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Chemical and Process Engineering Resources

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Category: Chemistry Basics
Question: What are some common precipitating agents used to remove metals from aqueous waste streams?
Keywords: precipitation,precipitating,metal,waste,streams,agents,common,commonly,used
Answer: Perhaps the most common agents used are:
  • Metal hydroxides
  • Lime or caustic soda
  • Metal sulfides
  • Alum or ferric salts
  • Phosphate or carbonate ions