Kinetika Adsorpsi Zat Warna Direct Brown Menggunakan Hidroksiapatit Dengan Va…

ABSTRACT Adsorption is a dye absorption process using various adsorbents. Dye waste produced by industry can pollute the environment because it is dangerous and toxic. Hydroxyapatite is a compound composed of calcium, phosphate, oxygen and hydrogen. This study uses calcium-deficient hydroxyapatite with Ca / P of more / less than 1.67 as the adsorption medium. Utilization of the adsorption …