TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred System: In the system, pre-treatment stage optionally comprises an esterification reaction phase to reduce the free fatty acid content of the triacylglycerol-containing feed stock to less than or equal to 0.5%; the triacylglycerol-containing feed stock is vegetable oil, animal fat or oil, used oil or fat or waste oil and/or fat; triacylglycerol-containing feed stock is filtered at least twice and preheated to a temperature of 100-120 degrees C; the triacylglycerol-containing feed stock is mixed with an alcohol at a ratio of 5:1 by using nitrogen pressure atomization injector at a pressure of 8 to 9.5 bar; the alcohol is methanol and/or ethanol; the process tank comprises two spindles rotating in opposite direction; the triacylglycerol-containing feed stock is mixed with the alcohol at up to 15000 rpm for at least 5 minutes; the reaction stage is a single step transesterification process; the catalyst is sodium hydroxide, potassium hydroxide, barium hydroxide or calcium carbonate; the reactor tank is a fluidized bed reactor with at least one column; the reactor tank is a fluidized bed reactor with at least one microwave generator; the medium used in the fluidized bed reactor is silicon dioxide; the microwave irradiation is 0.9-2.5 GHz; the first settling and separation tank comprises a pipe for the alcohol to flow to an alcohol recovery phase; each of the settling and separation tanks comprises an overflow pipe and a collection pipe, the overflow pipe connects to the next settling and separation tank and finally into the mixing tank and the collection pipe located at the bottom of tanks connects to the glycerol collection tank; the temperature for the settling and separation process at 40-70 degrees C; the settling and separation tanks comprises at least two sensors, each located below the opening of the overflow pipe to ensure the glycerol does not flow through the overflow pipe and above the collection pipe to ensure the alkyl esters does not reach the collection pipe for the glycerol; the sensor is a conductivity sensor; the settling and separation tanks comprises a photoelectric sensor, density meter or specific gravity instruments to flow out the glycerol from the settling and separation tanks into the glycerol collection tank; the mixture is filtered with a filter cartridge of 5-10 micron; the mixture is filtered with a biosorbent material made of acid treated oil palm shell charcoal coated with chitosan; the glycerol is converted into hydrogen by a microwave assisted aqueous-phase reactor technology; the catalyst is copperchromite; the reactor tank is a fluidized bed aqueous phase reactor with at least one column; the aqueous phase reactor is equipped with at least one microwave generator; the medium used in the reactor is Teflon (RTM: polytetrafluoroethylene) bead; the optimum condition for the reaction with catalyst (1-5 wt.%) at 200-225 degrees C for at least 10 minutes; and the alcohol is recovered by distillation process where the vaporized alcohol from the settling and separation tank flows through a piping that is immersed in cold water condenser. The system is packaged in a compact container for the alkyl esters and hydrogen production. Preferred Method: The heterogeneous mixture comprises alkyl esters, glycerol and alcohol is settled and separated by density difference method involves flowing the heterogeneous mixture of alkyl esters, glycerol and alcohol from the reactor tank into a first settling and separation tank; vaporizing the alcohol into gas form and flows to an alcohol recovery phase through a pipe; separating the remaining mixture into alkyl esters and glycerol, as the first tank fills up, the alkyl esters floats above the glycerol and flows through an overflow pipe into a second settling and separation tank; and continuous flowing the alkyl esters from at least three consecutive tanks until the alkyl esters finally flows into a mixing tank, while the glycerol flows out from bottom of the tanks into a glycerol collection tank. The alkyl esters is purified into biodiesel involves separating alkyl esters that from glycerol flows into a mixing tank; mixing alkyl esters with a synthetic magnesium silicate adsorbent using a mixing pump; circulating mixture into the mixing tank and into the mixing pump at least 5 times; filtering the mixture at least three times to remove the synthetic magnesium silicate adsorbent and metallic contaminants such as but not limited to sodium, potassium, barium and calcium; and collecting the purified alkyl esters in a biodiesel collection tank. The microwave assisted aqueous-phase reactor technology involves mixing reactants comprises glycerol and water and pre-heating the reactants by microwave irradiation; mixing a catalyst with the reactants in a reactor; applying external pressure into the reactor; heating the reactor by microwave radiation after the reactor has been pressured up to at least 1.25 bar; maintaining the reaction at the highest pressure of 22 bar and temperature of 20-250 degrees C for at least 30 minutes; allowing the reactor and the reacted solution to cool down and settle for at least one hour; and collecting the hydrogen gas produced.