NOVELTY - Method (I) of processing biomass utilizing an apparatus (10) comprising a housing (14) presenting a chamber having inlet (32), outlet (34) and shaft opening, a shaft (16) projecting through opening, a rotor coupled with shaft inside the chamber, and many protrusions extending from rotor, comprises: placing biomass in fluid medium; inducing cavitation within fluid to at least partially separate the biomass; sending biomass and fluid through inlet; rotating the rotor to further separate the biomass; heating biomass and fluid exiting the outlet; and maintaining acidity of fluid at a pH of 2-6.    USE - The method is useful for processing biomass utilizing the apparatus, where the biomass comprises corn kernels or sorghum kernels, each comprising endosperm, germ, and pericarp (all claimed), oats, soybeans, coffee berries, cassava root, sugar cane, sugar beet or algae.    ADVANTAGE - The method provides higher quality products in less time, without sulfur content (as steeping step for kernels in sulfur dioxide and water for 35-50 hours is not required).    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) an apparatus (A1) for separating joined components present in a fluid medium, comprising the housing, the shaft, the rotor and the protrusions that are spaced approximately equidistant from a center of the rotor, in which the adjacent protrusions abut each other, where the protrusions comprise first and second sets of alternating protrusions having first and second heights, respectively, and the first height is greater than the second height;    (2) an apparatus (A2) for separating joined components present in a fluid medium, comprising: a housing presenting first and second end walls and a side wall defining a chamber, an inlet in the first end wall, an outlet in the side wall, and a shaft opening in the second end wall; a shaft projecting through the shaft opening; a rotor coupled with the shaft inside the chamber, the rotor presenting a front surface facing the inlet and having many grooves formed in the front surface; and many grooves formed in the first end wall of the housing facing the rotor;    (3) an apparatus (A3) for separating joined components present in a fluid medium, comprising: a housing presenting a chamber comprising an inlet, an outlet, and a shaft opening; a shaft projecting through the shaft opening; a rotor coupled with the shaft inside the chamber; and many protrusions extending from the rotor, where the protrusions comprises first row spaced approximately equidistant from a center of the rotor, and a second row spaced approximately equidistant from the first row, and the protrusions in each of the first and second rows are spaced apart no less than approximately 6mm; and    (4) a biomass processing method (II), comprising: mixing the biomass with fluid; inducing cavitation within the fluid to at least partially separate the biomass; fractionating the biomass with at least one fractionation reactor that is operable to separate the biomass; dividing the separated biomass and fluid into light biomass material and heavy biomass material with fluid; and separating the heavy biomass material on a molecular level by increasing the acidity of the fluid and heavy biomass material, heating the fluid and heavy biomass material and passing the fluid and heavy biomass material through at least one digestion reactor.    DESCRIPTION OF DRAWING(S) - The figure shows perspective view of an apparatus.    Apparatus (10)    Housing (14)    Shaft (16)    Inlet (32)    Outlet (34)