Kinetic Study of Aluminum – Alginate Catalyzed Esterification of Lactic Acid with 1-Butanol

https://doi.org/10.22146/ajche.49562

Kanungnit Chawong(1), Chitkamon Poncharee(2), Boonpradab Daengpradab(3), Panarat Rattanaphanee(4*)

(1) School of Chemical Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
(2) School of Chemical Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
(3) School of Chemical Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
(4) School of Chemical Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
(*) Corresponding Author

Abstract


Aluminum-alginate catalyst prepared from aluminum chloride and inexpensive biopolymer sodium alginate is used in lactic acid esterification with 1-butanol. Effect of initial reactant molar ratio, catalyst loading and reaction temperature on the acid conversion is investigated. Maximum conversion of about 81.2% was achieved after 6 h of reaction at 85°C with initial 1-butanol-to-lactic-acid molar ratio of 5 and catalyst loading of 1%w/v. Experimental kinetic data are correlated by pseudo-homogeneous model using UNIFAC to describe non-ideality of the reaction components. Satisfactory agreement between the experimental and calculated data is achieved. The specific rate and equilibrium constant for this reaction are reported.

Keywords


Esterification, 1-Butanol, Lactic acid, Sodium alginate, Butyl lactate

Full Text:

PDF


References

  1. Chawong, K., Rayabsri, C., and Rattanaphanee, P. (2015). Extraction of lactic acid in mixed solvent electrolyte system containing water, 1-butanol and ammonium sulfate, Int. J. Chem. React. Eng., 13(2): 183.
  2. Hassan, S. Z., and Vinjamur, M. (2013). Analysis of sensitivity of equilibrium constant to reaction conditions for esterification of fatty Acids with alcohols, Ind. Eng. Chem. Res., 52 (3), 1205.
  3. Qiuyun, Z., Li, H., Wenting, Q., Xiaofang, L., Yuping, Z., Wei, X., and Song, Y. (2013). Solid acid used as highly efficient catalyst for esterification of free fatty acids with alcohols, China Pet. Process Pe., 15(1), 19.
  4. Su, C., Yu, C., Chien, I., Ward, J. D. (2013). Plant-wide economic comparison of lactic acid recovery processes by reactive distillation with different alcohols, Ind. Eng. Chem. Res., 52 (32), 11070.



DOI: https://doi.org/10.22146/ajche.49562

Article Metrics

Abstract views : 1358 | views : 1063

Refbacks

  • There are currently no refbacks.


ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.