Biosorptive Removal of Congo Red Dye Using  Eco-friendly Biomass from Polyalthia longifolia

M. Sarwar; Umar Farooq; Khalid Mehmood; M. Ajmal; M. Farooq; M. Athar; M. Salman

doi:10.9734/IRJPAC/2016/29758

Research Article Open access CC BY 4.0

Biosorptive Removal of Congo Red Dye Using Eco-friendly Biomass from Polyalthia longifolia

M. Sarwar, Umar Farooq, Khalid Mehmood, M. Ajmal, M. Farooq, M. Athar, M. Salman

International Research Journal of Pure and Applied Chemistry · pp. 1–9 · Published 9 Nov 2016

10.9734/IRJPAC/2016/29758

Abstract

Being toxic, Congo red is one of the most important dyes to be treated before being disposed of into waters. In the present study, dried powdered branches and leaves from an ornamental plant (Polyalthia longifolia) have been investigated for the biosorptive removal of Congo red dye from its aqueous solution. Infrared spectrum of the leaves and branches indicated the presence of -OH, -NH2 and -C=O groups as the main binding sites. Influence of time of contact, pH of dye solution and initial concentration of dye was studied in batch adsorption experiments. Using nonlinear modeling, it was found that dye-leaves and dye-branches systems obeyed pseudo-second-order kinetic model with equilibrium reaching in 60 minutes at 2 g/L of biomass and 20 mg/L of dye concentration. Langmuir model was followed by both systems with maximum capacity as leaves (10.32 mg/g) and branches (8.57 mg/g). The biosorption capacities have been compared with a number of reported studies.

Polyalthia longifolia Congo red nonlinear kinetics langmuir adsorption

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M. Sarwar, Umar Farooq, Khalid Mehmood, M. Ajmal, M. Farooq, M. Athar, M. Salman (2016). Biosorptive Removal of Congo Red Dye Using Eco-friendly Biomass from Polyalthia longifolia. International Research Journal of Pure and Applied Chemistry , 1–9. https://doi.org/10.9734/IRJPAC/2016/29758

Affiliations

M. Sarwar — Department of Chemistry, Minhaj University, Lahore, Pakistan and Department of Chemistry, Lahore Garrison University, Jinnah Campus, Lahore, Pakistan
Umar Farooq — Institute of Chemistry, University of the Punjab, Lahore, Pakistan
Khalid Mehmood — Department of Chemistry, Minhaj University, Lahore, Pakistan
M. Ajmal — Department of Chemistry, Minhaj University, Lahore, Pakistan
M. Farooq — Department of Chemistry, Minhaj University, Lahore, Pakistan
M. Athar — Institute of Chemistry, University of the Punjab, Lahore, Pakistan
M. Salman — Institute of Chemistry, University of the Punjab, Lahore, Pakistan

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