This study aimed to develop a green and efficient strategy for the recovery of bioactive phenolics from agro-industrial by-products (AIBPs) derived from Chaenomelis Fructus (CF). The peel of Chaenomelis Fructus (CFP) has a higher phenolic content compared to its leaves and seeds. The ultrasound-assisted extraction process for CFP total phenolics (CFPTP) was optimized using response surface methodology, achieving a yield of 216.27 ± 1.04 mg/g. ADS-17 resin exhibited higher adsorption-desorption capacity for CFPTP and was selected as the optimal resin. Studies on adsorption behavior confirmed adherence to pseudo-second order and Langmuir models, characterized by exothermicity, spontaneity, and entropy reduction. A chromatography enrichment process employing ADS-17 resin yielded a CFPTP-rich extract with a purity of 84.22 ± 1.57 %. Additionally, a UPLC-QqQ-MS/MS method was developed to simultaneously measure eight main phenolic compounds in CFPTP extracts. This study contributes to the transformation of CF AIBPs into valuable products rich in phenolics.
HaiyanYang,Xinzhong Wang,Jun Liu,Wanzhen Liu,Yue Gong,Yankun Sun
Solid amine materials are promising adsorbents for CO 2 capture from biogas , flue gas and other similar gas mixture. Here, tetraethylenepentamine (TEPA)-impregnated porous polymeric resin (ADS-17) with very high CO 2 adsorption capacity was successfully prepared. Its CO 2 separation performance from simulated biogas was investigated by breakthrough experiments. And the influence of parameters such as TEPA loading, adsorption temperature and flow rate on the adsorption behaviours were studied in detail. The optimal TEPA loading was 40 wt% (ADS-17–40%TEPA) and the CO 2 adsorption capacity of this adsorbent reached the optimal value (ca. 264.2 mg▪g −1 ) at the flow rate of 200 mL▪min −1 . The CO 2 adsorption capacity of ADS-17–40%TEPA had no pronounced change from 25 °C to 70 °C, but it decreased obviously when the adsorbent was heated to 90 °C. At 100 °C, the adsorption capacity became negligible. According to detailed characterization, it was inferred that the pores of ADS-17–40%TEPA in the range of 13–115 nm were probably responsible for CO 2 diffusion. In addition, ADS-17–40%TEPA possessed good reversibility and the CO 2 adsorption capacity was nearly stable after two adsorption–desorption cycles. ADS-17–40%TEPA with high and fast CO 2 adsorption exhibits a very promising application in CO 2 separation from biogas.
危险品化学品经营许可证（带存储）