(DE4402559-C2)      Solar energy bound to plants and biological material is converted completely without residue to fuel, engine fuel, bioalcohol, biolubricants, turf, soils, fertilisers and other wholly biological (semi)finished prods. as well as thermal and electrical process energy with strict adherence to recirculation principles involving (A) raw material reception and processing, pref. mashing of fruit and preheating of the mash, (B) fermentation and alcohol distn. yielding as by-prods. water, gas, fuel oils, and slops, with the water used in the mashing process, (C) a slop processing line to obtain fodder, proteins, enzymes, water, which is used in an anaerobic fermenter, and biogas, (D) a fruit oil line for rape to obtain oil, (E) wood and straw processing line, where the material is smouldered to obtain tar oil, acetic acid, (F) opt. slaughter residue processing to obtain protein meal, (G) an N2 line to recover and process any N-contg. materials from the above processes, (H) a soil and turf line to convert waste prods. from the above processes into turf and soil, (I) an energy prodn. and utilisation line, where all fuel gas obtd. in the above processes is used to produce energy and (J) a water working up and waste water treatment line.    USE/ADVANTAGE -   An economically and ecologically satisfactory process. A highly effective process achieving high energy yields and minimising emission of harmful substances.    (WO9632460-A1)      Conversion of plant-bound solar energy comprises: (a) fermenting and distilling biomass to produce alcohol and by-products; (b) carbonising wood and simultaneously distilling tar to produce 'jet wash tar' (Strahlwaschteer) and by-products; (c) producing vegetable oil from oil seeds; (d) combining the alcohol from (a), the 'jet wash tar' from (b) and the vegetable oil from (c) to produce fuel; (e) using the by-products from (a) and (b) to generate heat and electrical power; and (f) supplying most of the electrical power to steps (a)-(d) through a network.    ADVANTAGE -   Waste materials are converted to useful prods. in an economic, efficient and ecologically safe manner.