Transport and hydrolysis of urea in a reactor-separator combining an anion-exchange membrane and immobilized urease
A membrane reactor-separator, in which an anion-exchange membrane and a urease-immobilized poly(vinyl alcohol) (PVA) membrane were clamped together to separate the feed solution and the stripping solution of a dialysis cell, was constructed. The urea in the feed solution passed through the anion-exc...
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| Veröffentlicht in: | Journal of chemical technology and biotechnology (1986) 1994-12, Vol.61 (4), p.351-357 |
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| container_title | Journal of chemical technology and biotechnology (1986) |
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| creator | Chen, Dong-Hwang Leu, Jen-Chih Huang, Ting-Chia |
| description | A membrane reactor-separator, in which an anion-exchange membrane and a urease-immobilized poly(vinyl alcohol) (PVA) membrane were clamped together to separate the feed solution and the stripping solution of a dialysis cell, was constructed. The urea in the feed solution passed through the anion-exchange membrane, water film, and then was hydrolyzed to ammonium carbamate in the urease-immobilized PVA membrane. The experimental results showed that no ammonium ion was found in the feed solution under either phosphate or citrate buffer systems at 0.05-0.2 mol dm-3 and pH 6-9, and various initial concentrations of urea in the feed solution (20-200 mmol dm-3). This indicates that the water film between two membranes allows the carbamate ions to decompose into ammonium and carbonate ions completely before entering the anion-exchange membrane. The device therefore can be used for the removal of urea from feed solution, while preventing the backflow of ammonium ions from the stripping solution or water film into feed solution. It has significant potential in the development of a wearable or portable artificial kidney. The properties of the urease-immobilized PVA membrane were examined. A kinetic model describing the transport-reaction behavior of urea in the membrane reactor-separator was developed, and the optimum values of the reactor parameters were obtained. |
| doi_str_mv | 10.1002/jctb.280610411 |
| format | Article |
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The urea in the feed solution passed through the anion-exchange membrane, water film, and then was hydrolyzed to ammonium carbamate in the urease-immobilized PVA membrane. The experimental results showed that no ammonium ion was found in the feed solution under either phosphate or citrate buffer systems at 0.05-0.2 mol dm-3 and pH 6-9, and various initial concentrations of urea in the feed solution (20-200 mmol dm-3). This indicates that the water film between two membranes allows the carbamate ions to decompose into ammonium and carbonate ions completely before entering the anion-exchange membrane. The device therefore can be used for the removal of urea from feed solution, while preventing the backflow of ammonium ions from the stripping solution or water film into feed solution. It has significant potential in the development of a wearable or portable artificial kidney. The properties of the urease-immobilized PVA membrane were examined. A kinetic model describing the transport-reaction behavior of urea in the membrane reactor-separator was developed, and the optimum values of the reactor parameters were obtained.</description><identifier>ISSN: 0268-2575</identifier><identifier>EISSN: 1097-4660</identifier><identifier>DOI: 10.1002/jctb.280610411</identifier><identifier>PMID: 7765702</identifier><identifier>CODEN: JCTBDC</identifier><language>eng</language><publisher>Chichester, UK: John Wiley & Sons, Ltd</publisher><subject>anion-exchange membrane ; Applied sciences ; Biological Transport ; Biotechnology ; Chemical industry and chemicals ; Dialysis Solutions ; Enzymes, Immobilized - metabolism ; Exact sciences and technology ; Hydrolysis ; immobilized urease ; Industrial chemicals ; Kidneys, Artificial ; Kinetics ; Membranes, Artificial ; Organic industry ; Polyvinyl Alcohol ; reactor-separator ; transport ; urea ; Urea - metabolism ; Urease - metabolism</subject><ispartof>Journal of chemical technology and biotechnology (1986), 1994-12, Vol.61 (4), p.351-357</ispartof><rights>1995 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c419t-b30c49c63349b7243c6c7aef3f01bed5d5d3b10f70d91dc27d13f59a591390fa3</citedby><cites>FETCH-LOGICAL-c419t-b30c49c63349b7243c6c7aef3f01bed5d5d3b10f70d91dc27d13f59a591390fa3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3325558$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/7765702$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Chen, Dong-Hwang</creatorcontrib><creatorcontrib>Leu, Jen-Chih</creatorcontrib><creatorcontrib>Huang, Ting-Chia</creatorcontrib><title>Transport and hydrolysis of urea in a reactor-separator combining an anion-exchange membrane and immobilized urease</title><title>Journal of chemical technology and biotechnology (1986)</title><addtitle>J. Chem. Technol. Biotechnol</addtitle><description>A membrane reactor-separator, in which an anion-exchange membrane and a urease-immobilized poly(vinyl alcohol) (PVA) membrane were clamped together to separate the feed solution and the stripping solution of a dialysis cell, was constructed. The urea in the feed solution passed through the anion-exchange membrane, water film, and then was hydrolyzed to ammonium carbamate in the urease-immobilized PVA membrane. The experimental results showed that no ammonium ion was found in the feed solution under either phosphate or citrate buffer systems at 0.05-0.2 mol dm-3 and pH 6-9, and various initial concentrations of urea in the feed solution (20-200 mmol dm-3). This indicates that the water film between two membranes allows the carbamate ions to decompose into ammonium and carbonate ions completely before entering the anion-exchange membrane. The device therefore can be used for the removal of urea from feed solution, while preventing the backflow of ammonium ions from the stripping solution or water film into feed solution. It has significant potential in the development of a wearable or portable artificial kidney. The properties of the urease-immobilized PVA membrane were examined. A kinetic model describing the transport-reaction behavior of urea in the membrane reactor-separator was developed, and the optimum values of the reactor parameters were obtained.</description><subject>anion-exchange membrane</subject><subject>Applied sciences</subject><subject>Biological Transport</subject><subject>Biotechnology</subject><subject>Chemical industry and chemicals</subject><subject>Dialysis Solutions</subject><subject>Enzymes, Immobilized - metabolism</subject><subject>Exact sciences and technology</subject><subject>Hydrolysis</subject><subject>immobilized urease</subject><subject>Industrial chemicals</subject><subject>Kidneys, Artificial</subject><subject>Kinetics</subject><subject>Membranes, Artificial</subject><subject>Organic industry</subject><subject>Polyvinyl Alcohol</subject><subject>reactor-separator</subject><subject>transport</subject><subject>urea</subject><subject>Urea - metabolism</subject><subject>Urease - metabolism</subject><issn>0268-2575</issn><issn>1097-4660</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkcFrHCEUh6W0pJu0194KHkpvs33qqOOxTZO0EJJDUnoUdTQxnRm3OgvZ_PVxs8teg4IP3vc-5P0Q-kRgSQDotwc32yXtQBBoCXmDFgSUbFoh4C1aABVdQ7nk79FxKQ8AIDoqjtCRlIJLoAtUbrOZyirlGZupx_ebPqdhU2LBKeB19gbHCRtcCzen3BS_MtnUCrs02jjF6a7O1RvT1PhHd2-mO49HP9qq9S_KOI7JxiE--f5FWPwH9C6YofiP-_cE_Tk_uz391VxeX_w-_X7ZuJaoubEMXKucYKxVVtKWOeGk8YEFINb3vB5mCQQJvSK9o7InLHBluCJMQTDsBH3deVc5_V_7MusxFueHoX4trYuWQtG6M_IqSCWtZCtfBcnWKLq2gssd6HIqJfugVzmOJm80Ab3NTW9z04fc6sDnvXltR98f8H1Qtf9l3zfFmSHU9bpYDhhjlHPeVazZYbHM_vHQNvmfFpJJrv9eXeif8EPw86sbLdkzNNKwvA</recordid><startdate>19941201</startdate><enddate>19941201</enddate><creator>Chen, Dong-Hwang</creator><creator>Leu, Jen-Chih</creator><creator>Huang, Ting-Chia</creator><general>John Wiley & Sons, Ltd</general><general>Wiley</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>F28</scope><scope>7X8</scope></search><sort><creationdate>19941201</creationdate><title>Transport and hydrolysis of urea in a reactor-separator combining an anion-exchange membrane and immobilized