A coal fire plant uses 1 kg of coal to generate 1000 kWh of electricity and emits 50 kg of CO2 and 5 kg of SO2 per day. (1) If the functional unit is 1 kWh of electricity, please relate the emissions to FU. (2) What are the emissions for a plant generating 2000 kWh of electricity? (3) What if the functional unit is 1000 kWh? (4) What if the functional unit is 1000 MJ of energy? (5) What is the functional unit is 1kg of coal?
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- To produce 1000 kJ of electrical energy, the turbine of a power plantconsumes 2860 kJ. What is the energy efficiency of the turbine ?according to the chart pie 1)what percentage of energy is produced by fossil fuel? 2)what percentage of energy is produced by energy technologies? 3) how much energy is produced by all alternative energy combined? U.S. energy consumption by energy source, 2017 Total 97.7 quadrillion British thermal units (Btu) Total = 11.0 quadrillion Btu geothermal 2 % solar 6% petroleum 37% - wind 21% biomass waste 4% biofuels 21% renewable energy 11% nuclear electric power 9% biomass 45% natural gas 29% wood 19% coal 14% hydroelectric 25%Environmentally conscious Susan has been told that a newelectric car will only generate 6 ounces of greenhouse gases (GHG) permile, but that a standard internal combustion car is double that at 12ounces per mile. However, the nature of electric cars is such that the new technology and electric batteries generate 30,000 lbs. of GHG to manu-facture and another 10,000 lbs. to recycle. A standard car generates only 14,000 lbs. of GHG to manufacture, and recycling with established tech-nology is only 1,000 lbs. Susan is interested in taking a systems approach that considers the life-cycle impact of her decision. How many miles mustshe drive the electric car for it to be the preferable decision in terms ofreducing greenhouse gases?
- For scenario 2, below write the following 1.the process that the sets of measurements represent. 2.suitable equations of the process. 3.the calculated rates and 4.the resulting units for the process as expressed by your calculation. Scenario 2 Time,0 minutes:7.13mg/L O2 Time,20 minutes:13.39mg/L O2 Algal biomass:2.3g fresh massIf a plant is removed from its natural environment and exposed to 100 percent CO2 composed of the radioisotope 14C, which of the following will not occur?what is The standard free energy change for the combined system that you wrote in the previous problem
- Approximately how many tons of carbon (C) does 2 tons of dry wood contain?A photobioreactor (PBR) system is used to sequester CO₂ from a small boiler operating at 20 kWth, fired with natural gas and with a capacity factor of 25%. Assuming that the microalgae can grow at 2 g/L-day over 365 days per year and utilize the emitted carbon, calculate the total reactor volume that is needed to sequester 100% of the CO₂ emissions per year. Briefly comment on your answer and potential problems of this CCS method.The chemical reaction equation for the conversion of ethanol (C2H5OH) to acetic acid (CH3COOH) is: C2H5OH + O2 → CH3COOH + H2OIn a vinegar production industry, acetic acid is produced from ethanol during the growth of the bacterium Acetobacter aceti, whose cellular composition is CH1,8O0,5N0,2. The biomass yield from substrate is 0.14 g/g, while the product yield also from substrate is 0.92 g/g. Ammonia is used as a nitrogen source. Based on this information, answer: (a) What is the oxygen demand for acetic acid production in this crop?(b) What are the cooling requirements of a bioreactor containing 3000 L of ethanol (ρ = 789 kg/m³), to be completely converted into acetic acid?
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