Disposal of waste aqueous boron trifluoride solutions

摘要

Boron trifluoride wash water from an olefin oligomerization process can be disposed of in an environmentally safe manner by hydrolysis to substantially eliminate fluoroborate anions (BF4-), mixing with CaO or Ca(OH)2 and concentration in any sequence followed by mixing with portland cement and solidification. The cured cement is highly resistant to aqueous leach of boron and fluorine containing products.