Suyanta S, Kholid HI, S B. SEPARATION OF Ca AND Fe METAL ION IN SOURCE WATER BY ADSORPTION COLUMN TECHNIC WITH LOCAL ZEOLITE AND ACTIVE CARBON. J.Sains Dasar [Internet]. 2016 Apr. 13 [cited 2025 Oct. 10];4(1). Available from: https://journal.uny.ac.id/index.php/jsd/article/view/8446