Adsorption behaviors of methylene blue from aqueous solution on mesoporous birnessite

Pang, Jiabin; Fu, Fenglian; Ding, Zecong; Lu, Jiangbo; Li, Na; Tang, Bing

doi:10.1016/j.jtice.2017.04.041

Cited by 118 publications

(55 citation statements)

References 50 publications

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“…As the pH values went down, the performance for MB removal was reduced, for the surface of the sample presented positive while the pH < pH pzc . Similar findings were reported by other researchers . So the earlier‐mentioned results showed that the sample had a good affinity to MB ions through a broad range of pH from 5 to 12 (removal rate percent > 78), which was highly advantageous for practical operation.…”

Section: Resultssupporting

confidence: 88%

“…Similar findings were reported by other researchers. 33,35 So the earlier-mentioned results showed that the sample had a good affinity to MB ions through a broad range of pH from 5 to 12 (removal rate percent > 78), which was highly advantageous for practical operation. And therefore, in the meanwhile, the adsorption performance of this sample was representative enough when MB solution was adjusted to neutral (pH was about 7.0) in the next experiments.…”

Section: Effect Of Initial Solution Ph On Mb Removalmentioning

confidence: 97%

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Fe₃O₄@C particles synthesized with iron‐containing water treatment residuals and its potential for methylene blue removal

Zeng

Qiao

Zhai

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Iron (Fe)‐containing groundwater treatment residual is a kind of waste from groundwater treatment plants, showing good potential to be reused. Attention has been paid to Fe‐based magnetic water treatment materials for their easy magnetic separation, and in the meantime, kinds of adsorbents were developed to address the severe global dyes pollution. RESULTS Black magnetic material was obtained with using the iron‐containing wastes as iron source without adding other iron chemical reagents by hydrothermal reaction. The X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS) and Fourier‐transform infrared (FTIR) results show that the product is comprised of crystalline iron(II,III) oxide (Fe3O4) core and amorphous carbon shell (Fe3O4@C), and the core‐shell structure can also been seen clearly in transmission electron microscopy (TEM) images. Vibrating sample magnetometer (VSM) result shows its saturation magnetization is 33.56 emu/g. This sample's sorption experiments for methylene blue (MB) removal were conducted, and the experiment results indicated that this sample could be used in a wide range of pH (5–12) and the adsorption might be a complex chemical diffusion process consisting of boundary layer effect due to kinetic modeling fitting analysis. The maximum sorption amount of MB was 16.33 and 19.13 mg/g, respectively at 298 K and 308 K. This sample after five regeneration cycles still had 72.1% MB removal rate. CONCLUSION The Fe3O4@C particles with good magnetism were synthesized successfully with Fe‐containing water treatment residuals, water treatment waste sludge, via a one‐step hydrothermal reaction, which could be of reasonable analogy for treating other Fe‐containing industrial waste. Furthermore, this sample could be used as adsorbent for MB molecules removal from dyed water with good reusability and easy magnetic separation. © 2019 Society of Chemical Industry

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Section: Resultssupporting

confidence: 88%

Section: Effect Of Initial Solution Ph On Mb Removalmentioning

confidence: 97%

Fe₃O₄@C particles synthesized with iron‐containing water treatment residuals and its potential for methylene blue removal

Zeng

Qiao

Zhai

et al. 2019

J of Chemical Tech & Biotech

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“…This could be due to the presence of various functional groups as well as the elemental composition of NOS that perhaps might have facilitated the adsorption process. Previous researchers showed that the maximum adsorption capacity of MB was 111.1 mg/g using cucumber peels, 309.6 mg/g using shaddock peel [58], and 109.9 mg/g using banana leaves [8,59]. Another dimensionless parameter that can be calculated is separation factor (R L ), which can detect the favorability of the adsorption process.…”

Section: Adsorption Isothermmentioning

confidence: 99%

“…Another dimensionless parameter that can be calculated is separation factor (R L ), which can detect the favorability of the adsorption process. According to Pang et al [59], R L values can be calculated using the following equation:…”

