Sedimentation of bentonite suspensions under the influence of low molecular weight polymers based on amino ester salts
Among the available technologies for treating natural and wastewater from clay materials, coagulation/flocculation is the most common method due to its high efficiency, simplicity, and cost-effectiveness. Inorganic coagulants such as aluminum sulfate and ferric chloride, widely used as destabilizin...
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| Format: | Article |
| Language: | English |
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Voronezh State University
2023-09-01
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| Series: | Конденсированные среды и межфазные границы |
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| Online Access: | https://journals.vsu.ru/kcmf/article/view/11391 |
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| author | Dmitriy Yu. Vandyshev Olga V. Sleptsova Vladislav Yu. Gazin Stanislav A. Malyutin Naum R. Malkin Khidmet S. Shikhaliev |
| author_facet | Dmitriy Yu. Vandyshev Olga V. Sleptsova Vladislav Yu. Gazin Stanislav A. Malyutin Naum R. Malkin Khidmet S. Shikhaliev |
| author_sort | Dmitriy Yu. Vandyshev |
| collection | DOAJ |
| description | Among the available technologies for treating natural and wastewater from clay materials, coagulation/flocculation is the most common method due to its high efficiency, simplicity, and cost-effectiveness. Inorganic coagulants such as aluminum sulfate and ferric chloride, widely used as destabilizing agents for colloidal particles, have several significant drawbacks: low efficiency and toxicity. Organic reagents of both natural and synthetic origin are a good alternative.
This work is devoted to the evaluation of the flocculation action of new reagents, which are low molecular weight polymers based on amino ester salts on clay suspensions, as well as the selection of their optimal concentration, providing the maximum sedimentation rate.
Studies have shown that amino ester salts can be effectively used for the treatment of water-clay suspensions. An important factor is the nature of the anion used, which has a significant influence on the oagulation ability of esters. Thus, 40–50 % (wt.) aqueous solutions of amino ester chlorides added to clay suspensions in an amount not exceeding 0.1% (vol.) can be used to thicken clay suspensions. At the same time, aqueous solutions of amino ester bromides regardless of the concentration, introduced into bentonite suspensions of 0.1–0.4 % (vol.), contribute to improved sedimentation, reducing viscosity, and increasing filtration capacity. These results allow us to recommend the use of amino ester chlorides as a
thickener in the preparation of drilling muds for strengthening the walls of wells during drilling, and bromides – for flocculation of bentonite suspensions in oil production |
| first_indexed | 2024-03-11T19:05:00Z |
| format | Article |
| id | doaj.art-1a047177012d4e0e9c77acd007cb5cbc |
| institution | Directory Open Access Journal |
| issn | 1606-867X |
| language | English |
| last_indexed | 2024-03-11T19:05:00Z |
| publishDate | 2023-09-01 |
| publisher | Voronezh State University |
| record_format | Article |
| series | Конденсированные среды и межфазные границы |
| spelling | doaj.art-1a047177012d4e0e9c77acd007cb5cbc2023-10-10T08:41:51ZengVoronezh State UniversityКонденсированные среды и межфазные границы1606-867X2023-09-0125310.17308/kcmf.2023.25/11391Sedimentation of bentonite suspensions under the influence of low molecular weight polymers based on amino ester saltsDmitriy Yu. Vandyshev0https://orcid.org/0000-0001-8606-458XOlga V. Sleptsova1https://orcid.org/0009-0006-7467-275XVladislav Yu. Gazin2https://orcid.org/0009-0009-4000-6638Stanislav A. Malyutin3https://orcid.org/0009-0006-0572-8545Naum R. Malkin4https://orcid.org/0009-0006-9744-3044Khidmet S. Shikhaliev5https://orcid.org/0000-0002-6576-0305Cand. Sci. (Chem.), Associate Professor of the Department of Organic Chemistry, Voronezh State University (Voronezh, Russian Federation)Cand. Sci. (Chem.), Associate Professor of the Department of High Molecular Compounds and Colloidal Chemistry, Voronezh State University (Voronezh, Russian Federation)Master’s student of the 2nd year of the Department of Organic Chemistry, Voronezh State University (Voronezh, Russian Federation)Cand. Sci. (Tech.), General Director of JSC Petrochem (Belgorod, Russian Federation)Chief Technologist of JSC Petrochem (Belgorod, Russian Federation)Dr. Sci. (Chem.), Professor, Head of the Department of Organic Chemistry, Voronezh State University (Voronezh, Russian Federation) Among the available technologies for treating natural and wastewater from clay materials, coagulation/flocculation is the most common method due to its high efficiency, simplicity, and cost-effectiveness. Inorganic coagulants such as aluminum sulfate and ferric chloride, widely used as destabilizing agents for colloidal particles, have several significant drawbacks: low efficiency and toxicity. Organic reagents of both natural and synthetic origin are a good alternative. This work is devoted to the evaluation of the flocculation action of new reagents, which are low molecular weight polymers based on amino ester salts on clay suspensions, as well as the selection of their optimal concentration, providing the maximum sedimentation rate. Studies have shown that amino ester salts can be effectively used for the treatment of water-clay suspensions. An important factor is the nature of the anion used, which has a significant influence on the oagulation ability of esters. Thus, 40–50 % (wt.) aqueous solutions of amino ester chlorides added to clay suspensions in an amount not exceeding 0.1% (vol.) can be used to thicken clay suspensions. At the same time, aqueous solutions of amino ester bromides regardless of the concentration, introduced into bentonite suspensions of 0.1–0.4 % (vol.), contribute to improved sedimentation, reducing viscosity, and increasing filtration capacity. These results allow us to recommend the use of amino ester chlorides as a thickener in the preparation of drilling muds for strengthening the walls of wells during drilling, and bromides – for flocculation of bentonite suspensions in oil productionhttps://journals.vsu.ru/kcmf/article/view/11391flocculationcoagulationamino esterssedimentation raterheological propertiesbentonitedrilling fluid |
| spellingShingle | Dmitriy Yu. Vandyshev Olga V. Sleptsova Vladislav Yu. Gazin Stanislav A. Malyutin Naum R. Malkin Khidmet S. Shikhaliev Sedimentation of bentonite suspensions under the influence of low molecular weight polymers based on amino ester salts Конденсированные среды и межфазные границы flocculation coagulation amino esters sedimentation rate rheological properties bentonite drilling fluid |
| title | Sedimentation of bentonite suspensions under the influence of low molecular weight polymers based on amino ester salts |
| title_full | Sedimentation of bentonite suspensions under the influence of low molecular weight polymers based on amino ester salts |
| title_fullStr | Sedimentation of bentonite suspensions under the influence of low molecular weight polymers based on amino ester salts |
| title_full_unstemmed | Sedimentation of bentonite suspensions under the influence of low molecular weight polymers based on amino ester salts |
| title_short | Sedimentation of bentonite suspensions under the influence of low molecular weight polymers based on amino ester salts |
| title_sort | sedimentation of bentonite suspensions under the influence of low molecular weight polymers based on amino ester salts |
| topic | flocculation coagulation amino esters sedimentation rate rheological properties bentonite drilling fluid |
| url | https://journals.vsu.ru/kcmf/article/view/11391 |
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