A thermodynamic study of arsenic adsorption onto iron species generated by electrocoagulation

Jose R. Parga, Alhondra De Los Santos, Jesús L. Valenzuela

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The present study evaluated the feasibility of using iron species generated by electrocoagulation (EC) as an adsorbent for removal As(III/As(V) from aqueous media. The full potential of EC was evident in that more than 99 percent of arsenic was removed without addition of chemical reagents. The adsorbent iron-species generated by EC was characterized by Chemical Analyses, X-Ray Diffraction and Scanning Electron Microscopy. The experimental data were correlated by employing a Langmuir adsorption isotherm. Thermodynamic parameters such as ΔH°, ΔS° and ΔG° were calculated. The adsorption process was found to be exothermic and spontaneous.
Original languageSpanish (Mexico)
Title of host publicationProceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008
Pages199-206
Number of pages8
StatePublished - 2008

Publication series

NameProceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008

Cite this

Parga, J. R., De Los Santos, A., & Valenzuela, J. L. (2008). A thermodynamic study of arsenic adsorption onto iron species generated by electrocoagulation. In Proceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008 (pp. 199-206). (Proceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008).