Treatment and recovery of contaminated railway ballast

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Turkish Journal of Engineering and Environmental Sciences
Volume:38 Issue:2
Treatment and recovery of contaminated railway ballast

Treatment and recovery of contaminated railway ballast

Authors : LUCA DI PALMA, ELISABETTA PETRUCCI

Pages : 248-255

Doi:10.3906/muh-1404-9

View : 22 | Download : 12

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Experimental tests of metal extraction from stones sampled from artificially contaminated railway ballasts are presented and discussed. Metal extraction was performed by washing with aqueous solutions of disodium ethylenediaminetetraacetate insert ignore into journalissuearticles values(EDTA);, at selected concentrations. The effectiveness of the remediation process was evaluated using leaching tests. The results indicate that the washing technology represents a successful and affordable solution for the implementation of an on-site treatment aimed at a reuse process. Adopting a 0.05 M EDTA solution, extraction yields in the range between 40% and 70% were achieved, depending on contact time and pH of the washing solution.
Keywords : Railway ballast, track maintenance, metal extraction, EDTA, leaching tests

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