Effective removal of levofloxacin drug and Cr(VI) from water by a composed nanobiosorbent of vanadium pentoxide@chitosan@MOFs

Mahmoud, Mohamed E.; Amira, Mohamed F.; Azab, Mayar M.H.M.; Abdelfattah, Amir M.

doi:10.1016/j.ijbiomac.2021.08.092

Cited by 47 publications

(10 citation statements)

References 89 publications

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“…The main mechanisms are electrostatic attraction, reduction, and complexation (Li et al, 2021). A novel nano-biosorbent was constructed by encapsulating a nanoscale metal-organic framework (Cu-TMA) in a chitosan matrix coated with vanadium pentoxide, and this material was found to possess excellent adsorption and a removal capacity of 92.43%-96.95% toward Cr(VI) from wastewater (Mahmoud et al, 2021). Palladium nanoparticles 3.00-25.00 nm in size were synthesized for the reduction of Cr(VI).…”

Section: Remediation Of Cr Contamination 41 Physical Remediationmentioning

confidence: 99%

Toxicity mechanisms and remediation strategies for chromium exposure in the environment

Yan

Ying-jun

Xue

et al. 2023

Front. Environ. Sci.

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Chromium (Cr) is the seventh most abundant chemical element in the Earth’s crust, and Cr(III) and Cr(VI) are common stable valence states of Cr. Several Cr-containing substances, such as FeOCr2O3 and stainless-steel products, exist in nature and in life. However, Cr(VI) is toxic to soil, microorganisms, and plants and poses a serious threat to human health through direct and indirect exposure. By collecting published journal literature, we found that Cr(VI) can cause acute and chronic toxicity in organisms and has carcinogenic effects, and the mechanisms causing these toxicity include endoplasmic reticulum stress, autophagy and apoptosis. However, the relationship between these mechanisms remains unclear. Many methods have been researched to purify chromium, but each of these methods has its own advantages and disadvantages. Therefore, this review summarizes the hazards of chromium and the mechanisms of chromium toxicity after entering cells and provides a number of methods for chromium contamination management, providing a direction for the next step in chromium toxicology and contamination decontamination research.

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Section: Remediation Of Cr Contamination 41 Physical Remediationmentioning

confidence: 99%

Toxicity mechanisms and remediation strategies for chromium exposure in the environment

Yan

Ying-jun

Xue

et al. 2023

Front. Environ. Sci.

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“…It was also concluded that the extraction values of 5, 10, and 15 mg/L Cr(VI) concentrations from the evaluated water matrices provided the order descending order of tap water > seawater > wastewater with the highest (%) extraction in the range from 98.44 to 98.86%. Finally, the removal performance and efficiency of Cr(V) by NASs were also compared versus other previously adsorbents as listed in Table 8 [69][70][71][72][73][74][75][76].…”

Section: Potential Application Of Nass In Real Water Treatment Of Cr(vi)mentioning

confidence: 99%

Effective removal of hexavalent chromium from water by sustainable nano-scaled waste avocado seeds: adsorption isotherm, thermodynamics, kinetics, and error function

Mahmoud

El‐Said

Ibrahim

et al. 2022

Biomass Conv. Bioref.

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In the current investigation, an efficient low-cost nano-scaled material was prepared from waste avocado seeds (NASs) and employed as a sustainable nanosorbent for removal of hexavalent chromium ions. The adsorption and surface characteristics with respect to the availability of functional groups, basic component elements, and structural properties of NASs were achieved by different techniques. Analysis of NASs referred to the presence of carbon and oxygen contents providing 97.21%. The NASs particles were homogenously identified and ranged between 18.68 and 19.05 nm. The impact of various affecting adsorption parameters on hexavalent chromium ions removal was elaborated and optimized at pH 2.0, NASs dose 10 mg, contact time 30 min, and temperature 25 °C by the batch adsorption assay. Fifteen linear and nonlinear modeling tests were applied to evaluate the adsorption isotherms and arranged in the following fitting order: Tempkin < BET < Dubinin-Radushkevich < Generalized < Halsey ˂ Flory–Huggins < Freundlich < Harkins–Jura ˂ Langmuir for linear formulas and Weber-van Vliet < Langmuir < Generalized < Radke–Prausnitz (II) < Radke–Prausnitz (III) < Fritz-Schlunder IV < Baudu < Multilayer < Fritz-Schlunder V < Toth for nonlinear formulas with 2 to 5 parameters. Linear and nonlinear pseudo-second-order models, intraparticle diffusion, and Elovich models were also scrutinized, and both pore diffusion and film were similarly involved in the rate-limiting step. The values of ΔS° (0.21 kJ/mol), ΔH° (− 41.02 kJ/mol) and ΔG° (− 28.30 to − 19.97 kJ/mol) at high concentration of hexavalent chromium (50 mg L−1) and a temperature range of 20–60 °C reflected the disordering, spontaneously exothermic adsorption process. The activation energy (Ea) was also confirmed to include the diffusion process at the activation energy in the rate-limiting step. The potential application of NASs in hexavalent chromium removal from wastewater, seawater, and tap water as real aqueous matrices referred to excellent percentage removal values in the range from 98.44 to 98.86%. Based on the outlined results, one can deduce that excellent performance and efficiency for removal of high hexavalent chromium concentration at high temperature, low nanosorbent mass, and low pH from different aqueous matrices were accomplished by the evaluated NAS nanosorbent. Accordingly, the investigated NAS nanosorbent is recommended to apply in high stress industrial and wastewater treatment plants.

