Magnetically Assisted Electrocoagulation Combined with Zeolite: Opportunities and Challenges in Compost Wastewater Treatment

Magnetically assisted electrocoagulation combined with zeolite (ECZ-MAG) was investigated for the first time as a hybrid treatment method. Influence of the magnet assistance (ECZ-MAG vs. ECZ), the contact time of 10–30 min, and the initial pH values (without and with pH adjustment at pH = 3.72) were investigated. The assistance of magnet NdFeB increases the fouling of the carbon steel electrodes. Both hybrid types allow 80–100% recovery of the powder saturated zeolite for further regeneration. Taguchi optimisation highlight contact time is the most important factor for COD reduction, settling velocity and electrodes consumption, while magnet assistance is the most important factor for voltage consumption.