Electrochemical disinfection of drinking- and industrial water or for production of disinfectant concentrates from water with high hard contents using electrolysis cells with anodes, comprises flowing anode space by water to be treated
DE102009004155A1
Process and apparatus for regenerating peroxodisulfate pickling solutions
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High capacity electrolytic cell for producing an ozone-oxygen mixture
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Electrolytic recovery of pure copper sulfate solution from impure process solution, deposits copper on cathode, replaces process solution with pure sulfuric acid, then reverses current
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Oxidative electrochemical treatment of aqueous solution, comprises using an anode solid electrolyte combination containing an insoluble anode, which is pressed with a solid electrolyte membrane or laminated
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Etching process, for producing finely-structured printed circuit boards, uses etching solution containing copper chloride, iron chloride and hydrochloric acid, exhausted solution being treated in regeneration cell after adding more copper
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Decolorizing process solutions and waste waters from textile and dye industries, by electrolysis in cell with diamond-coated anodes in presence of sulfate, forming peroxodisulfate causing further decolorization
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Electrolysis cell with multilayer expanded metal cathodes
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Process for regeneration of acid chloride etching solutions containing copper and/or iron chloride as oxidizing agents involves cathodic separation of dissolved copper from catholyte solution with pumping of anolyte through two-part cell
CN1505699A
Method for simultaneous electrochemical production of sodium dithionite and sodium peroxodisulfate
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Method and device for recovering metals, also in combination with anodic coupling processes
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Electrochemical disinfection of water, e.g. drinking, industrial and waste water, involves passing sub-streams in parallel to anode and cathode segments of array of electrode plates, spacers and separator membranes
DE19962672A1
(Re)generation of peroxodisulfate, useful as polymerization initiator or pickle, oxidant or bleach in chemical, metal-working or electronics industry, uses two-part cell divided by combined microporous and anion exchange membranes
DE19954299A1
Simultaneous production of sodium peroxodisulfate and sodium dithionite, useful as bleach, e.g. for pulp, involves anodic oxidation of sodium sulfate in cell with cation exchange membrane and sodium dithionite formation in cathode chamber
DE19850524A1
Nitrate-free recycling pickling process for stainless steels
DE19850530A1
Circulation process for pickling copper and copper alloys
DE19850525A1
Regeneration of sulfuric acid-iron(III) sulfate pickling solution, used especially for special steels, involves perdisulfuric acid production in a spent solution electrolysis cell
DE19850235A1
Base metals are recovered from acidic process solutions, especially electroplating, pickling or waste solutions, by dosing into a circulating catholyte of a divided electrolysis cell
DE19826467A1
Electrochemical production of magnesium peroxodisulfate used as active ingredient in oxidation agents and in disinfectants is carried out using magnesium sulfate as anolyte and sulfuric acid as catholyte
DE19719659A1
Process for controlling pickling baths for copper(alloys)
