Premium
Recovery of Ionic Substances from Wastewater by Seeded Reaction Crystallization
Author(s) -
Shimizu Y.,
Hirasawa I.
Publication year - 2012
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201100647
Subject(s) - crystallization , supersaturation , seeding , wastewater , fluoride , seed crystal , ion , impurity , phosphate , materials science , chemical engineering , ionic bonding , chemistry , chromatography , inorganic chemistry , environmental engineering , organic chemistry , crystallography , thermodynamics , environmental science , single crystal , engineering , physics
Crystallization is a suitable process for selective separation of a target ion since ions can be removed and recovered as purified and stable materials. Methods of recovery and recycling of phosphate and fluoride ions have been investigated to determine the optimum crystallization conditions like supersaturation, temperature, pH, impurities, and kind of solvents. As a result, by selecting the optimum crystal operation conditions for each wastewater composition, spherical‐shape crystals with desired purity and size are obtained and generation of sludge is minimized.