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Optimization and characterization of lignosulfonate biodegradation process by a bacterial strain, Sphingobacterium sp. HY-H.
- Source :
-
International Biodeterioration & Biodegradation . Nov2013, Vol. 85, p365-371. 7p. - Publication Year :
- 2013
-
Abstract
- Abstract: The objective of this study was to investigate the optimization and pathways of lignosulfonate biodegradation by a newly isolated lignin-degrading bacterial strain, Sphingobacterium sp. HY-H. The optimal conditions for lignosulfonate degradation capability were determined by Taguchi's orthogonal matrix method to be: initial pH, 7.0; temperature, 30 °C; and a lignosulfonate/nitrogen (as NH4Cl) mass ratio of 5. Under optimal conditions, the maximum lignosulfonate degradation capacity of strain HY-H was 31%. In order to characterize the changes in residual lignosulfonate and the metabolic products, FTIR spectra, functional groups, and elemental and GC–MS analysis were introduced. An examination of the data suggests a possible route of lignosulfonate degradation by strain HY-H was that lignosulfonate was first depolymerized to low-molecular-weight compounds; then the side chains of lignosulfonate were partially oxidized and further decarboxylated to produce carbon dioxide. If properly optimized and controlled, strain HY-H may play a role in the treatment of pulp and paper wastewater containing a high concentration of lignosulfonate, as well as in the lignocellulose breakdown for biofuel and chemicals production. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09648305
- Volume :
- 85
- Database :
- Academic Search Index
- Journal :
- International Biodeterioration & Biodegradation
- Publication Type :
- Academic Journal
- Accession number :
- 91626994
- Full Text :
- https://doi.org/10.1016/j.ibiod.2013.06.032