. . "In some embodiments, the invention provides for carbon containing compositions, e.g., synthetic carbon containing compositions with ??13C values less than ???15% that further comprise particulate matter, e.g. fly ash, and a heavy metal, e.g. arsenic, beryllium, boron, cadmium, chromium, chromium VI, cobalt, lead, manganese, mercury, molybdenum, selenium, strontium, thallium, and vanadium, or deriv" . .