ADSORPSI-DESORPSI ZAT WARNA NAFTOL BLUE BLACK MENGGUNAKAN ADSORBEN HUMIN HASIL ISOLASI TANAH GAMBUT RIAU, SUMATERA

Abstract

Adsorption-desorption of naphtol dye had been done by using humin adsorbent wich was taken from peat isolation in Riau, Sumatera. The adsorption method had not completely solved the environmental issue because the adsorbent that had been used could be a new waste, so the desorption process was needed for the adsorbent could be reused. The adsorption percent value of naphtol blue black dyes in this study was 75.91%. The desorption process used NaCl with some concentration varieties of 0.1, 0.2, 0.3, 0.4 and 0.5 M, and desorption of optimum naphtol blue black dyes at a concentration of 0.3 M with desorption yield percentage of 11.65%.