title: Ammoniacal nitrogen and COD removal from semi-aerobic landfill leachate using a composite adsorbent: fixed bed column adsorption performance.
abstract: The performance of a carbon-mineral composite adsorbent used in a fixed bed column for the removal of ammoniacal nitrogen and aggregate organic pollutant (COD), which are commonly found in landfill leachate, was evaluated. The breakthrough capacities for ammoniacal nitrogen and COD adsorption were 4.46 and 3.23 mg/g, respectively. Additionally, the optimum empty bed contact time (EBCT) was 75 min. The column efficiency for ammoniacal nitrogen and COD adsorption using fresh adsorbent was 86.4% and 92.6%, respectively, and these values increased to 90.0% and 93.7%, respectively, after the regeneration process.
authors: School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia. aah@medic.ukm.my
authors: Azhar Abdul
authors: AA
authors: Halim
authors: Hamidi Abdul
authors: HA
authors: Aziz
authors: Megat Azmi Megat
authors: MA
authors: Johari
authors: Kamar Shah
authors: KS
authors: Ariffin
authors: Mohd Nordin
authors: MN
authors: Adlan
mesh_terms: D000327:Adsorption; D000332:Aerobiosis; D000641:Ammonia / Q000737:chemistry*; D001673:Biodegradation, Environmental; D019149:Bioreactors; D009584:Nitrogen / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*; D012989:Soil Pollutants / Q000302:isolation & purification; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods; D014873:Water Pollutants / Q000302:isolation & purification; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods
chemical_list: D012989:Soil Pollutants; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D000641:Ammonia; D009584:Nitrogen; D010100:Oxygen