Borja, R., Garrido, S. E., Martinez, L. Ramos-Cormenzana, A., Kinetic study of anaerobic digestion of olive mill wastewater previously fermented with Aspergillus, Process Biochemistry, 28, 397 (1993).
 Martin, A. Borja, R. Garcia, I. and Fiestas, J. A., Kinetics of methane production from olive mill wastewater, Process Biochemistry, 26, 101 (1991).
 Ragazzi, E. and Veronesse, G., Recherche sulle fenolissi-dasie sul contenuto in o-difenoli delle olive, Ann.Chim., 57, 1456 (1967).
 Sorlini, C., Andreoni, V., Ferrari, A. and Ranalli, G., The influence of some phenolic acids present in oil mill waters on microbic groups for the methano-genesis, Proceedings of International Symposium on Olive by Products Valorizatiomn, Sevilla, Spain pp. 81-88 (1986).
 Boari, G., Brunetti, A. Passion, R. and Rozzi, A., Anaerobic digestion of olive mill wastewaters, Agricultural Wastes, 10, 161 (1984).
 Borja, R., Martin, A., Maestro, R., Alba, J. and Fiestas, J. A., Enhancement of the anaerobic digestion of olive mill wastewater by removal of phenolic inhibitors, Process Biochemistry, 27, 231 (1992).
 Beccari, M., Majone, M., Riccardi, C., Savarese, F. and Torrisi, L., Integrated treatment of olive oil mill effluent: effect of chemical and physical pretreatment on anaerobic treatability, Wat. Sci.Tech., 40, 347 (1999).
 Box, J.D., Investigation of the folin-ciocalteau phenol reagent for the determination of polyphenolic substances in natural waters, Water Res., 17, 511 (1983).
 Palma, L.D., Merli, C., Paris, M. and Petrucci, E., A steady state model for evaluation of disc rotational speed influence on RBC kinetics: model presentation, Biosource Technol., 86, 193 (2003).
 Alemzadeh, I. and Vossoughi, M., Biodegradation of toluene by an attached biofilm in a rotating biological contactor, Process Biochem., 36, 707 (2001).
 Alemzadeh, I., Vossoughi, F. and Houshmandi, M., Phenol biodegradation by rotating biological contactor, Biochem. Eng.,11, 19 (2002).
 Brar, S. K. and Gupta, S. K., Biodegradation of trichloroethylene in a rotating biological contactor, Water Res., 34, 4207 (2000).
 Torkian, A., Alinejad, K. and Hashemian, S.J., Post-treatment of upflow anaerobic sludge blanket-treated industrial wastewater by rotating biological contactor, Water Env. Res., 75, 232 (2003). Neu, K.E., Achievement of biological nutrient removal in full-scale rotating biological contactor wastewater treatment plant, Water Sci. Tech., 26, 1115 (1992).
 Neu, K. E., Achievement of biological nutrient removal in full-scale rotating biological contactor wastewater treatment plant, Water Sci. Tech., 26, 1115 (1992).
 Su, J. L. and Ouyang, C. F., Advanced biological enhanced nutrient removal processes by the addition of rotating biological contactor, Wat. Sci. Tech., 35 153 (1997).
 Gupta, A.B. and Gupta, S.K., Simultaneous carbon and nitrogen removal from high strength domestic wastewater in an aerobic RBC biofilm, Water Res., 35, 1714 (2000).
 Raper, W.G.C. and Green, j.M., Simple process for nutrient removal from food processing effluent, Water Sci. Tech., 43, 123 (2001).
 Najafpour, G. D., Naidu, P. N. and Kamaruddin, A.H., Rotating biological contactor for biological treatment of poultry processing plant wastewater using Saccharomyces cerevisiae, AJChE., 2, 1 (2002).
 APHA Standard methods for the examination of water and wastewater, 20th Ed., American Public Health Association, Washington D.C. (1998).