NOVELTY - Producing a duckweed biosynthetic fuel comprises: e.g. (a) separating duckweed from its aqueous growth media and macerating the duckweed to form a pulverized duckweed feedstock; (b) mixing the duckweed feedstock with radicalized sugar solution reagent with hydroxyl (OH) gases and liquids; (c) fermenting the pulverized duckweed feedstock and the sugar solution reagent; (d) adding and adsorbing vegetable, synthetic/petroleum-based oils to the fermented duckweed feedstock to form a duckweed fuel reagent mixture; and (e) holding and fermenting the mixture in the dark.    USE - The process is useful for producing duckweed biosynthetic fuel (claimed).    ADVANTAGE - The method produces bio-synthetic fuel without the need for oil or alcohol extraction and is suitable for co-firing with liquid as well as solid carbon based fuels. The duckweed bio-synthetic fuel containing water and oil mixtures does not require emulsification before burning, but is simply stirred to insure adequate mixing. When co-fired with solid fuels, natural gas, propane, and other combustible gases, and liquid fuels, the duckweed bio-synthetic fuel is particularly suited for two-flame propagation combustion. It also uses all varieties and fractions of the duckweed photo biomass for combustion, thus saving energy distillation and costs of conventional biofuel processes, such as ethanol production.    DETAILED DESCRIPTION - Producing a duckweed biosynthetic fuel comprises: (a) separating duckweed from its aqueous growth media and macerating the duckweed to form a pulverized duckweed feedstock with cellular fragments, which adsorb hydroxyl radical gases and liquids from fermented sugars; (b) mixing the duckweed feedstock together with a 15-25 parts by weight (pbw) of radicalized sugar solution reagent with OH gases and liquids in solution made from (i) a given volume of sugar feedstock containing (x) moles of sugars and cellulose composition with (ii) a dilute volume of hydrogen peroxide containing (y) moles of hydrogen peroxide, where the ratio of moles of sugars to moles of hydrogen peroxide (x/y) is selected to provide the desired combustion properties of a resultant fuel additive, (iii) an iron(II) catalyst which initially turns green in the presence of the hydrogen peroxide solution, (iv) sufficient volume of diluted sulfuric acid to turn the green iron(II) catalyst solution to a yellow/brown iron solution at a pH of 5.5, and mixing the sugar feedstock with the yellow/brown iron(III) solution and holding the yellow/brown iron solution for 48 hours or more in the dark at a pH of 5-6.5 until the sugars crosslink to form numerous OH, O double bonds, and O-R groups to produce a radicalized sugar solution reagent; (c) holding the pulverized duckweed feedstock and radicalized sugar solution reagent under dark anaerobic conditions to ferment and modify available proteins and carbohydrates into volatile fatty acids to produce fermented duckweed feedstock; (d) adding and adsorbing sufficient vegetable, synthetic or petroleum-based oils to the fermented duckweed feedstock to form a duckweed fuel reagent mixture containing 70-80 wt.% of fermented duckweed feedstock, 15-25 wt.% of radicalized sugar solution reagent, and 5-30 wt.% of oil; (e) holding and fermenting the duckweed fuel reagent mixture in the dark under anaerobic conditions until a duckweed bio-synthetic fuel is produced; and (f) flame testing various bio-synthetic fuel mixtures and adjusting the oil to radicalized sugar solution ratio until a bio-synthetic fuel mixture with the desired flame characteristics are achieved for co-firing with 50-95 wt.% of pulverized solid or fluid carbon fuel sources. INDEPENDENT CLAIMS are included for:    (1) the duckweed bio-synthetic fuel produced by the method; and    (2) a method of using the bio-synthetic fuel including varying the ratio of biosynthetic fuel co-fired with a pulverized solid or fluid carbon fuel to meet combustion performance requirements.