Immobilization study of toxic elements present in coal ash through the treatment with immobilizing agents
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2017
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INTERNATIONAL WORKSHOP ADVANCES IN CLEANER PRODUCTION, 10th
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The capacyity to immobilize toxic elements present in coal ashes using organosilane (OS) and surfactant (SF) as
immobilizing agents was determined by batch experiments. The coal ashes used in the study was collected at the
Figueira Thermal Power Plant, located in the city of Figueira, State of Paraná. Firstly, the influence of ash
mass/water volume ratio on the concentration of the elements in the leachates was evaluated. Subsequently, the
capacities of immobilization of toxic elements using the different immobilizing agentes, pH and conductivity of the
leachates were determined. A significant reduction in the concentration of the elements was observed for all
leachate samples obtained from the ashes treated with OS. Concentration reductions using OS were 89%, 77%,
42% and 11% for Cr, Mo, As and Se, respectively. When SF was used to the ashes treatment, the concentration
reduction in the leachates was above 60% for all elements. These results show that both the organosilane and the
surfactant can be used as immobilizing agents for the retention of toxic elements present in coal ashes.
Como referenciar
CAMPELLO, F.A.; IZIDORO, J.C.; GHILHEN, S.N.; FUNGARO, D.A. Immobilization study of toxic elements present in coal ash through the treatment with immobilizing agents. In: INTERNATIONAL WORKSHOP ADVANCES IN CLEANER PRODUCTION, 10th, May 24-26, 2017, São Paulo, SP. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/28609. Acesso em: 21 Feb 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.