fulltext.study @t Gmail

Kinetic study on biological reduction of selenium compounds

Paper ID Volume ID Publish Year Pages File Format Full-Text
35324 45086 2008 4 PDF Available
Title
Kinetic study on biological reduction of selenium compounds
Abstract

Biological treatment of selenium-containing wastewater was investigated using the selenium-reducing sludge acclimatized from denitrifying sludge. The kinetic behavior of selenium reduction was evaluated for both selenate- and selenite-acclimatized sludge using methanol as an electron donor in batch and continuous runs. Selenate and selenite concentrations decreased linearly till the end of reaction, indicating the zero-order kinetics of the consecutive reduction paths. The temperature dependency was satisfactorily expressed by the Arrhenius type equation with different activation energy in selenate and selenite reduction. The pH dependency was quite different, too. The inhibitory effects of nitrate coexistence in reacting fluid were different depending on the type of selenium and sludge employed. The continuous runs with actual industrial wastewater could be performed satisfactorily resulting in full reduction of the aqueous selenium species to native Se, which was reflected in quite low selenium concentration of the effluent.

Keywords
Biological treatment; Selenium reduction; Kinetics; Selenate; Selenite; Nitrate
First Page Preview
Kinetic study on biological reduction of selenium compounds
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 43, Issue 11, November 2008, Pages 1304–1307
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