Banca de QUALIFICAÇÃO: YAN NUNES DIAS

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : YAN NUNES DIAS
DATE: 26/02/2021
TIME: 14:00
LOCAL: meet.google.com/wug-aogd-rvr
TITLE:

"BIOCHAR AS AN ALTERNATIVE FOR THE MANAGEMENT OF ENVIRONMENTAL AND HUMAN RISK ASSESSMENT"

KEY WORDS:

Waste management; Mining waste; Cachoeira do Piriá

PAGES: 58
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUMMARY:

One of the problems in the mining process is the solid waste generated, which, depending on the ore mined, can be accompanied by potentially toxic elements (PTE) that are extremely harmful to living beings (for example lead, cadmium and arsenic). An example is MASS (mining artisanal and small-scale) in the municipality of Cachoeira do Piriá, state of Para, where gold mining is carried out. In an attempt to search for risk measurement, methodologies are proposed which attempt to simulate the severity of problems caused by contaminants in the environment and human health. However these methods use the worst risk scenario, the total levels of PTE (which requires long periods of time for changes in their values to occur). In this context, the use of bioavailability in assessing the effectiveness of the risk caused by EFAs, contributes to a more realistic determination, making it possible to enhance the use of environmental remedies. In the present research, two residues from successive mineral processes and 3 biochars, were used: residue M1, from underground mining with processing carried out through amalgamation; M2 residue, from the reuse of M1 residue through the cyanidation process; the biochars were produced at 700 °C and originated from açaí seeds, Brazil nut and Palm kernel pie. The addition of the 3 biochars positively altered the ecological indexes (RAC and PERI) and the use of EPT's bioavailability decreased the levels of risk assessment (HI), presenting itself as an efficient method to evaluate the effectiveness of the use of biochars in the recovery and reduction the risks (environmental and human) caused by potentially toxic elements (PTE).

BANKING MEMBERS:
Presidente - 6388356 - ANTONIO RODRIGUES FERNANDES
Interno - 030.493.086-56 - SILVIO JUNIO RAMOS - ITV
Externa à Instituição - CRISTINE BASTOS DO AMARANTE - MPEG
Externa à Instituição - EDNA SANTOS DE SOUZA - UNIFESSPA