Comparative study of synthesis methods and pH-dependent adsorption of methylene blue dye on UiO-66 and NH2-UiO-66

Daneshgar, Hossein; Sojdeh, Soheil; Salehi, Ghazal; Edrisi, Mohammad; Bagherzadeh, Mojtaba; Rabiee, Navid

doi:10.1016/j.chemosphere.2024.141543

Cited by 8 publications

(1 citation statement)

References 47 publications

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“…This indicates that Ca-CG releases alkalinity in dye solutions, raising the pH of the solution. It has been reported that as pH increases, the negative charge on the adsorbent surface also increases, enhancing the electrostatic interaction between the adsorbent and the dye, thereby increasing the adsorption capacity for the dye [27]. Furthermore, under alkaline conditions, hydroxide ions may also form co-adsorption with dye molecules, making the decolorization of dye solutions easier to accomplish [28].…”

Section: Batch Experimentsmentioning

confidence: 99%

Study on Preparation of Calcium-Based Modified Coal Gangue and Its Adsorption Dye Characteristics

Wang,

Dong,

Shao

et al. 2024

Molecules

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Efficient and thorough treatment of dye wastewater is essential to achieve ecological harmony. In this study, a new type of calcium-based modified coal gangue (Ca-CG) was prepared by using solid waste coal gangue as raw material and a CaCl2 modifier, which was used for the removal of malachite green, methylene blue, crystal violet, methyl violet and other dyes in water. When the dosage of Ca-CG was 1–5 g/L, the dosage of Ca-CG was the main factor affecting the dye adsorption effect. The adsorption effects of Ca-CG on four dyes were as follows: malachite green > crystal violet > methylene blue > methyl violet. Kinetics, isotherms and thermodynamic analysis showed that the adsorption of malachite green, methyl blue, crystal violet and methyl violet by Ca-CG fitted the second-order kinetic model, and adsorption with chemical reaction is the main process. The adsorption of four dyes by Ca-CG conformed to the Freundlich model, which is dominated by multi-molecular layer adsorption, and the adsorption was easy to carry out. The adsorption process of Ca-CG on the four dyes was spontaneous. The results of FTIR, XRD and SEM showed that the calcium-based materials such as lipscombite and dolomite were the key to the adsorption of malachite green by Ca-CG, and the main mechanisms for the adsorption of malachite green by Ca-CG are surface precipitation, electrostatic action, and chelation reaction. Ca-CG adsorption has great potential for the removal of dye wastewater.

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Section: Batch Experimentsmentioning

confidence: 99%

Study on Preparation of Calcium-Based Modified Coal Gangue and Its Adsorption Dye Characteristics

Wang,

Dong,

Shao

et al. 2024

Molecules

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Modified Cotton Sorbent for Removing Crude Oil Pollution From Water: Sorption Kinetic Study

Zibaei,

Tabatabaei Ghomsheh,

Mirzaei

et al. 2024

Remediation Journal

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This research marks an advancement in the field of environmental remediation by introducing a novel sorbent material tailored for the efficient removal of crude oil from industrial wastewater. By focusing on the modification of cotton fibers with charcoal and bentonite, the study addresses the pressing need for sustainable solutions to oil contamination in aquatic environments. Through a comprehensive array of characterization techniques including FT‐IR, TGA, XRD, SEM, EDS, and BET analysis, the structural and surface properties of the modified materials were thoroughly examined, providing insights into their suitability for practical applications. Sorption studies conducted to determine sorption capacity, optimize sorbent amount, and evaluate the effect of contact time on removal efficiency yielded favorable results, highlighting the potential of the developed sorbents to effectively treat crude oil in aqueous solutions. Additionally, the investigation of sorption kinetics using pseudo‐first‐order, pseudo‐second‐order, and intra‐particle diffusion models elucidated the underlying adsorption mechanisms governing the interaction between the sorbent and crude oil molecules. These findings not only contribute to the scientific understanding of sorption processes but also offer practical guidance for the development of optimized sorbent materials and remediation strategies. Overall, this study represents a significant step toward the development of cost‐effective and environmentally friendly methods for oil spill cleanup and industrial wastewater treatment, with implications for sustainable water management practices worldwide. Continued research efforts in this direction hold promise for further advancements in the field, potentially leading to more efficient and scalable solutions for addressing the global challenge of oil contamination in water environments.

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UiO-66 MOF/Zr-di-terephthalate/cellulose hybrid composite synthesized via sol-gel approach for the efficient removal of methylene blue dye

Demirci,

Baig,

Kayan

2024

International Journal of Biological Macromolecules

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Comparative study of synthesis methods and pH-dependent adsorption of methylene blue dye on UiO-66 and NH2-UiO-66

Cited by 8 publications

References 47 publications

Study on Preparation of Calcium-Based Modified Coal Gangue and Its Adsorption Dye Characteristics

Study on Preparation of Calcium-Based Modified Coal Gangue and Its Adsorption Dye Characteristics

Modified Cotton Sorbent for Removing Crude Oil Pollution From Water: Sorption Kinetic Study

UiO-66 MOF/Zr-di-terephthalate/cellulose hybrid composite synthesized via sol-gel approach for the efficient removal of methylene blue dye

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