This research expected able to exploit zeolite as adsorber to permeate ion Ca 2+ and Mg 2+ which
implied in sea~:'vater cause of kesadahan causing can be exploited and further trick and can be
application at industrial scale. In th~ research applied research method in batch. Before applied for .
zeolite adsorbent beforehand is activated applies NaOH IN Activ! has zeolite is mixed with sea-water
then is done squealer. As for condition used in th'ts research is condition specified number of sea-waters,
zeolite weight and squealer speed While condition done by zeolite particle size and squealer time, Based
on research result done, best condition obtained at zeolite particle size JOO meshs with squealer time 75
minutes, yields calcium rate (Ca2+) 909,25 mglliter and Magnesium ( Mg2+)
565,9 mglliter
