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Destruction of cyanide waste solutions using chlorine dioxide, ozone and titania sol.
Waste Manag. 2003; 23(2):183-91.WM

Abstract

Increasingly, there are severe environmental controls in the mining industry. Because of lack of technological advances, waste management practices are severely limited. Most of the wastes in the milling industrial effluents are known to contain cyanides and it is recognized that after extraction and recovery of precious metals, substantial amounts of cyanide are delivered to tailings ponds. The toxicity of cyanide creates serious environmental problems. In this paper we describe several methods for the treatment of cyanide solutions. These include: (1) cyanide destruction by oxidation with chlorine dioxide (ClO(2)) in a Gas-Sparged Hydrocyclone (GSH) reactor; (2) destruction of cyanide by ozone (O(3)) using a stirred batch reactor, and finally, (3) the photolysis of cyanide with UV light in presence of titania sol. In all cases excellent performance were observed as measured by the extent and of the destruction.

Authors+Show Affiliations

Parga JR
Department of Metallurgy and Materials Science, Institute Technology of Saltillo, V. Carranza 2400, C.P. 25000, Saltillo, Coahuila, Mexico. jrparga@fenix.its.mx
Shukla SS
No affiliation info available
Carrillo-Pedroza FR
No affiliation info available

MeSH

Chlorine CompoundsColoring AgentsCyanidesMiningOxidants, PhotochemicalOxidation-ReductionOxidesOzoneTitaniumWaste Disposal, Fluid

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12623093

Citation

Parga, J R., et al. "Destruction of Cyanide Waste Solutions Using Chlorine Dioxide, Ozone and Titania Sol." Waste Management (New York, N.Y.), vol. 23, no. 2, 2003, pp. 183-91.
Parga JR, Shukla SS, Carrillo-Pedroza FR. Destruction of cyanide waste solutions using chlorine dioxide, ozone and titania sol. Waste Manag. 2003;23(2):183-91.
Parga, J. R., Shukla, S. S., & Carrillo-Pedroza, F. R. (2003). Destruction of cyanide waste solutions using chlorine dioxide, ozone and titania sol. Waste Management (New York, N.Y.), 23(2), 183-91.
Parga JR, Shukla SS, Carrillo-Pedroza FR. Destruction of Cyanide Waste Solutions Using Chlorine Dioxide, Ozone and Titania Sol. Waste Manag. 2003;23(2):183-91. PubMed PMID: 12623093.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Destruction of cyanide waste solutions using chlorine dioxide, ozone and titania sol. AU - Parga,J R, AU - Shukla,S S, AU - Carrillo-Pedroza,F R, PY - 2003/3/8/pubmed PY - 2003/6/19/medline PY - 2003/3/8/entrez SP - 183 EP - 91 JF - Waste management (New York, N.Y.) JO - Waste Manag VL - 23 IS - 2 N2 - Increasingly, there are severe environmental controls in the mining industry. Because of lack of technological advances, waste management practices are severely limited. Most of the wastes in the milling industrial effluents are known to contain cyanides and it is recognized that after extraction and recovery of precious metals, substantial amounts of cyanide are delivered to tailings ponds. The toxicity of cyanide creates serious environmental problems. In this paper we describe several methods for the treatment of cyanide solutions. These include: (1) cyanide destruction by oxidation with chlorine dioxide (ClO(2)) in a Gas-Sparged Hydrocyclone (GSH) reactor; (2) destruction of cyanide by ozone (O(3)) using a stirred batch reactor, and finally, (3) the photolysis of cyanide with UV light in presence of titania sol. In all cases excellent performance were observed as measured by the extent and of the destruction. SN - 0956-053X UR - https://www.unboundmedicine.com/medline/citation/12623093/Destruction_of_cyanide_waste_solutions_using_chlorine_dioxide_ozone_and_titania_sol_ DB - PRIME DP - Unbound Medicine ER -