Selective removal of nitrate ions from water or aq. solns. - by ion exchange using succession of columns with weakly acidic cation exchanger then weakly basic anion exchanger before entering column filled with buffer
The removal of nitrate ions from water or aq. solns. is achieved by passing the liq. through a succession of exchange columns, whereby column (I) is filled with a weakly acidic cation exchanger, column (II) is filled with a nitrate-selective, weakly basic anion exchanger and column (III) is filled w...
Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Patent |
| Sprache: | eng ; ger |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | HAUPTMANN, RUEDIGER., O-4090 HALLE, DE FROEHLICH, PETER, DR., O-4090 HALLE, DE SCHOLZE, CHRISTIAN, O-8027 DRESDEN, DE SCHWACHULA, GERHARD, DR., O-4500 DESSAU, DE |
| description | The removal of nitrate ions from water or aq. solns. is achieved by passing the liq. through a succession of exchange columns, whereby column (I) is filled with a weakly acidic cation exchanger, column (II) is filled with a nitrate-selective, weakly basic anion exchanger and column (III) is filled with a buffer. (I) contains an H(+)-type cation exchanger and (III) contains either a Na(+)- and/or Ca(2+)-type weakly acidic cation exchanger or a weakly basic OH(-) or CaCO3-type anion exchanger, whereby if (III) contains a weakly acid cation exchanger, the positions of (I) and (III) are interchangeable, depending on the nature of the packing of the respective columns. A sprinkler is pref. placed between (I) and (II). ADVANTAGE - The process allows for a selective removal of nitrate ions from both neutral and acidic media with enhanced efficiency. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_DE4123651A1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>DE4123651A1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_DE4123651A13</originalsourceid><addsrcrecordid>eNqNjkFOwzAQRbNhgYA7_Au0UiiwR1DEHvbVxP1uLBxP8TgNvSnHwVFBgh2r0WjevP_Pm88XRroSDkTmoAeJUI8USpZCBE0Gn3XAVNcMzZD3JUxjsiUW6I4zAn64XtKOGC2kHWx0jmbzpbqcxnGomimUHhPlLR4hLmyDg5Py-z2j9Ew_TCdWEUl_iY5eM8FU68xZJzt8iJHbU0Y3es982Zx5icar73nR4Gn9-vC84F43tL04JpbN4_qmvV7d3bb37eofyBerL2k_</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Selective removal of nitrate ions from water or aq. solns. - by ion exchange using succession of columns with weakly acidic cation exchanger then weakly basic anion exchanger before entering column filled with buffer</title><source>esp@cenet</source><creator>HAUPTMANN, RUEDIGER., O-4090 HALLE, DE ; FROEHLICH, PETER, DR., O-4090 HALLE, DE ; SCHOLZE, CHRISTIAN, O-8027 DRESDEN, DE ; SCHWACHULA, GERHARD, DR., O-4500 DESSAU, DE</creator><creatorcontrib>HAUPTMANN, RUEDIGER., O-4090 HALLE, DE ; FROEHLICH, PETER, DR., O-4090 HALLE, DE ; SCHOLZE, CHRISTIAN, O-8027 DRESDEN, DE ; SCHWACHULA, GERHARD, DR., O-4500 DESSAU, DE</creatorcontrib><description>The removal of nitrate ions from water or aq. solns. is achieved by passing the liq. through a succession of exchange columns, whereby column (I) is filled with a weakly acidic cation exchanger, column (II) is filled with a nitrate-selective, weakly basic anion exchanger and column (III) is filled with a buffer. (I) contains an H(+)-type cation exchanger and (III) contains either a Na(+)- and/or Ca(2+)-type weakly acidic cation exchanger or a weakly basic OH(-) or CaCO3-type anion exchanger, whereby if (III) contains a weakly acid cation exchanger, the positions of (I) and (III) are interchangeable, depending on the nature of the packing of the respective columns. A sprinkler is pref. placed between (I) and (II). ADVANTAGE - The process allows for a selective removal of nitrate ions from both neutral and acidic media with enhanced efficiency.</description><language>eng ; ger</language><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; METALLURGY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; THEIR RELEVANT APPARATUS ; TRANSPORTING ; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><creationdate>1993</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19930121&DB=EPODOC&CC=DE&NR=4123651A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19930121&DB=EPODOC&CC=DE&NR=4123651A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HAUPTMANN, RUEDIGER., O-4090 HALLE, DE</creatorcontrib><creatorcontrib>FROEHLICH, PETER, DR., O-4090 HALLE, DE</creatorcontrib><creatorcontrib>SCHOLZE, CHRISTIAN, O-8027 DRESDEN, DE</creatorcontrib><creatorcontrib>SCHWACHULA, GERHARD, DR., O-4500 DESSAU, DE</creatorcontrib><title>Selective removal of nitrate ions from water or aq. solns. - by ion exchange using succession of columns with weakly acidic cation exchanger then weakly basic anion exchanger before entering column filled with buffer</title><description>The removal of nitrate ions from water or aq. solns. is achieved by passing the liq. through a succession of exchange columns, whereby column (I) is filled with a weakly acidic cation exchanger, column (II) is filled with a nitrate-selective, weakly basic anion exchanger and column (III) is filled with a buffer. (I) contains an H(+)-type cation exchanger and (III) contains either a Na(+)- and/or Ca(2+)-type weakly acidic cation exchanger or a weakly basic OH(-) or CaCO3-type anion exchanger, whereby if (III) contains a weakly acid cation exchanger, the positions of (I) and (III) are interchangeable, depending on the nature of the packing of the respective columns. A sprinkler is pref. placed between (I) and (II). ADVANTAGE - The process allows for a selective removal of nitrate ions from both neutral and acidic media with enhanced efficiency.