Artículo
Abstract:
The zincon colorimetric method to determine metal ions in solutions is suitable for analysis of both potable and polluted waters. The zincon colorimetric method is an easy technique for zinc assessment and adds an interesting motivational aspect to study zinc removal by the green algae and the red algae. Green and red algae were collected at Argentina. A typical sorption experiment was carried out in Erlenmeyer flask, applying dry algae to zinc solution. Evaluation of the biosorbent was carried out considering the equilibrium relations. The concentration of free Zn ions in the aqueous solution was determined spectrophotometrically following the modified protocol of Platte and Marcy. Results show that the biosorption kinetic curve tends to stabilize after 60mins, suggesting saturation of the algae binding sites that remove zinc from solution. The experiment promotes biotechnology knowledge that is an emerging technology on cleaning treatment showing the potential of seaweed to remove heavy-metal ions from solution.
Registro:
| Documento: | Artículo |
| Título: | Zinc biosorption by seaweed illustrated by the zincon colorimetric method and the Langmuir isotherm |
| Autor: | Areco, M.M.; dos Santos Afonso, M.; Valdman, E. |
| Filiación: | DQIAyQF-INQUIMAE, FCEyN, UBA, Buenos Aires, Argentina Center for Mineral Technology, CODS/CETEM/MCT, Rio de Janeiro, Brazil |
| Palabras clave: | Biotechnology; Chemicals removal (water treatment); Colorimetric analysis; Heavy metals; Langmuir Blodgett films; Sorption; Zinc; Biosorption; Erlenmeyer flask; Zincon colorimetric method; Seaweed |
| Año: | 2007 |
| Volumen: | 84 |
| Número: | 2 |
| Página de inicio: | 302 |
| Página de fin: | 305 |
| Título revista: | Journal of Chemical Education |
| Título revista abreviado: | J Chem Educ |
| ISSN: | 00219584 |
| CODEN: | JCEDA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219584_v84_n2_p302_Areco |
Referencias:
- Volesky, B., (2001) Hydrometallurgy, 59, pp. 203-216
- Volesky, B., Schiewer, S., (1999) Encyclopedia of Bioprocess Engineering, pp. 433-453. , In Flickinger, M. C., Drew, S. W., Eds.; Wiley: New York
- Esteves, A., Valdman, E., Leite, S.G.F., (2000) Biotechnol. Lett., 22, pp. 499-502
- Fogarty, R.V., Dostalek, P., Patzak, M., Votruba, J., Tel-Or, E., Tobin, J.M., (1999) Biotechnol. Tech., 13, pp. 533-538
- Schiewer, S., Volesky, B., (2000) Environmental Microbe-Metal Interactions, , In Lovely, D. R., Ed.; ASM Press: Washington, DC
- Saeed, A., Iqbal, M., Akhtar, M.W., (2002) Pak. J. Sci. Ind. Res., 45, pp. 206-211
- Toxicological Profile for Zinc (2006), http://www.atsdr.cdc.gov/tfacts60.html, Agency for Toxic Substances and Disease Registry (accessed Oct); Valdman, E., Leite, S.G.F., (2000) Bioprocess Eng., 22, pp. 171-173
- Platte, J.A., Marcy, V.M., (1959) Anal. Chem., 31, pp. 1226-1228
- Lehmann, R.G., Hater, R.D., (1984) Soil Sci. Soc. Am. J., 48, pp. 769-772
- Cruz, C.C.V., da Costa, A.C.A., Henriques, C.A., Luna, A.S., (2004) Bioresource Technol., 91, pp. 249-257
Citas:
---------- APA ----------
Areco, M.M., dos Santos Afonso, M. & Valdman, E. (2007) . Zinc biosorption by seaweed illustrated by the zincon colorimetric method and the Langmuir isotherm. Journal of Chemical Education, 84(2), 302-305.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219584_v84_n2_p302_Areco [ ]
---------- CHICAGO ----------
Areco, M.M., dos Santos Afonso, M., Valdman, E. "Zinc biosorption by seaweed illustrated by the zincon colorimetric method and the Langmuir isotherm" . Journal of Chemical Education 84, no. 2 (2007) : 302-305.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219584_v84_n2_p302_Areco [ ]
---------- MLA ----------
Areco, M.M., dos Santos Afonso, M., Valdman, E. "Zinc biosorption by seaweed illustrated by the zincon colorimetric method and the Langmuir isotherm" . Journal of Chemical Education, vol. 84, no. 2, 2007, pp. 302-305.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219584_v84_n2_p302_Areco [ ]
---------- VANCOUVER ----------
Areco, M.M., dos Santos Afonso, M., Valdman, E. Zinc biosorption by seaweed illustrated by the zincon colorimetric method and the Langmuir isotherm. J Chem Educ. 2007;84(2):302-305.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219584_v84_n2_p302_Areco [ ]
