Removal of copper ions from aqueous solutions by a steel-making by-product.
A study is made of the use of a steel-making by-product (rolling mill scale) as a material for removing Cu(2+) ions from aqueous solutions. The influence of contact time, initial copper ion concentration and temperature on removal capability is considered. The removal of Cu(2+) ions from an aqueous solution involves two processes: on the one hand, the adsorption of Cu(2+) ions on the surface of mill scale due to the iron oxides present in the latter; and on the other hand, the cementation of Cu(2+) onto metallic iron contained in the mill scale. Rolling mill scale is seen to be an effective material for the removal of copper ions from aqueous solutions.
López
F A
FA
Department of Primary Metallurgy and Materials Recycling, National Centre for Metallurgical Research (CENIM), CSIC, Avda. Gregorio del Amo, 8, 28040 Madrid, Spain. flopez@cenim.csics.es
Martín
M I
MI
Pérez
C
C
López-Delgado
A
A
Alguacil
F J
FJ
D000327:Adsorption; D003247:Conservation of Natural Resources; D003252:Construction Materials; D003300:Copper / Q000737:chemistry / Q000302:isolation & purification*; D007220:Industrial Waste; D007477:Ions; D013232:Steel; D013696:Temperature; D014873:Water Pollutants / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*
D007220:Industrial Waste; D007477:Ions; D014873:Water Pollutants; D013232:Steel; D003300:Copper