A comparative study between hybrid natural/biodegradation and biodegradation methods of cyanide from ore waste using native bacteria

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The aim of this research was to carry out a comparative and systematic study of the degradation of cyanide by hybrid natural/biodegradation and biodegradation methods using a mixture of Pseudomonas sp and Bacillus megaterium native bacteria. Bioreactors consist of filled columns with contaminated ore containing 100 ppm of total cyanide. In the biodegradation tests a mixture of bacteria was inoculated into the biodegrading solution. Results of cyanide degradation show a similar asymptotic behavior in both the hybrid (opened system) and biodegradation (closed system) methods; however, for the same period of time (72 h) the permissible maximum levels (1-2 ppm of cyanide) are only attained in the closed system. While in the closed system the cyanide levels are reduced from 100 to 1.5 ppm, in the open system, cyanide decreases from 100 to 2.4 ppm.
Original languageSpanish (Mexico)
Title of host publicationProceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008
Pages1761-1765
Number of pages5
StatePublished - 2008

Publication series

NameProceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008

Cite this

Leal-Cruz, A. L., Certucha-Barragán, M. T., Pech-Canul, M. I., Aguayo-Salinas, S., & Valenzuela-García, J. L. (2008). A comparative study between hybrid natural/biodegradation and biodegradation methods of cyanide from ore waste using native bacteria. In Proceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008 (pp. 1761-1765). (Proceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008).