MARINE MACROALGA PELVETIA CANALICULATA AS A NATURAL CATION EXCHANGER FOR BARIUM REMOVAL

MARINE MACROALGA PELVETIA CANALICULATA AS A NATURAL CATION EXCHANGER FOR BARIUM REMOVAL

FONTÃO, N. C.; HACKBARTH, F. V.; MAYER, D. A.; MAZUR, L. P.; SOUZA, A. A. U.; VILAR , V. J. P.; SOUZA, S. M. A. G. U.

Pôster:

In this study, Ca-loaded macroalga Pelvetia canaliculata wasinvestigated as a natural cation exchanger for barium removal. A mass action law wasable to fit satisfactorily the equilibrium data for the ternary mixture (Ba2+/H+/Ca2+),resulting in selectivity coefficients of Ba K H = 6.88/0.41 and Ca K H = 3.08/0.03, forcarboxylic/sulphonic groups. In the packed bed column, the service capacity was 237bed-volumes (BV), treating 14.2 L of influent with a feed concentration of 2.9 mEq Ba2+/L,until the breakthrough point of 0.07 mEq Ba2+/L. Elution efficiency near to 100% wasachieved using 5 BV of 1.0 M HCl in counter-flow direction. A dynamic mass transfermodel, considering equilibrium given by the mass action law, linear driving force (LDF)approach to describe the intraparticle mass transfer resistance and the stagnated filmresistance described well the breakthrough profiles for all species obtained in a packedbed column. 

In this study, Ca-loaded macroalga Pelvetia canaliculata wasinvestigated as a natural cation exchanger for barium removal. A mass action law wasable to fit satisfactorily the equilibrium data for the ternary mixture (Ba2+/H+/Ca2+),resulting in selectivity coefficients of Ba K H = 6.88/0.41 and Ca K H = 3.08/0.03, forcarboxylic/sulphonic groups. In the packed bed column, the service capacity was 237bed-volumes (BV), treating 14.2 L of influent with a feed concentration of 2.9 mEq Ba2+/L,until the breakthrough point of 0.07 mEq Ba2+/L. Elution efficiency near to 100% wasachieved using 5 BV of 1.0 M HCl in counter-flow direction. A dynamic mass transfermodel, considering equilibrium given by the mass action law, linear driving force (LDF)approach to describe the intraparticle mass transfer resistance and the stagnated filmresistance described well the breakthrough profiles for all species obtained in a packedbed column. 

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DOI: 10.5151/cobeq2018-PT.0481

Referências bibliográficas

• [1] CECHINEL, MAP, MAYER DA, POZDNIAKOVA TA, MAZUR LP, BOAVENTURA AR, SOUZA AA, SOUZA SMAGU, VILAR VJP. Removal of metal ions from a petrochemical wastewater using brown algae as natural cation-exchangers. Chem. Eng. J, v. 286, p. 1–15, 2016. HACKBARTH FV, GIRARDI F, SOUZA SMAGU, SOUZA AAU, BOAVENTURA AR, VILAR VJP. Marine algae Pelvetia canaliculata (Phaeophyceae) as a natural cation exchanger for cadmium and lead ions separation in aqueous solutions. Chem. Eng. J, v. 242, p. 294–305, 2014. MAZUR LP, POZDNIAKOVA TA, MAYER DA, SOUZA SMAGU, BOAVENTURA AR, VILAR VJP. Cation exchange prediction model for copper binding onto raw brown marine macro-algae Ascophyllum nodosum: Batch and fixed-bed studies. Chem. Eng. J, v. 316, p. 255- 276, 2017. ZERAATKAR, AK, AHMADZADEHA H, TALEBI AF, MOHEIMANI NR, MCHENRY MP. Potential use of algae for heavy metal bioremediation, a critical review. J. Environ. Manage, v. 181, p. 817-831, 2016.

Como citar:

FONTÃO, N. C. ; HACKBARTH, F. V. ; MAYER, D. A. ; MAZUR, L. P. ; SOUZA, A. A. U.; VILAR , V. J. P. ; SOUZA, S. M. A. G. U. ; "MARINE MACROALGA PELVETIA CANALICULATA AS A NATURAL CATION EXCHANGER FOR BARIUM REMOVAL", p-1819-1822. In: . São Paulo: Blucher, 2018.
ISSN 23591757, DOI 10.5151/cobeq2018-PT.0481