Microbial kinetic for In-Storage-Psychrophilic Anaerobic Digestion (ISPAD).
In-Storage-Psychrophilic-Anaerobic-Digestion (ISPAD) is a wastewater storage tank converted into an anaerobic digestion (AD) system by means of an airtight floating geo-membrane. For process optimization, ISPAD requires modelling with well-established microbial kinetics coefficients. The present obj...
| Publicado en: | Journal of Environmental Management Vol. 146; pp. 59 - 69 |
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| Autores principales: | , , |
| Formato: | Artículo |
| Publicado: |
Academic Press Inc.
Dec2014
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| Materias: | |
| 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=98481391&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 98481391 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: Dec2014 vid: 146 pid: 735 pub: Academic Press Inc. artinfo: ui: 98481391 10.1016/j.jenvman.2014.07.028 ppf: 59 ppct: 10 formats: tig: atl: Microbial kinetic for In-Storage-Psychrophilic Anaerobic Digestion (ISPAD). aug: au: Madani-Hosseini, Mahsa Mulligan, Catherine N. Barrington, Suzelle affil: Department of Building, Civil and Environmental Engineering, Concordia University, 1455 de Maisonneuve, Montréal H3G 1M8, Canada su: Chemical kinetics Psychrophilic bacteria Anaerobic digestion Anaerobic sludge digesters Process optimization Chemical decomposition Mathematical models Biodegradation of sewage sludge sug: subj: Chemical kinetics Psychrophilic bacteria Anaerobic digestion Anaerobic sludge digesters Process optimization Chemical decomposition Mathematical models Biodegradation of sewage sludge keyword: Kinetic coefficients Psycrophilic anaerobic digestion Swine manure Kinetic coefficients Psycrophilic anaerobic digestion Swine manure ab: In-Storage-Psychrophilic-Anaerobic-Digestion (ISPAD) is a wastewater storage tank converted into an anaerobic digestion (AD) system by means of an airtight floating geo-membrane. For process optimization, ISPAD requires modelling with well-established microbial kinetics coefficients. The present objectives were to: obtain kinetics coefficients for the modelling of ISPAD; compare the prediction of the conventional and decomposition fitting approach, an innovative fitting technique used in other fields of science, and; obtain equations to predict the maximum growth rate ( μ max ) of microbial communities as a function of temperature. The method consisted in conducting specific Substrate Activity Tests (SAT) using ISPAD inoculum to monitor the rate of degradation of specific substrates at 8, 18 and 35 °C. Microbial kinetics coefficients were obtained by fitting the Monod equations to SAT. The statistical procedure of Least Square Error analysis was used to minimize the Sum of Squared Errors (SSE) between the measured ISPAD experimental data and the Monod equation values. Comparing both fitting methods, the decomposition approach gave higher correlation coefficient ( R ) for most kinetics values, as compared to the conventional approach. Tested to predict μ max with temperature, the Square Root equation better predicted temperature dependency of both acidogens and propionate degrading acetogens, while the Arrhenius equation better predicted that of methanogens and butyrate degrading acetogens. Increasing temperature from 18 to 35 °C did not affect butyrate degrading acetogens, likely because of their dominance, as demonstrated by microbial population estimation. The estimated ISPAD kinetics coefficients suggest a robust psychrophilic and mesophilic coexisting microbial community demonstrating acclimation to ambient temperature. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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