Biosorption of Nitrophenol from Aqueous Mixture of Phenolic Compounds Using Sawdust of  Parkia biglobosa

Deborah Olubunmi Aderibigbe; Abdur-Rahim Adebisi Giwa; Asiata Omotayo Ibrahim; Isah Adewale Bello

doi:10.9734/CJAST/2017/34196

Research Article Open access CC BY 4.0

Biosorption of Nitrophenol from Aqueous Mixture of Phenolic Compounds Using Sawdust of Parkia biglobosa

Deborah Olubunmi Aderibigbe, Abdur-Rahim Adebisi Giwa, Asiata Omotayo Ibrahim, Isah Adewale Bello

Current Journal of Applied Science and Technology · pp. 1–13 · Published 26 Jul 2017

10.9734/CJAST/2017/34196

Abstract

The present study investigated the potential of sawdust of Parkia biglobosa, an agroforestry by-product, for the removal of 4-Nitrophenol (4NP), from its aqueous solutions (singly) and in combination with phenol (binary) and chlorophenol (ternary). The effects of sawdust dose, initial concentration of phenolics and pH of the solution on the adsorption were investigated through batch adsorption experiments. Five isotherm models were employed to describe the equilibrium experimental data. The adsorption kinetics and thermodynamics were also studied. The equilibrium time for the sorption was observed to be 720 min, while the optimum dose was 0.500 g. The kinetics of the adsorption could be best described by the pseudo-second order model, while Freundlich isotherm gave the best fit in all the systems studied. The thermodynamics of the adsorption revealed that the process was not spontaneous at low temperatures as ∆G was positive; but it was endothermic in the single, binary and ternary systems.

Pollution nitrophenol Parkia biglobosa isotherm kinetics binary ternary

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Deborah Olubunmi Aderibigbe, Abdur-Rahim Adebisi Giwa, Asiata Omotayo Ibrahim, Isah Adewale Bello (2017). Biosorption of Nitrophenol from Aqueous Mixture of Phenolic Compounds Using Sawdust of Parkia biglobosa. Current Journal of Applied Science and Technology , 1–13. https://doi.org/10.9734/CJAST/2017/34196

Affiliations

Deborah Olubunmi Aderibigbe — Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.
Abdur-Rahim Adebisi Giwa — Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.
Asiata Omotayo Ibrahim — Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.
Isah Adewale Bello — Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.

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