Substrate-substrate interaction of resorcinol and catechol in upflow anaerobic fixed film – fixed bed reactors in mono and multisubstrate matrices
| ISSN: |
0178-515X
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Process Engineering, Biotechnology, Nutrition Technology
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| Notes: |
Abstract Biodegradation of resorcinol and catechol was studied in upflow anaerobic fixed film-fixed bed (FFFB) reactors of uniform dimensions in mono and multisubstrate matrices. Cross feeding studies have revealed that phenol was poorly degraded in resorcinol acclimated reactor whereas it was readily degraded in catechol acclimated reactor. Addition of resorcinol along with phenol in a COD ratio 1:3 in resorcinol reactor increased phenol removal efficiency to 95% indicating that resorcinol induces phenol degradation. When both resorcinol and catechol were fed to the resorcinol acclimated reactor, it was observed that resorcinol degradation was inhibited by catechol. Catechol acclimated reactor could degrade phenol readily when added as mono substrate indicating that it may be an intermediate in catechol degradation. In binary mixture studies also catechol reactor could degrade phenol, resorcinol and hydroquinone to 90%. Catechol acclimated reactor exhibits relaxed substrate specificity whereas resorcinol acclimated reactor exhibits rigid substrate specificity for phenol as well as other isomers.
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| Type of Medium: |
Electronic Resource
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| URL: |