TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The first solvent is: inorganic acids, preferably sulfuric acids, hydrochloric acid, nitric acid, phosphoric acid, or polyphosphoric acid; inorganic hydroxides, preferably potassium hydroxide, sodium hydroxide or lithium hydroxide; organic acids, preferably formic acid, acetic acid, propionic acid, butyric acid ammonia or hydrazine; ionic solutions, preferably lithium chloride/N,N-dimethylacetamide, lithium bromide/N,N-dimethylacetamide, 1-butyl-3-methylimidazolium hexafluorophosphate, dimethylsulfoxide/tetrabutylammonium fluoride trihydrate; solutions of at least one transition metal complex, preferably of 1,2-ethylenediamine cadmium hydroxide (Cadoxen, (Cd(H2N-(CH2)2-NH2)3)(OH)2), cuprammonium hydroxide (Cuam, (Cu(NH3)4)(OH)2), 1,2-ethylenediamine copper hydroxide (Cuen, (Cu(H2N-(CH2)2-NH2)2)(OH)2), 1,3-propylenediamine copper hydroxide (Cupren, (Cu(H2N-(CH2)3-NH2)2)(OH)2), 1,2-ethylenediamine palladium hydroxide (Pd-en, (Pd(H2N-(CH2)2-NH2))(OH)2), 1,2-ethylenediamine cobalt hydroxide (Cooxen, (Co(H2N-(CH2)2-NH2)2)(OH)2), (Zincoxen, (Zn(H2N-(CH2)2-NH2)2)(OH)2), nickel ammonium hydroxide (Nioxam, (Cu(NH3)6)(OH)2), 1,2-ethylenediamine nickel hydroxide (Nioxen, (Ni(H2N-(CH2)2-NH2)3)(OH)2) and/or tri-aminoethlyamine nickel hydroxide (Nitren, (Ni(NH2CH2 CH2)3N)(OH)2); and/or water. The alkanes are 8C or less alkanes, preferably pentane, hexane, cyclo hexane, heptane, octane and/or their isomers.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The apparatus further comprises a fourth introduction means (214) for introducing a third solvent for removing residual first solvent, residual precipitant and/or residual second solvent from the precipitate into the first container for contacting the precipitate with the third solvent.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The step (b) is performed at the same time as step (c). The method further comprises: contacting the precipitate with a third solvent for removing residual first solvent, residual precipitant and/or residual second solvent from the precipitate; contacting the precipitate with a fourth solvent for dissolving and/or re-suspending the cellulose and/or hemicellulose, where the fourth solvent is water and buffer solutions; and performing an aerobic or anaerobic fermentation of the cellulose, the hemicellulose, and/or the lignin. Preferred Components: The ethers are 8C or less esters, preferably methyl-tert. butylether (MtB ether), ethyl-tert. butylether (EtB ether), propyl-tert. butyl ether, butyl-tert. butyl ether, dimethyl ether, methyl ethyl ether, diethyl ether, methyl propyl ether, ethyl propyl ether, methyl butyl ether, methyl pentyl ether, ethyl butyl ether, dipropyl ether, methyl hexyl ether, ethyl pentyl ether, propyl butyl ether, methyl heptyl ether, ethyl hexyl ether, propyl pentyl ether, dibutyl ether and/or their isomers, methyl acetate, ethyl acetate, propyl acetate, butyl acetate, pentyl acetate, hexyl acetate, methyl formate, ethyl formate, propyl formate, butyl formate, pentyl formate, hexyl formate, heptyl formate, methyl propionate, ethyl propionate, propyl propionate, butyl propionate, pentyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate, butyl butyrate, methyl pentanoate, ethyl pentanoate, propyl pentanoate, methyl hexanoate and/or ethyl hexanoate. The second solvent is: ketones with 7C or less, preferably dipropylketone, ethyl-butyl-ketone, methyl-pentyl-ketone, ethyl-propyl-ketone, methyl-butyl-ketone, diethylketone, methyl-propyl-ketone, methyl-ethyl-ketone, acetone, and isomers the ketones; alcohols, preferably hexanol, pentanol, butanol, propanol, ethanol, methanol and isomers; aldehydes, preferably hexanal, pentanal, butanal, propanal, ethanal and isomers of the aldehydes; and/or water. The third solvent is water or hemicellulose solution, preferably saturated hemicellulose solution. The ratio of the first solvent to the biomass is at least 5:1 (w/w). The volumetric ratio of the first solvent and the precipitant is 1:1-1:3 (vol/vol). EXAMPLE - Lignocellulose containing biomass in the form of crushed leaves (1 g) were mixed with 80% of phosphoric acid (H3PO4) (7.5 ml) as a first solvent and stirred at 50 degrees C for 40 minute. The solution was precipitated with pre-cold mixture of ethyl-tert. butylether, ethyl-tert. butylether (EtB ether) (ETBE)/acetone as precipitant. The solid phase was separated by centrifugation and the supernatant was collected. The acetone was distilled from the supernatant and recycled. The organic phase was removed. The ETBE of the organic phase was removed by distillation and lignin (80 mg) was recovered. The solid phase containing cellulose and hemicellulose was washed for 2 times with distilled water (5 ml) as a third solvent to remove remaining H3PO4, EtB ether and acetone. The resulting solution was fermented by Trichoderma enzyme.