Abstract

A. S. Tleuov, S. D. Arystanova, S. T. Tleuova, Zh. M. Altybayev and A. Zh. Suigenbayeva

DOI : http://dx.doi.org/10.13005/ojc/320529

One of the actual problems of the phosphoric industry is complex usage of all got raw materials and processing of technogenic waste with receiving products. One of the main waste of phosphoric production are the phosphorus-containing sludges which are formed on stages of condensation of vaporous phosphorus. Despite numerous researches on suppression and processing of phosphoric sludges, today the universal way of their processing meeting the requirements of phosphorus production isn't found yet. In this regard, we offer a sorption method of phosphorus release from phosphorus-containing sludges. Various alumosilicate minerals, including bentonites, vermiculites, refractory clays, etc. can act as sorbents. The specified minerals possess high sorption ability with an advanced surface. Results of thermodynamic researches of heterogeneous system phosphorus - water - solid mineral impurity are given. The thermodynamic probability of the main of reaction and systems characteristic for sorption process of phosphorus release from sludges is shown. For modifying the surface of minerals of the montmorillonite group entering into bentonites and vermiculites acid activation is used. For increase in hydrophilic surface of minerals are considered exchange cations of Al⁺³, H⁺, Na⁺. It is shown that hydrophilic materials can be received at normal saturation by exchange cations. At its supersaturate hydrophily can reach initial (before processing) values.

sorbents; vermiculite; bentonite; montmorillonite; thermodynamics; acid activation; hydrophily

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