Characterization of RHA /PFA/CFA Adsorbent and Its Equilibrium and Kinetic Studies for Zn2+ Removal
Journal Title: Caspian Journal of Applied Sciences Research - Year 2012, Vol 1, Issue 13
Abstract
Zinc removal was investigated by adsorption using a mixture of rice husk ash (RHA), palm oil fuel ash (PFA) and coal fly ash (CFA). Sol-gel method was used in the preparation of RHA/PFA/CFA adsorbent. In this study, the physical and chemical characterization of RHA/PFA/CFA adsorbent was investigated to obtain a better understanding of zinc adsorption process. The particle size distribution of RHA/PFA/CFA adsorbent was found to have a variation as a result of the reaction during the preparation and during treatment processes. The SEM micrograph results revealed the structure of RHA/PFA/CFA adsorbent before and after the adsorption processes. X-ray diffraction analysis indicated the formation of component phases in the sorbent and NaNO3 became the major content in the RHA/PFA/CFA adsorbent. In addition, various specific surface functional groups were formed in the RHA/PFA/CFA adsorbent before and after the adsorption processes. Thus, it is concluded that the physical and chemical characteristics of RHA/PFA/CFA adsorbent affecting the adsorption of zinc. Also, equilibrium data were adapted to adsorption isotherm and kinetic studies. The equilibrium data were best described by Freundlich isotherm model. RL value which indicates the type of Langmuir isotherm is favorable for RHA/PFA/CFA adsorbent. For adsorption kinetic, the adsorption kinetics obeys a pseudo-second-order model.
Authors and Affiliations
Haider Zwain, Irvan Dahlan
Keywords
Related Articles
- EP ID EP135476
- DOI -
- Views 108
- Downloads 0
Environmental noise pollution in Erbil City, Iraq: Monitoring and solutions
For the past fifteen years, rapid development and the increase of number of vehicles caused escalating of noise problems in Erbil City (the capital city of Iraqi Kurdistan Region). To examine the noise pollution level in...
Re-submitted Chain ChSP-4(c1,c2) Sampling Plan
Vidya (2008) proposed the chain sampling plan ChSP-4 (c1,c2) and determined the plan parameters by minimizing the variance and VOQL. In this paper, ChSP-4 (c1,c2) plan is presented under the re-submitted sampling p...
Feed Intensity of Characidae Fish in the Jebel Aulia Reservoir in Sudan
This study was conducted from November 2007 to October 2008 into the two main fishing sites in Jebel Aulia Reservoir; this was Jebel Aulia site (45kms) south Khartoum city) and Kosti site about 355 km southward Kha...
Application of Complex Surfactant Based on Cottonseed Oil as CO[sub]2[/sub]-Corrosion Inhibitor and for Removing Thin Oil Slicks from Water Surface
The corrosion inhibition and adsorption behavior of sulfated fatty acid diethanolamine (SFADC) as complex surfactant on carbon steel in CO2-saturated 1% NaCl solutions was investigated using LPR corrosion rate. Inhibitor...
Triangular Symmetric Decomposition Method for Solving Fully Fuzzy Linear System
In this paper we discuss the Triangular symmetric (TS) decomposition of the coefficient matrix of the 2 x 2 fully fuzzy linear systems whose coefficients are triangular fuzzy numbers. By this decomposition every non-sing...