Escuela de Ingeniería Bioquímica

CO2 supply at 4% (v/v) in air increased the biooxidation of a gold concentrate (41% enargite, 43% pyrite) with Thiobacillus ferrooxidans in a 2-l bioreactor at 4% (w/v) solids concentration, 35°C and pH 2.4. Extraction increased from 21 to 69% for Fe, 19 to 25% for As, and 16 to 19% for Cu. Suspended biomass increased from 2.6·107 to 1.2·108

Microbial leaching processes are being considered as an economical and technically viable alternative for processing low-grade ores and wastes in developing countries. The research and development programs in developing countries aim to design appropriate ...

In the design of batch and fed-batch fermentation plants, the problem of determining the adequate combination of number and size of the fermentors to be used, so to accomplish the desired production schedule must be faced. The problem has infinite solutions, as for any fermentor size, a number of units of that size will do the work, but not all