a method of encapsulating and sterilizing waste material is disclosed . medical waste is deposited inside of a mold . when full , the mold is charged with plastic and one of several reactants . the mold is then heated while rotated biaxially . the heat simultaneously sterilizes the waste and causes the charging materials to expand and envelop the waste , encapsulating it . the mold is then cooled while spinning biaxially , forming a hollow brick of solidified , encapsulated material in the mold . the brick of material is removed and pulverized into granules . the pulverized material is separated and readied for recycling .