Adsorption of copper ions from aqueous media using montmorillonite-Al2O3 nano-adsorbent incorporated with Fe3O4 for facile separation

Saadat, Fatemeh; Zerafat, Mohammad Mahdi; Foorginezhad, Sahar

doi:10.1007/s11814-020-0651-x

Cited by 12 publications

(7 citation statements)

References 51 publications

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“…After the Al 2 O 3 impregnation, the particle size was shifted to the 10–76.2 nm range with a 26.3 nm mean, and ∼90% of particles showed <44.3 nm size. As can be seen, the incorporation of Al 2 O 3 particles to the MMT surface led to an increase in the overall particle size, which exhibits good compatibility with a previous study …”

Section: Resultssupporting

confidence: 84%

“…Cation exchange was achieved through the dispersion of 50 g/L MMT suspension in 400 mL NaCl (1 mol/L) followed by 3 h stirring at 500 rpm at 70 °C. − Then, the suspension was washed with deionized water and centrifuged several times. Na-MMT was prepared by the dispersion of 10 g/L Na-MMT suspension by an ultrasonic dispersion instrument with 450 W power for 5 min …”

Section: Methodsmentioning

confidence: 99%

“…As can be seen, the incorporation of Al 2 O 3 particles to the MMT surface led to an increase in the overall particle size, which exhibits good compatibility with a previous study. 43 3.2. FTIR Analysis.…”

Section: Preparation Of Superhydrophobic Surfacesmentioning

confidence: 99%

“…The Al 2 O 3 nanoparticles, acting as protrusions on the MMT surface, introduce micro/nanosized roughness. The as-prepared Al 2 O 3 /MMT nanocomposite has been previously synthesized in our study and used for water treatment application after further modifications 43.…”

mentioning

confidence: 99%

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Superhydrophobic Al₂O₃/MMT-PDMS Coated Fabric for Self-Cleaning and Oil–Water Separation Application

Foorginezhad,

Asadnia

2023

Langmuir

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This study introduces a novel superhydrophobic coating applied to the fabric surface through spray coating of the Al 2 O 3 /MMT nanocomposite and PDMS polymer to enhance the surface roughness and reduce the surface tension, respectively. The as-prepared coating exhibits a remarkable superhydrophobic property with a water contact angle (WCA) of ∼174.6° and a water sliding angle (WSA) < 5°. Notably, the fabric demonstrates a self-cleaning property through removing dust and dirt via adhering to water droplets. Moreover, the insignificant loss of WCA (3.2 and 1%) after exposure to alkaline and acidic media for 10 days verifies the promising chemical stability of the coated layer, whereas WCA > 160° after 24 h of immersion in various organic solvents further indicates the layer resistance. Besides, the layer sustains WCA of 174.5, 172.5, and 168.45° after 1 month of air exposure, ultrasonic washing, and 50 cycles of home laundry. The mechanical resistance of the fabric was verified by maintaining a WCA of 158.73° after 200 abrasion cycles. Also, the layer exhibits thermal resistance with <4.1% of WCA loss in the temperature range of −10 to 180 °C. Additionally, the superhydrophobic coating excels in oil–water separation, achieving >99% separation efficiency for various oils. These exceptional properties position the fabric for diverse applications, including protective clothing, outdoor gear, medical textiles, and sportswear, emphasizing its versatility and novelty in the realm of superhydrophobic materials.

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Section: Resultssupporting

confidence: 84%

Section: Methodsmentioning

confidence: 99%

Section: Preparation Of Superhydrophobic Surfacesmentioning

confidence: 99%

mentioning

confidence: 99%

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Superhydrophobic Al₂O₃/MMT-PDMS Coated Fabric for Self-Cleaning and Oil–Water Separation Application

Foorginezhad,

Asadnia

2023

Langmuir

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“…The model terms affecting BC production were found to be X 1 , X 1 2 , and X 2 2 ; temperature ( X 1 ) was the most significant variable among the three independent variables examined. The statistical acceptability of the predictive model was assessed using the coefficient of determination (R 2 ), and a value close to 1 indicates that the experimental response agrees with the predicted response within the designed experimental range [ 30 ]. The R 2 values higher than 0.8 and a difference between R 2 and adjusted R 2 not exceeding 0.2 indicate the reliability of the model [ 31 ].…”

Section: Resultsmentioning

confidence: 99%

Enhanced Production of Bacterial Cellulose from Miscanthus as Sustainable Feedstock through Statistical Optimization of Culture Conditions

