Adsorption of Oil and Grease in Wastewater using Activated Carbon Derived from Sewage Sludge

Abstract Oil and grease are organic contaminants that detrimental to the environment. The high concentration of oil can cause clogging in sewer. Clogged sewers deteriorate sanitary conditions. Adsorption is one technique reduce wastewater. using natural resources overcome cost commercial activated carbon. Sewage sludge has potential as raw material for carbon because content. studies aim investigate capability derived from sewage remove restaurant were carried out batch experiment. Adsorbent dosage ranged 2-6 g/L, a contact time range 5-45 minutes was performed chemically KOH 4M physically at temperature 700°C 60 minutes. result shows optimum adsorbent 4 g/L 25 minutes, respectively. highest adsorption capacity 63.75 mg/g. Under observed data, fit second-pseudo-order, Langmuir isotherm indicated process chemisorption.