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Effects of operating variables in adsorption for azo textile dye from wastewater: Optimization of process parameters by Box-Behnken design of RSM: Isothermal and kinetic studies

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Title Effects of operating variables in adsorption for azo textile dye from wastewater: Optimization of process parameters by Box-Behnken design of RSM: Isothermal and kinetic studies
 
Creator Upender, H
Tadepalli, Srinivas
Afzal, Asif
 
Subject Azo textile dye
Batch study
Isotherm
Pseudo-first order model
Pseudo Second order model
Regression Coefficient
Wheat bran
 
Description 9-22
The removal of dye from azo textile dye using raw wheat bran adsorbent prepared by coating on low-density
Polypropylene (PP) particles has been studied by batch experimental studies. The batch adsorption studies have been
performed for 36 h. Box–Behnken design of response surface methodology (RSM) is utilized to ascertain the impact of
initial concentration, adsorbent dose, and pH on the removal of dye. The data obtained from experimental parameters have
been analyzed through the fitting of kinetic models such as Pseudo-first order, Pseudo second-order model, Intraparticle
diffusion, and Elovich model for dye removal along with correlation or regression coefficient (R2) values. The statistical
analyses of the results collected in reaction kinetic modeling portray the superiority of the Pseudo second-order model for
both dye removal. In the dye removal, the higher R2 values are seen in case of better suitability of the Pseudo second-order
model. The isotherms of adsorption experiments have been performed by employing different adsorption isotherm models
such as Dubinin–Radushkevich, and Halsey. It is observed that both isotherms reflect the equilibrium data for dye removal.
 
Date 2022-04-25T10:32:49Z
2022-04-25T10:32:49Z
2022-01
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscair.res.in/handle/123456789/59582
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.29(1) [January 2022]