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“…It not only uses fewer chemicals and solvents but also has a wider range of concentrations, making it a lot more efficient and an environmentally friendly solution. Thus, a variety of micro/nanostructures were considered suitable adsorbents for the efficient removal of levofloxacin residuals from water, as either single phases or composites. − Biopolymer-based composites have lately been employed often as an environmentally benign adsorbent to remove water pollutants due to their biodegradability, availability, fair cost, and low toxicity to biological systems. , Tragacanth gum, ghatti gum, xanthan gum, karaya gum, and guar gum have all been employed in the fabrication of natural polymer hydrogels. These natural polymers could capture contaminants effectively in a three-dimensional (3D) network.…”

Section: Introductionmentioning

confidence: 99%

Arabic Gum-Grafted-Hydrolyzed Polyacrylonitrile@ZnFe₂O₄ as a Magnetic Adsorbent for Remediation of Levofloxacin Antibiotic from Aqueous Solutions

et al. 2023

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The Arabic gum-grafted-hydrolyzed polyacrylonitrile/ZnFe 2 O 4 (AG-g-HPAN@ZnFe 2 O 4 ) as organic/inorganic adsorbent was obtained in three steps using grafted PAN onto Arabic gum in the presence of ZnFe 2 O 4 magnetic nanoparticles and then hydrolysis by alkaline solution. Fourier transform infrared (FT-IR), energy-dispersive X-ray analysis (EDX), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), and the Brunauer−Emmett−Teller (BET) analysis analyses were used to characterize the chemical, morphological, thermal, magnetic, and textural properties of the hydrogel nanocomposite. The obtained result demonstrated that the AG-g-HPAN@ZnFe 2 O 4 adsorbent showed acceptable thermal stability with 58% char yields and superparamagnetic property with magnetic saturation (Ms) of 24 emu g −1 . The XRD pattern showed that the semicrystalline structure with the presence of ZnFe 2 O 4 has distinct peaks which displayed that the addition of zinc ferrite nanospheres to amorphous AG-g-HPAN increased its crystallinity. The AG-g-HPAN@ZnFe 2 O 4 surface morphology exhibits uniform dispersion of zinc ferrite nanospheres throughout the smooth surface of the hydrogel matrix, and its BET surface area was measured at 6.86 m 2 /g, which was higher than that of AG-g-HPAN as a result of zinc ferrite nanosphere incorporation. The adsorption effectiveness of AG-g-HPAN@ZnFe 2 O 4 for eliminating a quinolone antibiotic (levofloxacin) from aqueous solutions was investigated. The effectiveness of adsorption was assessed under several experimental conditions, including solution pH (2−10), adsorbent dose (0.0015−0.02 g) contact duration (10−60 min), and initial concentration (50−500 mg/L). The maximum adsorption capacity (Q max ) of the produced adsorbent for levofloxacin was found to be 1428.57 mg/g (at 298 k), and the experimental adsorption data were well explained by the Freundlich isotherm model. The pseudo-second-order model satisfactorily described the adsorption kinetic data. The levofloxacin was mostly adsorbed onto the AG-g-HPAN@ZnFe 2 O 4 adsorbent via electrostatic contact and hydrogen bonding. Adsorption−desorption studies demonstrated that the adsorbent could be efficiently recovered and reused after four consecutive runs with no significant loss in adsorption performance.

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Effective removal of levofloxacin drug and Cr(VI) from water by a composed nanobiosorbent of vanadium pentoxide@chitosan@MOFs

Cited by 47 publications

References 89 publications

Toxicity mechanisms and remediation strategies for chromium exposure in the environment

Toxicity mechanisms and remediation strategies for chromium exposure in the environment

Effective removal of hexavalent chromium from water by sustainable nano-scaled waste avocado seeds: adsorption isotherm, thermodynamics, kinetics, and error function

Arabic Gum-Grafted-Hydrolyzed Polyacrylonitrile@ZnFe₂O₄ as a Magnetic Adsorbent for Remediation of Levofloxacin Antibiotic from Aqueous Solutions

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Effective removal of levofloxacin drug and Cr(VI) from water by a composed nanobiosorbent of vanadium pentoxide@chitosan@MOFs

Cited by 47 publications

References 89 publications

Toxicity mechanisms and remediation strategies for chromium exposure in the environment

Toxicity mechanisms and remediation strategies for chromium exposure in the environment

Effective removal of hexavalent chromium from water by sustainable nano-scaled waste avocado seeds: adsorption isotherm, thermodynamics, kinetics, and error function

Arabic Gum-Grafted-Hydrolyzed Polyacrylonitrile@ZnFe2O4 as a Magnetic Adsorbent for Remediation of Levofloxacin Antibiotic from Aqueous Solutions

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Product

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Arabic Gum-Grafted-Hydrolyzed Polyacrylonitrile@ZnFe₂O₄ as a Magnetic Adsorbent for Remediation of Levofloxacin Antibiotic from Aqueous Solutions