The Syrian natural zeolite from om'ozon area has been studied as adsorbent for Ni(II) ions from aqueous solution. The removal of Ni(II) ions under different conditions was studied adsorption of Ni(II) enhanced with an increase of initial concentratio
n, temperature and PH .all experiments were carried out at contact time 6h.
The amount of Ni(II) adsorption was increased from 16.36 mgNi/g for initial solution concentration of 100mg Ni/l to 71.33 mgNi/g (for C0=1000mgNi/L). The experimental data fitted well to Langmuir isotherm. The maximum capacity was qmax=142.85mgNi/g Adsorption amount at 298K varies from 16.36mgNi/g for initial solution concentration of 100mg Ni/l to 47.93mg Ni/g(for C0=400mgNi/L) and it increases at 333K to 16.65 mgNi/g and 51mgNi/g (for C0=100 and 400 mg Ni/L )respectively. The adsorption of Ni(II) ions was increased by increasing PH up to ~ 5 and then stabilized up to PH=6 and after that the precipitation process was accured.
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.
