INVESTIGATION OF REGIMES OF IRON (II) OXIDATION BY IMMOBILIZED BIOMASS IN SULFURIC ACID MEDIUM

作者：Heng Zhihong, Л. Н. Крылова, Zhanxue Sun · 发表于：Biotekhnologiya · 年份：2015 · DOI：10.21519/0234-2758-2015-1-61-69 · 被引用次数：2 · 研究领域：Metal Extraction and Bioleaching、Mining and Gasification Technologies、Minerals Flotation and Separation Techniques

In order to develop technologies for the regenerati of an oxidant, ions of iron (III), for the leaching of metals from sulfide and uranium ores in sulfuric acid, the oxidation regimens for iron (II) oxidation by biomass of aerobic hemolitoautotrophic acidophilic microorganisms, predominanly the Acidithiobacillus ferro- oxidans bacteria concentrated by adsorption immobilization on fixed solid carriers in column type bioreactors has been selected. The effect on the oxidation rate of way of aeration (to a solution supplied to the biooxidation, or directly to the bioreactor); aeration air flow rate, depending on the rate of the solution supply to the bioreactor; method for feeding with the solution to oxidize, in the top or bottom part of the bioreactor; feeding rate and carrier material used for the microorganism immobilization (zeolite and wood shavings) was examined