An apparatus for processing a stream of material, comprising: a housing defining a chamber, the chamber having an inlet for receiving the material into the chamber, and an outlet for discharging material from the chamber; a rotatable shaft extending vertically within the chamber; a series of frequency turbine plates and boundary plates arranged at vertically spaced locations along the shaft and extending transversely within the chamber to define multiple, material processing zones within the chamber, the frequency turbine plates and boundary plates configured to permit the material to pass between the zones during operation, whereby the material to be processed is received through the inlet, passes through the material processing zones, and is discharged through the outlet; wherein the chamber includes a circumferential wall having a horizontal cross-section characterized by a minor axis and a major axis longer than the minor axis; wherein the frequency turbine plates are mounted to the shaft and extend therefrom in axial balance to terminate in outer edges; wherein the circumferential wall includes multiple tabs disposed at variably-spaced locations along the circumferential wall to form at least one asymmetric arrangement of the tabs on the circumferential wall; wherein the tabs have respective tab profiles, the tab profiles of at least two of the tabs differing from each other; wherein the tab profiles comprise surfaces angled relative to adjacent portions of the circumferential wall; wherein the asymmetric arrangement of the tabs is located on the circumferential wall relative to the boundary plates to be in operative communication with at least one of the material processing zones; and the apparatus further comprising a motor operatively connected to the shaft and adapted to rotate the frequency turbine plates at sufficient RPMs to form variable compression zones within the chamber. a housing defining a chamber, the chamber having an inlet for receiving the material into the chamber, and an outlet for discharging material from the chamber; a rotatable shaft extending vertically within the chamber; a series of frequency turbine plates and boundary plates arranged at vertically spaced locations along the shaft and extending transversely within the chamber to define multiple, material processing zones within the chamber, the frequency turbine plates and boundary plates configured to permit the material to pass between the zones during operation, whereby the material to be processed is received through the inlet, passes through the material processing zones, and is discharged through the outlet; wherein the chamber includes a circumferential wall having a horizontal cross-section characterized by a minor axis and a major axis longer than the minor axis; wherein the frequency turbine plates are mounted to the shaft and extend therefrom in axial balance to terminate in outer edges; wherein the circumferential wall includes multiple tabs disposed at variably-spaced locations along the circumferential wall to form at least one asymmetric arrangement of the tabs on the circumferential wall; wherein the tabs have respective tab profiles, the tab profiles of at least two of the tabs differing from each other; wherein the tab profiles comprise surfaces angled relative to adjacent portions of the circumferential wall; wherein the asymmetric arrangement of the tabs is located on the circumferential wall relative to the boundary plates to be in operative communication with at least one of the material processing zones; and the apparatus further comprising a motor operatively connected to the shaft and adapted to rotate the frequency turbine plates at sufficient RPMs to form variable compression zones within the chamber.