Alternate fuels can be generation via biodigestion of waste agricultural product

Question

Alternate fuels can be generation via biodigestion of waste agricultural products (corn stocks, grass clippings, chicken litter, etc.) in a batch reactor. The mass of CO2 produced/hr gives an indication of the metabolic activity in the reactor. To dermine the mass of CO2/hr produced, the gas from the reactor will be dried and sieved to purify the CO2. The purified CO2 will be introduced into a vessel (V = 1 liter ± 1 ml). The vessel will be immersed in a water bath with a temperature of 25 o C ± 0.1 o C. The vessel has been instrumented to measure the pressure to ± 0.1 psia. The Ideal Gas Law used to calculate the mass of CO2. An error of up to ± 2% in the mass calculation can be tolerated. Does the mass measurement need to be redesigned? If yes, how?

Explanation / Answer

The mass measurment of CO2 gas can be done by connecting the reactor with a GC-HPLC (Gas chromatography-High Pressure Liquid chromatography) unit. This chromatogram simulataneously measures the amount of gas produced in the reaction without any error and without wastage of time and no need to purify furthur.

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