Banca de QUALIFICAÇÃO: DANIELLE CRISTINE MIRANDA CAMPOS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : DANIELLE CRISTINE MIRANDA CAMPOS
DATE: 18/02/2022
TIME: 09:00
LOCAL: REMOTO
TITLE:

Development of na eletrochemical system for treating landfill leachate trough the eletrocoagulation/eletroflotation process

KEY WORDS:

Leachate, electroflotation, electrocoagulation, treatment, electrochemistry

PAGES: 30
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Físico-Química
SUMMARY:

The increase in population, technologies, industrialized products, and consumerism causes a significant increase in the generation of solid urban waste and it must be stored and treated properly and the treatment of the same is a major challenge, and it is necessary to create alternatives that aim to minimize increasingly the environmental impacts. The national solid waste policy determines that all the lixões in the country should be closed and the waste that cannot be recycled or reused should be sent to appropriate landfills, where there is an aggravating factor, the landfill leachate. Landfill leachate, popularly called leachate, is a dark, strong-smelling, viscous liquid that comes from the decomposition of organic matter. Its chemical composition may vary depending on the conditioning time, waste characteristics, and also the variation of rainfall at the site. The treatment of leachate is a great challenge, due to the complexity in the removal of the recalcitrant compounds present. Several treatment techniques have been studied, biological, physicochemical and electrolytic treatments. In this sense, the electrochemical treatment shows itself as an interesting technology in the removal of pollutants from complex effluents such as leachate. The EC/EF occurs in four steps: electrochemical generation of the coagulant agent; electrocoagulation, electroflocculation, and electroflotation. The main objective of the present work is to perform the treatment of landfill leachate (slurry) using the EC/EF process. The process was optimized with respect to the best applied potential, amount of NaCl, best removal time, best leachate concentration and best pH. The EC/EF technique using aluminum electrodes showed better decolorization efficiency of landfill leachate under the conditions of 9V, 4g of NaCl, 60 minutes, pH equal to 6, being possible to obtain approximately 100% efficiency in color removal. It is concluded that the EC/EF can be a very interesting method and through the results obtained, in general, show that the treatment used can be considered efficient in the treatment of landfill leachate.

BANKING MEMBERS:
Externo à Instituição - LEANDRO VINICIUS ALVES GURGEL - UFOP
Externo ao Programa - 1280597 - VAGNER FERNANDES KNUPP