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 standar
d 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.
The enzyme was characterized by the following: Its molecular weight was 97
KD as estimated by gel filtration, iso electric point was at 6.2. The result
showed that it was a glycoprotein with a carbohydrate content of 13 % as
determined by phenol –
sulfuric acid method.
