Equilibrium and kinetic studies of the cationic dye removal capability of a novel biosorbent Tamarindus indica from textile wastewater

被引:24
作者
Khorramfar, Shooka [2 ]
Mahmoodi, Niyaz Mohammad [1 ]
Arami, Mokhtar [2 ]
Gharanjig, Kamaladin [1 ]
机构
[1] Inst Color Sci & Technol, Dept Environm Res, Tehran, Iran
[2] Amir Kabir Univ Technol, Dept Text Engn, Tehran, Iran
关键词
IMMOBILIZED TITANIA NANOPHOTOCATALYSIS; AGRICULTURAL SOLID-WASTE; LOW-COST ADSORBENTS; AQUEOUS-SOLUTIONS; METHYLENE-BLUE; ORANGE PEEL; SORPTION ISOTHERMS; ACTIVATED CARBON; FRUIT SHELL; ACID DYE;
D O I
10.1111/j.1478-4408.2010.00256.x
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
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.
引用
收藏
页码:261 / 268
页数:8
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