TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The step (a) comprises mixing one or more hydrated inorganic salts with at least one metal salt, or metal hydrated salt or non hydrated salt. The step (a) is performed at -20 to 250 degrees C, preferably 20-160 degrees C, for 0.5 minutes to 168 hours, preferably 5 minutes to 4 hours. The step (a) is carried out in the presence of an organic solvent comprising alcohols, such as methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol or tert-butanol, diols and polyols, such as ethanediol, propanediol or glycerol, amino alcohols, such as ethanolamine, diethanolamine or triethanolamine, ketones, such as acetone or methyl ethyl ketone, dimethylformamide, dimethylacetamide, dimethyl sulfoxide, acetonitrile, and solvents aromatics, such as benzene, toluene, xylenes and alkanes. The step of separating the solid fraction is achieved by precipitation of the addition of at least one anti-solvent comprising water and alcohols, such as methanol, ethanol, n-propanol, isopropanol, nbutanol, isobutanol or tert-butanol, diols and polyols, amino alcohols, ketones, dimethylformamide, dimethylacetamide, dimethyl sulfoxide, acetonitrile. The step (c) is performed at a temperature of 40-60 degrees C, pH of 4.5-5.5, for a period of 1-150 hours. Preferred Components: The mole fraction of hydrated inorganic salt in the mixture of (I) and (II) is 0.05-1. The lignocellulosic biomass is present at 0.5-40, preferably 3-25 wt.%. The medium in the step (a) comprises a mixture of hydrated inorganic salts and/or metal salts. Preferred Definitions:    X = an anion halide anion comprising Cl, F, Br, I, perchlorate, thiocyanate, nitrate or acetate;    Y1 = halide anions, fluoride, chloride, bromide, acetate, triflate, nitrate, carboxylate, halogeno carboxylates, acetylacetonate, alcoholate, phenolate, sulfate (optionally substituted), alkyl sulfates, phosphates, alkyl phosphates, fluorosulfonate, alkylsulfonates, perfluoroalkylsulfonates, (perfluoroalkylsulfonyl) amides, arylsulfonates, halogen or haloalkyl (optionally substituted);    M = lithium, magnesium, calcium, potassium or sodium; and    M1a = iron, cobalt, nickel, copper, zinc, aluminum, indium, or lanthanum.