A method for treating a fluid to be scrubbed, comprising filling a scrubber with a volume of biodiesel or biomass adequate to cover a sintered permeable membrane in the reaction chamber and a bit more to create a reaction zone in not only a plurality of pores in the membrane with fluid but in a reaction zone above the membrane, then introducing fluid to be scrubbed to the membrane, building up pressure in the reaction chamber, and passing a scrubbed fluid from the reaction zone to an exit port at a rate equal to the rate the fluid to be scrubbed is introduced.