Dynamic Model for UASB Reactor Including Reactor Hydraulics, Reaction, and Diffusion
A dynamic model has been developed to describe upflow anaerobic sludge blanket (UASB) reactors from several aspects including reactor hydraulics, biological reaction kinetics, and mass transfer within anaerobic granules. A flow model of a nonideal continuously stirred tank reactor (CSTR) followed by...
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| Veröffentlicht in: | Journal of environmental engineering (New York, N.Y.) N.Y.), 1997-03, Vol.123 (3), p.244-252 |
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| container_title | Journal of environmental engineering (New York, N.Y.) |
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| creator | Wu, May M Hickey, Robert F |
| description | A dynamic model has been developed to describe upflow anaerobic sludge blanket (UASB) reactors from several aspects including reactor hydraulics, biological reaction kinetics, and mass transfer within anaerobic granules. A flow model of a nonideal continuously stirred tank reactor (CSTR) followed by a dispersion plug flow reactor (PFR) was used to simulate the reactor hydraulics as observed from a LiCl tracer study. The dynamic model based on this flow model was then evaluated by a set of acetate impulse data and verified with a data set from a two-step acetate feed increase experiment from a bench-scale UASB reactor. The model describes UASB reactor performance well. Simulation results indicate significant effects of reactor nonideal flow, diffusional resistance, as well as degradation kinetics on overall substrate utilization rate. Sensitivity analyses on model parameters Ks, km, KL, D, R, and nonideal flow factors revealed granule size has a strong impact on the reactor performance. The effect of KL is not significant. Reactor mixing was improved by an increase in biogas production. |
| doi_str_mv | 10.1061/(ASCE)0733-9372(1997)123:3(244) |
| format | Article |
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A flow model of a nonideal continuously stirred tank reactor (CSTR) followed by a dispersion plug flow reactor (PFR) was used to simulate the reactor hydraulics as observed from a LiCl tracer study. The dynamic model based on this flow model was then evaluated by a set of acetate impulse data and verified with a data set from a two-step acetate feed increase experiment from a bench-scale UASB reactor. The model describes UASB reactor performance well. Simulation results indicate significant effects of reactor nonideal flow, diffusional resistance, as well as degradation kinetics on overall substrate utilization rate. Sensitivity analyses on model parameters Ks, km, KL, D, R, and nonideal flow factors revealed granule size has a strong impact on the reactor performance. The effect of KL is not significant. Reactor mixing was improved by an increase in biogas production.</description><identifier>ISSN: 0733-9372</identifier><identifier>EISSN: 1943-7870</identifier><identifier>DOI: 10.1061/(ASCE)0733-9372(1997)123:3(244)</identifier><identifier>CODEN: JOEEDU</identifier><language>eng</language><publisher>Reston, VA: American Society of Civil Engineers</publisher><subject>Biological and medical sciences ; Biological treatment of sewage sludges and wastes ; Bioreactors ; Biotechnology ; Environment and pollution ; Fundamental and applied biological sciences. Psychology ; Industrial applications and implications. Economical aspects ; Methods. Procedures. 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A flow model of a nonideal continuously stirred tank reactor (CSTR) followed by a dispersion plug flow reactor (PFR) was used to simulate the reactor hydraulics as observed from a LiCl tracer study. The dynamic model based on this flow model was then evaluated by a set of acetate impulse data and verified with a data set from a two-step acetate feed increase experiment from a bench-scale UASB reactor. The model describes UASB reactor performance well. Simulation results indicate significant effects of reactor nonideal flow, diffusional resistance, as well as degradation kinetics on overall substrate utilization rate. Sensitivity analyses on model parameters Ks, km, KL, D, R, and nonideal flow factors revealed granule size has a strong impact on the reactor performance. The effect of KL is not significant. Reactor mixing was improved by an increase in biogas production.</description><subject>Biological and medical sciences</subject><subject>Biological treatment of sewage sludges and wastes</subject><subject>Bioreactors</subject><subject>Biotechnology</subject><subject>Environment and pollution</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Industrial applications and implications. Economical aspects</subject><subject>Methods. Procedures. 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Psychology</topic><topic>Industrial applications and implications. Economical aspects</topic><topic>Methods. Procedures. Technologies</topic><topic>TECHNICAL PAPERS</topic><topic>Various methods and equipments</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, May M</creatorcontrib><creatorcontrib>Hickey, Robert F</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Journal of environmental engineering (New York, N.Y.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, May M</au><au>Hickey, Robert F</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dynamic Model for UASB Reactor Including Reactor Hydraulics, Reaction, and Diffusion</atitle><jtitle>Journal of environmental engineering (New York, N.Y.)</jtitle><date>1997-03-01</date><risdate>1997</risdate><volume>123</volume><issue>3</issue><spage>244</spage><epage>252</epage><pages>244-252</pages><issn>0733-9372</issn><eissn>1943-7870</eissn><coden>JOEEDU</coden><abstract>A dynamic model has been developed to describe upflow anaerobic sludge blanket (UASB) reactors from several aspects including reactor hydraulics, biological reaction kinetics, and mass transfer within anaerobic granules. A flow model of a nonideal continuously stirred tank reactor (CSTR) followed by a dispersion plug flow reactor (PFR) was used to simulate the reactor hydraulics as observed from a LiCl tracer study. The dynamic model based on this flow model was then evaluated by a set of acetate impulse data and verified with a data set from a two-step acetate feed increase experiment from a bench-scale UASB reactor. The model describes UASB reactor performance well. Simulation results indicate significant effects of reactor nonideal flow, diffusional resistance, as well as degradation kinetics on overall substrate utilization rate. Sensitivity analyses on model parameters Ks, km, KL, D, R, and nonideal flow factors revealed granule size has a strong impact on the reactor performance. The effect of KL is not significant. Reactor mixing was improved by an increase in biogas production.</abstract><cop>Reston, VA</cop><pub>American Society of Civil Engineers</pub><doi>10.1061/(ASCE)0733-9372(1997)123:3(244)</doi><tpages>9</tpages></addata></record> |
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| identifier | ISSN: 0733-9372 |
| ispartof | Journal of environmental engineering (New York, N.Y.), 1997-03, Vol.123 (3), p.244-252 |
| issn | 0733-9372 1943-7870 |
| language | eng |
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| source | American Society of Civil Engineers:NESLI2:Journals:2014; Business Source Complete |
| subjects | Biological and medical sciences Biological treatment of sewage sludges and wastes Bioreactors Biotechnology Environment and pollution Fundamental and applied biological sciences. Psychology Industrial applications and implications. Economical aspects Methods. Procedures. Technologies TECHNICAL PAPERS Various methods and equipments |
| title | Dynamic Model for UASB Reactor Including Reactor Hydraulics, Reaction, and Diffusion |
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