Performance of a fungal based SBR under pH extreme and shock phenolic exposure.
An investigation was performed to explore the capabilities of a filamentous fungal biomass to grow non-aseptically in a glucose-fed Sequencing Batch Reactor system in very extreme environment (pH 3.5) conditions. Trichoderma viride Pers: Fr. Isolate 8/90 was used as inoculum. Microscopic investigations were carried out to confirm fungal dominance in the open culture. In batch tests, the fungal biomass showed a significant ability to grow and remove the applied organic load (2000 mg(Glucose) L(-1) d(-1)), with high biomass yields. Furthermore, the biomass showed an ability to resist gallic acid toxicity at high concentraions (1 g L(-1)) without any pre- exposure acclimation of the biomass. The biomass (about 2.5 g(VSS) L(-1)) demonstrated significant aerobic removal of gallic acid in a timeframe of 20 h from initial exposure. The robust characteristics of this SBR system demonstrate potential for future development of fungal based treatment for recalcitrant feedstocks or operation under extreme environmental conditions.
D'Urso
A
A
Dipartimento Ingegneria Chimica Materiali e Ambiente, Sapienza - Università di Roma, Rome, Italy. alessio.durso@uniroma1.it
Gapes
D
D
Bravi
M
M
D001673:Biodegradation, Environmental; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D005707:Gallic Acid / Q000378:metabolism / Q000633:toxicity; D006863:Hydrogen-Ion Concentration; D010636:Phenols / Q000378:metabolism* / Q000633:toxicity; D015203:Reproducibility of Results; D014242:Trichoderma / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*
D010636:Phenols; D005707:Gallic Acid