Evaluation of environmental compatibility of EAFD using different leaching standards
M G Sebag1, C Korzenowski, A M Bernardes
1Laboratório de Corrosão, Proteção e Reciclagem de Materiais (LACOR)- PPGEM, Universidade Federal do Rio Grande do Sul, Av.Bento Gonçalves 9500, sector 4, building 74-91501970, POA, RS, Brazil. mariasebag@bol.com.br
Electric Arc Furnace Dust (EAFD) poses environmental risks, with high metal leachability under acidic conditions. This study evaluated EAFD
Area of Science:
- Environmental Science
- Geochemistry
- Waste Management
Background:
- Electric Arc Furnace Dust (EAFD) is a significant waste by-product from steel manufacturing.
- Understanding the environmental compatibility of EAFD is crucial for safe disposal and potential recycling.
Purpose of the Study:
- To evaluate the environmental compatibility of Brazilian Electric Arc Furnace Dust (EAFD).
- To assess the leachability of metals from EAFD using various international standard leaching tests.
Main Methods:
- Conducted laboratory-scale leaching tests following NBR10005, AFNORX31-210, JST-13, DIN38414-S4, TCLP, and NEN 7343 standards.
- Investigated the influence of pH on metal release from EAFD.
- Performed batch and column leaching tests to determine metal dissolution.
Main Results:
- Metal leachability is highly dependent on the pH of the leaching medium.
- High metal leachability (Zn, Pb, Mn, Cd, Cu) was observed under acidic conditions (NBR10005).
- Metal leachability generally decreased with increasing pH in alkaline conditions, except for Pb and Cr.
Conclusions:
- NBR10005 classification designates EAFD as hazardous waste due to high lead (Pb) and cadmium (Cd) concentrations in leachate.
- The order of metal leaching in column tests was Pb>Cr>Zn>Mn>Cu>Cd.
- pH is a critical factor controlling metal mobility and environmental risk associated with EAFD.
More Related Videos
10:05Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation
Published on: July 4, 2014
11:19Preparation and Testing of Impedance-based Fluidic Biochips with RTgill-W1 Cells for Rapid Evaluation of Drinking Water Samples for Toxicity
Published on: March 7, 2016
Related Concept Videos
Microbial Leaching
Testing Water Quality
Quality of Water
