Nanocatalytic Wastewater Treatment System for the Removal of Toxic Organic Compounds

Synergistic Removal of Cr(VI) with Stable Nanozerovalent Iron Particles and Ultrasound Assistance in the Presence of Organic Additives

“…Although the combination of sonolysis with nZVI for the treatment of pollutants presents several examples in the literature, − only four publications refer to Cr(VI) reduction by the US-nZVI combination and report an improvement on Cr(VI) removal rate and/or capacity. ,,, The parameters affecting the Cr(VI) removal, such as US frequency, power, temperature, initial pH, and Cr(VI) concentration, were investigated and a mechanism was proposed . Another paper studied the Cr(VI) removal with a nZVI material prepared using US (20 kHz) during the synthesis; these nanoparticles had a higher specific surface area compared with the ones prepared in the absence of US and have been found very effective for Cr(VI) removal …”