Protein separation from alkaline process water of shrimp waste processing industry using membrane filtration


Authors

  • Le Quynh Thu Nguyen
  • Heiko Lippich
  • Martin Wagner
  • Peter Cornel
  • Robert Lutze
  • Markus Engelhart
DOI: https://doi.org/10.15625/4876

Keywords:

Membrane filtration, protein recovery, alkaline process water

Abstract

The recovery of protein and caustic soda solution from shrimp waste alkaline process water was experimentally investigated by a two-step filtration process with polymer membranes of different molecular weight cut-offs. Experiments for nine combinations of microfiltration/ultrafiltration and nanofiltration membranes were conducted in batch-mode using a stainless steel stirred cell with a membrane area of 38.5 cm². It could be shown that this process concept is capable of separating protein and dissolved organic carbon from the alkaline hydrolysis of shrimp waste. Totally, more than 30 % of protein was fractionated by the first step filtration while the second step reached a higher protein rejection of more than 88 %. The protein concentrate could be reused as animal feeding and the recovered sodium hydroxide solution couldbe recycled to the production process.

Keywords: Membrane filtration, protein recovery, alkaline process water.

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Published

10-09-2014

How to Cite

Thu Nguyen, L. Q., Lippich, H., Wagner, M., Cornel, P., Lutze, R., & Engelhart, M. (2014). Protein separation from alkaline process water of shrimp waste processing industry using membrane filtration. Vietnam Journal of Chemistry, 52(2), 174. https://doi.org/10.15625/4876

Issue

Vol. 52 No. 2 (2014)

Section

Articles