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JORMAR — Journal of Raw Materials Research

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Kinetic studies on lime causticization using locally sourced soda ash and hydrated lime

Authors

  • Ameh, A.O. Department of Chemical Engineering, Ahmadu Bello University, Zaria, Nigeria Author
  • Ahmed, A. S. Department of Chemical Engineering, Ahmadu Bello University, Zaria, Nigeria Author
  • Aderemi, B.O. Department of Chemical Engineering, Ahmadu Bello University, Zaria, Nigeria Author

DOI:

https://doi.org/10.83043/1e6sk413

Abstract

Lime causticization was studied to develop the governing rate equation for the reaction. Under heterogeneous reaction conditions, the reaction was found to be limited by mass transfer. With thorough mixing (pseudo-homogeneous reaction) a rate equation was developed at optimized reaction time. The determining of initial rates method gave the order of reaction with respect to lime and soda ash to be 1.4 and 1.2 respectively. The overall rate equation was however found to follow a shift-order model; which indicates product inhibition characteristics of the reaction: 

_ rA = K^CA

          1+KM^CA

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Published

2005-06-16

Issue

Vol. 2 No. 1 (2005): JOURNAL OF RAW MATERIALS RESEARCH

Section

Articles