Study of Rhodamine B Retention by Polyurethane Foam from Aqueous Medium in Presence of Sodium Dodecylsulfate

被引：15

作者：

Baldez, Eliene E. ^{[1
]}

Robaina, Nicolle F. ^{[1
]}

Cassella, Ricardo J. ^{[1
]}

机构：

[1] Univ Fed Fluminense, Dept Quim Analit, BR-24020141 Niteroi, RJ, Brazil

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2009年 / 44卷 / 13期

关键词：

Cationic dyes; polyurethane foam; Rhodamine B; solid-phase extraction; METHYLENE-BLUE; MALACHITE-GREEN; BASIC-DYES; REACTIVE DYES; CATIONIC DYE; METAL-IONS; REMOVAL; ADSORPTION; SORPTION; DEGRADATION;

D O I：

10.1080/01496390903182396

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work reports a study about the adsorption of Rhodamine B (RB) by unloaded polyether type polyurethane foam (PUF) in a medium containing sodium dodecylsulfate (SDS). The adsorption process was based on the formation of an ionic-pair between RB and SDS, which presented high affinity by PUF. Adsorption was characterized in relation to equilibrium, kinetic, and thermodynamic aspects and the results obtained showed that the ratio between the SDS and RB concentrations played an important role on the adsorption efficiency. A maximum adsorption capacity of 6.85x10-6molRBg-1 was observed at established experimental conditions. The adsorption process was spontaneous (negative G) and presented an endothermic characteristic (positive H). Also, its rate was regulated by an intraparticle diffusion process. Sequential extraction experiments were carried out by changing PUF plugs in 30 and 60min time intervals, resulting in removal rates higher than 95%.

引用

页码：3128 / 3149

页数：22

共 47 条

[1]

Al-Duri B, 1995, USE ADSORBENTS REMOV

[2] INTRAPARTICLE DIFFUSION OF A BASIC DYE DURING ADSORPTION ONTO SPHAGNUM PEAT [J].

ALLEN, SJ ;

MCKAY, G ;

KHADER, KYH .

ENVIRONMENTAL POLLUTION, 1989, 56 (01) :39-50

[3]

ALMEIDA GN, 2007, J COLLOID INTERF SCI, V315, P63

[4] Solid-phase extraction of Cd(II) as diethyldithiocarbamate complex by polyurethane foam: Kinetic and thermodynamic characterization [J].

Ana, ODS ;

Jesuino, LS ;

Cassella, RJ ;

Carvalho, MS ;

Santelli, RE .

SEPARATION SCIENCE AND TECHNOLOGY, 2004, 39 (11) :2695-2709

[5] Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in Contact with Food on a request from the Commission to Review the toxicology of a number of dyes illegally present in food in the EU [J].

Anton, R. ;

Barlow, S. ;

Boskou, D. ;

Castle, L. ;

Crebelli, R. ;

Dekant, W. ;

Engel, K. -H ;

Forsythe, S. ;

Grunow, W. ;

Heinonen, M. ;

Larsen, J. C. ;

Leclercq, C. ;

Mennes, W. ;

Milana, M. -R. ;

Pratt, I. ;

Rietjens, I. ;

Svensson, K. ;

Tobback, P. ;

Toldra, F. .

EFSA JOURNAL, 2005, 3 (09)

[6] Removal of methylene blue by carbons derived from peach stones by H3PO4 activation:: Batch and column studies [J].

Attia, Amina A. ;

Girgis, Badie S. ;

Fathy, Nady A. .

DYES AND PIGMENTS, 2008, 76 (01) :282-289

[7] ABSORPTION BY POLYURETHANE FOAMS - NEW METHOD OF SEPARATION [J].

BOWEN, HJM .

JOURNAL OF THE CHEMICAL SOCIETY A -INORGANIC PHYSICAL THEORETICAL, 1970, (07) :1082-&

[8]

Braun T., 1985, Polyurethane foam sorbents in separation science, V1st

[9] Retention of carbaryl by polyether type polyurethane foam: a critical study [J].

Cassella, RJ ;

Garrigues, S ;

Santelli, RE ;

de la Guardia, M .

ANALYST, 2000, 125 (02) :257-261

[10] Kinetic and equilibrium studies on the removal of cationic dyes from aqueous solution by adsorption onto a cyclodextrin polymer [J].

Crini, Gregorio .

DYES AND PIGMENTS, 2008, 77 (02) :415-426

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