Ferrous Sulphate Oxidation Using Acidithiobacillus Ferrooxidans Cells Immobilized in Ceramic Beads

Chemical and biochemical engineering quarterly

L. Guoliang¹  C. Wei¹  Y. Junfeng¹ 

关键词: Acidithiobacillus ferrooxidans;    biooxidation of ferrous ion;    ceramic beads;    immobilization;    packed-bed bioreactor;   

DOI  :  

来源: Croatian Society of Chemical Engineers

【 摘 要 】

Abstract The immobilization of Acidithiobacillus ferrooxidans cells on ceramic beads as carrier is described. The effects of ferrous ion concentration and dilution on the kinetics of ferrous ion oxidation in a packed-bed bioreactor were studied. In a medium containing 13.91 g of ferrous ion per litre, the fastest oxidation rate was 4.21 g L–1 at a dilution rate of 0.8 h–1. The corresponding conversion was X = 70 %. At ferrous ion mass concentrations greater than γ = 8.34 g L–1 and dilution rates greater than D = 0.8 h–1, the rate of ferrous-iron-oxidation reached a plateau or decreased, depending on how much the ferrous ion mass concentration or dilution rate was in excess.

【 授权许可】

Unknown