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Biodegradation of thiocyanate in biofilm reactor using fluidized-carriers

Paper ID Volume ID Publish Year Pages File Format Full-Text
36395 45131 2006 7 PDF Available
Title
Biodegradation of thiocyanate in biofilm reactor using fluidized-carriers
Abstract

For the biological treatment of the wastewater containing highly concentrated thiocyanate, microorganisms for thiocyanate biodegradation were isolated and the biofilm reactor charged with fluidized-carriers of tube chip type was employed. The isolated microorganisms were presumed autotrophs. In a small-scale biofilm reactor for the performance test, the observed maximum degradation rate with 80 vol% of fluidized-carriers was 8.1 kg m−3 day−1, which was much higher than those observed in any other reactor systems. The high performance of biofilm reactor was presumed to result from the high concentration of microorganisms attached on fluidized-carriers with high surface area. In a bench scale biofilm reactor for the commercial plant design, the biofilm reactor system showed that thiocyanate of 7000 mg l−1 was successfully degraded to more than 99.9% of removal efficiency within 36 h of total hydraulic retention time.

Keywords
Autotrophs; Biodegradation; Biofilm; Coke wastewater; Fluidized-carrier; Thiocyanate
First Page Preview
Biodegradation of thiocyanate in biofilm reactor using fluidized-carriers
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 3, March 2006, Pages 701–707
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering