“…The most extensively used material is granular zerovalent iron (ZVI), which is used as a reducing agent. − , However, other materials have also been used. Weng, and recently Yeung and Gu, reported extensive reviews about the current research that couples EK and PRB to remediate soils, including different pollutants and PRB materials. For instance, heavy metals such as As, Cr, Cd, and Ni have been removed from soils by coupling EK/PRB using ZVI, , atomising slag, carbonized food waste, calcined hydrotalcite, and activated carbon .…”