TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The pellet also comprises waste substance(s) of high fuel value chosen from hydrocarbon, carbon, safe industrial waste, commercial and institutional waste, wood, rubber, fibrous material, carpet, underlay, vinyl flooring, rubbers, tires, automotive insulation, compost residue, coal dust, fabrics, leather, furniture, peat, hemp, jute, sugarcane, coconut husks, corn husks, rice husks, sewage sludges, and/or wood and paper fibers. The hydrocarbon is petroleum coke, the carbon is bottom ash, the rubber is synthetic rubber, the wood is chosen from barks, chips, saw dust, plywood, particle board, pallets, skids, bush, tree branches and yard waste, and fibers are chosen form corrugated cardboard, newspaper, packaging, box board, aseptic board and pulp sludges. The municipal solid waste is free of recyclable materials such as glass, metals, plastics and paper. Emissions released from combustion of the pellet contain less than 17 mg/Rm3 of particulate matter, less than 14 mug/Rm3 of cadmium, less than 142 mug/Rm3 of lead, less than 20 mug/Rm3 of mercury, less than 0.14 ng/Rm3 of dioxin/furan, less than 27 mg/Rm3 of hydrochloric acid, less than 56 mg/Rm3 of sulfur dioxide, and less than 110 ppm of nitrogen oxides. The pellet on combustion at 1150degreesC in air produces less than 10 wt.% of bottom ash. The pellet has fuel value of preferably 12500-14000 BTU per pound, water content of preferably 1-7 wt.%, length of 3 cm or more, preferably 5-15 cm, and width of 1 cm or more, preferably 3.5-8 cm, and has circular cross-section. Preferred Process: Anaerobic digestion is performed after separating recyclable materials, for 15-25 days. Gas produced from digestion is used to drive a gas-fired turbine engine or used to dry the waste. The amount of municipal solid waste and the amount of additional waste substance are controlled so that the pellet so obtained has fuel value of 10000 BTU per pound or more. EXAMPLE - Municipal solid waste (in %) (64) having fuel value of 8000 BTU/lb, was mixed with wastes having high BTU values such as hydrocarbons (18) having fuel value of 16000 BTU/lb, carpet (11) having fuel value of 16500 BTU/lb and wood (7) having fuel value of 10000 BTU/lb, and pelletized to form combustible pellet with moisture content of 4.41 weight% (wt.%), volatile matter of 69.48 wt.%, carbon including residual carbon after pellet combustion of 12.94 wt.%, bottom ash and fly ash of 3.17 wt.% and fuel value of 10500 BTU/lb.