TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Components: The enzyme binding material comprises lignin or macro-molecular substructures of lignin comprising para-coumaryl alcohol, coniferyl alcohol, or sinapyl alcohol. The enzyme binding material has an average molecular weight of 300-1000000 atomic mass units. The enzyme binding material has a binding efficiency of at least about 60% on a molar basis. The enzyme binding material reversibly sorbs the lytic enzyme. The enzyme binding material releases the lytic enzyme upon application of a pH change, a temperature change, a buffer solution change, or a solvent polarity change. The enzyme sorbent in the lytic enzyme recovery unit comprises an enzyme binding material containing lignin or macro-molecular substructures of lignin containing para-coumaryl alcohol, coniferyl alcohol, or sinapyl alcohol; and a substrate for supporting the enzyme binding material, where the substrate contains alginate, agar, polyacrylamide, collagen, activated carbon, porous ceramic, diatomaceous earth, nylon, cellulose, polysulfone, polyacrylate, alumina, silica, bentonite, or ion exchange resin, where the enzyme binding material has an average molecular weight of 300-1000000 atomic mass units. At least about 35% of lytic enzymes supplied to the hydrolysis unit comprise recycled enzymes.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The substrate comprises activated carbon, porous ceramic, diatomaceous earth, alumina, silica, or bentonite.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Device: The at least one enzyme recovery device comprises at least two packed beds each operable in sorption mode and regeneration mode. The biorefinery uses a lignocellulosic feedstock to produce ethanol, butanol, free fatty acids, triacylglycerides, alkyl esters, isoprenoids, lactic acid, acetic acid, butyric acid, or propionic acid. Preferred Components: The at least one enzyme recovery unit comprises a product enzyme recovery unit and a byproduct enzyme recovery unit.    TECHNOLOGY FOCUS - PHARMACEUTICALS - Preferred Components: The release material provides a pH change, a temperature change, a buffer solution change, or a solvent polarity change. The feed stream further comprises a hydrolysate material, a renewable-based material, or a byproduct material. The renewable-based material comprises ethanol, butanol, free fatty acids, triacylglycerides, alkyl esters, isoprenoids, lactic acid, acetic acid, butyric acid, or propionic acid. Preferred Method: The step of sorbing lytic enzymes has a binding efficiency of at least about 60% on a molar basis. The step of releasing the lytic enzymes occurs by a pH change, a temperature change, a buffer solution change, or a solvent polarity change. The process further involves adding lytic enzymes to hydrolyze cellulose or hemicellulose to a convertible material; converting the convertible material to a renewable material; separating byproduct from the renewable material; and returning the released enzymes to be used for additional hydrolysis.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The substrate comprises alginate, agar, polyacrylamide, collagen, nylon, cellulose, polysulfone, polyacrylate, or ion exchange resin. EXAMPLE - No suitable example given.