Section: Adsorption Isothermmentioning

confidence: 99%

Utilization of nano-olive stones in environmental remediation of methylene blue from water

Al-Ghouti

Dib

2020

J Environ Health Sci Engineer

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Background The use of agricultural waste as a low-cost adsorbent for the removal of hazardous methylene blue (MB) from aqueous solution was investigated. In this research, the potentiality of using black nano olive stones (black NOS) and green nano olive stones (green NOS) for MB adsorption was conducted. Methods Various remediation parameters such as initial MB concentration, pH, and temperature were investigated. Thermodynamic study was carried out to determine the homogeneity of the adsorbent and spontaneity of the adsorption process. Different physical and chemical characterizations were studied using scanning electron microscopy (SEM), Fourier transform infrared (FTIR), Brunauer-Emmett-Teller (BET) surface area, pore radius and pore volume. Results It was found that NOS exhibits an acidic nature, however the highest MB removal efficiency was recorded at pH 10; reaching up to 71%. The negative value of the heat of the adsorption process (ΔH°) indicated the reaction followed an exothermic pathway while the negative value of Gibbs adsorption (ΔG°) further suggested its spontaneous nature. The results indicated that the Freundlich model described well the adsorption process with 99.5% correlation coefficient for green NOS. FTIR was used to analyze functional groups on the adsorbents' surfaces that could play vital roles in the remediation process. SEM analysis revealed that the adsorbents comprised of abundant spherical deep cavities and porous nature. Conclusion The result obtained successfully demonstrated the potential of using black and green NOS as suitable adsorbents for the removal of MB from water.

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“…The PFO 24-26, 44, 45 and PSO [27][28][29][30][31][32][33][34]46 were used extensively to describe the sorption kinetics. The MOE reported by Marczewski 3 is mixed 1, 2-order kinetic equation, the parameter f2 is the factor determining share of the second-order type kinetics in the whole process, it is mathematically identical to the IKL equation.…”

Section: Adsorption Kinetic Modelsmentioning

confidence: 99%

Which model should be selected to analyze the experimental data among many adsorption kinetic models?

Hong¹,

G²,

Zhang³

et al. 2017

Preprint

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<p>For many years adsorption kinetics has been investigated, the development of kinetic model has been proceeded in order to obtain the particular kinetic model which better agree with the experimental data. As the result, dozens of kinetic models have been established and used individually despite there are a certain relationship between them. Students often ask which model should be selected to analyze their experimental data among different adsorption kinetic models. In order to clarify dependence relationship and similar degree between adsorption kinetic models, we calculated and compared. Calculation results were successfully compared with the correlation between them and an education method for adsorption kinetic study was proposed. This method can help graduate students of chemical engineering to understand the calculations on kinetics.</p>

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Adsorption behaviors of methylene blue from aqueous solution on mesoporous birnessite

Cited by 118 publications

References 50 publications

Fe₃O₄@C particles synthesized with iron‐containing water treatment residuals and its potential for methylene blue removal

Fe₃O₄@C particles synthesized with iron‐containing water treatment residuals and its potential for methylene blue removal

Utilization of nano-olive stones in environmental remediation of methylene blue from water

Which model should be selected to analyze the experimental data among many adsorption kinetic models?

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Adsorption behaviors of methylene blue from aqueous solution on mesoporous birnessite

Cited by 118 publications

References 50 publications

Fe3O4@C particles synthesized with iron‐containing water treatment residuals and its potential for methylene blue removal

Fe3O4@C particles synthesized with iron‐containing water treatment residuals and its potential for methylene blue removal

Utilization of nano-olive stones in environmental remediation of methylene blue from water

Which model should be selected to analyze the experimental data among many adsorption kinetic models?

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Product

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Fe₃O₄@C particles synthesized with iron‐containing water treatment residuals and its potential for methylene blue removal

Fe₃O₄@C particles synthesized with iron‐containing water treatment residuals and its potential for methylene blue removal