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Titolo:
Phosphate adsorption on chitosan-Fe-III-crosslinking: Batch and column studies
Autore:
Fagundes, T; Bernardi, EL; Rodrigues, CA;
Indirizzi:
Univ Vale Itajai, CSS, NIQFAR, Nucleo Invest Quim Farmaceut, BR-302202 Itajai, SC, Brazil Univ Vale Itajai Itajai SC Brazil BR-302202 BR-302202 Itajai, SC, Brazil
Titolo Testata:
JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES
fascicolo: 8, volume: 24, anno: 2001,
pagine: 1189 - 1198
SICI:
1082-6076(2001)24:8<1189:PAOCBA>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
ION CHROMATOGRAPHY; PHOSPHORUS; SORPTION; REMOVAL; BEADS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Rodrigues, CA Univ Vale Itajai, CSS, NIQFAR, Nucleo Invest Quim Farmaceut,CEP 88, BR-302202 Itajai, SC, Brazil Univ Vale Itajai CEP 88 Itajai SC Brazil BR-302202 C, Brazil
Citazione:
T. Fagundes et al., "Phosphate adsorption on chitosan-Fe-III-crosslinking: Batch and column studies", J LIQ CHR R, 24(8), 2001, pp. 1189-1198

Abstract

Eutrophication is the over fertilization of a body of the water by nutrients resulting in enhanced algae growth, and phosphate is usually identified as the cause. In this work, the adsorption of phosphate on chitosan-iron(III)-crosslinked (CH-Fe-III-CL) was investigated in an experiment of solid-phase extraction. The isotherm adsorption, kinetic adsorption, and pH study were carried out in thermostatically-controlled batches. The dynamic studieswere drivers in glass columns. Batch study shows that phosphate adsorptionbecomes constant after 60 min, 7.0 is optimal pH for phosphate adsorption. Affinity constant and maximum adsorption capacity determined by Langmuir equation were 44.4 L min(-1) and 131 mg g(-1). As expected, an increase in the flowrate reduced the breakthrough volume (180 and 230 mL), exhaustion volume (380 and 420 mL), breakthrough sorption capacity (18 and 23 mg g(-1)),and exhaustion sorption capacity (32.4 and 61.4 mg g(-1)) for 2.5 mL min(-1) and 1.0 mL min(-1). Such a decrease can be ascribed to a lower residencetime.

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Documento generato il 30/03/20 alle ore 19:48:48