REMOVING SOME HAZARDOUS HEAVY METAL ANIONS BY USING A NEW ANION EXCHANGER
Cross-linked sawdust bearing tertiary amine functional groups having an average capacity of 88 mEq/100 g and a strength pK b of 10 have been found to be very efficient in removing some hazardous heavy metal anions (i.e., dichromate and permanganate) from their aqueous salt solutions. It was found th...
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| Veröffentlicht in: | Polymer-plastics technology and engineering 2000-08, Vol.39 (4), p.735-742 |
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| creator | IBRAHIM, N. A. ABO-SHOSHA, M. H. EL-ALFY, E. EL-SAYED, Z. |
| description | Cross-linked sawdust bearing tertiary amine functional groups having an average capacity of 88 mEq/100 g and a strength pK
b
of 10 have been found to be very efficient in removing some hazardous heavy metal anions (i.e., dichromate and permanganate) from their aqueous salt solutions. It was found that for a given set of treatment conditions, the lower the pH, the smaller the exchanger particle size range, the higher the agitation speed, and the lower the material-to-liquor ratio, the greater is the rate and extent of removal of dichromate anions from the surrounding medium. On the other hand, the effective exchange capacity as well as the affinity for hazardous anions are affected by contact time, pollutant concentration as well as type of heavy metal anion, and the percent removal followed the descending order: MnO
4
−
> Cr
2
O
7
2−
. |
| doi_str_mv | 10.1081/PPT-100100055 |
| format | Article |
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b
of 10 have been found to be very efficient in removing some hazardous heavy metal anions (i.e., dichromate and permanganate) from their aqueous salt solutions. It was found that for a given set of treatment conditions, the lower the pH, the smaller the exchanger particle size range, the higher the agitation speed, and the lower the material-to-liquor ratio, the greater is the rate and extent of removal of dichromate anions from the surrounding medium. On the other hand, the effective exchange capacity as well as the affinity for hazardous anions are affected by contact time, pollutant concentration as well as type of heavy metal anion, and the percent removal followed the descending order: MnO
4
−
> Cr
2
O
7
2−
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b
of 10 have been found to be very efficient in removing some hazardous heavy metal anions (i.e., dichromate and permanganate) from their aqueous salt solutions. It was found that for a given set of treatment conditions, the lower the pH, the smaller the exchanger particle size range, the higher the agitation speed, and the lower the material-to-liquor ratio, the greater is the rate and extent of removal of dichromate anions from the surrounding medium. On the other hand, the effective exchange capacity as well as the affinity for hazardous anions are affected by contact time, pollutant concentration as well as type of heavy metal anion, and the percent removal followed the descending order: MnO
4
−
> Cr
2
O
7
2−
.</description><subject>Anion exchanger</subject><subject>Applied sciences</subject><subject>Dichromate</subject><subject>Exact sciences and technology</subject><subject>Exchange resins and membranes</subject><subject>Forms of application and semi-finished materials</subject><subject>Heavy metals</subject><subject>Industrial wastewaters</subject><subject>Permanganate</subject><subject>Pollution</subject><subject>Polymer industry, paints, wood</subject><subject>Removal</subject><subject>Sawdust</subject><subject>Technology of polymers</subject><subject>Wastewaters</subject><subject>Water treatment and pollution</subject><issn>0360-2559</issn><issn>1525-6111</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNptkM1rwkAQxZfSQq3tsfc99Jp2Z-Mm8bi1qwloIkZt7SVsNrtgiUY2QvG_70r6cSk8GGb4vZnhIXQP5BFIBE_z-dIDQpwIYxeoB4wyLwCAS9QjfkA8ytjwGt207YdDQtf1ULIQs2ydpBOcZzOBY_7OFy_ZKsex4OsNnokln2KeJlma4-cNXuVnlONUvHZTLN5GMU8nYnGLroysW333XftoNRbLUexNs0ky4lNP-eAfPVVGoEhEDTNANSlDQkrqnhyGQUVU5dMwAgqgy0APfV0aovVAgqoCGclSB9TvI6_bq2zTtlab4mC3O2lPBZDinEPhcih-c3D8Q8cfZKtkbazcq237ZxqEzMlhUYdt96axO_nZ2LoqjvJUN_bH4_9_4QseEWgQ</recordid><startdate>20000815</startdate><enddate>20000815</enddate><creator>IBRAHIM, N. A.