TY - JOUR
T1 - Remediation of phenol-contaminated water by adsorption using poly(methyl methacrylate) (PMMA)
AU - Al-Muhtaseb, Ala'a H.
AU - Ibrahim, Khalid A.
AU - Albadarin, Ahmad B.
AU - Ali-khashman, Omar
AU - Walker, Gavin M.
AU - Ahmad, Mohammad N.M.
PY - 2011/4/1
Y1 - 2011/4/1
N2 - Recently polymeric adsorbents have been emerging as highly effective alternatives to activated carbons for pollutant removal from industrial effluents. Poly(methyl methacrylate) (PMMA), polymerized using the atom transfer radical polymerization (ATRP) technique has been investigated for its feasibility to remove phenol from aqueous solution. Adsorption equilibrium and kinetic investigations were undertaken to evaluate the effect of contact time, initial concentration (10-90. mg/L), and temperature (25-55°C). Phenol uptake was found to increase with increase in initial concentration and agitation time. The adsorption kinetics were found to follow the pseudo-second-order kinetic model. The intraparticle diffusion analysis indicated that film diffusion may be the rate controlling step in the removal process. Experimental equilibrium data were fitted to five different isotherm models namely Langmuir, Freundlich, Dubinin-Radushkevich, Temkin and Redlich-Peterson by non-linear least square regression and their goodness-of-fit evaluated in terms of mean relative error (MRE) and standard error of estimate (SEE). The adsorption equilibrium data were best represented by Freundlich and Redlich-Peterson isotherms. Thermodynamic parameters such as Δ. G° and Δ. H° indicated that the sorption process is exothermic and spontaneous in nature and that higher ambient temperature results in more favourable adsorption.
AB - Recently polymeric adsorbents have been emerging as highly effective alternatives to activated carbons for pollutant removal from industrial effluents. Poly(methyl methacrylate) (PMMA), polymerized using the atom transfer radical polymerization (ATRP) technique has been investigated for its feasibility to remove phenol from aqueous solution. Adsorption equilibrium and kinetic investigations were undertaken to evaluate the effect of contact time, initial concentration (10-90. mg/L), and temperature (25-55°C). Phenol uptake was found to increase with increase in initial concentration and agitation time. The adsorption kinetics were found to follow the pseudo-second-order kinetic model. The intraparticle diffusion analysis indicated that film diffusion may be the rate controlling step in the removal process. Experimental equilibrium data were fitted to five different isotherm models namely Langmuir, Freundlich, Dubinin-Radushkevich, Temkin and Redlich-Peterson by non-linear least square regression and their goodness-of-fit evaluated in terms of mean relative error (MRE) and standard error of estimate (SEE). The adsorption equilibrium data were best represented by Freundlich and Redlich-Peterson isotherms. Thermodynamic parameters such as Δ. G° and Δ. H° indicated that the sorption process is exothermic and spontaneous in nature and that higher ambient temperature results in more favourable adsorption.
KW - Adsorption isotherm
KW - FTIR
KW - Kinetics
KW - Phenol
KW - Poly(methyl methacrylate)
KW - Thermodynamics
UR - http://www.scopus.com/inward/record.url?scp=79953294685&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2011.01.057
DO - 10.1016/j.cej.2011.01.057
M3 - Article
AN - SCOPUS:79953294685
SN - 1385-8947
VL - 168
SP - 691
EP - 699
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
IS - 2
ER -
