Kinetic Study of Adsorption of Malachite Green Dye on Poly Aniline-Formaldehyde/Chitosan Composite

Autor:	Juman A. Naser, Israa M. Radhi, Taki A. Himdan, Fatimah A. A. Al-ani
Rok vydání:	2020
Předmět:	Chitosan chemistry.chemical_compound Adsorption Aniline chemistry Mass transfer Diffusion General Medicine In situ polymerization Malachite green Endothermic process Nuclear chemistry
Zdroj:	IOP Conference Series: Materials Science and Engineering. 928:052005
ISSN:	1757-899X 1757-8981
Popis:	Poly aniline-formaldehyde/chitosan composite (PAFC) was prepared by the in situ polymerization method. It was characterized by FTIR spectroscopy in addition to SEM, EDS and TGA techniques. The adsorption kinetics of malachite green dye (MG) on (PAFC) were studied for various initial concentrations (20, 30 and 40) mg/L at three temperatures (308, 313 and 318) K. The influence factors of adsorption; adsorbent dose, contact time, initial concentration and temperature were investigated. The kinetic studies confirmed that adsorption of MG obeyed the pseudo-second-order model and the adsorption can be controlled through external mass transfer followed by intraparticle diffusion mass transfer. A study of the temperature effect was indicated that the adsorption process was endothermic. The activation energy value for each concentration of the dye was calculated, it is observed that it decreases with increasing initial dye concentration.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a60e20220e6e8edbd2832b39a2ea3914 https://doi.org/10.1088/1757-899x/928/5/052005 Zobrazit plný text záznamu