TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The method (M1) further involves recycling the methanol or dimethyl ether for use as a fuel or feedstock; subjecting the methanol or dimethyl ether fuels or products made from the feedstock to further use to generate carbon dioxide; and repeating the capturing, combining, recycling and conversion steps of the generated carbon dioxide so that the carbon dioxide produced from the methanol fuels or products made from the methanol feedstock also is not released into the atmosphere. The combustion of petroleum oil in a power plant generates energy. The carbon dioxide, suitable light hydrocarbon fraction, and water are combined in suitable molar ratios and are reacted in separate steps or in a single step to produce methanol. The suitable hydrocarbon fractions are saturated hydrocarbons including methane, ethane, propane and butanes. The method further involves combusting the petroleum oil while producing carbon dioxide; capturing the produced carbon dioxide on an adsorbent; and treating the adsorbent to release the captured carbon dioxide for use in producing methanol or dimethyl ether. The adsorbent is treated with sufficient heating, reduced pressure, vacuum, and/or gas purge to release the captured carbon dioxide. The absorbent is a polyamino-containing polymer deposited on a nano-structured supporting having a high surface area. The polyamino-containing polymer is polyethyleneimine and the support is nano-structured fused silica or alumina. The method (M1) further involves reacting carbon dioxide with a suitable light hydrocarbon fraction and steam under steam reforming reaction conditions sufficient to form a mixture of hydrogen and carbon monoxide, reacting carbon dioxide with a suitable light hydrocarbon fraction under dry reforming reaction conditions sufficient to form a mixture of hydrogen and carbon monoxide, and combining the hydrogen and carbon monoxide produced in the steam reforming and dry reforming to form a mixture of hydrogen and carbon monoxide in a molar ratio of 2 moles of hydrogen to 1 mole of carbon monoxide for reaction to form methanol. The steam reforming and the dry reforming are performed simultaneously in a single bi-reforming step. The light hydrocarbon fraction, steam and carbon dioxide are reacted in a single step in a suitable molar ratio to form a mixture of hydrogen and carbon dioxide in a molar ratio of 2:1. The bi-reforming is carried out over a catalyst at 800-1100 degrees C. The catalyst is provided on a support of a high surface area nano-structured fumed alumina or fumed silica. The catalyst comprises vanadium, titanium, gallium, magnesium, copper, nickel, molybdenum, bismuth, iron, manganese, cobalt, niobium, zirconium, lanthanum or tin, or their oxide. The catalyst comprises a single metal catalyst, a single metal oxide catalyst, a mixed catalyst of a metal and a metal oxide, or mixed catalyst of at least one metal oxide and another metal oxide, the catalyst optionally being provided on an oxide support. The catalyst is nickel oxide (NiO) or a mixed catalyst of NiO, V2O5:Ni2O3, Ni2V2O7 and Ni3V2O5. The catalyst is NiO supported on fumed alumina or NiO/V2O5 supported on fumed silica. The method further involves dehydrating methanol by removing water under conditions sufficient to produce dimethyl ether and recycling the water from dehydration during subsequent reforming; reacting the dimethyl ether in the presence of an acidic-basic or zeolitic catalyst under conditions sufficient to form ethylene or propylene; converting ethylene or propylene under conditions sufficient to produce synthetic hydrocarbons, chemicals, or polymers; combusting the produced methanol, optionally in a mixture that includes gasoline, in a power plant that produces energy with the combusted methanol while also generating carbon dioxide and recycling the generated carbon dioxide for producing methanol; and combusting the produced dimethyl ether, as diesel oil substitute, optionally in a mixture that includes natural and light petroleum gas, in a power plant that produces energy while also generating carbon dioxide and recycling the generated carbon dioxide for producing methanol which in turn produces additional dimethyl ether. EXAMPLE - No suitable example given.