Synthesis of Polymer Grafted Starches and Their Flocculation Properties in Clay Suspension
Starch-based flocculants have been emerged as a promising alternative to conventional synthetic flocculants in wastewater treatment, especially for the treatment of oil sand tailings, as they are low cost, safe, biodegradable, fairly shear-stable, readily available from reproducible agricultural res...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/10/12/1054 |
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| author | Nana Zhao Hani Al Bitar Yunyin Zhu Yuming Xu Zhiqing Shi |
| author_facet | Nana Zhao Hani Al Bitar Yunyin Zhu Yuming Xu Zhiqing Shi |
| author_sort | Nana Zhao |
| collection | DOAJ |
| description | Starch-based flocculants have been emerged as a promising alternative to conventional synthetic flocculants in wastewater treatment, especially for the treatment of oil sand tailings, as they are low cost, safe, biodegradable, fairly shear-stable, readily available from reproducible agricultural resources, and do not result in secondary pollution. In this paper, three types of polymer-grafted starches (St-g-Polymer) with different charge properties were synthesized and their molecular structures were controlled by atom transfer radical polymerization (ATRP). The correlations between the charge properties of starch-based flocculants, external environmental parameters, and flocculation performance were systematically investigated by conducting jar tests under various environmental conditions. It was found that the charge properties of the branch chain had a significant impact on flocculation performance. The cationic St-g-Polymer demonstrated the best performance due to the grafting of the cationic monomer to the starch backbone which improved the solubility of the copolymer and aided in the removal of small/water-soluble particles. The results obtained could assist in guiding the selection and design of suitable biodegradable flocculants when treating targeted wastewater. |
| first_indexed | 2024-03-10T14:34:29Z |
| format | Article |
| id | doaj.art-e34cb9187ab54b63b257db62bccdc543 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T14:34:29Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-e34cb9187ab54b63b257db62bccdc5432023-11-20T22:22:26ZengMDPI AGMinerals2075-163X2020-11-011012105410.3390/min10121054Synthesis of Polymer Grafted Starches and Their Flocculation Properties in Clay SuspensionNana Zhao0Hani Al Bitar1Yunyin Zhu2Yuming Xu3Zhiqing Shi4Energy, Mining & Environment, National Research Council Canada, Vancouver, BC V6T 1W5, CanadaEnergy, Mining & Environment, National Research Council Canada, Vancouver, BC V6T 1W5, CanadaCanmetENERGY- Devon, Natural Resources Canada, 1 Oil Patch Dr., Devon, AB T9G 1A8, CanadaCanmetENERGY- Devon, Natural Resources Canada, 1 Oil Patch Dr., Devon, AB T9G 1A8, CanadaEnergy, Mining & Environment, National Research Council Canada, Vancouver, BC V6T 1W5, CanadaStarch-based flocculants have been emerged as a promising alternative to conventional synthetic flocculants in wastewater treatment, especially for the treatment of oil sand tailings, as they are low cost, safe, biodegradable, fairly shear-stable, readily available from reproducible agricultural resources, and do not result in secondary pollution. In this paper, three types of polymer-grafted starches (St-g-Polymer) with different charge properties were synthesized and their molecular structures were controlled by atom transfer radical polymerization (ATRP). The correlations between the charge properties of starch-based flocculants, external environmental parameters, and flocculation performance were systematically investigated by conducting jar tests under various environmental conditions. It was found that the charge properties of the branch chain had a significant impact on flocculation performance. The cationic St-g-Polymer demonstrated the best performance due to the grafting of the cationic monomer to the starch backbone which improved the solubility of the copolymer and aided in the removal of small/water-soluble particles. The results obtained could assist in guiding the selection and design of suitable biodegradable flocculants when treating targeted wastewater.https://www.mdpi.com/2075-163X/10/12/1054starchflocculantswater treatmentcharge propertiesatom transfer radical polymerization (ATRP) |
| spellingShingle | Nana Zhao Hani Al Bitar Yunyin Zhu Yuming Xu Zhiqing Shi Synthesis of Polymer Grafted Starches and Their Flocculation Properties in Clay Suspension Minerals starch flocculants water treatment charge properties atom transfer radical polymerization (ATRP) |
| title | Synthesis of Polymer Grafted Starches and Their Flocculation Properties in Clay Suspension |
| title_full | Synthesis of Polymer Grafted Starches and Their Flocculation Properties in Clay Suspension |
| title_fullStr | Synthesis of Polymer Grafted Starches and Their Flocculation Properties in Clay Suspension |
| title_full_unstemmed | Synthesis of Polymer Grafted Starches and Their Flocculation Properties in Clay Suspension |
| title_short | Synthesis of Polymer Grafted Starches and Their Flocculation Properties in Clay Suspension |
| title_sort | synthesis of polymer grafted starches and their flocculation properties in clay suspension |
| topic | starch flocculants water treatment charge properties atom transfer radical polymerization (ATRP) |
| url | https://www.mdpi.com/2075-163X/10/12/1054 |
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