Radial growth of polymeric Fe/S rods for improving removal of Cu/Zn from real electroplating wastewater
College of Forest Resources and Environmental Science
A mass production of one-dimensional polymeric Fe/S rod with 200 nm diameter and 300 nm length was developed under atmosphere conditions with FeCl3 and Na2S/NaOH. When such Na was partly/fully replaced by K, the polymeric Fe/S rod grow radially alongside the lattice planes of 020 and 221 from 300 nm to 1 µm and/or 5–10 µm, respectively, to form a long rod. In the long rod, such Na/K occupied the charged sites of Fe/S structure and can be replaced by each other in an alkaline solution with the retention of log-rod shape. The long rods showed superior efficiencies of Zn/Cu removal (nearly 100 %) from real electroplating wastewater, compared with short rods and other reagents, e.g., diethyldithiocarbamate and polymeric ferric sulfate. The processing method allows not only the development of a clean production to recycle the K and that used alkaline supernatant for preparing long rods without any secondary waste, but also posed the application prospect of long rods in wastewater treatment.
Materials Today Communications
Radial growth of polymeric Fe/S rods for improving removal of Cu/Zn from real electroplating wastewater.
Materials Today Communications,
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