Use of hen feathers as potential adsorbent for the removal of a hazardous dye, Brilliant Blue FCF, from wastewater

Journal of Colloid and Interface Science

Malviya

et al. 2009

662

210

a b s t r a c tThe present investigation assesses the applicability of waste materials-bottom ash and deoiled soya-for the removal of the colorant Congo red from wastewaters. The adsorption characteristics and dye removal efficiency of adsorbents have been determined by investigating factors such as effect of pH, effect of concentration of the dye, amount of adsorbents, contact time, and temperature. Langmuir, Freundlich, Tempkin, and Dubinin-Radushkevich isotherm models have been used to evaluate the ongoing adsorption. With the help of adsorption isotherm data different thermodynamic parameters such as free energy; enthalpy, and entropy have been calculated. The estimated free energy has been obtained as À21.52 kJ mol À1 for bottom ash and À16.88 kJ mol À1 for deoiled soya. On the basis of pseudo-first-order and pseudo-second-order kinetic equations different kinetic parameters have been obtained. Column operations depicted good adsorptive tendencies for Congo red with 96.95% and 97.14% saturation of dye on bottom ash and deoiled soya, respectively. Regeneration of the saturated columns has been made by eluting NaOH solution and more than 90% dye has been recovered in both cases.

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of hazardous anionic dye “Congo red” from wastewater using waste materials and recovery by desorption

Journal of Colloid and Interface Science

Malviya

et al. 2009

662

210

“…There are not many studies that deal with the adsorption of food dyes using various adsorbents. The existing ones deal with the adsorption of acid blue 9 and food yellow 3 using chitosan [8], [9], the adsorption of sunset yellow dyes on CaAl-LDH-NO 3 [10], the adsorption of FD&D Red No.40 by means of chitosan [11]- [14], the adsorption of Brilliant Blue food dye with hen feathers [15], the adsorption of Tartrazine, Allura Red, Sunset Yellow and Indigo Carmine food dyes on Lewatit MonoPlus M-600 [16] and tartrazine allura red adsorption over Spirulina platensis [17].…”

Section: Introductionmentioning

confidence: 99%

Removal of FD&C Red No.40 Food Dye from an Aqueous Solution by Vine-Trimming Waste

Sütçü¹

2014

IJCEA

Abstract-The purpose of this study is to examine the removal of the food dye FD&C Red No.40 from an aqueous solution by means of vine-trimming waste. The adsorption experiments focused on the parameters such as contact time, pH of the aqueous solution, the amount of adsorbent, initial dye concentration and the temperature of the aqueous solution. Moreover, a study was carried out to make sure that the adsorption was in compliance with the Langmuir and Freundlich isotherm models and thermodynamic parameters were determined.Index Terms-Vine-trimming waste, food dye, adsorption.

“…Thus researchers are pursuing hard to develop more suitable, efficient, cheap and easily accessible type of adsorbents. Much work has been carried out using peat [9], sugar cane bagasse [10], biomass [11], eucalyptus bark [12], bottom ash, de-oiled soya [13,14] and hen feathers [15] as potential adsorbents.…”

Section: Introductionmentioning

confidence: 99%

“…In place of disposing these feathers in landfills, these are usually recycled by converting into animal feed via hydrolyzation [17]. In recent past, feathers have also been successfully used in the removal of heavy metals [18] phenol [19] and organic dyes [15,20] from their aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Freundlich and Langmuir adsorption isotherms and kinetics for the removal of Tartrazine from aqueous solutions using hen feathers

Kurup

Journal of Hazardous Materials

2007

399

148

Tartrazine, a yellow menace, is widely being used in cosmetics, foodstuffs, medicines and textile. It is carcinogenic and also catalyzes allergic problems. In the present work the ability to remove Tartrazine from aqueous solutions has been studied using waste material-hen feathers, as adsorbent. Effects of pH, concentration of the dye, temperature and adsorbent dosage have been studied. Equilibrium isotherms for the adsorption of the dye were measured experimentally. Results were analyzed by the Freundlich and Langmuir equation at different temperatures and determined the characteristic parameters for each adsorption isotherm. The adsorption process has been found endothermic in nature and thermodynamic parameters, Gibb's free energy ( G • ), change in enthalpy ( H • ) and change in entropy ( S • ) have been calculated. The paper also includes results on the kinetic measurements of adsorption of the dye on hen feathers at different temperatures. By rate expression and treatment of data it has been established that the adsorption of Tartrazine over hen feathers follows a first-order kinetics and a film diffusion mechanism operates at all the temperatures.