Rheology, Sedimentation, and Filtration of TiO2 Suspensions
It is shown that with aqueous suspensions of colloidal oxide and hydroxide particles simple rheometric and sedimentation experiments allow the determination of the optimum pH for filtration and washing. This approach is more practical than zeta potential measurements, as explained by a theoretical r...
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| Veröffentlicht in: | Chemical engineering & technology 2003-01, Vol.26 (1), p.25-33 |
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| creator | Gesenhues, U. |
| description | It is shown that with aqueous suspensions of colloidal oxide and hydroxide particles simple rheometric and sedimentation experiments allow the determination of the optimum pH for filtration and washing. This approach is more practical than zeta potential measurements, as explained by a theoretical review and illustrated by experiments with industrial TiO2 white pigments of varying surface chemistry. Besides, the solids content of the filter cake and its dependence on pH is correctly predicted from the rheology of the suspension, thus giving an idea of the mechanism of filter cake formation. This follows from a comparison to the results of filtration experiments. There, the influences of filter vacuum as well as of pH and solids content of the pigment feed suspension on filtration capacity and washing efficiency have been studied. The experiments also illustrate an inexpensive method of how to find the optimum set of parameters for an economical drum filter operation in the plant.
With aqueous suspensions of colloidal oxide and hydroxide particles simple rheometric and sedimentation experiments allow the determination of the optimum pH for filtration and washing. This approach is more practical than zeta potential measurements, as explained by a theoretical review and illustrated by experiments with industrial TiO2 white pigments of varying surface chemistry. |
| doi_str_mv | 10.1002/ceat.200390001 |
| format | Article |
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With aqueous suspensions of colloidal oxide and hydroxide particles simple rheometric and sedimentation experiments allow the determination of the optimum pH for filtration and washing. This approach is more practical than zeta potential measurements, as explained by a theoretical review and illustrated by experiments with industrial TiO2 white pigments of varying surface chemistry.</description><identifier>ISSN: 0930-7516</identifier><identifier>EISSN: 1521-4125</identifier><identifier>DOI: 10.1002/ceat.200390001</identifier><identifier>CODEN: CETEER</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>Applied sciences ; Chemical engineering ; Chemical industry and chemicals ; Chemistry ; Colloidal state and disperse state ; Cross-disciplinary physics: materials science; rheology ; Dyes, pigments ; Emulsions and suspensions ; Exact sciences and technology ; Filtration ; General and physical chemistry ; Heterogeneous liquids: suspensions, dispersions, emulsions, pastes, slurries, foams, block copolymers, etc ; Industrial chemicals ; Liquid-liquid and fluid-solid mechanical separations ; Material form ; Physical and chemical studies. Granulometry. Electrokinetic phenomena ; Physics ; Rheology ; Sedimentation ; Suspensions</subject><ispartof>Chemical engineering & technology, 2003-01, Vol.26 (1), p.25-33</ispartof><rights>Copyright © 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><rights>2003 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fceat.200390001$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45551</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14520952$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Gesenhues, U.</creatorcontrib><title>Rheology, Sedimentation, and Filtration of TiO2 Suspensions</title><title>Chemical engineering & technology</title><addtitle>Chem. Eng. Technol</addtitle><description>It is shown that with aqueous suspensions of colloidal oxide and hydroxide particles simple rheometric and sedimentation experiments allow the determination of the optimum pH for filtration and washing. This approach is more practical than zeta potential measurements, as explained by a theoretical review and illustrated by experiments with industrial TiO2 white pigments of varying surface chemistry. Besides, the solids content of the filter cake and its dependence on pH is correctly predicted from the rheology of the suspension, thus giving an idea of the mechanism of filter cake formation. This follows from a comparison to the results of filtration experiments. There, the influences of filter vacuum as well as of pH and solids content of the pigment feed suspension on filtration capacity and washing efficiency have been studied. The experiments also illustrate an inexpensive method of how to find the optimum set of parameters for an economical drum filter operation in the plant.
