SPENT COFFEE GROUNDS BIO CHAR AS A LOW-COST ADSORBENT FOR METHYLENE BLUE REMOVAL FROM AQUEOUS SOLUTION: OPTIMISATION USING RESPONSE SURFACE METHODOLOGY

by Mohamad, M., Wannahari, R., Azzahra Ahmad Kamal, A., Mohammad, R., Che Zaudin, N.A., Shwu Hwa, C., Wei, L.J.
Published 2020