Abstract:
:Poly([1-vinyl-3-hexylimidazolium] [bis(trifluoromethylsulfonyl)imide]) (poly([VHIM][Tf2N])) was assessed for its ability to adsorb bio-ethanol from Chamaecyparis obtuse leaves fermentation broths. Poly([VHIM][Tf2N]) was prepared by poly([VHIM][Br]) ion exchange with Li(Tf2N). Poly([VHIM][Br]) was obtained using a thermal-initiated polymerization method. The factors affecting the adsorption capacity of poly([VHIM][Tf2N]), such as the initial concentration of bio-ethanol in the fermentation broth, adsorption temperature and dosage of the adsorbent, as well as the adsorption kinetics and equilibrium of poly([VHIM][Tf2N]) were investigated. The Langmuir, Freundlich and Temkin isotherms used to describe the adsorption of bio-ethanol on the adsorbent showed good correlation coefficients of 0.97, 0.96 and 0.98, respectively. A comparison of the separation factors for ethanol/water, ethanol/glucose and ethanol/xylose revealed poly([VHIM][Tf2N]) to have preferential selectivity for bio-ethanol. Compared to activated carbon, poly([VHIM][Tf2N]) exhibited higher adsorption capacity for bio-ethanol under the same adsorption conditions. The adsorbent could be used for 5 cycles with good efficiency, highlighting its reusability as an adsorbent.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Tang B,Bi W,Row KHdoi
10.1016/j.biortech.2013.03.113subject
Has Abstractpub_date
2013-06-01 00:00:00pages
25-32eissn
0960-8524issn
1873-2976pii
S0960-8524(13)00481-1journal_volume
137pub_type
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