urease</title><author>Chen, Dong-Hwang ; Leu, Jen-Chih ; Huang, Ting-Chia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c419t-b30c49c63349b7243c6c7aef3f01bed5d5d3b10f70d91dc27d13f59a591390fa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>anion-exchange membrane</topic><topic>Applied sciences</topic><topic>Biological Transport</topic><topic>Biotechnology</topic><topic>Chemical industry and chemicals</topic><topic>Dialysis Solutions</topic><topic>Enzymes, Immobilized - metabolism</topic><topic>Exact sciences and technology</topic><topic>Hydrolysis</topic><topic>immobilized urease</topic><topic>Industrial chemicals</topic><topic>Kidneys, Artificial</topic><topic>Kinetics</topic><topic>Membranes, Artificial</topic><topic>Organic industry</topic><topic>Polyvinyl Alcohol</topic><topic>reactor-separator</topic><topic>transport</topic><topic>urea</topic><topic>Urea - metabolism</topic><topic>Urease - metabolism</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Dong-Hwang</creatorcontrib><creatorcontrib>Leu, Jen-Chih</creatorcontrib><creatorcontrib>Huang, Ting-Chia</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of chemical technology and biotechnology (1986)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Dong-Hwang</au><au>Leu, Jen-Chih</au><au>Huang, Ting-Chia</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Transport and hydrolysis of urea in a reactor-separator combining an anion-exchange membrane and immobilized urease</atitle><jtitle>Journal of chemical technology and biotechnology (1986)</jtitle><addtitle>J. Chem. Technol. Biotechnol</addtitle><date>1994-12-01</date><risdate>1994</risdate><volume>61</volume><issue>4</issue><spage>351</spage><epage>357</epage><pages>351-357</pages><issn>0268-2575</issn><eissn>1097-4660</eissn><coden>JCTBDC</coden><abstract>A membrane reactor-separator, in which an anion-exchange membrane and a urease-immobilized poly(vinyl alcohol) (PVA) membrane were clamped together to separate the feed solution and the stripping solution of a dialysis cell, was constructed. The urea in the feed solution passed through the anion-exchange membrane, water film, and then was hydrolyzed to ammonium carbamate in the urease-immobilized PVA membrane. The experimental results showed that no ammonium ion was found in the feed solution under either phosphate or citrate buffer systems at 0.05-0.2 mol dm-3 and pH 6-9, and various initial concentrations of urea in the feed solution (20-200 mmol dm-3). This indicates that the water film between two membranes allows the carbamate ions to decompose into ammonium and carbonate ions completely before entering the anion-exchange membrane. The device therefore can be used for the removal of urea from feed solution, while preventing the backflow of ammonium ions from the stripping solution or water film into feed solution. It has significant potential in the development of a wearable or portable artificial kidney. The properties of the urease-immobilized PVA membrane were examined. A kinetic model describing the transport-reaction behavior of urea in the membrane reactor-separator was developed, and the optimum values of the reactor parameters were obtained.</abstract><cop>Chichester, UK</cop><pub>John Wiley & Sons, Ltd</pub><pmid>7765702</pmid><doi>10.1002/jctb.280610411</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of chemical technology and biotechnology (1986), 1994-12, Vol.61 (4), p.351-357 |
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| language | eng |
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| source | MEDLINE; Wiley Online Library All Journals |
| subjects | anion-exchange membrane Applied sciences Biological Transport Biotechnology Chemical industry and chemicals Dialysis Solutions Enzymes, Immobilized - metabolism Exact sciences and technology Hydrolysis immobilized urease Industrial chemicals Kidneys, Artificial Kinetics Membranes, Artificial Organic industry Polyvinyl Alcohol reactor-separator transport urea Urea - metabolism Urease - metabolism |
| title | Transport and hydrolysis of urea in a reactor-separator combining an anion-exchange membrane and immobilized urease |
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