Adsorption of basic fuchsin using waste materials—bottom ash and deoiled soya—as adsorbents

Gupta, Vinod Kumar; Mittal, Alok; Gajbe, Vibha; Mittal, Jyoti

doi:10.1016/j.jcis.2007.09.091

Cited by 269 publications

(115 citation statements)

References 20 publications

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“…into potential adsorbents for the removal of dyes and heavy metals [13][14][15][16][17]. In the past few years our laboratory has developed versatile and cost-effective methods for decolorizing wastewater by employing some waste materials [18][19][20][21][22]. The present study is yet another attempt to explore the possibility of utilizing bottom ash and deoiled soya as economic and effective adsorbents for the removal of a hazardous coloring agent, carmoisine A, from wastewaters.…”

Section: Introductionmentioning

confidence: 97%

Adsorption of carmoisine A from wastewater using waste materials—Bottom ash and deoiled soya

Gupta

Mittal

Malviya

et al. 2009

Journal of Colloid and Interface Science

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300

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a b s t r a c tThe present study deals with the application of bottom ash, a power plant waste, and deoiled soya, an agricultural waste, for the adsorptive removal of carmoisine A dye from its aqueous solutions. This paper incorporates a comparative study of the adsorption characteristics of the dye on these effective adsorbents along with effects of time, temperature, concentration, and pH. Analytical techniques have been employed to find pore properties and characteristics of adsorbent materials. Batch adsorption studies, kinetic studies, and column operations have also been performed to understand the dye extraction ability of the adsorbents. The adsorption behavior of the dye has been studied using Freundlich, Langmuir, Tempkin, and Dubinin-Radushkevich adsorption isotherm models. The monolayer adsorption capacity determined from the Langmuir adsorption equation has been found as 1.78 Â 10 À5 and 5.62 Â 10 À5 mol g À1 at 323 K for bottom ash and deoiled soya, respectively. Kinetic measurements suggest the involvement of pseudo-second-order kinetics in both adsorptions and each case is controlled by a particle diffusion process. Column experiments demonstrated that both adsorbents could be practically utilized in elimination of hazardous dye from effluent and dye material can be recovered by eluting NaOH through the exhausted columns.

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Section: Introductionmentioning

confidence: 97%

Adsorption of carmoisine A from wastewater using waste materials—Bottom ash and deoiled soya

Gupta

Mittal

Malviya

et al. 2009

Journal of Colloid and Interface Science

Self Cite

300

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“…In the last few years there has been an emphasis to develop waste materials as potential scavengers for the removal of different types of pollutants from water and waste materials such as baker's yeast [18], tamarind wood [19], agricultural waste biomass [20], gypsum [21], and sludge [22,23] have been employed. A significant contribution in the removal of toxic dyes from the wastewater has also been made from our laboratories [24][25][26][27][28][29][30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

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

Mittal

Malviya

et al. 2009

Journal of Colloid and Interface Science

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662

210

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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.

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“…A regressão linear entre essas grandezas permitiu a geração da função: y= 0,025 + 1,48x10 4 P, R= 0,999, n=10, onde P= a concentração do corante (mol L -1 ), R= coefi ciente de correlação e n= número de medidas. Através destes dados foi possível estimar o coefi ciente de absortividade molar (ε), para o pigmento P como sendo igual 1,48x10 4 mol L -1 , através de três leituras superior ao desvio--padrão do branco, dividido pela sensibilidade de calibração. A sensibilidade analítica foi calculada como sendo 2,07x10 7 [45].…”

Section: Conclusõesunclassified

“…Suas propriedades toxicológicas manifestam-se pela irritação da derme, dos olhos, aparelho respiratório; podendo alcançar o trato gastrointestinal provocando náuse-as, vômitos, diarréia etc. Relatos da literatura têm mostrado que a exposição prolongada ao corante, pode causar danos aos constituintes do sangue, fí-gado, baço e na tireóide, bem como ao sistema nervoso, além de sintomas de enxaqueca, vertigens, letargias e contração muscular [4]. Alguns trabalhos têm mostrado que o corante encontra-se associado ao aumento no risco de incidência de câncer de bexiga [5].…”

Section: Introductionunclassified

“…Os ensaios potenciométricos de P mostraram que o corante é um ácido monoprótico e fraco (pKa= 8,78); enquanto a espectrofotometria permitiu estimar seu coeficiente de absortividade molar (ε) igual a 1,48x10 4 mol -1 cm -1 L. A curva analítica para a determinação de P apresenta linearidade entre 7,36x10 -6 a 7,36x10 -5 mol L -1 e a metodologia foi aplicação em amostras biológicas.…”

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Monitoramento do corante pararosanilina em amostras biológicas

et al. 2010

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Pararosaniline dye (P) is a pigment which has a significant role in analysis of chemical substances and gram-positive and negative bacteria, as well as other microorganisms. Potentiometric essays of P have shown that the colorant is a weak monoprotic acid (pKa= 8,78);and the spectrophotometry allows to estimate its molar absorption coefficient as 1,48x104 mol-1 cm-1 L. The analytical curve for a determination of P has linearity between 7,36x10-6 and 7,36x10-5 mol L-1, and the methodology was application in biological samples.

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Adsorption of basic fuchsin using waste materials—bottom ash and deoiled soya—as adsorbents

Cited by 269 publications

References 20 publications

Adsorption of carmoisine A from wastewater using waste materials—Bottom ash and deoiled soya

Adsorption of carmoisine A from wastewater using waste materials—Bottom ash and deoiled soya

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

Monitoramento do corante pararosanilina em amostras biológicas

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