초록
<P>In the present study, a novel micro/mesoporous hyper-cross-linked polymeric adsorbent, SY-01, was tested to remove several inhibitory compounds from butanol fermentation wastewater (BFW) for biobutanol production for the first time. Characterization of the SY-01 resin was determined by scanning electron microscopy, nitrogen adsorption–desorption isotherms, Fourier transform infrared spectroscopy and elemental analysis. The results showed that the SY-01 resin possessed a high Brunauer–Emmett–Teller surface area (1334 m<SUP>2</SUP>/g) with large micropores and mesopores volumes (0.42 and 0.69 mL/g, respectively). After fixed-bed column adsorption, more than 96.0% of <SMALL>d</SMALL>-xylose and 95.0% of <SMALL>d</SMALL>-glucose remained in the treated butanol fermentation wastewater (TBFW). Acetic acid removal varied from 5.1% to 18.7%, butyric acid removal varied from 64.9% to 100% and color removal was effective between 52.9% and 99.2%. In the column desorption process, 99.4% of acetic acid and 99.1% of butyric acid were recovered by an acetone solution. Furthermore, the TBFW was used as substrate for biobutanol production by <I>Clostridium acetobutylicum</I> CH06. The detoxification by the SY-01 resin column increased the maximum acetone–butanol–ethanol concentration by 4.08 times and enhanced the total sugar utilization by 1.95 times. In conclusion, our results suggest a new approach for treating the butanol fermentation wastewater.</P><P>In this work, the possibility of using butanol fermentation wastewater for biobutanol production after removal of inhibitory compounds by micro/mesoporous hyper-cross-linked polymeric adsorbent was evaluated.</P><P><B>Graphic Abstract</B><BR><IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ascecg/2015/ascecg.2015.3.issue-4/acssuschemeng.5b00010/production/images/medium/sc-2015-00010r_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/sc5b00010'>ACS Electronic Supporting Info</A></P>