Experimental Study of Flocculation of Bentonite and Alcaligenes Eutrophus in a Batch Oscillatory Baffled Flocculator
An experimental investigation is reported of the flocculation of bentonite and Alcaligenes eutrophus in a batch oscillatory baffled flocculator (OBF), where fluid mixing is achieved by eddies that are generated when fluid passes through a set of equally spaced stationary orifice baffles. Periodicall...
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| Veröffentlicht in: | Chemical engineering research & design 2001, Vol.79 (1), p.33-40 |
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| creator | Ni, X. Cosgrove, J.A. Cumming, R.H. Greated, C.A. Murray, K.R. Norman, P. |
| description | An experimental investigation is reported of the flocculation of bentonite and
Alcaligenes eutrophus in a batch oscillatory baffled flocculator (OBF), where fluid mixing is achieved by eddies that are generated when fluid passes through a set of equally spaced stationary orifice baffles. Periodically formed vortices can be controlled by a combination of operational and geometrical parameters, such as, oscillation frequency, oscillation amplitude, baffle diameter and baffle spacing. The effect of oscillation frequency and amplitude in the OBF on the percentage of flocculation of both bentonite and
Alcaligenes eutrophus was examined, the floc sizes at various operational conditions observed and the strain rates in the OBF measured using a digital particle image velocimetry (DPIV) technique. The results show that the oscillation amplitude is the dominant factor in influencing the percentage of flocculation. The measured strain rate was linked with the percentage of flocculation per ppm polymer dose and the results compared with those obtained in conventional stirred tank flocculators. |
| doi_str_mv | 10.1205/026387601528507 |
| format | Article |
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Alcaligenes eutrophus in a batch oscillatory baffled flocculator (OBF), where fluid mixing is achieved by eddies that are generated when fluid passes through a set of equally spaced stationary orifice baffles. Periodically formed vortices can be controlled by a combination of operational and geometrical parameters, such as, oscillation frequency, oscillation amplitude, baffle diameter and baffle spacing. The effect of oscillation frequency and amplitude in the OBF on the percentage of flocculation of both bentonite and
Alcaligenes eutrophus was examined, the floc sizes at various operational conditions observed and the strain rates in the OBF measured using a digital particle image velocimetry (DPIV) technique. The results show that the oscillation amplitude is the dominant factor in influencing the percentage of flocculation. The measured strain rate was linked with the percentage of flocculation per ppm polymer dose and the results compared with those obtained in conventional stirred tank flocculators.</description><identifier>ISSN: 0263-8762</identifier><identifier>DOI: 10.1205/026387601528507</identifier><identifier>CODEN: CERDEE</identifier><language>eng</language><publisher>Rugby: Elsevier B.V</publisher><subject>Alcaligenes eutrophus ; Applied sciences ; bentonite ; Chemical engineering ; Exact sciences and technology ; flocculation ; Liquid-liquid and fluid-solid mechanical separations ; mean strain rate ; Miscellaneous ; oscillation amplitude ; oscillation frequency ; oscillatory baffled flocculator</subject><ispartof>Chemical engineering research & design, 2001, Vol.79 (1), p.33-40</ispartof><rights>2001 The Institution of Chemical Engineers</rights><rights>2001 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c317t-736caf515c289eeeaf013a2235bd038f84447bb44ea62542ca9a16b52bf303c13</citedby><cites>FETCH-LOGICAL-c317t-736caf515c289eeeaf013a2235bd038f84447bb44ea62542ca9a16b52bf303c13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1205/026387601528507$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,4010,27904,27905,27906,45976</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=888280$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Ni, X.</creatorcontrib><creatorcontrib>Cosgrove, J.A.</creatorcontrib><creatorcontrib>Cumming, R.H.</creatorcontrib><creatorcontrib>Greated, C.A.</creatorcontrib><creatorcontrib>Murray, K.R.</creatorcontrib><creatorcontrib>Norman, P.</creatorcontrib><title>Experimental Study of Flocculation of Bentonite and Alcaligenes Eutrophus in a Batch Oscillatory Baffled Flocculator</title><title>Chemical engineering research & design</title><description>An experimental investigation is reported of the flocculation of bentonite and
Alcaligenes eutrophus in a batch oscillatory baffled flocculator (OBF), where fluid mixing is achieved by eddies that are generated when fluid passes through a set of equally spaced stationary orifice baffles. Periodically formed vortices can be controlled by a combination of operational and geometrical parameters, such as, oscillation frequency, oscillation amplitude, baffle diameter and baffle spacing. The effect of oscillation frequency and amplitude in the OBF on the percentage of flocculation of both bentonite and
