文档介绍：J ourna l of Scie ntifi c & Indu str i a l R esearc h Vol. 62 , Novem b er 2003, pp 10 94- 10 97 Ferrous-ferric Oxidation in Pickle Liquor Ran ga dhar Na ya k * a nd J Raj ago pal a Ra o Regional R esearch Laboratory (C SIR) , Bhubane swar 75 1 0 1 3 R ece iv e d: 3 1 M arch 2003; accepte d : 04 A u g u s t 2003 Pi ck l e liqu or, a was t e from metallurgical indu s t r i es a nd con t a inin g i ro n(lI ) s ul pha t e in cr ud e f o r m , has b ee n s u bject e d to oxidat i o n st udi es. Oxidation of aqueous iron from F e( ll ) t o Fe(III ) in diff e r e nt a l ka li m ed i a h as bee n inv c s t i gQ t ed in th e p r ese n ce of a numb e r o f addi ti ves utilizin g a tm osp heri c ai r as oxi d a n t. Optimum co n di ti ons for effectiv e oxidation hQ VC been es t ab li s h ed . Keywords : I ro n ( ll ), Iron ( Ill ), A lk a l is, Aer i al oxida ti o n , A dditi ves, Pickle liqu or Introduction Ir o n oxides b e lon g t o an important clas s of materials owing to their multiple a pplication s as p i g m e nt s, catalysts, and ab s orbers of i o n s ' . Recently , t h ese h ave r ece iv e d s pe c ial att e ntion for a ppli ca tion in metal p a intin g, as so urc e m a teri a l s for magn e ti c co mpound s 2 and for absor p tion o