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AuthorHawari, A.
AuthorKhraisheh, M.
AuthorAl-Ghouti, M.A.
Available date2016-02-15T09:42:44Z
Publication Date2014-09
Publication NameChemical Engineering Journal
ResourceScopus
Identifierhttp://dx.doi.org/10.1016/j.cej.2014.04.065
CitationHawari, A., Khraisheh, M., Al-Ghouti, M.A. "Characteristics of olive mill solid residue and its application in remediation of Pb2+, Cu2+ and Ni2+ from aqueous solution: Mechanistic study," (2014) Chemical Engineering Journal, 251, pp. 329-336.
ISSN1385-8947
URIhttp://hdl.handle.net/10576/4150
AbstractThis study investigated the use of untreated olive mill solid residues (OMSR) as a solid extractant for Pb2+, Cu2+ and Ni2+ ions from aqueous solution. It was shown that the solution initial pH value affected the metal adsorption capacity and behavior. However, over the pH range of 3.0–5.0, pH-related effects were not significant. Meanwhile, at lower pH values the uptake capacity decreased. It was found that the qmax values are (0.54, 0.59 and 0.63), (0.46, 0.63, and 0.69) and (0.31, 0.42, and 0.47) meq/g for Pb2+ Cu2+ and Ni2+ at 298, 308, and 328 K; respectively. The uptake capacity order is: Pb2+ > Cu2+ > Ni2+. It was also concluded that the R–P and Langmuir models clearly described the metals adsorption onto OMSR more than that of Freundlich and D–R models. The thermodynamics constants ΔH0, ΔS0 and ΔG0 of the adsorption process showed that the adsorption of Pb2+ and Cu2+ was endothermic and spontaneous in nature and an opposite finding was observed for Ni2+ ions. In conclusion, the mode of interaction between Pb2+, Cu2+ and Ni2+ ions and OMSR was investigated by comparing the changes in the position and intensity of the surface functional groups using FTIR technique.
Languageen
PublisherElsevier
SubjectAdsorption isotherms and kinetic
SubjectChemistry and adsorption mechanisms
SubjectHeavy metals
SubjectOlive mill solid residues
SubjectRemediation
TitleCharacteristics of olive mill solid residue and its application in remediation of Pb2+, Cu2+ and Ni2+ from aqueous solution: Mechanistic study
TypeArticle
Pagination329-336
Volume Number251


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