Optimasi Pengaruh Waktu Kontak dan Dosis Adsorben Limbah Daun Kayu Putih (Melaleuca cajuputi) dengan Metode Isoterm Adsorpsi Langmuir

Liquid waste from the textile industry contains harmful dyes that can damage environment. Pollution to environment be minimized by processing dye before being discharged into rivers or sewers. The treatment process carried out using adsorption method. adsorbent used was non-activated and acid-activated eucalyptus leaf (HCl 2 M). solution as adsorbate is malachite green. This study aims optimize absorbance level of (Melaleuca cajuputi) against green Langmuir isotherm variables are mass variation adsorbent, contact time model. absorption efficiency value produced with M HCl activation 87.4279%. Meanwhile, 86.0290%. For variations 10 minutes, 15 minutes 20 on activated resulted in an 0.026; 0.022; 0.02. Based graph relationship between Ce Ce/Qe for R2 obtained at 0.7039 while 0.966. So, without a carbonization process, only needs given acid solution.