NOVELTY - The system comprises an input chamber of a coal combusting apparatus configured to pulverize a coal feedstock comprising a processed biomass/cleaned coal blended compact aggregate. The compact aggregate comprises 10 wt.% coal having 50 wt.% sulfur. Another input chamber is provided in coal combusting apparatus configured to pulverize a processed biomass pellet feedstock from the processed biomass system and to feed the pulverized processed biomass pellet feedstock into the coal combusting apparatus.    USE - System for combusting coal in a coal combusting apparatus.    ADVANTAGE - The system facilitates combusting of the coal in a simple, cost-effective and eco-friendly manner with less adverse by-products, and gives an economical alternative to common sources of fuel such as coal, petroleum or natural gas.    DETAILED DESCRIPTION - The system comprises an input chamber of a coal combusting apparatus configured to pulverize a coal feedstock comprising a processed biomass/cleaned coal blended compact aggregate. The compact aggregate comprises 10 wt.% coal having 50 wt.% sulfur. Another input chamber is provided in coal combusting apparatus configured to pulverize a processed biomass pellet feedstock from the processed biomass system and to feed the pulverized processed biomass pellet feedstock into the coal combusting apparatus. An exhaust chamber is provided with a gaseous waste stream and comprises a gas separation sub-system configured to separate 50 vol.% carbon dioxide from the gaseous waste stream. A consumption sub-system is configured to receive separated carbon dioxide gas. The processed biomass system is configured to make processed biomass from unprocessed organic-carbon-containing feedstock that includes free water, intercellular water, intracellular water, intracellular water-soluble salts and plant cells. The plant cells comprise cell walls that include lignin, hemicellulose and microfibrils within fibrils. An INDEPENDENT CLAIM is included for a method for combusting coal in a coal combusting apparatus, which involves inputting unprocessed organic-carbon-containing feedstock comprising free water into a beneficiation sub-system reaction chamber.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic side view of a sub-system having four reaction chambers in parallel, a pretreatment chamber, and a vapor condensation chamber.    System (800)    Input section (802)    Mastication chamber (804)    Organic-carbon-containing feedstock hopper (806)    Pretreatment chamber (810)