From wastes to valuable products: Coagulants and Pigments
Dr. Jean Carlo S.S. Menezes
Chemical and Sanitary and Environmental Engineer
Postdoctoral internat at the University of Passo Fundo-Brazil
The AMD produced by the oxidation of sulfide tailings from coal mining needs to undergo a treatment process in order to reduce the acidity and the metal load discharged in the environment, in order to meet the environmental requirements, which demands a high economic cost that has to be borne by companies. The objective of the present work is to divulge a new vision about the pyritic wastes, which is the possibility of producing value-added materials using as raw material the pyrite tailings and also the ferric precipitate resulting from the neutralization of the AMD aiming at the production of a coagulant, ferric sulphate or ferric pigments such as goethite and hematite for application in the manufacture of paints and many other uses.
This course was conceived as a target audience for mine operators, project leaders, especially environmental managers, closed mine managers and professionals linked to corporate sustainability and new product development. It is also useful for supervisors of treatment plants, students and consultants in the mining industry.
Short Workshop Programme
This course will present the fundamental concepts of AMD generation and will discuss the various methods of AMD treatment used within the mineral industry for the treatment and prevention of AMD generation. Next, we will present methodologies for the production of ferric coagulants and pigments using as input the AMD generated in a coal mine in Brazil.
The main learning objectives are:
Introduction to AMD characterization
Selection of AMD samples for use in the production of coagulant and pigments
Methods of evaluating the quality of the products obtained according to the different possible uses of the products.
Use of the produced coagulant to treat a Water to Possible Human Use.
The course is expected to spark an innovative vision for the people involved in the study and management of AMD and sulfide mining tailings. Changing the paradigm of end-of-pipe vision that is traditionally applied in these cases throughout the world
Date: July, 14, 2019
Minimum: 20 delegates,
Maximum: 25 delegates
River Contamined With Acid Mine Drainage(Santa Catarina-Brazil)
Sludge Generated in the AMD Treatment (Ferric Sludge)
Used to produce the Ferric Sulphate Coagulant
Goethite Pigment Produced With AMD
Colored Cement Paste Produced With 10% of Goethite From AMD