Raw biodiesel requires purification to remove excess methanol, unreacted and/or partially reacted starting material(s), and residual catalyst. The common practice for biodiesel purification is a series of water washes. These water washes are time consuming, generate a large aqueous waste stream, and can lead to saponification and subsequent emulsion formation. To eliminate water washes, solid materials which are capable of purifying the biodiesel after a short residence time are currently the subject of active investigation. Herein, we investigate the use of coco coir, a product of coconut husks commonly used as orchid planting material, as a bio-derived, biodegradable, and inexpensive drywash material for biodiesel fuel. Overall, we find that coco fiber (1) removes soap concentrations of > 3000 ppm in one pass through the column; (2) treats raw biodiesel at volumes which meet or exceed current industry standards; (3) is stable and effective for a time period greater than five years; (4) does not raise free fatty acid levels above acceptable levels; (5) does not add Ca2+ or Mg2+ to the purified fuel; (6) reduces methanol to acceptable levels; and (7) removes free glycerol, even when biodiesel samples are spiked with artificially large quantities of free glycerol.