List of Contributors. 1. Bioaccumulation of Yttrium: A Microbial Model for the Management of Nuclear Wastes; V.D. Appanna, et al. 2. The Removal of Metal Ions from Aqueous Solutions by Bone Char Sorption; C.W. Cheung, et al. 3. Fermentation Parameters in Solid State Fermentation of Streptomyces sp. Cultured on Chitin; C.A.B. Davidson, J.F. Pederby. 4. Characterizing the Role of Bacteria and Bacterial Activities in the Emulsification and Degradation of Triglycerides; M. Ewell, et al. 5. The Influence of Pseudomonas putida CP1 on the Degradation of Mono-Chlorophenols by a Mixed Microbial Population; A. Farrell, B. Quilty. 6. The Use of Immobilised Rhizopus oryzae as a Biosorbent for Reactive Dye and Metal Ions; K.A. Gallagher, et al. 7. The Deterioration of Biodegradable Plastic Films and Fishing Lines by Microorganisms in Soil, Sewage, and Sea Water; T. Ishida, H. Ichigo. 8. Broad Spectrum Decolorizing Bacterial Strains and Their Functional Plasmids; H. Jian, et al. 9. Degradative Potential of Microorganisms from DDT-Contaminated Soils; A.L. Juhasz, R. Naidu. 10. Estimation of Nitrogen Requirement in Peat and Perlite Biofilters Removing Hexane from Air; O. Kibazohi, et al. 11. The Production of Various Adsorbents from Lignite, and the Thermal Conductivity of the Optimum Adsorbent under Methane at Low Pressures; S.C. McCarroll, et al. 12. Ion-Exchange Removal of Ammonium Ions from Secondary Treatment Wastewaters and Dilute Solutions Using Clinoptilolite; R.J. Mc Veigh, L.R. Weatherley. 13. Characteristics and Mechanisms of Mercury Resistance of the Anaerobic Bacteria Isolated from Mercury Polluted Sea Bottom Sediment; M. Narita, G. Endo. 14. Photocatalysis for Pretreatment of Metal-Containing Samples and for Removing Metals from the Waste; A.-L. Nguyen, et al. 15. Molecular Genetics of Bacterial Polyphosphate Accumulation to Better Understand the Mechanism Underlying Biological Phosphorus Removal; H. Ohtake, et al. 16. The Influence of Environmental Conditions on the Ability of a Mixed Microbial Population to Degrade 4-Chlorophenol; M. O'Sullivan, B. Quilty. 17. Immobilised Enzymes: Characterisation and Functional Meaning in Soil Amendments of Organic Wastes; J.A. Pascual, et al. 18. Biocontrol of Cellulose Wastes Pollution Using Immobilized Fungi on Complex Polyhydrogels; M. Petre, et al. 19. Seasonal Variations in Spectral Reflectance of Microbial Flocculates, Precipitates, and Oil-Like Films Associated with Neutral and Acidic Mine Drainage; E.I. Robbins, et al. 20. Evaluation of Ecotoxicological Effects of Diaryl Ethers on Green Algae; S.J. Todd, et al. 21. Effects of Culture Temperature on the Quality of Compost during Curing Stage; P.K. Shin, H.K. Bae. 22. Remediation of Chlorinated Hydrocarbon Solvents; S.N. Mol, et al. 23. Microbiological and Chemical Methods for Decolorization of Molasses-Derived Alcohol Distillery Effluent; M.L. Paje, et al. 24. A Robust Model for Wastewater Treatment in Sequencing Batch Reactors; W.A. Al-Masry, A.E. Abasaeed. 25. Primary Treatment Options for Fish Processing Effluent in Ireland: Pilot Scale Trials of Physicochemical and Biological Treatments; R.E. Dick, et al.