Abstract
A concept is presented to determine the osmotic pressure of amino acid solutions by altering the stoichiometric coefficient of the van’t Hoff law corresponding to the dissociation state of the amino acids. The osmotic pressure is greatly affected by the feed pH, which significance has been overseen in membrane permeation studies. Nanofiltration experiments were carried out in order to investigate the effect of osmotic pressure on the permeation of amino acids through polymeric membrane. l-Alanine aqueous solutions of various feed pH (6.0, 9.7 and 11.1) were concentrated in discontinuous operation mode with complete retentate recycle. It has been stated by many authors, that polymeric nanofiltration membranes possess higher rejection for amino acids in negatively charged form than for zwitterions. In our study we demonstrate that this tendency can be reversed in higher concentration range.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
