Eliminación de cromo y cadmio mediante Scenedesmus obliquus en estado inmovilizado

Authors

  • Alexis Pellón Centro Nacional de Investigaciones Científicas
  • Julio Frades Centro de Investigaciones Metalúrgicas
  • Anaelsis Chacón Centro Nacional de Investigaciones Científicas
  • Elsa Pérez Centro Nacional de Investigaciones Científicas
  • Antonio Oña Centro Nacional de Investigaciones Científicas
  • María del Carmen Espinosa Centro Nacional de Investigaciones Científicas
  • Caridad Ramos Alvariño Centro Nacional de Investigaciones Científicas
  • Rogelio Mayarí Centro Nacional de Investigaciones Científicas
  • Rigoberto Escobedo Centro Nacional de Investigaciones Científicas

Abstract

Dumping wastewaters from plating industry with a high content in chromium and cadmium is a potential hazard that is presented to the environment and specially to the population. It is known that some metals, including the heavy metals, at low concentrations participate in different metabolic routes, but at high concentrations are toxic for many living organisms. Some microorganisms
taking the heavy metals from the environment are capable of concentrating and accumulating large quantities of them in different citoplasmatic structures with non-toxic effects. Microalgae have affinity by the polyvalent metals making possible their use as depollutant agent in waters that contain metallic ions in solution as alternative methods when their employment is effective as recovery method. In this report a chromium and cadmium removal study from a plating wastewater, using a reactor with immobilized Scenedesmus obliquus culture was made. The removal efficiency of Cr(III) was 92,40 % and Cd(II) was 95 %. The quick increase experienced in the pH had an important effect on the form of removal of the metal for the microalga Scenedesmus obliquus, all which allowed that the metals in solution formed a precipitate and it was deposited forming a green-blue mud. It was possible to recover from 83 to 85 % of the mass of the metallic ions present in the treated wastewater. The temperature of the wastewater maintained values between 22,5 and 34 oC, which are useful for the good development of the Scenedesmus obliquus, as well as for the process of heavy metals removal.

Published

2022-05-25

How to Cite

Pellón, A. ., Frades, J. ., Chacón, A. ., Pérez, E. ., Oña, A. ., Espinosa, M. del C. ., Ramos Alvariño, C. ., Mayarí, R. ., & Escobedo, R. . (2022). Eliminación de cromo y cadmio mediante Scenedesmus obliquus en estado inmovilizado. NATIONAL CENTER FOR SCIENTIFIC RESEARCH (CENIC) CHEMICAL SCIENCES JOURNAL, 36(3), 175-180. Retrieved from https://revista.cnic.cu/index.php/RevQuim/article/view/1565

Issue

Section

Research articles