Water-loop closure in an aluminium anodizing plant

Coagulant Recovery from Water Treatment Residuals: A Review of Applicable Technologies

“…ED has not been tested for CR but is a well-established concept in the recovery of cations (nickel, copper, aluminum, and acid) in the electroplating and anodizing industries (Lancy and Kruse, 1973;Itoi et al, 1980;Franken, 2003;Agrawal and Sahu, 2009). ED has been employed to create closedloop electroplating processes which offer similar reductions in waste and chemical requirements to CR.…”

“…However, ED reversal, pulsing, and cleaning have been implemented to control fouling when analogous streams are treated with ED (Lee et al, 2002(Lee et al, , 2003Strathmann, 2010). Using these methods, successful ED treatment of aluminum-containing solutions has been documented, although with a focus on acid rather than metal recovery (Franken, 2003). ED-based processes have also been used to desalt organic-rich fermentation broths, demonstrating that the problem of organic fouling can be managed (Lee et al, 2003).…”