عرض بسيط للتسجيلة

المؤلفBouabidi Z.B.
المؤلفEl-Naas M.H.
المؤلفCortes D.
المؤلفMcKay G.
تاريخ الإتاحة2020-02-05T08:53:04Z
تاريخ النشر2018
اسم المنشورChemical Engineering Journal
المصدرScopus
الرقم المعياري الدولي للكتاب13858947
معرّف المصادر الموحدhttp://dx.doi.org/10.1016/j.cej.2017.10.073
معرّف المصادر الموحدhttp://hdl.handle.net/10576/12674
الملخصThe presence of high concentrations of toxic heavy metals such as lead Pb(II) in water is a major hazard to human health and may have a detrimental effect on the aquatic life and the environment. Implementing an efficient and economical treatment method for the reduction of Pb(II) is a major challenge that is being addressed through employing such processes as adsorption, utilizing low cost adsorbents. In this study, Steel-Making dust obtained from a local Steel Factory was utilized for the adsorption of lead Pb(II) from an aqueous solution. The determination of optimum pH condition, adsorption isotherms and kinetics studies were carried out. The experimental data were fitted to five different isotherms, including Langmuir, Freundlich, Sips, Dubinin-Radushkevich and exponential models; while the kinetic data were fitted to Pseudo-first order, Pseudo-second order, Elovich's and intraparticle diffusion models. The fitting of the isotherm experimental data to the five isotherm models was compared through the Akaike Information Criterion (AIC). The Dubinin-Radushkevich model was found to best describe the experimental data for the adsorption of lead ions onto Ladle furnace and cyclone steel dust with high Akaike weight (wi) of 0.91 and 0.83, respectively. The optimum pH range was found to be around 4-5; working within this range prevents lead precipitation during the adsorption process. The maximum adsorption capacity for lead on Steel Dust as obtained from the Langmuir isotherm was 208.9 mg/g for the Ladle Furnace steel dust, and 39.8 mg/g for the Cyclone steel dust. Overall, the Steel-Making dust gave a high efficiency for the reduction of lead concentration in the aqueous solutions and thus could be utilized in industrial adsorption processes. 2017 Elsevier B.V.
راعي المشروعThe authors would like to acknowledge the financial support provided by Qatar University to Zineb in terms of Graduate Assistantship. They also appreciate the help and continuous support of the Gas Processing Center.
اللغةen
الناشرElsevier B.V.
الموضوعAdsorption isotherms
Akaike Information Criterion
Heavy metals
Kinetic models
Water treatment
العنوانSteel-Making dust as a potential adsorbent for the removal of lead (II) from an aqueous solution
النوعArticle
الصفحات837-844
رقم المجلد334
dc.accessType Abstract Only


الملفات في هذه التسجيلة

الملفاتالحجمالصيغةالعرض

لا توجد ملفات لها صلة بهذه التسجيلة.

هذه التسجيلة تظهر في المجموعات التالية

عرض بسيط للتسجيلة