Study of the Efficiency of Tuff and Modified JordanianNatural Zeolite to Remove the Iron Ions (Fe+2)offAqueous Solutions
published by Tishreen University
in 2013
in
and research's language is
العربية
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Abstract in English
The possibility of using tuff and modified Jordanian naturalzeolite to remove the iron
ions, a model component of heavy metals in underground water, off aqueous solution were
studied. Bench-scale process was used to remove the iron ions off standard solutions and
real under ground water. Different parameters affected the ion exchange have been
investigated, such as concentration, modifier type and PH. Zeolite characterizations
weredetermined as XRD, XRF, BET, TGA, andFTIRmethods.We found that the modified
zeolite with sodium chloride had more effect than other salts and the iron ions exchange
efficiency depends on concentration.Zeolite efficiency was affected by PH value. Time of
sorption equilibrium achieved within 250 min. The results agree with Langmuir model.
References used
It has been found that modified zeolitic tuff treated with chemicals can increase iron removal efficiency as ion exchange capacity is increased
Sodium treated zeolitic tuff has the maximum exchange capacity among other types of calcium and acid treated zeolites
Extended exposure of philipsite samples to concentrated sodium solutions has been found to be ineffective in displacing all the cation ions from this zeolite, and the sample may require extensive conditioning over several days, with high concentration of selected cation to obtain the homoionic form