Korean Journal of Chemical Engineering

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of operating parameters on precipitation for recovery of lactic acid from calcium lactate fermentation broth

  • Min, Da-Jeong (Department of Chemical Engineering, Kongju National University) ;
  • Choi, Kook Hwa (Department of Chemical Engineering, Kongju National University) ;
  • Chang, Yong Keun (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Jin-Hyun (Department of Chemical Engineering, Kongju National University)
  • Received : 2011.01.24
  • Accepted : 2011.03.29
  • Published : 2011.10.01
⟨ Previous Next ⟩

Abstract

Precipitation is a simple, efficient method for separating and recovering lactic acid in the form of calcium lactate from fermentation broth by adding sulfuric acid. Major operating parameters of the recovery step as well as the temperature of concentration of the recovered lactic acid solution and the type and amount of adsorbent used for pigment (color) removal were optimized. When the molar ratio of calcium lactate to sulfuric acid was 1 : 1 and the pH was increased to a value greater than the pKa (3.86), calcium sulfate was precipitated and could be removed more effectively, allowing for more efficient separation and recovery of supernatant lactic acid. Precipitation could be facilitated by adding calcium lactate solution with mixing (up to 220 rpm) and was completed in over 18 h. The optimal temperature for the concentration of lactic acid recovered from the supernatant after removing the precipitated calcium sulfate was found to be $90^{\circ}C$ in terms of the time required for concentration and the stability of the product. Activated carbon (SX-PLUS, 9 g/L) was most effective as an adsorbent for color removal from the recovered lactic acid. Under the optimized precipitation conditions, an overall yield of 92% of lactic acid from fermentation broth could be achieved.

Keywords

Acknowledgement

Supported by : Korean Ministry of Knowledge Economy (MKE)

Cited by

  1. Simulation of a new regeneration process of solvents with ionic liquid by short-path distillation vol.97, pp.None, 2011, https://doi.org/10.1016/j.seppur.2012.03.010
  2. Chemical Conversion of Sugars to Lactic Acid by Alkaline Hydrothermal Processes vol.6, pp.6, 2011, https://doi.org/10.1002/cssc.201300092
  3. Batch and dynamic study of lactic acid extraction using emulsion liquid membrane vol.6, pp.4, 2011, https://doi.org/10.12989/mwt.2015.6.4.277
  4. Recovery Processes of Organic Acids from Fermentation Broths in the Biomass-Based Industry vol.26, pp.1, 2016, https://doi.org/10.4014/jmb.1505.05049
  5. Separation of lactic acid and recovery of salt‐ions from fermentation broth vol.92, pp.3, 2017, https://doi.org/10.1002/jctb.5023
  6. Purification of Lactic Acid Produced by Fermentation: Focus on Non-traditional Distillation Processes vol.46, pp.3, 2011, https://doi.org/10.1080/15422119.2016.1260034
  7. Convenient Product Distribution for a Lignocellulosic Biorefinery: Optimization through Sustainable Indexes vol.56, pp.40, 2011, https://doi.org/10.1021/acs.iecr.7b02101
  8. Convenient Product Distribution for a Lignocellulosic Biorefinery: Optimization through Sustainable Indexes vol.56, pp.40, 2011, https://doi.org/10.1021/acs.iecr.7b02101
  9. Application of Thermodynamic-Topological Analysis in the Design of Biorefineries: Development of a Design Strategy vol.53, pp.2, 2011, https://doi.org/10.1134/s0040579519020155
  10. Electro-membrane processes for organic acid recovery vol.9, pp.14, 2011, https://doi.org/10.1039/c8ra09227c
  11. Recent Advances on Purification of Lactic Acid vol.20, pp.11, 2011, https://doi.org/10.1002/tcr.202000055
  12. Reactive Extraction as an Intensifying Approach for the Recovery of Organic Acids from Aqueous Solution: A Comprehensive Review on Experimental and Theoretical Studies vol.66, pp.4, 2011, https://doi.org/10.1021/acs.jced.0c00405
  13. Influence of products portfolio and process contextualization on the economic performance of small- and large-scale avocado biorefineries vol.342, pp.None, 2011, https://doi.org/10.1016/j.biortech.2021.126060