Electrodialysis Application
Colloidal Silica Manufacture
Phase Transfer Catalysts Manufacture
Desalination of fruit juice
Removal of tartaric acid from wineDesalination of pharma / chemical intermediates
Desalination of cheese whey
Desalination of soy sauce
Production of amino acids from amino acid salts
Desalination of starch sugar, soybean saccharide, xylose and xylito desalination
Acid recovery from stainless steel pickling effluent
Recovery of electroplating solutions
Production of acid and alkali from inorganic salts/industrial waste streams
Acid recovery of aluminum foil pickling process
Production of organic acid from organic acid salt
Acid recovery of stainless steel pickling process.
Pickling is a unit operation within stainless steel production, which means treating the steel with hydrofluoric acid (HF), and nitric acid (HNO3), also called mixed acid. The whole process generates waste water streams which have to be treated before release.
Bipolar Electrodialysis is applied for acid recovery (HNO, and HF) from spent pickling acid produced in the steel manufacturing process. Bipolar electrodialysis technology has the ability to recover acid from the spent acid for reuse in process. Almost no effluent is produced because all the streams generated during the BED process can be reused. Nitric acid recovery and Hydrofluoric acid recovery of approximately 80 percent can be obtained.