Bioconversion is defined by Webster as the conversion of organic materials (as wastes) into an energy source (as methane) by processes (as fermentation) involving living organisms.

In a MAC BioConversion system, organic wastes are received and contained in recessed hoppers, which utilize a "walking floor" to move the material from the receiving end to the discharge end. From there, the material is conveyed into a "mix tank", where blending and size reduction occur.

When the batch is ready, it is loaded into BioConverters, where bioconversion actually takes place. In the BioConverters, naturally-occurring anaerobic bacteria convert the waste into BioGas, a medium-BTU gas (65% methane). This BioGas is "scrubbed" to remove hydrogen sulfide. The scrubbed BioGas is then routed to a generator set to produce electricity and to a boiler, which provides steam to a dryer. BioGas can also be used for cooking, heating, or refrigeration. With further processing, BioGas can even be used as a vehicle fuel!

Not all of the waste is converted to BioGas. Due to it's inherent nature, some of the organic material remains in the effluent from the BioConverters. This material is screened and pressed and placed in the dryer for pasteurization and moisture adjustment. The resulting BioSoil is an excellent soil amendment.

The "screened" effluent is then pasteurized to create BioGreen, a ready-made lawn food, or it can be further processed in a filter. This device separates the effluent into two products, BioTonic and BioActivator. BioTonic is a clear, bacteria-free liquid which is used to fertilize turf or food crops (soil or soil-less). BioTonic can also be used as a source of nutrients for algal cultures. BioActivator is a concentrated emulsion which is pasteurized for application to soil, increasing crop yields and restoring fertility. BioActivator can be further processed into BioFeed, suitable for inclusion in diets for animals or aquaculture, or recombined with BioSoil to produce BioFert, a low-analysis fertilizer.