Dyes removal by use carbon nanotube and carbon nanotube functional group.

Abstract

Abstract Batch experiments were accomplished to remove methylene blue as a cationic dye onto multi wall carbon nanotubes (MWCNTs) and carbon Nano tube functional group (fMWCNTs). The results of predominant variables governing the efficiency of the manner which include, dye concentration, MWCNTs dosage, contact time, stirring speed and pH have been studied. Experimental effects have shown that, the quantity of dye adsorption elevated with elevating CNTs dosage and stirring velocity. in addition to its far lower with decreasing of the initial concentration of the dye. The dye elimination using 400 mg /L of MWCNTs changed into extra than 98%. The dosage (400 mg /L) is the optimum dosage of functionalized CNTs (fMWCNTs). to remove of methylene blue with removal more than 98%. The adsorption kinetic information was analysed the use of pseudo-2nd-order models. It has become determined that the pseudo-2d-order kinetic version became the most suitable version, describing the adsorption kinetics. Adsorption isotherm onto the (fMWCNTs) has become determined with 40 mg /L as methylene blue concentration. Equilibrium time turned into 80 min. Equilibrium statistics had been suited for the Langmuir and Freundlich isotherm models and isotherm constants have been determined.

Key findings

• ▸The dye elimination using 400 mg /L of MWCNTs changed into extra than 98%.
• ▸to remove of methylene blue with removal more than 98%.

Keywords

Identifiers

DOI

10.1088/1757-899x/737/1/012192

Journal

IOP Conference Series: Materials Science and Engineering

Year

2020