this apparatus and methods introduce catalysts and fluids into a media to effect remediation of contaminants , improve soil fertility and permeability , control undesirable pests , or create useful chemicals or food . the apparatus generates and releases enzymes , metabolites , and biologically active organisms . aerobic metabolism of compounds in a media is facilitated through the transfer of fluids , such as air . the apparatus and methods provide an environment for select organisms , including refugia and nutrient substrate . the biodegradable composition of the apparatus is partially transformed by catalytic treatment . catalysts or remediation agents are produced in - situ , for specific applications that provide a range of retention , activation , activity , and release profiles . the apparatus is placed in contact with media . catalytic infusion of media by biological consortia , such as fungi , releases exudates that transform or biodegrade materials . as treatment proceeds , the chemical , physical and biological properties of the media are affected .