Biodegradation in upflow anoxic fixed film-fixed bed reactors of resorcinol, catechol and phenol in mono and binary substrates matrices

Substrate-substrate interaction of resorcinol and catechol in upflow anaerobic fixed film – fixed bed reactors in mono and multisubstrate matrices

“…The poor degradation of phenol observed in resorcinol reactor indicates that phenol pathway is poorly expressed by resorcinol acclimated culture when the feed contains phenol as mono substrate. Similar results were reported by Godbole and Chakrabarti [5] on the anoxic degradation of resorcinol and catechol. This indicates the possibility of another pathway for resorcinol degradation.…”

“…Godbole and Chakrabarti [5] have reported the degradation of resorcinol, catechol and phenol in mono and binary substrate matrices in up¯ow anoxic ®lm-®xed bed reactors acclimated to these compounds. They reported that phenol and catechol in binary mixture feed negatively interacted with one another in the resorcinol acclimated reactor, the interaction being more conspicuous at higher substrate loading rates.…”

Resorcinol degradation by a Penicillium chrysogenum strain under osmotic stress: mono and binary substrate matrices with phenol

“…Sonication for phenol degradation in the presence of salt has proved to be an attractive process in terms of costs and operating conditions, however several intermediates, including resorcinol are generated (Mahamuni and Pandit 2006). Literature surveys show that there are a limited number of microorganisms, especially bacteria, able to aerobically degrade resorcinol (Godbole and Chakrabarti 1991;Latkar and Chakrabarti 1994;Kurtz and Crow 1997;Ngugi et al 2005). The salinity in most industrial effluents is an inhibiting factor that can be even more toxic or stressful than the phenolic compounds (Kargi and Dinçer 1999).…”

“…Examples include activated carbon adsorption (Rodriguez et al 2008;Bayram et al 2009;Blanco-Martinez et al 2009), anoxic biodegradation (Godbole and Chakrabarti 1991), anaerobic biodegradation (Latkar and Chakrabarti 1994;Ngugi et al 2005), aerobic biodegradation (Gaal and Neujahr 1979;Ngugi et al 2005), and abiotic degradation catalyzed by birnessite (Chang Chien et al 2009). Recently, there has been an increasing interest in the application of new technologies, namely advanced oxidation processes (AOPs), as a possible alternative method for remediation of xenobiotics pollution.…”

Chemical and allied products

“…The influence of the primary substrate on the type of intermediate and final product obtained was determined. Upflow anoxic fixed-film bed reactors were used to demonstrate changes in substrate utilization rates of binary mixtures of resorcinol, catechol, and phenol, when compared to mono-substrate systems (Godbole and Chakrabarti, 1991). The hydraulic retention time required for the start-up of an anaerobic reactor with a polyurethane support media and treating volatile fatty acids was influenced by the quality of the immobilized bacteria (Rubindamayugi et al).…”