</creator><creator>ABO-SHOSHA, M. H.</creator><creator>EL-ALFY, E.</creator><creator>EL-SAYED, Z.</creator><general>Taylor & Francis Group</general><general>Taylor & Francis</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20000815</creationdate><title>REMOVING SOME HAZARDOUS HEAVY METAL ANIONS BY USING A NEW ANION EXCHANGER</title><author>IBRAHIM, N. A. ; ABO-SHOSHA, M. H. ; EL-ALFY, E. ; EL-SAYED, Z.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c313t-cb81c082f5f12e0b700b2611976d0cd32781211eb6e93ebf0ee4a1cd6a8abe623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Anion exchanger</topic><topic>Applied sciences</topic><topic>Dichromate</topic><topic>Exact sciences and technology</topic><topic>Exchange resins and membranes</topic><topic>Forms of application and semi-finished materials</topic><topic>Heavy metals</topic><topic>Industrial wastewaters</topic><topic>Permanganate</topic><topic>Pollution</topic><topic>Polymer industry, paints, wood</topic><topic>Removal</topic><topic>Sawdust</topic><topic>Technology of polymers</topic><topic>Wastewaters</topic><topic>Water treatment and pollution</topic><toplevel>online_resources</toplevel><creatorcontrib>IBRAHIM, N. A.</creatorcontrib><creatorcontrib>ABO-SHOSHA, M. H.</creatorcontrib><creatorcontrib>EL-ALFY, E.</creatorcontrib><creatorcontrib>EL-SAYED, Z.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Polymer-plastics technology and engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>IBRAHIM, N. A.</au><au>ABO-SHOSHA, M. H.</au><au>EL-ALFY, E.</au><au>EL-SAYED, Z.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>REMOVING SOME HAZARDOUS HEAVY METAL ANIONS BY USING A NEW ANION EXCHANGER</atitle><jtitle>Polymer-plastics technology and engineering</jtitle><date>2000-08-15</date><risdate>2000</risdate><volume>39</volume><issue>4</issue><spage>735</spage><epage>742</epage><pages>735-742</pages><issn>0360-2559</issn><eissn>1525-6111</eissn><coden>PPTEC7</coden><abstract>Cross-linked sawdust bearing tertiary amine functional groups having an average capacity of 88 mEq/100 g and a strength pK
b
of 10 have been found to be very efficient in removing some hazardous heavy metal anions (i.e., dichromate and permanganate) from their aqueous salt solutions. It was found that for a given set of treatment conditions, the lower the pH, the smaller the exchanger particle size range, the higher the agitation speed, and the lower the material-to-liquor ratio, the greater is the rate and extent of removal of dichromate anions from the surrounding medium. On the other hand, the effective exchange capacity as well as the affinity for hazardous anions are affected by contact time, pollutant concentration as well as type of heavy metal anion, and the percent removal followed the descending order: MnO
4
−
> Cr
2
O
7
2−
.</abstract><cop>Philadelphia, PA</cop><pub>Taylor & Francis Group</pub><doi>10.1081/PPT-100100055</doi><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0360-2559 |
| ispartof | Polymer-plastics technology and engineering, 2000-08, Vol.39 (4), p.735-742 |
| issn | 0360-2559 1525-6111 |
| language | eng |
| recordid | cdi_crossref_primary_10_1081_PPT_100100055 |
| source | Taylor & Francis Journals Complete |
| subjects | Anion exchanger Applied sciences Dichromate Exact sciences and technology Exchange resins and membranes Forms of application and semi-finished materials Heavy metals Industrial wastewaters Permanganate Pollution Polymer industry, paints, wood Removal Sawdust Technology of polymers Wastewaters Water treatment and pollution |
| title | REMOVING SOME HAZARDOUS HEAVY METAL ANIONS BY USING A NEW ANION EXCHANGER |
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