis identified seven main chemical functional groups, which were O−H, C−H, CO, CC, N−H, C−O, and C−Cl. Agar diffusion tests confirmed the abilities of CFB and POB to inhibit both Staphylococcus aureus and Escherichia coli, and batch experiments examined high antibacterial efficiencies of CFB of almost 100% on both bacterial types. The adsorption isotherm of CFB corresponded to the Freundlich model, which is related to the physiochemical adsorption process with multilayer or heterogeneous adsorption, and the adsorption kinetics of CFB was correlated to the pseudo-second-order kinetic model, which involved chemisorption relating to physiochemical interaction. Moreover, the desorption experiment confirmed the reusability of CFB. Therefore, CFB is a potential material to possibly apply for disinfection of wastewater.

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Section: Resultssupporting

confidence: 80%

Modified Alginate Beads with Ethanol Extraction of Cratoxylum formosum and Polygonum odoratum for Antibacterial Activities

Ngamsurach

Praipipat

2021

ACS Omega

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“…A heterogeneous surface with adsorption sites with the same bond energy is studied in the Temkin isotherm model. A linear reduction in adsorption heat occurs in this isotherm due to the contact effects of the adsorbent and adsorbate on each other 31 . The following equation expresses the non-linear Temkin models: B is the isotherm constant (J/mol).…”

Section: Methodsmentioning

confidence: 99%

“…Adsorption is not monolayer in the Freundlich isotherm, which is formulated for equilibrium on inhomogeneous surfaces 31 .…”

Section: Methodsmentioning

confidence: 99%

Acid red 18 removal from aqueous solution by nanocrystalline granular ferric hydroxide (GFH); optimization by response surface methodology & genetic-algorithm

Hamidi

Dehghani

Kasraee

et al. 2022

Sci Rep

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The need for fresh water is more than before by population growth, and industrial development have affected the quality of water supplies, one of the important reason for water contamination is synthetic dyes and their extensive use in industries. Adsorption has been considered as a common methods for dye removal from waters. In this study, Acid Red18 removal in batch mode by using Granular Ferric Hydroxide (GFH) was investigated. The GFH characterized by XRD, FESEM and FTIR analysis. Experiments were designed using RSM-CCD method. The maximum removal efficiency was obtained 78.59% at pH = 5, GFH dosage = 2 g/l, AR18 concentration = 77.5 mg/l and 85 min of contact time. Optimization with RSM and Genetic Algorithm carried out and is similar together. The non-linear adsorption Isotherm and kinetic fitted with Freundlich (R2 = 0.978) and pseudo-second-order (R2 = 0.989) models, respectively. Thermodynamic studies showed that the AR18 adsorption is endothermic process and GFH nature was found spontaneous.

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“…Zero-point charges (pH pzc ) were determined by the pH drift method . SG-PEI (5 mg) was added to 20 mL 0.01 M NaCl solution, which has been adjusted to pH values of 3 to 9.…”

Section: Methodsmentioning

confidence: 99%

Silica Gel Functionalized with Polyethylenimine as Advanced Sorbents for the Removal of Endotoxin from Gelatin

Zhang

Wang

et al. 2023

ACS Appl. Polym. Mater.

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Gelatin is one of the essential materials for tissue engineering for its unique physicochemical properties. The endotoxin in gelatin needs to be controlled at a reasonable level to guarantee biosafety when applied to the human body. However, the isothermal titration calorimetry results showed specific interactions between gelatin and endotoxin, suggesting the difficulties of removing endotoxin from gelatin in mild conditions. In this work, a polyethyleneimine-grafted silica gel adsorbent for endotoxin was designed and prepared. Results showed that the prepared endotoxin adsorbent could remove endotoxin from gelatin without significantly changing the structures and properties of gelatin.

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Mesoporous metal organic frameworks functionalized with the amino acids as advanced sorbents for the removal of bacterial endotoxins from water: Optimization, regression and kinetic models

Cited by 20 publications

References 63 publications

Modified Alginate Beads with Ethanol Extraction of Cratoxylum formosum and Polygonum odoratum for Antibacterial Activities

Modified Alginate Beads with Ethanol Extraction of Cratoxylum formosum and Polygonum odoratum for Antibacterial Activities

Acid red 18 removal from aqueous solution by nanocrystalline granular ferric hydroxide (GFH); optimization by response surface methodology & genetic-algorithm

Silica Gel Functionalized with Polyethylenimine as Advanced Sorbents for the Removal of Endotoxin from Gelatin

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