Preface -- 1. Bio-Fuels: A Blessing in Disguise; O. Surriya et al -- 2. Energy, environment and the future of mankind; Y.T. Lee -- 3. Phyto-cover phyto-treatment technologies for enhancing environmental remediation at aluminium smelting site in India; M.N.V. Prasad -- 4. Chromium and nickel phytotoxicity; A. Fargašová, K. Mičieta -- 5. Physio-anatomical responses of plants to heavy metals; R. Batool et al -- 6. Integration of different bioindication methods (for chemical elements) - The multi-markered-bioindication-concept (MMBC); B. Markert et al -- 7. Interaction between plants and biosurfactant producing micro-organisms in petroleum contaminated Absheron soils; E. Akhundova, Y. Atakishiyeva -- 8. Phytoremediation of crude oil-contaminated soil by Medicago sativa (alfalfa) and the effect of oil on its growth; S. Minoui et al -- 9. Evaluation of Amaranthus retroflexus L. and its root associated fungi for bioremediation of petroleum polluted soils; F. Mohsenzadeh, A. Chehregam. 10. Reciprocal effects of oil-contaminated soil and Festuca arundinacea (Tall Fescue); D. Minai-Tehrani et al -- 11. Development of a new program to reduce total petroleum hydrocarbons; Time-analysis in heavy petroleum-contaminated soils by using GC-FID; R. Shirdam et al -- 12. Fundamentals of hydrogen production via biotechnology (Bio-H2); N. Azbar -- 13. The examination of effects of polycyclic aromatic hydrocarbons (PAH) on ecological system; N.Çağlarirmak et al -- 14. Evaluation of Senecio glaucus L. and its root-associated fungi for bioremediation of crude oil polluted soils; F. Mmohsenzadeh, A. Chehregani Rad -- 15. Study of root and shoot peroxidase activation in Festuca arundinacea in the light oil-contaminated soil; Z. Ghafari et al -- Index.