PEMANFAATAN ZEOLIT-BENTONIT SEBAGAI ADSORBEN FOSFAT DALAM AIR

One way to reduce phosphate levels in water is by adsorption. Adsorption considered as the best wastewater treatment method because main material, namely adsorbent, abundant and easy use. This research was conducted determine ability of zeolite combined with bentonite adsorb water, optimum time, pattern adsorption isotherms capacity. The studies included characterization adsorbent well its application various contact times concentrations. surface area adsorbents characterized methylene blue active site acid-base titration. specific ??each had almost same value, but largest combination zeolite: (1:1) which 45.9637 m2/g. 1.2842×1024 sites/g adsorbent. All : time 24 hours. (5:0) followed Langmuir isotherm pattern, while Freundlich pattern. Zeolite (5:0), (1:1), (0:5) capacity at concentration 100 ppm percentage adsorbed 96.66; 97.67; 97.02%, respectively, so it showed that most phosphate.
 Keywords: adsorption, bentonite, phosphate, zeolite.