SciELO - Scientific Electronic Library Online

vol.52 issue323Influence of dispersant and accelerator additives on hydration of calcium aluminate cement and cement-matrixInfluence of the Al /clay ratio on the pillaring process of smectite author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links



Print version ISSN 0366-6913On-line version ISSN 1678-4553


PIMENTEL, P. M. et al. Characterization and use of retorted shale for adsorption of lead (II) in solution. Cerâmica [online]. 2006, vol.52, n.323, pp.194-199. ISSN 0366-6913.

There has been a growing interest in the use of cost-effective materials to remove heavy metals from wastewater. New processing techniques and adsorbents including natural clays, synthetic resins, peat and chitosan have been studied aiming at replacing activated coal. In the present investigation, retorted shale, a solid residue of the thermal transformation of oil shale, was characterized with the objective of preparing heavy metals adsorbents. In addition to the direct environmental benefits from the technology to wastewater, Brazil has the second world reserve of oil shale. The fine residue was fully characterized by different techniques including particle size determination, thermogravimetric analyses, BET, FTIR, X-ray diffraction, and SEM/EDS. The characteristics of the powder were appropriate for adsorption. Batch adsorption studies in Pb2+ synthetic solution were performed. The removal of Pb 2+ ion was found to be above 85%.

Keywords : retorted shale; adsorption; clays.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License