Use of ion exchange for removal of Ammonium: A biological regeneration of zeolite by Rahmani A.R. and Mahvi A.H.
Aeration / Stripping of n-Butyl Mercaptan in aqueous environment by Matsis V.M. and Grigoropoulou H.P.
Effects of pyrolysis temperature, residence time on the reactivity of clean coals produced from poor quality coals by Skodras G., Natas P., Basinas P. and Sakellaropoulos G.P.