Alcaligenes eutrophus was examined, the floc sizes at various operational conditions observed and the strain rates in the OBF measured using a digital particle image velocimetry (DPIV) technique. The results show that the oscillation amplitude is the dominant factor in influencing the percentage of flocculation. The measured strain rate was linked with the percentage of flocculation per ppm polymer dose and the results compared with those obtained in conventional stirred tank flocculators.</description><subject>Alcaligenes eutrophus</subject><subject>Applied sciences</subject><subject>bentonite</subject><subject>Chemical engineering</subject><subject>Exact sciences and technology</subject><subject>flocculation</subject><subject>Liquid-liquid and fluid-solid mechanical separations</subject><subject>mean strain rate</subject><subject>Miscellaneous</subject><subject>oscillation amplitude</subject><subject>oscillation frequency</subject><subject>oscillatory baffled flocculator</subject><issn>0263-8762</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNp1UE1LAzEQzUHBWj17DXhem4_NbnpsS6tCoQf1vGSzExtZkyXJiv33plQUBE_DvHlvZt5D6IaSO8qImBFWcVlXhAomBanP0OSIFBliF-gyxjdCCK1LOUFp_TlAsO_gkurxUxq7A_YGb3qv9dirZL079ss8984mwMp1eNFr1dtXcBDxekzBD_sxYuuwwkuV9B7vorZ9VvtwyIgxPXS_K324QudG9RGuv-sUvWzWz6uHYru7f1wttoXmtE5FzSutjKBCMzkHAGUI5YoxLtqOcGlkWZZ125YlqIqJkmk1V7RqBWsNJ1xTPkWz014dfIwBTDNkqyocGkqaY1DNn6Cy4vakGFTMHk1QTtv4I5NSMkkya35iQX7-w0Josl9wGjobQKem8_bfC1_2KX0H</recordid><startdate>2001</startdate><enddate>2001</enddate><creator>Ni, X.</creator><creator>Cosgrove, J.A.</creator><creator>Cumming, R.H.</creator><creator>Greated, C.A.</creator><creator>Murray, K.R.</creator><creator>Norman, P.</creator><general>Elsevier B.V</general><general>Institution of Chemical Engineers</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2001</creationdate><title>Experimental Study of Flocculation of Bentonite and Alcaligenes Eutrophus in a Batch Oscillatory Baffled Flocculator</title><author>Ni, X. ; Cosgrove, J.A. ; Cumming, R.H. ; Greated, C.A. ; Murray, K.R. ; Norman, P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c317t-736caf515c289eeeaf013a2235bd038f84447bb44ea62542ca9a16b52bf303c13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Alcaligenes eutrophus</topic><topic>Applied sciences</topic><topic>bentonite</topic><topic>Chemical engineering</topic><topic>Exact sciences and technology</topic><topic>flocculation</topic><topic>Liquid-liquid and fluid-solid mechanical separations</topic><topic>mean strain rate</topic><topic>Miscellaneous</topic><topic>oscillation amplitude</topic><topic>oscillation frequency</topic><topic>oscillatory baffled flocculator</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ni, X.</creatorcontrib><creatorcontrib>Cosgrove, J.A.</creatorcontrib><creatorcontrib>Cumming, R.H.</creatorcontrib><creatorcontrib>Greated, C.A.</creatorcontrib><creatorcontrib>Murray, K.R.</creatorcontrib><creatorcontrib>Norman, P.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Chemical engineering research & design</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ni, X.</au><au>Cosgrove, J.A.</au><au>Cumming, R.H.</au><au>Greated, C.A.</au><au>Murray, K.R.</au><au>Norman, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental Study of Flocculation of Bentonite and Alcaligenes Eutrophus in a Batch Oscillatory Baffled Flocculator</atitle><jtitle>Chemical engineering research & design</jtitle><date>2001</date><risdate>2001</risdate><volume>79</volume><issue>1</issue><spage>33</spage><epage>40</epage><pages>33-40</pages><issn>0263-8762</issn><coden>CERDEE</coden><abstract>An experimental investigation is reported of the flocculation of bentonite and
Alcaligenes eutrophus in a batch oscillatory baffled flocculator (OBF), where fluid mixing is achieved by eddies that are generated when fluid passes through a set of equally spaced stationary orifice baffles. Periodically formed vortices can be controlled by a combination of operational and geometrical parameters, such as, oscillation frequency, oscillation amplitude, baffle diameter and baffle spacing. The effect of oscillation frequency and amplitude in the OBF on the percentage of flocculation of both bentonite and
Alcaligenes eutrophus was examined, the floc sizes at various operational conditions observed and the strain rates in the OBF measured using a digital particle image velocimetry (DPIV) technique. The results show that the oscillation amplitude is the dominant factor in influencing the percentage of flocculation. The measured strain rate was linked with the percentage of flocculation per ppm polymer dose and the results compared with those obtained in conventional stirred tank flocculators.</abstract><cop>Rugby</cop><pub>Elsevier B.V</pub><doi>10.1205/026387601528507</doi><tpages>8</tpages></addata></record> |
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| identifier | ISSN: 0263-8762 |
| ispartof | Chemical engineering research & design, 2001, Vol.79 (1), p.33-40 |
| issn | 0263-8762 |
| language | eng |
| recordid | cdi_crossref_primary_10_1205_026387601528507 |
| source | Elsevier ScienceDirect Journals |
| subjects | Alcaligenes eutrophus Applied sciences bentonite Chemical engineering Exact sciences and technology flocculation Liquid-liquid and fluid-solid mechanical separations mean strain rate Miscellaneous oscillation amplitude oscillation frequency oscillatory baffled flocculator |
| title | Experimental Study of Flocculation of Bentonite and Alcaligenes Eutrophus in a Batch Oscillatory Baffled Flocculator |
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