Chemical Engineering, Arizona State University, Tempe, AZ 85287-6106, USA.
Bioresour Technol. 2010 Apr;101(8):2762-9. doi: 10.1016/j.biortech.2009.12.003. Epub 2009 Dec 30.
The application of hydrophobic polymeric resins as solid-phase adsorbent materials for the recovery and purification of prospective second generation biofuel compounds, including ethanol, iso-propanol, n-propanol, iso-butanol, n-butanol, 2-methyl-1-butanol, 3-methyl-1-butanol, and n-pentanol, has been investigated. A simple, yet robust correlation has been proposed to model the relative equilibrium partitioning behavior of a series of branched and n-alcohols as a function of their relative hydrophobicity, and has been applied to ultimately predict their adsorption potential. The proposed model adequately predicts the adsorption behavior of the entire series of alcohols studied, as well as with six different adsorbent phases composed of three different polymer matrices. Those resins with a non-polar monomeric structure and high specific surface area provided the highest overall adsorption of each of the studied compounds. Meanwhile, longer chain alcohols were subject to greater adsorption due to their increasingly hydrophobic nature. Among the tested series of alcohols, five-carbon isomers displayed the greatest potential for economical recovery in future, multiphase bioprocess designs. The present study provides the first demonstration of the ability of hydrophobic polymer resins to serve as effective in situ product recovery (ISPR) devices for the production of second generation biofuels.
已研究了疏水性聚合树脂作为固相吸附材料在回收和纯化预期第二代生物燃料化合物（包括乙醇、异丙醇、正丙醇、异丁醇、正丁醇、2-甲基-1-丁醇、3-甲基-1-丁醇和正戊醇）中的应用。已经提出了一种简单而强大的相关性来模拟一系列支链和正醇的相对平衡分配行为，作为其相对疏水性的函数，并最终应用于预测它们的吸附潜力。所提出的模型充分预测了整个系列醇的吸附行为，以及由三种不同聚合物基质组成的六种不同吸附剂相。具有非极性单体结构和高比表面积的树脂对所研究的每种化合物的总吸附量最高。同时，由于其疏水性逐渐增强，长链醇受到更大的吸附。在所测试的醇系列中，五碳异构体在未来多相生物工艺设计中具有经济回收的最大潜力。本研究首次证明了疏水性聚合物树脂作为第二代生物燃料生产中有效原位产物回收（ISPR）装置的能力。
