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Geological and geotechnical characterization of mixtures of residual soil from Eldorado Paulista (SP) with reactive organic materials

Grant number: 16/17894-2
Support type:Scholarships in Brazil - Master
Effective date (Start): December 01, 2016
Effective date (End): June 01, 2018
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geology
Principal Investigator:Valéria Guimarães Silvestre Rodrigues
Grantee:Jéssica Pelinsom Marques
Home Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated scholarship(s):17/15024-3 - Assessment of availability and bioaccessibility of potentially toxic metals in residual soil, BE.EP.MS


The mining activity, that has always been important to the economy, presents some environmental aspects, including the generation of waste. In Brazil neglect and lack of supervision on the disposal of mining waste are common. Improperly disposed on the ground, without control or protection, mining waste is source of contamination due to the presence of potentially toxic metals. These metals have toxicity and bioaccumulation property. Thus, it is undeniable the need for technologies that inhibit the free migration of contaminants in porous media. Use of natural materials (clay soils) in the sealing of waste disposal sites due to their high capacity of adsorption of metals and improvement of this material from mixtures with organic reactive material are examples of possible low cost solutions. Therefore, this study aims to characterize a clay residual soil collected in the Ribeira Valley region, to be used as a liner on disposal of mining residues enriched in toxic metals (Pb, Zn, Cu, As, Cd and Cr) and analyze the improvement of their performance when mixed in different proportions with organic reactive materials: peat and compost. Thus, the following tests shall be performed: granulometry, XRD, XRF, CEC, thermal analysis, SEM/EDS, determination of physicochemical parameters, Attemberg limits, MCT classification, Proctor test, permeability, triaxial compression and batch test. The geological and geotechnical characterization facilitates the understanding of the properties of materials and possible interactions that may exist with the contaminant, particularly concerning metals. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MARQUES, JESSICA PELINSOM; SILVESTRE RODRIGUES, VALERIA GUIMARAES; RAIMONDI, ISABELA MONICI; LIMA, JACQUELINE ZANIN. Increase in Pb and Cd Adsorption by the Application of Peat in a Tropical Soil. WATER AIR AND SOIL POLLUTION, v. 231, n. 3 MAR 16 2020. Web of Science Citations: 2.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MARQUES, Jéssica Pelinsom. Assessment of mixtures of residual soil from Eldorado Paulista (SP) with peat for retention of potentially toxic metals. 2018. Master's Dissertation - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos São Carlos.

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