Enhancement of methylene blue adsorption onto activated carbon prepared from Date Press Cake by low frequency ultrasound

Heidarinejad, Zoha; Rahmanian, Omid; Fazlzadeh, Mehdi; Heidari, Mohsen

doi:10.1016/j.molliq.2018.05.100

Cited by 153 publications

(45 citation statements)

References 54 publications

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“…At the last stage, the main rate‐limiting step would be the adsorption reaction due to the very limited sorption sites for MB molecules of the adsorbent, although it could be neglected in the earlier two steps. It was deduced that the process of MB dye onto Fe 3 O 4 @C particles was a complex diffusion process consisting of boundary layer effect in link with the intraparticle diffusion model results, similar to findings obtained by Heidarinejad et al …”

Section: Resultssupporting

confidence: 86%

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: 86%

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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“…e FTIR analysis of Zr 3 O/AC composite is displayed in Figure 3(d). In the spectrum, a broad and strong absorption band at approximately 3449 cm −1 attributed to the O-H stretching vibration of water molecules adsorbed on the surface Zr 3 O/AC [40]. e spectrum of Zr 3 O/AC presents a peak for Zr-O stretching vibration at 620 cm −1 [41].…”

Section: Structural and Texturalmentioning

confidence: 98%

Adsorptive Removal of Methylene Blue and Crystal Violet onto Micro-Mesoporous Zr₃O/Activated Carbon Composite: A Joint Experimental and Statistical Modeling Considerations

Ahsaine

Anfar

Zbair

et al. 2018

Journal of Chemistry

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Zirconium oxide/activated carbon (Zr3O/AC) composite was synthesized to remove methylene blue (MB) and crystal violet (CV) from the aqueous medium. The Zr3O/AC sample was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analyses (EDS), Raman spectroscopy (RS), BET surface area, and Fourier transform infrared spectroscopy (FTIR). XRD profiles confirmed the successful synthesis of the zirconium oxide/activated carbon composite. SEM images showed multideveloped walls with irregular particle size with channel arrays. The nitrogen physisorption combines I and IV types with a calculated BET surface area of 1095 m2/g. Raman spectrum illustrated a disorder of both crystalline structure and the graphitic structure. The adsorption was better fitted to the pseudo-second-order (PSO) kinetic model. Langmuir model fitted better the experimental results of MB adsorption, whereas the CV was better consistent with the Freundlich model. The obtained results suggested that the MB and CV adsorption might be influenced by the mass transfer that involves multiple diffusion steps. The maximum adsorption capacities are 208.33 and 204.12 mg/g for MB and CV, respectively. The MB and CV removal mechanisms were proposed, and statistical optimization was performed using central composite design combined with the response surface methodology.

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“…Biochar is an organic‐based material with high durability and structural integrity and its cost could be minimized when prepared from cheap agro‐industrial wastes. Recently, a biochar (carbonized material) with yield value (product to raw material weight ratio) of 45.5% was produced from Date Press Cake (DPC) . DPC is a caked by‐product of filter press units in Date processing industries .…”

Section: Resultsmentioning

confidence: 99%

Mathematical modeling and sensitivity analysis of xylene removal in a scoria‐compost biofilter

Heidari

Rahimi

Amin

et al. 2019

Env Prog and Sustain Energy

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Mathematical modeling of biofiltration systems improves our understanding and design of such complex systems. This study focused on the theoretical and technical aspects of the modeling of xylene biofiltration in the absence and presence of a nonionic surfactant. In this regard, a mathematical model was developed based on mass balance principles in gas and biofilm phases. The developed model was calibrated and validated using the experimental data obtained from a lab‐scale scoria‐compost biofilter, which operated for 151 days in the absence and presence of Tween‐20, a nonionic surfactant. First, the model was calibrated using the experimental data obtained at empty bed retention time (EBRT) of 90 s and then validated with the data obtained at two other EBRTs. The biofilter provided maximum elimination capacities (ECmax) of 97.5 and 93.6 g m−3 hr−1, respectively, in the absence and presence of the surfactant at EBRT of 90 s. The corresponding predicted ECmax values were 99.9 and 95.7 g m−3 hr−1, respectively. Both model output and experimental data revealed that the nonionic surfactant improved the performance of the biofilter at moderate inlet loading rates. Various statistical measures, including fractional bias, average absolute relative error, and coefficient of determination (R2), showed good agreement between experimental data and estimated model predictions. Sensitivity analysis of the model showed that the specific surface area and bioreactor length affected strongly the results of the model. In general, the results of this study would in turn form the design basis for engineering purposes.

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Enhancement of methylene blue adsorption onto activated carbon prepared from Date Press Cake by low frequency ultrasound

Cited by 153 publications

References 54 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

Adsorptive Removal of Methylene Blue and Crystal Violet onto Micro-Mesoporous Zr₃O/Activated Carbon Composite: A Joint Experimental and Statistical Modeling Considerations

Mathematical modeling and sensitivity analysis of xylene removal in a scoria‐compost biofilter

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Enhancement of methylene blue adsorption onto activated carbon prepared from Date Press Cake by low frequency ultrasound

Cited by 153 publications

References 54 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

Adsorptive Removal of Methylene Blue and Crystal Violet onto Micro-Mesoporous Zr3O/Activated Carbon Composite: A Joint Experimental and Statistical Modeling Considerations

Mathematical modeling and sensitivity analysis of xylene removal in a scoria‐compost biofilter

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Product

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About

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

Adsorptive Removal of Methylene Blue and Crystal Violet onto Micro-Mesoporous Zr₃O/Activated Carbon Composite: A Joint Experimental and Statistical Modeling Considerations