Optimization of process parameters for the preparation of CaO/CaSO{sub 4}/coal fly ash sorbent for sulfur dioxide (SO{sub 2}) removal: Part II
Journal Article
·
· Energy Sources, Part A: Recovery Utilisation and Environmental Effects
- University of Sains Malaysia, Perai (Malaysia). School for Chemical Engineering
A two-step optimization strategy was employed to optimize the surface area of sorbent prepared from coal fly ash, calcium oxide (CaO) and calcium sulfate (CaSO{sub 4}) for flue gas desulfurization. In the first step, a 3 level full factorial design of experiment was used to develop a regression model equation to correlate the significant experimental sorbent preparation variables to the surface area of the resulting sorbent. The three experimental sorbent preparation variables studied are hydration period (x{sub 1}), ratio of CaO to fly ash (x{sub 2}) and amount of CaSO{sub 4} (x{sub 3}). In the subsequent step, response surface methodology was used to identify the experimental sorbent preparation variables that maximize the surface area of the sorbent. Through this two-step optimization strategy, it was found that at a hydration period of 10 hrs and drying temperature of 100{sup o}C, optimum surface area of 67.0 m{sup 2}/g could be attained by using 5 grams of CaO, 13.7 grams of fly ash, and 7.4 grams of CaSO{sub 4} in the preparation mixture. The prediction was verified with experimental runs.
- OSTI ID:
- 20790779
- Journal Information:
- Energy Sources, Part A: Recovery Utilisation and Environmental Effects, Journal Name: Energy Sources, Part A: Recovery Utilisation and Environmental Effects Journal Issue: 13 Vol. 28; ISSN 1556-7036
- Country of Publication:
- United States
- Language:
- English
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