- Tytuł:
- The Performance of Electrocoagulation Process in Removing Organic and Nitrogenous Compounds from Landfill Leachate in a Three-Compartment Reactor
- Autorzy:
-
Bagastyo, Arseto Yekti
Sidik, Fahrudin
Anggrainy, Anita Dwi
Lin, Jr-Lin
Nurhayati, Ervin - Powiązania:
- https://bibliotekanauki.pl/articles/2027831.pdf
- Data publikacji:
- 2022
- Wydawca:
- Polskie Towarzystwo Inżynierii Ekologicznej
- Tematy:
-
current density
electrocoagulation
humic substance
stabilized leachate
wastewater treatment - Opis:
- 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 $NH_4^+$ was obtained, i.e., in the range of 72–81% and 43–59%, respectively. The ratio of $BOD_5$/$COD$ 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 $10^3$ 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 $99–148 Wh•g^{–1}$ $NH_4^+$. This could be decreased up to 50% at an applied current density of $20.83 mA•cm^{–2}$ with slightly lower efficiencies.
- Źródło:
-
Journal of Ecological Engineering; 2022, 23, 2; 235-245
2299-8993 - Pojawia się w:
- Journal of Ecological Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł