Scheda di dettaglio – i prodotti della ricerca

DatoValore
TitlePentachlorophenol biodegradation in a two-phase system operated with absorptive polymer: Box-Behnken experimental design and optimization by response surface methodology
AbstractThe biodegradation of pentachlorophenol (PCP), the most toxic among chlorophenols, was extensivelyinvestigated in solid-liquid two-phase bioreactors (according to Box-Behnken experimental design) todemonstrate the feasibility of this technological platform. Process performance optimization for the sub-sequent scale up was also performed. The process was catalysed by an acclimated microbial consortiumand the partitioning phase consisted of Hytrel 8206 polymer. The virtuous combination of polymeruptake/release and microbial biodegradation allowed achieving practically complete biodegradationefficiencies and rates in the range of 4.0-7.8 mg/(L h) for PCP concentrations up to 100 mg/L far abovethose previously tested. Detected biodegradation rates are one order of magnitude higher than the onesreported for suspended biomass reactors. A regression model based on 3 independent variables (initialPCP and biomass concentration and polymer-to-water ratio) was formulated to predict the volumetricbiodegradation rate. The significance of independent variables and their interactions was tested by theanalysis of variance (ANOVA) with 95% confidence limit. The model resulted adequate and the polymer-to-water ratio was identified as the most significant factor affecting the system response. Maximizationof the biodegradation rate has been achieved for PCP concentration of 100 mg/L, biomass concentrationof 1 gVSS/L and polymer-to-water ratio of 9%.
SourceProcess safety and environmental protection 131, pp. 105–115
KeywordsPentachlorophenolBiodegradationAbsorptive polymersResponse surface methodologyBox-Behnken experimental designKinetics
JournalProcess safety and environmental protection
EditorElsevier Science, Rugby, Regno Unito
Year2019
TypeArticolo in rivista
DOI10.1016/j.psep.2019.09.005
AuthorsMosca Angelucci D., Piscitelli D., Tomei M.C.
Text420422 2019 10.1016/j.psep.2019.09.005 Scopus 2 s2.0 85072189311 ISI Web of Science WOS WOS 000493948000011 Pentachlorophenol Biodegradation Absorptive polymers Response surface methodology Box Behnken experimental design Kinetics Pentachlorophenol biodegradation in a two phase system operated with absorptive polymer Box Behnken experimental design and optimization by response surface methodology Mosca Angelucci D., Piscitelli D., Tomei M.C. Water Research Institute, C.N.R., Via Salaria km 29.300, CP 10, 00015 Monterotondo Stazione Rome, Italy The biodegradation of pentachlorophenol PCP , the most toxic among chlorophenols, was extensivelyinvestigated in solid liquid two phase bioreactors according to Box Behnken experimental design todemonstrate the feasibility of this technological platform. Process performance optimization for the sub sequent scale up was also performed. The process was catalysed by an acclimated microbial consortiumand the partitioning phase consisted of Hytrel 8206 polymer. The virtuous combination of polymeruptake/release and microbial biodegradation allowed achieving practically complete biodegradationefficiencies and rates in the range of 4.0 7.8 mg/ L h for PCP concentrations up to 100 mg/L far abovethose previously tested. Detected biodegradation rates are one order of magnitude higher than the onesreported for suspended biomass reactors. A regression model based on 3 independent variables initialPCP and biomass concentration and polymer to water ratio was formulated to predict the volumetricbiodegradation rate. The significance of independent variables and their interactions was tested by theanalysis of variance ANOVA with 95% confidence limit. The model resulted adequate and the polymer to water ratio was identified as the most significant factor affecting the system response. Maximizationof the biodegradation rate has been achieved for PCP concentration of 100 mg/L, biomass concentrationof 1 gVSS/L and polymer to water ratio of 9%. 131 Published version https //biblioproxy.cnr.it 2114/science/article/pii/S095758201930610X via%3Dihub Pentachlorophenol biodegradation in a two phase system operated with absorptive polymer Box Behnken experimental design and optimization Pdf dell articolo Pentachlorophenol biodegradation in a two phase system operated with absorptive polymer Box Behnken experimental design and optimization by response surface methodology PSEP2019_PCP.pdf Articolo in rivista Elsevier Science 0957 5820 Process safety and environmental protection Process safety and environmental protection Process saf. environ. prot. Process safety and environmental protection. Transactions of the Institution of Chemical Engineers. Part B, Process safety and environmental protection danielapiscitelli PISCITELLI DANIELA domenica.moscaangelucci MOSCA ANGELUCCI DOMENICA mariaconcetta.tomei TOMEI MARIA CONCETTA