Por: LEONARDO HENRIQUE GOMES (UNIVERSIDADE FEDERAL DO PARANÁ (UFPR)), MARIA JOSÉ JERÔNIMO DE SANTANA PONTE (universidade federal do paraná (ufpr)), Haroldo de Araújo Ponte (UNIVERSIDADE FEDERAL DO PARANÁ (UFPR)), Irineu Antonio Schadach de Brum (univerSIDADE FEDERAL DO RIO GRANDE DO SUL (UFRGS)), Wagner Viana Bielefeldt (UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL (UFRGS)), WILLIAM HAUPT (UNIVERSIDADE DE PASSO FUNDO (UPF)), Rodrigo Helleis (UNIVERSIDADE FEDERAL DO PARANÁ (UFPR)), ELAN GABRIEL FORTESKI (UNIVERSIDADE FEDERAL DO PARANÁ (UFPR)), LUCAS APARECIDO BITEENCOURT (UNIVERSIDADE FEDERAL DO PARANÁ (UFPR)), GABRIEL HENRIQUE GOMES (UNIVERSIDADE FEDERAL DO PARANÁ (UFPR))
Resumo:
The lead slag produced in Brazil comes entirely from the lead-acid battery recycling
industry. During the battery recycling process, for each ton of metallic lead produced,
100 to 350 kg of slag is generated. This large amount of waste generated causes
serious environmental problems, where the reduction of its toxicity and its reuse are
important measures to solve its negative impact. Thus, the work methodology adopted
was the bibliographical survey on the central theme, with the objective of approaching
the battery recycling process (pyrometallurgy), presenting data and discussing the
toxicity of the slag, its generation, its physical and chemical characteristics, and the
possible environmental impacts caused by the waste if not treated and disposed of
properly. The results show that lead slag contains some toxic elements, such as lead,
zinc, and cadmium, and that if not disposed of properly, it will become a serious
problem for the environment. In addition, lead slag contains large amounts of silicon,
calcium, iron, copper and other value added metals, which can be reused as secondary
resources. Thus, improper disposal of lead waste can cause critical waste of
resources. This article therefore highlights the problems that need to be addressed
from an environmental standpoint, to ensure the sustainable development of the
industry, seeking to reduce the use of inputs and natural resources, minimizing
environmental problems.
