IRON-CONTAINING SLIME AS SOLID BASE FOR NEUTRALIZATION OF ACID SOLUTIONS AND DEPOSITION OF LOW-SOLUBLE HYDROXIDES

摘要

Interaction between iron-containing slime and acids (HClO_4, HCl, H_2SO_4, HF, CH_3COOH, HNO_3) is studied via the method of pH-metric heterogeneous titration of water suspension. Calculation technique for determination of concentration of basic centres on the surface of slime particles is proposed and hypothesis about nature of observing acid-basic interaction is suggested. Possibility of deposition of hydroxides of multi-charge cations of d-elements (sorption) on slime surface is examined.