PL EN
The Performance of Electrocoagulation Process in Removing Organic and Nitrogenous Compounds from Landfill Leachate in a Three-Compartment Reactor
 
Więcej
Ukryj
1
Department of Environmental Engineering, Faculty of Civil, Planning, and Geo-Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
2
Research Centre for Infrastructure and Sustainable Environment, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
3
Department of Environmental Engineering, Chung Yuan Christian University, Chung-Li, Taiwan, R.O.C.
4
Center for Environmental Risk Management, College of Engineering, Chung Yuan Christian University, Chung-Li, Taiwan, R.O.C.
AUTOR DO KORESPONDENCJI
Arseto Yekti Bagastyo   

Department of Environmental Engineering, Faculty of Civil, Planning, and Geo-Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
Data publikacji: 01-02-2022
 
J. Ecol. Eng. 2022; 23(2):235–245
 
SŁOWA KLUCZOWE
DZIEDZINY
 
STRESZCZENIE
In this study, the effectiveness of the electrocoagulation (EC) process was evaluated based on the reduction of organic and nitrogenous contaminants in landfill leachate. A three-compartment electrochemical reactor as pre-treatment of stabilized landfill leachate was carried out ahead of biological treatment. The removal efficiencies of COD, BOD, ammonia, and nitrate were analyzed at pH 4, 6, and 8 with the current densities of 20.83 and 29.17 mA cm–2. At pH 4, the highest removal of COD and NH4+ was obtained, i.e., in the range of 72–81% and 43–59%, respectively. The ratio of BOD5/COD was increased after EC, from initially 0.11 to 0.32 at pH 4. In addition, EC effectively removed humic substances in the leachate by targeting a large amount of high molecular weight humic substances, with around 103 kDa. However, the higher removal efficiency observed at higher current density leads to higher specific energy consumption. At a current density of 29.17 mA cm–2, the specific energy consumption obtained in EC was around 10–17 Wh g–1 COD and 99–148 Wh g–1 NH4+. This could be decreased up to 50% at an applied current density of 20.83 mA cm–2 with slightly lower efficiencies.