Asaithambi, Perumal and Govindarajan, Rajendran (2021) Hybrid sono-electrocoagulation process for the treatment of landfill leachate wastewater: Optimization through a central composite design approach. Environmental Processes-an International Journal, 8 (2). pp. 793-816. ISSN 2198-7491, DOI https://doi.org/10.1007/s40710-021-00509-z.
Full text not available from this repository.Abstract
The effectiveness of the process of ultrasonication (US), electrocoagulation (EC) and hybrid sono-electrocoagulation (US+EC) on landfill leachate wastewater treatment was evaluated based on the removal efficiency of % color and % Chemical Oxygen Demand (COD) along with power consumption. The experimental results showed that the hybrid US+EC had a high color (100%) and COD (94%) removal efficiency with a lower power consumption of 4.50 kWh/m(3) compared to the individual EC and US processes. In this hybrid US+EC process, the effects of various operating parameters were investigated and optimized using Design-Expert (12) based on the central composite design approach. The optimization results indicated a maximum COD removal efficiency of 71.05% with a minimum power consumption of 2.33 kWh/m(3) at the following optimal experimental conditions: electrolyte concentration (X-1) = 0.76 g/L, current density (X-2) = 2.75 A/dm(2), COD concentration (X-3) = 3919.50 mg/L, sonication power (X-4) = 100 W and treatment time (X-5) = 36.05 min. The synergistic effect was calculated using the US, EC and US+EC process based on the % COD removal efficiency and has a positive effect of 20.51%. The % COD and % color removal efficiency were analyzed using a closed reflux method and UV-VIS spectrophotometer. Thus, the hybrid US+EC process, significantly enhances the efficiency of pollutants removal from landfill leachate wastewater.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Landfill leachate wastewater; Sono-electrocoagulation; % color and COD removal; Power consumption; Central composite design; Synergistic effect |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering |
| Divisions: | Faculty of Engineering > Department of Chemical Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 23 May 2022 08:09 |
| Last Modified: | 23 May 2022 08:09 |
| URI: | http://eprints.um.edu.my/id/eprint/34952 |
Actions (login required)
 |
View Item |
