Fast Kinetics of Fe2+ Oxidation in Packed-Bed Reactors
Reads0
Chats0
TLDR
In this paper, a fixed-film bioreactor was used to oxidize ferrous sulfate to ferric sulfate, and activated carbon particles were tested as support matrix materials.Abstract:
Thiobacillus ferrooxidans was used in fixed-film bioreactors to oxidize ferrous sulfate to ferric sulfate. Glass beads, ion-exchange resin, and activated-carbon particles were tested as support matrix materials. Activated carbon was tested in both a packed-bed bioreactor and a fluidized-bed bioreactor; the other matrix materials were used in packed-bed reactors. Activated carbon displayed the most suitable characteristics for use as a support matrix of T. ferrooxidans fixed-film formation. The reactors were operated within a pH range of 1.35 to 1.5, which effectively reduced the amount of ferric iron precipitation and eliminated diffusion control of mass transfer due to precipitation. The activated-carbon packed-bed reactor displayed the most favorable biomass holdup and kinetic performance related to ferrous sulfate oxidation. The fastest kinetic performance achieved with the activated-carbon packed-bed bioreactor was 78 g of Fe2+ oxidized per liter per h (1,400 mmol of Fe2+ oxidized per liter per h) at a true dilution rate of 40/h, which represents a hydraulic retention time of 1.5 min.read more
Citations
More filters
Journal ArticleDOI
Biological oxidation of ferrous sulphate by Thiobacillus ferrooxidans: a review on the kinetic aspects
TL;DR: Biological oxidation of ferrous sulphate by Thiobacillus ferrooxidans has proved to be a significant step in the bioleaching of sulphide minerals and treatment of acid mine drainage and has beneficial applications in the desulphurization of coal and removal of hydrogen sulphide from gaseous effluents.
Journal ArticleDOI
Ferrous sulphate oxidation using thiobacillus ferrooxidans: a review
Anders B. Jensen,Colin Webb +1 more
TL;DR: The ability of the chemolithotrophic bacterium Thiobacillus ferrooxidans to oxidise ferrous sulphate has been exploited in the process of bioleaching, treatment of acidic mine drainage and removal of H2S from sour gases as discussed by the authors.
BookDOI
Microbial Processing of Metal Sulfides
TL;DR: The present work focuses on the application of bioinformatics and genome biology to advance the understanding of bioleaching microorganisms, as well as other applications, including bioflotation and bioflocculation of relevance to minerals.
Journal ArticleDOI
Bio-dissolution of spent nickel-cadmium batteries using Thiobacillus ferrooxidans.
TL;DR: In this paper, the production of sulphuric acid in bioreactors with Thiobacillus ferrooxidans attached on elemental sulphur was investigated, and the results showed an economic and effective method which could be considered the first step to recycle spent and discarded batteries preventing one of the many problems of environmental pollution.
Journal ArticleDOI
Immobilisation of Thiobacillus ferrooxidans: importance of jarosite precipitation
C Pogliani,Edgardo Ruben Donati +1 more
TL;DR: The presence of glass beads only contributed to biofilm formation increasing jarosite precipitation especially at higher pH values, and at a pH value lower than 1.6, a biofilm was not produced due to negligible iron precipitation.
References
More filters
Journal ArticleDOI
Studies on the growth of Thiobacillus ferrooxidans. I. Use of membrane filters and ferrous iron agar to determine viable numbers, and comparison with 14 CO 2 -fixation and iron oxidation as measures of growth.
Journal ArticleDOI
Experimental study of the inverse fluidized bed biofilm reactor
L. Nikolov,D. Karamanev +1 more
TL;DR: In this article, the inverse fluidized bed biofilm reactor was introduced, in which low density particles covered by a biofilm are fluidized by downflow of the liquid, allowing control of the biofilm thickness and providing a high oxygen concentration in the reacting liquid.
Journal ArticleDOI
Characterization of Jarosite Formed upon Bacterial Oxidation of Ferrous Sulfate in a Packed-Bed Reactor.
TL;DR: A packed-bed bioreactor with activated-carbon particles as a carrier matrix material inoculated with Thiobacillus ferrooxidans was operated at a pH of 1.35 to 1.5 to convert ferrous sulfate to ferric sulfate, and trace amounts of precipitates produced in both the reactor and the oxidized effluent.
Journal ArticleDOI
Growth of Thiobacillus ferrooxidans on ferrous iron in chemostat culture: Influence of product and substrate inhibition
Carol A. Jones,D. P. Kelly +1 more
TL;DR: The results presented reveal unusual and novel properties of T. ferrooxidans relevant to describing its activities in natural environments or in mineral leaching systems.
Journal ArticleDOI
Influence of some physicochemical parameters on bacterial activity of biofilm: Ferrous iron oxidation by Thiobacillus ferrooxidans
Dimitre Karamanev,L. N. Nikolov +1 more
TL;DR: The oxidation rate of ferrous iron by biofilm of Thiobacillus ferrooxidans was determined and the kinetics of the process was described by the Monod equation with respect to the mass of the biofilm and with ferrous ions as the limiting substrate.
Related Papers (5)
Ferrous sulphate oxidation using Thiobacillus ferrooxidans cells immobilised in polyurethane foam support particles
H Armentia,Colin Webb +1 more