Optimized Cost-Effective Electrocoagulation Reactor Cell Designed with Effective Parameters for The Removal of Cadmium from Actual Landfill Leachate Samples

Yari, Abdollah

doi:10.22034/abec.2025.725971

Optimized Cost-Effective Electrocoagulation Reactor Cell Designed with Effective Parameters for The Removal of Cadmium from Actual Landfill Leachate Samples

Document Type : Original Article

Author

Abdollah Yari

Department of Analytical Chemistry, Faculty of Chemistry, Lorestan University 68151-44316 Khorramabad, Iran

10.22034/abec.2025.725971

Abstract

In this research, an innovative cost-effective electrocoagulation (EC) reactor cell was designed with optimized effective parameters for effectiveness of EC technique in the removal of cadmium (Cd) from landfill leachate samples. This was achieved by employing cheap aluminum and stainless steel plates as suitable electrodes, and using solar cells for power, which not only made the system more sustainable but also aided in saving operational costs. The study also discovered that the efficiency of Cd removal from a landfill leachate sample was improved by controlling the current density, adjusting the pH of the solution, optimizing the concentration of supporting electrolyte, and optimum fixing the distance between the electrodes. The results suggested that the optimal operating conditions for the removal of Cd from the raw leachate were current density of 6.0 A/m2, duration time of 40 min, concentration of supporting electrolyte of 2000.0 mg/L NaCl, and the initial pH 8.5. The laboratory experiments showed that the treated samples were free of Cd in all trials, with a removal rate of about 99%. This approach provides a scalable, relatively low-cost method for tackling Cd pollution, an issue that is a big deal given Cd’s toxicity and the strict regulatory limits on its discharge.

Keywords

Cadmium

Electrocoagulation

Wastewater

Landfill leachate

Pollution

Subjects