Removal of methylene blue dye from aqueous solution using pure talc and polyacrylamide–talc composite: isotherms, kinetic and thermodynamic studies

Bilgiç, Mehmet; Şimşek, Selçuk; Şenol, Zeynep Mine

doi:10.1007/s00289-022-04602-7

Cited by 2 publications

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“…The results suggested that surface modification could significantly enhance the adsorption of contaminants by talc. The absorbents had better adsorption capacity for MB compared to other modified talc [42,43]. Therefore, two modified talc were selected for further experimental studies.…”

Section: Adsorption Capacities Of Raw Talc and Modified Talcmentioning

confidence: 99%

Removal of Methylene Blue from Aqueous Solutions by Surface Modified Talc

et al. 2023

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In this study, raw talc powder surface modification was conducted, and the powder was modified in two different methods using acid washing and ball milling. Modified talc was characterized by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). In order to investigate the adsorption capacity of modified talc on dyes, adsorption experiments were carried out with methylene blue (MB) in aqueous solutions as the target contaminant. The findings of the characterization revealed that both modifications increased the adsorption capacity of talc, which was attributed to changes in specific surface area and active groups. The influence of process parameters such as contact time, pH, dye concentration, and adsorbent dosage on the adsorption performance was systematically investigated. Modified talc was able to adsorb MB rapidly, reaching equilibrium within 60 min. Additionally, the adsorption performance was improved as the pH of the dye solution increased. The isotherms for MB adsorption by modified talc fitted well with the Langmuir model. The pseudo-second-order model in the adsorption kinetic model properly described the adsorption behavior. The results show that the modified talc can be used as an inexpensive and abundant candidate material for the adsorption of dyes in industrial wastewater.

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Section: Adsorption Capacities Of Raw Talc and Modified Talcmentioning

confidence: 99%