Potential use of a novel modified seaweed polysaccharide as flocculating agent
Flocculation performances of cationized agaroses of different degrees of substitution in the range 0.04-0.77 are reported for the first time. The cationized agaroses were successfully synthesized by the reaction of agarose with 3-chloro-2-hydroxypropyltrimethylammonium chloride in alkaline medium. T...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00119164_v281_n1_p100_Prado |
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todo:paper_00119164_v281_n1_p100_Prado2023-10-03T14:10:16Z Potential use of a novel modified seaweed polysaccharide as flocculating agent Prado, H.J. Matulewicz, M.C. Bonelli, P.R. Cukierman, A.L. 3-chloro-2-hydroxypropyltrimethylammonium chloride Cationic polysaccharides Cationized agarose Flocculation Kaolin Water treatment 3-chloro-2-hydroxypropyltrimethylammonium chloride Agarose Alkaline medium Bridge formation Cationic polyacrylamides Cationic polysaccharide Cationized Charge neutralization Degrees of substitution Flocculating agents Kaolin particles Kaolin suspensions Model system Zeta potential measurements Chlorine compounds Kaolin Seaweed Suspensions (fluids) Water treatment Zeta potential Flocculation cation flocculation kaolin performance assessment polysaccharide reaction kinetics seaweed water treatment Flocculation performances of cationized agaroses of different degrees of substitution in the range 0.04-0.77 are reported for the first time. The cationized agaroses were successfully synthesized by the reaction of agarose with 3-chloro-2-hydroxypropyltrimethylammonium chloride in alkaline medium. Two of the cationized agaroses with degrees of substitution of 0.19 and 0.58, presented colloid flocculation performances comparable to commercial cationic polyacrylamides, as determined from assays using kaolin suspensions as model systems. Zeta potential measurements for the cationized agarose that presented the best performance suggested that bridge formation, rather than charge neutralization, should be the main mechanism responsible for flocculation of kaolin particles. Cationized agaroses may constitute a new flocculating agent with promising properties for water treatment, especially if the source of the agarose is a seaweed species of easy availability. © 2011 Elsevier B.V. Fil:Prado, H.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Matulewicz, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bonelli, P.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cukierman, A.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00119164_v281_n1_p100_Prado |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
3-chloro-2-hydroxypropyltrimethylammonium chloride Cationic polysaccharides Cationized agarose Flocculation Kaolin Water treatment 3-chloro-2-hydroxypropyltrimethylammonium chloride Agarose Alkaline medium Bridge formation Cationic polyacrylamides Cationic polysaccharide Cationized Charge neutralization Degrees of substitution Flocculating agents Kaolin particles Kaolin suspensions Model system Zeta potential measurements Chlorine compounds Kaolin Seaweed Suspensions (fluids) Water treatment Zeta potential Flocculation cation flocculation kaolin performance assessment polysaccharide reaction kinetics seaweed water treatment |
| spellingShingle |
3-chloro-2-hydroxypropyltrimethylammonium chloride Cationic polysaccharides Cationized agarose Flocculation Kaolin Water treatment 3-chloro-2-hydroxypropyltrimethylammonium chloride Agarose Alkaline medium Bridge formation Cationic polyacrylamides Cationic polysaccharide Cationized Charge neutralization Degrees of substitution Flocculating agents Kaolin particles Kaolin suspensions Model system Zeta potential measurements Chlorine compounds Kaolin Seaweed Suspensions (fluids) Water treatment Zeta potential Flocculation cation flocculation kaolin performance assessment polysaccharide reaction kinetics seaweed water treatment Prado, H.J. Matulewicz, M.C. Bonelli, P.R. Cukierman, A.L. Potential use of a novel modified seaweed polysaccharide as flocculating agent |
| topic_facet |
3-chloro-2-hydroxypropyltrimethylammonium chloride Cationic polysaccharides Cationized agarose Flocculation Kaolin Water treatment 3-chloro-2-hydroxypropyltrimethylammonium chloride Agarose Alkaline medium Bridge formation Cationic polyacrylamides Cationic polysaccharide Cationized Charge neutralization Degrees of substitution Flocculating agents Kaolin particles Kaolin suspensions Model system Zeta potential measurements Chlorine compounds Kaolin Seaweed Suspensions (fluids) Water treatment Zeta potential Flocculation cation flocculation kaolin performance assessment polysaccharide reaction kinetics seaweed water treatment |
| description |
Flocculation performances of cationized agaroses of different degrees of substitution in the range 0.04-0.77 are reported for the first time. The cationized agaroses were successfully synthesized by the reaction of agarose with 3-chloro-2-hydroxypropyltrimethylammonium chloride in alkaline medium. Two of the cationized agaroses with degrees of substitution of 0.19 and 0.58, presented colloid flocculation performances comparable to commercial cationic polyacrylamides, as determined from assays using kaolin suspensions as model systems. Zeta potential measurements for the cationized agarose that presented the best performance suggested that bridge formation, rather than charge neutralization, should be the main mechanism responsible for flocculation of kaolin particles. Cationized agaroses may constitute a new flocculating agent with promising properties for water treatment, especially if the source of the agarose is a seaweed species of easy availability. © 2011 Elsevier B.V. |
| format |
JOUR |
| author |
Prado, H.J. Matulewicz, M.C. Bonelli, P.R. Cukierman, A.L. |
| author_facet |
Prado, H.J. Matulewicz, M.C. Bonelli, P.R. Cukierman, A.L. |
| author_sort |
Prado, H.J. |
| title |
Potential use of a novel modified seaweed polysaccharide as flocculating agent |
| title_short |
Potential use of a novel modified seaweed polysaccharide as flocculating agent |
| title_full |
Potential use of a novel modified seaweed polysaccharide as flocculating agent |
| title_fullStr |
Potential use of a novel modified seaweed polysaccharide as flocculating agent |
| title_full_unstemmed |
Potential use of a novel modified seaweed polysaccharide as flocculating agent |
| title_sort |
potential use of a novel modified seaweed polysaccharide as flocculating agent |
| url |
http://hdl.handle.net/20.500.12110/paper_00119164_v281_n1_p100_Prado |
| work_keys_str_mv |
AT pradohj potentialuseofanovelmodifiedseaweedpolysaccharideasflocculatingagent AT matulewiczmc potentialuseofanovelmodifiedseaweedpolysaccharideasflocculatingagent AT bonellipr potentialuseofanovelmodifiedseaweedpolysaccharideasflocculatingagent AT cukiermanal potentialuseofanovelmodifiedseaweedpolysaccharideasflocculatingagent |
| _version_ |
1782025866828578816 |