1. Adsorption of phosphate ions by collodion-coated alumina;Aharoni;J. Chem. Technol. Biotechnol.,1979
2. Apak, R. (1991) Heavy metal and pesticide removal from contaminated ground water by the use of metallurgical solid waste sorbents. Final Report to the NATO/CCMS Pilot Study Int. Meeting entitled Demonstration of Remedial Action Technologies for Contaminated Land and Ground Water 18–22 Nov. Washington, D.C
3. Apak, R., Tütem E., Kar, F. and Hügül M. (1993) Water treatment: I. The sorption of heavy metals on to metallurgical solid waste materials. II. The photooxidation of chlorinated hydrocarbons with H2O2. Report for TÜBıTAK (The Scientific and Technical Research Council of Turkey), Project No. KTÇAG-7
4. Sorptive removal of cesium-137 and strontium-90 from water by unconventional sorbents. I. Usage of bauxite wastes (red muds);Apak;J. Nucl. Sci. Technol.,1995
5. Sorptive removal of cesium-137 and strontium-90 from water by unconventional sorbents. II. Usage of coal fly ash;Apak;J. Nucl. Sci. Technol.,1996