The waste free method of utilizing asbestos and the products containing asbestos

• Autorzy: Trefler B. , Pawełczyk A. , Nowak M.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the problems related to the use of asbestos and the asbestos containing materials as well as the methods of the neutralization of the waste asbestos developed after enforcing the limitations and bans on this material. A new method elaborated by the authors consists in the digestion of the asbestos wastes in a strongly acidic environment of the phosphoric acid with such a concentration of hydrogen ions that it assures maintaining all the originating phosphates in the soluble form. Thus, all phosphates, mainly calcium and magnesium ones, can easily be separated from the solid residue and processed to other products. After the neutralization with calcium hydroxide or calcium carbonate the solution can be processed to fodder phosphates (MCP or DCP type) or to phosphate fertilizers - triple superphosphate (TSP) or to dicalcium phosphate. The chemical analyses as well as the microscopic observations carried out, showed that no asbestos fibers were present in the liquid as well as in the solid products obtained in the laboratory scale tests.

Słowa kluczowe

EN

asbestos; phosphate fertilizer; fodder phosphate

PL

azbest; nawozy fosforowe

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2004
• Tom: Vol. 6, nr 4
• Strony: 60--63
• Opis fizyczny: Bibliogr. 11 poz., tab., rys.

Twórcy

autor

Trefler B.

• Institute of Inorganic Chemistry, ul. Sowińskiego 11, 44-100 Gliwice

autor

Pawełczyk A.

• Wrocław University of Technology, Institute of Inorganic Technology and Mineral Fertilizers, Wrocław

autor

Nowak M.

• Institute of Inorganic Chemistry, ul. Sowińskiego 11, 44-100 Gliwice

Bibliografia

• (1) Dziennik Ustaw 1997 No 101, poz. 628.
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• (7) Chou S., Asbestos decomposition, Pat. USA No 4818143, 4.04.1989.
• (8) Mirick W., Method for treating asbestos, Pat. USA No 5041277, 20.08.1991.
• (9) Pawełczyk A., Czarny A., Trefler B., Zaczyńska E., Effect of products obtained in the process of chemical neutralization of asbestos wastes on human lung cells. Chemistry for Agriculture., Ed. By H. Górecki, Z. Dobrzański & P. Kafarski, CZECH-POL TRADE, Prague-Bruxelles-Stockholm, 2003, vol.4, 522 - 527
• (10) Trefler B., Pawelczyk A., Zwoździak J., Nowak M., Paszek A., Czarny A., Waste-free method of utilization of asbestos and asbestos containing materials, Polish Patent Appl. No P-359958, 2003.
• (11) Pawelczyk, A., Czarny A., Trefler B., Zaczyńska E., Effect of products obtained in the process of chemical neutralization of asbestos wastes on human lung cells, Chemistry for Agriculture., Ed. by H. Górecki, Z. Dobrzanski & P. Kafarski, CZECH-POL TRADE, Prague-Bruxelles-Stockholm, 2003, vol. 4, , 522 – 527.