Ammoniacal nitrogen and COD removal from semi-aerobic landfill leachate using a composite adsorbent: fixed bed column adsorption performance.
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.
Halim
Azhar Abdul
AA
School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia. aah@medic.ukm.my
Aziz
Hamidi Abdul
HA
Johari
Megat Azmi Megat
MA
Ariffin
Kamar Shah
KS
Adlan
Mohd Nordin
MN
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
D012989:Soil Pollutants; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D000641:Ammonia; D009584:Nitrogen; D010100:Oxygen