MERGERS AND ACQUISITIONS

Ecolab Inc., St. Paul, said it has sold substantially all the capital equipment design and build business of its Mobotec air emissions control business to the Power Industrial Group, a British mechanical engineering business.

DEBT AND EQUITIES

Capella Education Co., Minneapolis, a provider of online post-secondary education through its subsidiary Capella University, said that its board of directors has approved a $50 million increase to its share repurchase program.

C.H. Robinson Worldwide Inc., Eden Prairie, declared a quarterly cash dividend of 35 cents per share, payable Sept. 30 to shareholders of record Sept. 6.

Arctic Cat Inc., Plymouth, declared a regular quarterly cash dividend of 10 cents per share, payable Sept. 13 to shareholders of record on Aug. 30.