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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Autores principales:	Prado, Héctor Juan, Matulewicz, María Cristina, Bonelli, Pablo R., Cukierman, Ana Lea
Publicado:	2011
Materias:	3-chloro-2-hydroxypropyltrimethylammonium chloride Cationic polysaccharides Cationized agarose Flocculation Kaolin Water treatment 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 Seaweed Suspensions (fluids) Zeta potential cation flocculation kaolin performance assessment polysaccharide reaction kinetics seaweed water treatment
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00119164_v281_n1_p100_Prado http://hdl.handle.net/20.500.12110/paper_00119164_v281_n1_p100_Prado
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00119164_v281_n1_p100_Prado
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spelling	paper:paper_00119164_v281_n1_p100_Prado2023-06-08T14:35:18Z Potential use of a novel modified seaweed polysaccharide as flocculating agent Prado, Héctor Juan Matulewicz, María Cristina Bonelli, Pablo R. Cukierman, Ana Lea 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. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00119164_v281_n1_p100_Prado 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
collection	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, Héctor Juan Matulewicz, María Cristina Bonelli, Pablo R. Cukierman, Ana Lea 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.
author	Prado, Héctor Juan Matulewicz, María Cristina Bonelli, Pablo R. Cukierman, Ana Lea
author_facet	Prado, Héctor Juan Matulewicz, María Cristina Bonelli, Pablo R. Cukierman, Ana Lea
author_sort	Prado, Héctor Juan
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
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00119164_v281_n1_p100_Prado http://hdl.handle.net/20.500.12110/paper_00119164_v281_n1_p100_Prado
work_keys_str_mv	AT pradohectorjuan potentialuseofanovelmodifiedseaweedpolysaccharideasflocculatingagent AT matulewiczmariacristina potentialuseofanovelmodifiedseaweedpolysaccharideasflocculatingagent AT bonellipablor potentialuseofanovelmodifiedseaweedpolysaccharideasflocculatingagent AT cukiermananalea potentialuseofanovelmodifiedseaweedpolysaccharideasflocculatingagent
_version_	1768546379285659648

Potential use of a novel modified seaweed polysaccharide as flocculating agent

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