</description><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</subject><subject>CHEMISTRY</subject><subject>METALLURGY</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><subject>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1993</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjkFOwzAQRbNhgYA7_Au0UiiwR1DEHvbVxP1uLBxP8TgNvSnHwVFBgh2r0WjevP_Pm88XRroSDkTmoAeJUI8USpZCBE0Gn3XAVNcMzZD3JUxjsiUW6I4zAn64XtKOGC2kHWx0jmbzpbqcxnGomimUHhPlLR4hLmyDg5Py-z2j9Ew_TCdWEUl_iY5eM8FU68xZJzt8iJHbU0Y3es982Zx5icar73nR4Gn9-vC84F43tL04JpbN4_qmvV7d3bb37eofyBerL2k_</recordid><startdate>19930121</startdate><enddate>19930121</enddate><creator>HAUPTMANN, RUEDIGER., O-4090 HALLE, DE</creator><creator>FROEHLICH, PETER, DR., O-4090 HALLE, DE</creator><creator>SCHOLZE, CHRISTIAN, O-8027 DRESDEN, DE</creator><creator>SCHWACHULA, GERHARD, DR., O-4500 DESSAU, DE</creator><scope>EVB</scope></search><sort><creationdate>19930121</creationdate><title>Selective removal of nitrate ions from water or aq. solns. - by ion exchange using succession of columns with weakly acidic cation exchanger then weakly basic anion exchanger before entering column filled with buffer</title><author>HAUPTMANN, RUEDIGER., O-4090 HALLE, DE ; FROEHLICH, PETER, DR., O-4090 HALLE, DE ; SCHOLZE, CHRISTIAN, O-8027 DRESDEN, DE ; SCHWACHULA, GERHARD, DR., O-4500 DESSAU, DE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_DE4123651A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; ger</language><creationdate>1993</creationdate><topic>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</topic><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><topic>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</topic><toplevel>online_resources</toplevel><creatorcontrib>HAUPTMANN, RUEDIGER., O-4090 HALLE, DE</creatorcontrib><creatorcontrib>FROEHLICH, PETER, DR., O-4090 HALLE, DE</creatorcontrib><creatorcontrib>SCHOLZE, CHRISTIAN, O-8027 DRESDEN, DE</creatorcontrib><creatorcontrib>SCHWACHULA, GERHARD, DR., O-4500 DESSAU, DE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HAUPTMANN, RUEDIGER., O-4090 HALLE, DE</au><au>FROEHLICH, PETER, DR., O-4090 HALLE, DE</au><au>SCHOLZE, CHRISTIAN, O-8027 DRESDEN, DE</au><au>SCHWACHULA, GERHARD, DR., O-4500 DESSAU, DE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Selective removal of nitrate ions from water or aq. solns. - by ion exchange using succession of columns with weakly acidic cation exchanger then weakly basic anion exchanger before entering column filled with buffer</title><date>1993-01-21</date><risdate>1993</risdate><abstract>The removal of nitrate ions from water or aq. solns. is achieved by passing the liq. through a succession of exchange columns, whereby column (I) is filled with a weakly acidic cation exchanger, column (II) is filled with a nitrate-selective, weakly basic anion exchanger and column (III) is filled with a buffer. (I) contains an H(+)-type cation exchanger and (III) contains either a Na(+)- and/or Ca(2+)-type weakly acidic cation exchanger or a weakly basic OH(-) or CaCO3-type anion exchanger, whereby if (III) contains a weakly acid cation exchanger, the positions of (I) and (III) are interchangeable, depending on the nature of the packing of the respective columns. A sprinkler is pref. placed between (I) and (II). ADVANTAGE - The process allows for a selective removal of nitrate ions from both neutral and acidic media with enhanced efficiency.</abstract><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng ; ger |
| recordid | cdi_epo_espacenet_DE4123651A1 |
| source | esp@cenet |
| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | Selective removal of nitrate ions from water or aq. solns. - by ion exchange using succession of columns with weakly acidic cation exchanger then weakly basic anion exchanger before entering column filled with buffer |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-29T19%3A53%3A37IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=HAUPTMANN,%20RUEDIGER.,%20O-4090%20HALLE,%20DE&rft.date=1993-01-21&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EDE4123651A1%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |