Fuel formed of cellulosic and biosolid materials

Abstract

A fuel preferably pelletized and method of forming a fuel including a quantity of a natural particulate cellulosic material and a quantity of a particulate biosolid material from a bioslurry effluent derived substantially from fats, oils and grease (FOG) found in non-edible food residuals from sanitary sewer drainage (SSD). The biosolid material and the cellulosic material are substantially homogenous, preferably having a moisture content of from about 5% to about 15% by weight and at least substantially minus 5 mesh. A quantity of particulate synthetic polymeric thermoplastic fines material may be added for increased fuel energy content.

1 . A fuel pellet consisting essentially of a homogeneous mixture of:
 a quantity of natural particulate cellulosic material; and   a quantity of biosolid material made from a dried bioslurry effluent derived from fats, oils and grease (FOG) found in non-edible food residuals from sanitary sewer drainage (SSD).   
   
   
       2 . The fuel pellet as set forth in  claim 1 , wherein:
 said quantity of cellulosic material is about 80% by weight of said fuel; and said quantity of biosolid material is about 20% by weight of said fuel.   
   
   
       3 . A method for preparing a fuel pellet from particulate natural cellulosic material and biosolid material consisting of:
 providing particulate natural cellulosic material having a moisture content of at least about 5% by weight;   providing biosolid material consisting essentially of fats, oils and grease (FOG) derived from non-edible food residuals from santitary sewer drainage (SSD);   preparing a homogenous mixture including said particulate cellulosic material and said biosolid material; and   pelletizing said mixture by compressing and extruding said mixture.   
   
   
       4 . A fuel pellet consisting essentially of a homogeneous mixture of:
 a quantity of natural particulate cellulosic material;   a quantity of biosolid material from a dried bioslurry effluent derived from fats, oils and grease (FOG) found in non-edible food residuals from sanity sewer drainage (SSD); and   a quantity of particulate synthetic polymeric thermoplastic material;   
   
   
       5 . The fuel pellet as set forth in  claim 4 , wherein:
 said quantity of cellulosic material is about 78% by weight of said fuel pellet;   said quantity of biosolid material is about 18% by weight of said fuel pellet;   said quantity of thermoplastic material is about 2% by weight of said fuel pellet.   
   
   
       6 . A method of preparing a fuel from particulate natural cellulosic material, biosolid material, and particulate synthetic polymeric thermoplastic material consisting of:
 providing natural particulate cellulosic material having a free moisture content of at least about 5% by weight;   providing biosolid material consisting essentially of fats, oils and grease (FOG) derived from non-edible food residuals from sanitary sewer drainage (SSD);   providing particulate synthetic polymeric thermoplastic material; and   preparing a homogenous fuel mixture including said cellulosic material, said biosolid material, and said thermoplastic material.   
   
   
       7 . The method of  claim 6 , further comprising the step of:
 sieving said mixture to a maximum of minus  5  mesh.   
   
   
       8 . The method of  claim 7 , further comprising the step of:
 compressing and extruding the fuel in a die at a pressure wherein the temperature of the resulting said fuel pellets emerging from the die are from about 60° C. to about 125° C., and substantially remaining particulate.   
   
   
       9 - 12 . (canceled)