Title :
High gradient magnetic separation of a biologically produced FeS adsorbent using sulphate reducing bacteria
Author :
Coe, B.T. ; Gerber, R. ; Witts, D.
Author_Institution :
Dept. of Phys., Salford Univ., UK
fDate :
7/1/1998 12:00:00 AM
Abstract :
A High Gradient Magnetic Separation (HGMS) technique has been used to selectively recover biologically produced iron sulphide (FeS) particles with adsorbed heavy metal ions, from a soil remediation effluent stream. The HGMS system has been optimised and its performance investigated as a function of the magnetic field, flow rate and concentration of biological particles, with time. Results have shown that an efficiency of over 95% can be obtained, proving that HGMS is a valuable method for the concentration of heavy metal contaminated soils, especially when the adsorbed heavy metals are toxic and difficult to handle by other means
Keywords :
adsorbed layers; biological techniques; iron compounds; magnetic particles; magnetic separation; reduction (chemical); FeS; FeS adsorbent; HGMS; biological precipitation; high gradient magnetic separation; iron sulphide particles; soil remediation effluent stream; sulphate reducing bacteria; toxic heavy metal ion contaminant; Equations; Indium phosphide; Iron; Magnetic field measurement; Magnetic liquids; Magnetic separation; Microorganisms; Paramagnetic materials; Scanning electron microscopy; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
