Optimization of Fenton oxidation pre-treatment for B. thuringiensis – Based production of value added products from wastewater sludge
Fenton oxidation pretreatment was investigated for enhancement of biodegradability of wastewater sludge (WWS) which was subsequently used as substrate for the production of value- added products. The Response surface method with fractional factorial and central composite designs was applied to deter...
| Publicado en: | Journal of Environmental Management Vol. 91; no. 8; pp. 1657 - 1665 |
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| Autores principales: | , , , |
| Formato: | Artículo |
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Academic Press Inc.
Aug2010
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=51158385&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 51158385 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 03014797 EMJ jtl: Journal of Environmental Management issn: 03014797 maglogo: N pubinfo: dt: Aug2010 vid: 91 iid: 8 pid: 735 pub: Academic Press Inc. artinfo: ui: 51158385 10.1016/j.jenvman.2010.03.007 ppf: 1657 ppct: 8 formats: tig: atl: Optimization of Fenton oxidation pre-treatment for B. thuringiensis – Based production of value added products from wastewater sludge aug: au: Pham, T.T.H. Brar, S.K. Tyagi, R.D. Surampalli, R.Y. affil: INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada US EPA, P.O. Box-17-2141, Kansas City, Kansas, KS 66117, USA su: Oxidation -- Environmental aspects Bacillus thuringiensis Process optimization Fenton's reagent Value added (Marketing) Biodegradation sug: subj: Oxidation -- Environmental aspects Bacillus thuringiensis Process optimization Fenton's reagent Value added (Marketing) Biodegradation keyword: Biodegradability Fenton oxidation Response surface methodology Ultrasonication Wastewater sludge Biodegradability Fenton oxidation Response surface methodology Ultrasonication Wastewater sludge ab: Fenton oxidation pretreatment was investigated for enhancement of biodegradability of wastewater sludge (WWS) which was subsequently used as substrate for the production of value- added products. The Response surface method with fractional factorial and central composite designs was applied to determine the effects of Fenton parameters on solubilization and biodegradability of sludge and the optimization of the Fenton process. Maximum solubilization and biodegradability were obtained as 70% and 74%, respectively at the optimal conditions: 0.01ml HO/g SS, 150 [HO]/[Fe], 25g/L TS, at 25°C and 60min duration. Further, these optimal conditions were tested for the production of a value added product, Bacillus thuringiensis (Bt) which is being used as a biopesticide in the agriculture and forestry sector. It was observed that Bt growth using Fenton oxidized sludge as a substrate was improved with a maximum total cell count of 1.63×10 CFUml and 96% sporulation after 48h of fermentation. The results were also tested against ultrasonication treatment and the total cell count was found to be 4.08×10 CFUml with a sporulation of 90%. Hence, classic Fenton oxidation was demonstrated to be a rather more promising chemical pre-treatment for Bt - based biopesticide production using WWS when compared to ultrasonication as a physical pre-treatment. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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