fulltext.study @t Gmail

As(III) biological oxidation by CAsO1 consortium in fixed-bed reactors

Paper ID Volume ID Publish Year Pages File Format Full-Text
35021 45069 2010 8 PDF Available
Title
As(III) biological oxidation by CAsO1 consortium in fixed-bed reactors
Abstract

In water treatment, removal of arsenite, the most toxic arsenic inorganic form, consists often in its oxidation, followed by precipitation or adsorption step. In this work, this oxidation step was done by a biological process, using an autotrophic bacterial consortium named CAsO1, isolated from a gold-mining site. A pilot plant was built, consisting of two biological fixed beds, inoculated with the CAsO1 consortium and fed with synthetic water spiked with As(III). Firstly, the hydrodynamic parameters were determined. The residence time distribution modelling showed a plug flow distribution with low diffusion phenomena. Secondly, the kinetic analysis, considering a first order reaction, made it possible to calculate the oxidation kinetic constant (0.04 min−1) and showed a heterogeneous distribution of the active biomass along the reactor. Batch experiments conducted with parts of the bed-support made it possible to characterize this kind of distribution. Finally, the hydrodynamic and kinetic studies enabled us to propose a design approach for such a biological treatment process.

Keywords
Arsenite; Arsenate; Biological oxidation; CAsO1 consortium; Fixed-bed reactor; Water treatment
First Page Preview
As(III) biological oxidation by CAsO1 consortium in fixed-bed reactors
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 45, Issue 2, February 2010, Pages 171–178
Authors
, , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us