Son

Lee

et al. 2022

IJERPH

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Biorefineries are attracting attention as an alternative to the petroleum industry to reduce carbon emissions and achieve sustainable development. In particular, because forests play an important role in potentially reducing greenhouse gas emissions to net zero, alternatives to cellulose produced by plants are required. Bacterial cellulose (BC) can prevent deforestation and has a high potential for use as a biomaterial in various industries such as food, cosmetics, and pharmaceuticals. This study aimed to improve BC production from lignocellulose, a sustainable feedstock, and to optimize the culture conditions for Gluconacetobacter xylinus using Miscanthus hydrolysates as a medium. The productivity of BC was improved using statistical optimization of the major culture parameters which were as follows: temperature, 29 °C; initial pH, 5.1; and sodium alginate concentration, 0.09% (w/v). The predicted and actual values of BC production in the optimal conditions were 14.07 g/L and 14.88 g/L, respectively, confirming that our prediction model was statistically significant. Additionally, BC production using Miscanthus hydrolysates was 1.12-fold higher than in the control group (commercial glucose). Our result indicate that lignocellulose can be used in the BC production processes in the near future.

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Adsorption mechanism and modeling of radionuclides and heavy metals onto ZnO nanoparticles: a review

et al. 2022

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The contamination of environmental waters with heavy metals and radionuclides is increasing because of rapid industrial and population growth. The removal of these contaminants from water via adsorption onto metal nanoparticles is an efficient and promising technique to abate the toxic effects associated with these pollutants. Among metal nanoparticle adsorbents, zinc oxide nanoparticles (ZnONPs) have received tremendous attention owing to their biocompatibility, affordability, long-term stability, surface characteristics, nontoxicity, and powerful antibacterial activity against microbes found in water. In this review, we considered the adsorption of heavy metals and radionuclides onto ZnONPs. We examined the isotherm, kinetic, and thermodynamic modeling of the process as well as the adsorption mechanism to provide significant insights into the interactions between the pollutants and the nanoparticles. The ZnONPs with surface areas (3.93 to 58.0 m2/g) synthesized by different methods exhibited different adsorption capacities (0.30 to 1500 mg/g) for the pollutants. The Langmuir and Freundlich isotherms were most suitable for the adsorption process. The Langmuir separation factor indicated favorable adsorption of all the pollutants on ZnONPs. The pseudo-second-order kinetics presented the best for the adsorption of the adsorbates with regression values in the range of 0.986–1.000. Spontaneous adsorption was obtained in most of the studies involving endothermic and exothermic processes. The complexation, precipitation, ion exchange, and electrostatic interactions are the probable mechanisms in the adsorption onto ZnONPs with a predominance of complexation. The desorption process, reusability of ZnONPs as well as direction for future investigations were also presented.

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Adsorption of copper ions from aqueous media using montmorillonite-Al2O3 nano-adsorbent incorporated with Fe3O4 for facile separation

Cited by 12 publications

References 51 publications

Superhydrophobic Al₂O₃/MMT-PDMS Coated Fabric for Self-Cleaning and Oil–Water Separation Application

Superhydrophobic Al₂O₃/MMT-PDMS Coated Fabric for Self-Cleaning and Oil–Water Separation Application

Enhanced Production of Bacterial Cellulose from Miscanthus as Sustainable Feedstock through Statistical Optimization of Culture Conditions

Adsorption mechanism and modeling of radionuclides and heavy metals onto ZnO nanoparticles: a review

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Adsorption of copper ions from aqueous media using montmorillonite-Al2O3 nano-adsorbent incorporated with Fe3O4 for facile separation

Cited by 12 publications

References 51 publications

Superhydrophobic Al2O3/MMT-PDMS Coated Fabric for Self-Cleaning and Oil–Water Separation Application

Superhydrophobic Al2O3/MMT-PDMS Coated Fabric for Self-Cleaning and Oil–Water Separation Application

Enhanced Production of Bacterial Cellulose from Miscanthus as Sustainable Feedstock through Statistical Optimization of Culture Conditions

Adsorption mechanism and modeling of radionuclides and heavy metals onto ZnO nanoparticles: a review

Contact Info

Product

Resources

About

Superhydrophobic Al₂O₃/MMT-PDMS Coated Fabric for Self-Cleaning and Oil–Water Separation Application

Superhydrophobic Al₂O₃/MMT-PDMS Coated Fabric for Self-Cleaning and Oil–Water Separation Application