A Physicochemical Study of Al(+3) Interactions with Edible Seaweed Biomass in Acidic Waters

Authors

  • Pablo Lodeiro,

    1. Authors Lodeiro, López-García, Barriada, R. Herrero, and Sastre de Vicente are with Dept. de Química Física e Enxeñaría Química I, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Author L. Herrero is with Centro Tecnológico AIMEN, Relva, 27 A, 36410, Torneiros, Porriño, Pontevedra, Spain. Authors Cremades and Bárbara are with Dept. de Bioloxía Animal, Bioloxía Vexetal e Ecoloxía, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Direct inquiries to author Lodeiro (E-mail: plodeiro@udc.es).
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  • Marta López-García,

    1. Authors Lodeiro, López-García, Barriada, R. Herrero, and Sastre de Vicente are with Dept. de Química Física e Enxeñaría Química I, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Author L. Herrero is with Centro Tecnológico AIMEN, Relva, 27 A, 36410, Torneiros, Porriño, Pontevedra, Spain. Authors Cremades and Bárbara are with Dept. de Bioloxía Animal, Bioloxía Vexetal e Ecoloxía, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Direct inquiries to author Lodeiro (E-mail: plodeiro@udc.es).
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  • Luz Herrero,

    1. Authors Lodeiro, López-García, Barriada, R. Herrero, and Sastre de Vicente are with Dept. de Química Física e Enxeñaría Química I, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Author L. Herrero is with Centro Tecnológico AIMEN, Relva, 27 A, 36410, Torneiros, Porriño, Pontevedra, Spain. Authors Cremades and Bárbara are with Dept. de Bioloxía Animal, Bioloxía Vexetal e Ecoloxía, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Direct inquiries to author Lodeiro (E-mail: plodeiro@udc.es).
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  • José L. Barriada,

    1. Authors Lodeiro, López-García, Barriada, R. Herrero, and Sastre de Vicente are with Dept. de Química Física e Enxeñaría Química I, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Author L. Herrero is with Centro Tecnológico AIMEN, Relva, 27 A, 36410, Torneiros, Porriño, Pontevedra, Spain. Authors Cremades and Bárbara are with Dept. de Bioloxía Animal, Bioloxía Vexetal e Ecoloxía, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Direct inquiries to author Lodeiro (E-mail: plodeiro@udc.es).
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  • Roberto Herrero,

    1. Authors Lodeiro, López-García, Barriada, R. Herrero, and Sastre de Vicente are with Dept. de Química Física e Enxeñaría Química I, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Author L. Herrero is with Centro Tecnológico AIMEN, Relva, 27 A, 36410, Torneiros, Porriño, Pontevedra, Spain. Authors Cremades and Bárbara are with Dept. de Bioloxía Animal, Bioloxía Vexetal e Ecoloxía, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Direct inquiries to author Lodeiro (E-mail: plodeiro@udc.es).
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  • Javier Cremades,

    1. Authors Lodeiro, López-García, Barriada, R. Herrero, and Sastre de Vicente are with Dept. de Química Física e Enxeñaría Química I, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Author L. Herrero is with Centro Tecnológico AIMEN, Relva, 27 A, 36410, Torneiros, Porriño, Pontevedra, Spain. Authors Cremades and Bárbara are with Dept. de Bioloxía Animal, Bioloxía Vexetal e Ecoloxía, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Direct inquiries to author Lodeiro (E-mail: plodeiro@udc.es).
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  • Ignacio Bárbara,

    1. Authors Lodeiro, López-García, Barriada, R. Herrero, and Sastre de Vicente are with Dept. de Química Física e Enxeñaría Química I, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Author L. Herrero is with Centro Tecnológico AIMEN, Relva, 27 A, 36410, Torneiros, Porriño, Pontevedra, Spain. Authors Cremades and Bárbara are with Dept. de Bioloxía Animal, Bioloxía Vexetal e Ecoloxía, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Direct inquiries to author Lodeiro (E-mail: plodeiro@udc.es).
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  • Manuel E. Sastre de Vicente

    1. Authors Lodeiro, López-García, Barriada, R. Herrero, and Sastre de Vicente are with Dept. de Química Física e Enxeñaría Química I, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Author L. Herrero is with Centro Tecnológico AIMEN, Relva, 27 A, 36410, Torneiros, Porriño, Pontevedra, Spain. Authors Cremades and Bárbara are with Dept. de Bioloxía Animal, Bioloxía Vexetal e Ecoloxía, Univ. de A Coruña, Rúa da Fraga 10, 15008, A Coruña, Spain. Direct inquiries to author Lodeiro (E-mail: plodeiro@udc.es).
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Abstract

Abstract:  In this article, a study of the Al(+3) interactions in acidic waters with biomass of different edible seaweeds: brown (Fucus vesiculosus, Saccorhiza polyschides), red (Mastocarpus stellatus, Gelidium sesquipedale, Chondrus crispus), and green (Ulva rigida, Codium tomentosum), has been performed. The influence of both, the initial concentration of metal and the solution pH, on the Al-uptake capacity of the biomass has been analyzed. From preliminary tests, species Fucus vesiculosus and Gelidium sesquipedale have been selected for a more exhaustive analysis. Sorption kinetic studies demonstrated that 60 min are enough to reach equilibrium. The intraparticle diffusion model has been used to describe kinetic data. Equilibrium studies have been carried out at pH values of 1, 2.5, and 4. Langmuir isotherms showed that the best uptake values, obtained at pH 4, were 33 mg/g for F. vesiculosus and 9.2 mg/g for G. sesquipedale. These edible seaweeds have been found particularly effective in binding aluminum metal ions for most of the conditions tested. Physicochemical data reported at these low pH values could be of interest, not only in modeling aluminum-containing antacids-food pharmacokinetic processes produced in the stomach (pH values 1 to 3) but in remediation studies in acidic waters.

Practical Application:  Aluminum is thought to be linked to neurological disruptions such as Alzheimer's disease. In this article, the adsorption ability of different types of edible seaweeds toward aluminum has been studied. The choice of low pH values is due to the fact that stomach region is acidic with a pH value between 1 and 3 as a consequence of hydrochloric secretion; so physicochemical data reported in this study could be of interest in modeling drug–food interactions, in particular those referring to aluminum-containing antacids-food pharmacokinetic processes produced in the gastrointestinal tract.

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