Adsorption of phenol onto unactivated Moringa oleifera Seed Shells residue by UV -visible spectrophotometer
1 Department of Plant Science and Biotechnology, Kogi State University, Kogi- Nigeria.
2 Department of Pure and Industrial Chemistry, Bayero University Kano-Nigeria.
3 Department of Pure and Applied Chemistry, University of Maiduguri. Borno-Nigeria.
4 Department of Plant science and Biotechnology, University of Nigeria. Enugu-Nigeria.
Research Article
GSC Biological and Pharmaceutical Sciences, 2020, 13(02), 080-090.
Article DOI: 10.30574/gscbps.2020.13.2.0354
Publication history:
Received on 03 November 2020; revised on 09 November 2020; accepted on 11 November 2020
Abstract:
Unactivated adsorbent was prepared from Moringa oleifera seed shells precursor, characterized and evaluated for aqueous phase removal of phenol. The effects of operational parameters such as initial phenolic solution pH and adsorbent dosage on equilibrium sorption were studied. Adsorption isotherms and kinetic experiments performed at (25 oC) furnished some equilibrium and kinetic parameters, respectively. UAMSS shows favorable attributes on (pH, bulk density, attrition, iodine number/surface area, surface charge/functional groups and Fourier transform infrared FTIR). Phenol uptake decreases with increase in solution pH for the adsorbent. Maximum adsorption capacity Qmax (mg/g) was (6.95). The optimal pH for phenol adsorption was attained at pH 3, adsorption kinetics obeyed closely pseudo-second-order model. Adsorption of phenol was well described by Langmuir isotherm. The adsorbent shows a promise of applicability in dephenolation of aqueous effluents/wastewater.
Keywords:
Phenol; Moringa Oleifera Seed Shells; Adsorption Isotherms; Kinetics; Wastewater Remediation
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