Evaluation of the Efficiency of Electrocoagulation for the Removal of Turbidity and TSS in Laboratory Greywater

Mariely Mancilla Herrera N.; Dayana Sanchez Huancuco O.; Alvarado Ojeda B.; Joaquin López Abrill F.; Elena Choquehuanga Peña M.; Alexandro Cueva Estrella J.; Gabriel Hurtado D. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2026) · DOI: 10.18687/laccei2026.1.1.358

Resumen

The present study aimed to optimize the removal of turbidity and total suspended solids (TSS) through an electrocoagulation (EC) process assisted by a biocoagulant derived from Cicer arietinum, for graywater from a chemistry laboratory. To this end, a prototype EC cell with a parallel monopolar configuration was constructed and implemented, using two aluminum electrodes as anodes and a steel electrode as the cathode, connected to the power source. The Response Surface Methodology with a Box-Behnken Design (BBD) was applied to evaluate the significant effect of the biocoagulant dose, water pH, and current intensity on the optimization of removal efficiency. The results demonstrate a maximum removal of 94,80 % for turbidity and 92,50 % for TSS. These efficiencies are achieved under optimal conditions, with a biocoagulant dose of 1000 mg/L, a pH of 5,09, and a current intensity of 0,70 A, whereas for TSS, a dose of 1000 mg/L, a pH of 6,18, and the same current intensity of 0,70 A are required.

Instituciones: Universidad Privada del Norte