Publisher DOI: 10.1021/acs.iecr.8b04617
Title: Long-Chain Alcohol-Modified Micellar Systems and Their Application in a Continuous Extraction Process
Language: English
Authors: Fellechner, Oliver 
Rotzolk, Sebastian 
Smirnova, Irina 
Issue Date: 20-Feb-2019
Source: Industrial and Engineering Chemistry Research 7 (58): 2575-2582 (2019-02-20)
Journal or Series Name: Industrial & engineering chemistry research 
Abstract (english): The integration of an in situ extraction into biocatalytic processes is often limited by the toxicity of organic solvents. Therefore, it is desirable to use water-based extraction systems (for example, aqueous micellar two-phase systems). They can be used, for instance, for the extraction of valuable products from microalgae cultures. Recently, the nonionic surfactant ROKAnolNL5 was identified as a suitable surfactant for this purpose, since it forms an upper micellar phase, enabling an easy separation of whole-cell biocatalysts. However, its application at temperatures below 45 °C is limited by unstable phase boundaries, whereas the maximal temperature to ensure the vitality of the most microalgae cultures is 40 °C. To overcome this problem, the addition of long-chain alcohols to the surfactant-water mixture during extraction is suggested in this work. Using 1-hexanol, a continuous extraction process with the model solute trans-cinnamic acid at 40 °C in a stirred column could be realized. The results of a new suggested water/ROKAnolNL5/1-hexanol system at 40 °C (extraction yield, Y cont = 97.67% ± 0.14%; enrichment factor, log 10 T CA = 2.42 ± 0.03; number of theoretical stages, N theo = 4.45 ± 0.16) are comparable to those of the water/ROKAnolNL5 system at 45 °C (Y cont = 99.26% ± 0.24%, log 10 T CA = 2.60 ± 0.10, N theo = 5.88 ± 0.67), ensuring, however, no damage of microalgae. Copyright © 2019 American Chemical Society.
ISSN: 0888-5885
Institute: Thermische Verfahrenstechnik V-8 
Type: (wissenschaftlicher) Artikel
Funded by: Funding The authors appreciate the financial support of DFG (Project No. SM 82/14-1). Notes The authors declare no competing financial interest.
Appears in Collections:Publications without fulltext

Show full item record

Page view(s)

Last Week
Last month
checked on Sep 27, 2020

Google ScholarTM


Add Files to Item

Note about this record


Items in TORE are protected by copyright, with all rights reserved, unless otherwise indicated.