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

• Grant number: 16/17894-2
• Support Opportunities: Scholarships in Brazil - Master
• Start date: December 01, 2016
• End date: June 01, 2018
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Valéria Guimarães Silvestre Rodrigues
• Grantee: Jéssica Pelinsom Marques
• Host 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

Abstract

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)

RAIMONDI, ISABELA MONICI; SILVESTRE RODRIGUES, VALERIA GUIMARAES; LIMA, JACQUELINE ZANIN; MARQUES, JESSICA PELINSOM; ARTIMONTE VAZ, LUIZ AUGUSTO; VIEIRA, ENY MARIA. Assessment of the use of tropical peats as local alternative materials for the adsorption of Pb, Zn and Cd: An equilibrium study. EARTH SCIENCES RESEARCH JOURNAL, v. 25, n. 1, p. 29-40, MAR 2021. (15/02529-4, 14/07180-7, 16/17894-2)

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. (15/02529-4, 14/07180-7, 16/17894-2)

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 (EESC/SBD) São Carlos.