7Hody D,Banstal P. Recovery of Residual Acids[J]. Tech Mod, 1988, 80(7-8):46-48.
8Rothe U. Recycling of Spent Acid in Titanium Dioxide Production[J]. Surf Coat, 1992,29(10):16,18-19.
9Schuiling R D,Van Herk J,Pitersen H S. A Potential Process for the Neutralization of Industrial Waste Acids by Reaction with Olivine[J]. Geol Mijinbouw, 1986, 65(3): 243-246.