Development of Bi-Langmuir model on the sorption of cadmium onto waste foundry sand: Effects of initial pH and temperature

Saad, NooraDepartment of Civil Engineering, Al-Nahrain University, Baghdad, Iraq (författare)

Development of Bi-Langmuir model on the sorption of cadmium onto waste foundry sand : Effects of initial pH and temperature

Validerad;2020;Nivå 2;2020-05-07 (johcin)
The present study develops the sorption model for simulating the effects of pH and temperature on the uptake of cadmium from contaminated water using waste foundry sand (WFS) by allowing the variation of the maximum adsorption capacity and affinity constant. The presence of two acidic functional groups with the same or different affinity is the basis in the derivation of the two models; Model 1 and Model 2 respectively. The developed Bi-Langmuir model with different affinity (Model 2) has a remarkable ability in the description of process under consideration with coefficient of determination > 0.9838 and sum of squared error < 0.08514. This result is proved by FTIR test where the weak acids responsible of cadmium ions removal using WFS sorbent can be represented by surface silanol (O-H) functional groups.

Ali, Ziad T. AbdDepartment of Environmental Engineering, College of Engineering, University of Baghdad, Iraq (författare)
Naji, Laith A.Department of Environmental Engineering, College of Engineering, University of Baghdad, Iraq (författare)
Faisal, Ayad A.A.H.Department of Environmental Engineering, College of Engineering, University of Baghdad, Iraq (författare)
Al-Ansari, Nadhir,1947-Luleå tekniska universitet,Geoteknologi(Swepub:ltu)nadhir (författare)
Department of Civil Engineering, Al-Nahrain University, Baghdad, IraqDepartment of Environmental Engineering, College of Engineering, University of Baghdad, Iraq (creator_code:org_t)

Ingår i:Environmental Engineering Research: Korean Society of Environmental Engineers25:5, s. 677-6841226-10252005-968X

Av författaren/redakt...: Saad, Noora; Ali, Ziad T. Abd; Naji, Laith A.; Faisal, Ayad A.A ...; Al-Ansari, Nadhi ...

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