new technologies zinc removal wastewater treatment in italy

new technologies zinc removal wastewater treatment in italy
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  • How much zinc is in a wastewater treatment plant?
  • Studies have shown that out of 162 wastewater treatment plants in the UK, in 50% of cases, the level of zinc in the effluent stream was higher than the recommended level set by the Environment Agency (0.017 ppm or 0.26 mM) (W.F.D., 2013).
  • How important is zinc concentration in removing metal ions from industrial wastewater?
  • When it comes to extracting metal ions from industrial wastewater, the initial zinc concentration is crucial. Fig. 4, Fig. 5 show the effect of initial Zinc concentration on the percent removal efficiency.
  • How is zinc recovered from the cathode?
  • Zinc recovery from the cathode, total removal from the catholyte and the removal efficiency in MFCs using actual wastewater. To achieve further Zn recovery, the collected Zn (OH) 2 would be re-dissolved in an acidic solution to obtain higher concentration.
  • Can microbial fuel cells remove zinc from industrial effluents?
  • Microbial fuel cells (MFCs) that simultaneously remove organic contaminants and recovering metals provide a potential route for industry to adopt clean technologies. In this work, two goals were set: to study the feasibility of zinc removal from industrial effluents using MFCs and to understand the removal process by using reaction rate models.