Abstract
This research study about the abatement cost of CO2 reduction by using fly ash as a clinker substitute in Thailand cement industry. And also present the sensitivity analysis about the factors that affect the abatement cost. The proportion of quantity to use fly ash as a clinker is equal to 1: 1 ton, therefor will calculate at 1 ton of clinker which make the quantity of mitigated CO2 in this research is equal to 0.825 tonCO2/year. Use the information in year 2015 to analyze, such as the exchange rate, fly ash price and transportation rate. And use average distance of fly ash transportation from the power plant to cement plant to calculate. From the information, the approach to reduce CO2 by this method is without additional investment. Because fly ash is small it can be mixed with clinker before grinding step of the original process. The CO2 abatement cost of this method is equal to -106.16 USD/tonCO2, which is regarded as a worthwhile investment. The factor is the most affect to mitigation cost is transportation rates. The transportation current rate is 0.092 USD/ton/km but if it increases, the abatement cost will also increase accordingly. Moreover we also calculate the maximum distance to decide on the purchase of fly ash from each of power plant.
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