With aqueous suspensions of colloidal oxide and hydroxide particles simple rheometric and sedimentation experiments allow the determination of the optimum pH for filtration and washing. This approach is more practical than zeta potential measurements, as explained by a theoretical review and illustrated by experiments with industrial TiO2 white pigments of varying surface chemistry.</description><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>Chemical industry and chemicals</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Dyes, pigments</subject><subject>Emulsions and suspensions</subject><subject>Exact sciences and technology</subject><subject>Filtration</subject><subject>General and physical chemistry</subject><subject>Heterogeneous liquids: suspensions, dispersions, emulsions, pastes, slurries, foams, block copolymers, etc</subject><subject>Industrial chemicals</subject><subject>Liquid-liquid and fluid-solid mechanical separations</subject><subject>Material form</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>Physics</subject><subject>Rheology</subject><subject>Sedimentation</subject><subject>Suspensions</subject><issn>0930-7516</issn><issn>1521-4125</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNpFkElPwzAQhS0EEqVw5ZwLt6bMeMkiTlXpglS1ggZxtGzHAUOaVHEQ9N-TUlROo2_mvdHMI-QaYYgA9NZY1Q4pAEsBAE9IDwXFkCMVp6QHKYMwFhidkwvv3_eKDnrk7unN1mX9uhsEa5u7ja1a1bq6GgSqyoOpK9vml4O6CDK3osH6029t5buWvyRnhSq9vfqrffI8nWTjebhYzR7Go0XoaIwYphpjHVkLkTXIiwQSrUVkODdG8QghB2YTnSuaMs0VslgUhVExJrr7JbeM9cnNYe9WeaPKolGVcV5uG7dRzU4iFxRSQTtdetB9udLu_ucg9_nIfT7ymI8cT0bZkTpvePA639rvo1c1HzKKu5Pky3Im53R9v6Qik4_sB6LwagU</recordid><startdate>200301</startdate><enddate>200301</enddate><creator>Gesenhues, U.</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><general>Wiley-VCH</general><scope>BSCLL</scope><scope>IQODW</scope></search><sort><creationdate>200301</creationdate><title>Rheology, Sedimentation, and Filtration of TiO2 Suspensions</title><author>Gesenhues, U.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i2711-9b17b6ee06ec14f808bb56c44cca4610d03e8bda293b4a1375ffca718b003de33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>Chemical industry and chemicals</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Dyes, pigments</topic><topic>Emulsions and suspensions</topic><topic>Exact sciences and technology</topic><topic>Filtration</topic><topic>General and physical chemistry</topic><topic>Heterogeneous liquids: suspensions, dispersions, emulsions, pastes, slurries, foams, block copolymers, etc</topic><topic>Industrial chemicals</topic><topic>Liquid-liquid and fluid-solid mechanical separations</topic><topic>Material form</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>Physics</topic><topic>Rheology</topic><topic>Sedimentation</topic><topic>Suspensions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gesenhues, U.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><jtitle>Chemical engineering & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gesenhues, U.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rheology, Sedimentation, and Filtration of TiO2 Suspensions</atitle><jtitle>Chemical engineering & technology</jtitle><addtitle>Chem. Eng. Technol</addtitle><date>2003-01</date><risdate>2003</risdate><volume>26</volume><issue>1</issue><spage>25</spage><epage>33</epage><pages>25-33</pages><issn>0930-7516</issn><eissn>1521-4125</eissn><coden>CETEER</coden><abstract>It is shown that with aqueous suspensions of colloidal oxide and hydroxide particles simple rheometric and sedimentation experiments allow the determination of the optimum pH for filtration and washing. This approach is more practical than zeta potential measurements, as explained by a theoretical review and illustrated by experiments with industrial TiO2 white pigments of varying surface chemistry. Besides, the solids content of the filter cake and its dependence on pH is correctly predicted from the rheology of the suspension, thus giving an idea of the mechanism of filter cake formation. This follows from a comparison to the results of filtration experiments. There, the influences of filter vacuum as well as of pH and solids content of the pigment feed suspension on filtration capacity and washing efficiency have been studied. The experiments also illustrate an inexpensive method of how to find the optimum set of parameters for an economical drum filter operation in the plant.
With aqueous suspensions of colloidal oxide and hydroxide particles simple rheometric and sedimentation experiments allow the determination of the optimum pH for filtration and washing. This approach is more practical than zeta potential measurements, as explained by a theoretical review and illustrated by experiments with industrial TiO2 white pigments of varying surface chemistry.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/ceat.200390001</doi><tpages>9</tpages></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Applied sciences Chemical engineering Chemical industry and chemicals Chemistry Colloidal state and disperse state Cross-disciplinary physics: materials science rheology Dyes, pigments Emulsions and suspensions Exact sciences and technology Filtration General and physical chemistry Heterogeneous liquids: suspensions, dispersions, emulsions, pastes, slurries, foams, block copolymers, etc Industrial chemicals Liquid-liquid and fluid-solid mechanical separations Material form Physical and chemical studies. Granulometry. Electrokinetic phenomena Physics Rheology Sedimentation Suspensions |
| title | Rheology, Sedimentation, and Filtration of TiO2 Suspensions |
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