Equilibrium and kinetic studies of the cationic dye removal capability of a novel biosorbent Tamarindus indica from textile wastewater / Shooka Khorramfar in COLORATION TECHNOLOGY, Vol. 126, N° 5 (2011)  

[article]  inCOLORATION TECHNOLOGY > Vol. 126, N° 5 (2011) . - p. 261-268 Titre : Equilibrium and kinetic studies of the cationic dye removal capability of a novel biosorbent Tamarindus indica from textile wastewater Type de document : texte imprimé Auteurs : Shooka Khorramfar, Auteur ; Niyaz Mohammad Mahmoodi, Auteur ; Mokhtar Arami, Auteur ; Kamaladin Gharanjig, Auteur Année de publication : 2011 Article en page(s) : p. 261-268 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Chimie textile Cinétique chimique Colorants cationiques Eaux usées -- Epuration Equilibre chimique Tamarinier et constituants Index. décimale : 667.3 Teinture et impression des tissus Résumé : In this paper, the use of tamarind hull biosorbent (Tamarindus indica) has been investigated to remove cationic dyes from textile eflluent. Basic Violet 6 and Basic Red 18 were used as cationic dye models. The surface characteristics of tamarind hull were investigated using Fourier Transform–infrared and scanning electron microscopy. The influence of process variables such as adsorbent dosage, initial dye concentration and pH were studied. The presence of fuctional groups such as hydroxy and amine groups onto the tamarind hull surface were proved by Fourier Transform–infrared analysis. Data were evaluated for compliance with the Langmuir and Freundlich isotherm models. The results indicated that the data for adsorption of Basic Violet 6 and Basic Red 18 onto tamarind hull fitted well with the Freundlich isotherm model. Also, the adsorption kinetics of Basic Violet 6 and Basic Red 18 on biosorbent was studied. The rates of sorption were found to conform to pseudo-second-order kinetics with good correlation. Results indicated that tamarind hull could be used as a biosorbent to remove cationic organics from contaminated watercourses. DOI : 10.1111/j.1478-4408.2010.00256.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2010.00256.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10889 [article]

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Novel hydrolysable azo disperse dyes based on N-ester-1,8-naphthalimide: dyeing of polyester–cotton blends / Javad Mokhtari in COLORATION TECHNOLOGY, Vol. 124, N° 5 (2008)  

[article]  inCOLORATION TECHNOLOGY > Vol. 124, N° 5 (2008) . - p. 295-300 Titre : Novel hydrolysable azo disperse dyes based on N-ester-1,8-naphthalimide: dyeing of polyester–cotton blends Type de document : texte imprimé Auteurs : Javad Mokhtari, Auteur ; Kamaladin Gharanjig, Auteur ; Mokhtar Arami, Auteur ; Niyaz Mohammad Mahmoodi, Auteur Année de publication : 2009 Article en page(s) : p. 295-300 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : The dyeing of polyester–cotton blends with new alkali-hydrolysable azo disperse dyes based on N-ester-1,8-naphthalimide was investigated. Polyester–cotton blend fabrics were dyed using both one- and two-bath methods. Dyes 3 and 4 offered lower colour yield on polyester using the one-bath method. For the rest of the dyes, employing either the one- or two-bath method resulted in a similar colour yield on polyester fabric. The results for fastness properties and colour yield of the dyeings showed that the dyes were suitable for dyeing polyester–cotton blends using the one-bath method. The kinetic study of hydrolysis of the dyes in alkali media obeyed the pseudo first-order reaction rate. DOI : 10.1111/j.1478-4408.2008.00155.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2008.00155.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3177 [article]

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