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2007 (ended 31 Mar 2008) from Yen 27,526 M in FY 2006 (ended 31 Mar 2007), while operating income fell to Yen 2812 M from Yen 2982 M. Sales of automotive catalysts went up, reflecting higher sales volume, and an upswing in selling prices accompanying the escalation in precious metal prices. Sales of process catalysts were up due to the high demand for replacements. Sales of De-NOx catalysts, and equipment and catalysts for waste gas treatment were up due to growth in sales volume. Sales of equipment and catalysts for wastewater treatment dropped in an absence of large-sized equipment projects which contributed to the sales performance in the previous year.
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removal of carbon dioxide from flue gas is facilitated via an enzymecatalyzed bicarbonate solution developed by Carbozyme. ExxonMobil is developing silicatebased zeolites as possible membrane separation materials. The advantages of membrane separation over alternative techniques are noted.