Separator assemblies and methods

A method for separating solid particles of differing sizes, the method comprising:

• providing a solution comprising solid particles of differing sizes to a mesofluidic separator assembly at a rate of at least 1 gallon per minute, the mesofluidic separator assembly comprising at least one separator module comprising a conduit defining at least one cross sectional area and configured to facilitate the flow of solution along a horizontally aligned pressure differential axis through the conduit, the separator module defining at least two portions in the at least one cross sectional area, an upper portion of the at least two portions having members extending between sidewalls of the conduit, the members being circular in at least one cross section and arranged in rows and columns to define juxtaposed levels of members in at least one cross section, and a lower portion of the at least two portions being open to provide an expressway, the upper portion being vertically aligned above the lower portion, wherein the lower portion occupies the lowest most portion of the conduit;
• and
• flowing the solution through the separator assembly to transport smaller solid particles within the upper portion and transport larger solid particles in the expressway of the lower portion to separate the smaller solid particles from the larger solid particles.