Piedrahita-Rodríguez Sara, Baumberger Stéphanie, Cézard Laurent, Poveda-Giraldo Jhonny Alejandro, Alzate-Ramírez Andrés Felipe, Cardona Alzate Carlos Ariel
Institute of Biotechnology and Agribusiness, Chemical Engineering Department, National University of Colombia, Manizales 170003, Colombia.
Institut Jean-Pierre Bourgin (IJPB), INRAE, AgroParisTech, University Paris-Saclay, 78000 Versailles, France.
Materials (Basel). 2023 Aug 7;16(15):5502. doi: 10.3390/ma16155502.
Lignocellulosic materials are usually processed toward C5 and C6 corresponding sugars. Trifluoroacetic acid (TFA) is a pretreatment method to solubilize hemicellulose to sugars such xylose without degrading cellulose. However, this pretreatment has not been compared to other processes. Thus, this paper focuses on the techno-economic comparison of the C5-C6 production of C5-C6 as raw materials platforms using non-centrifuged sugarcane bagasse (NCSB) and wood chips (PP). Hydrolysates using TFA 2.5 M as an acid were characterized through HPLC regarding arabinose, galactose glucose, xylose, and mannose sugars. Then, simulations of the processes according to the experimental results were done. The economic assessment was performed, and compared with some common pretreatments. The mass and energy balances of the simulations indicate that the process can be compared with other pretreatments. From the economic perspective, the main operating expenditures (OpEx) are related to raw materials and capital depreciation due to the cost of TFA corrosion issues. The processes showed a CapEx and OpEx of 0.99 MUSD and 6.59 M-USD/year for NCSB, and 0.97 MUSD and 4.37 MUSD/year for PP, considering a small-scale base (1 ton/h). TFA pretreatment is innovative and promising from a techno-economic perspective.
木质纤维素材料通常被加工成相应的C5和C6糖类。三氟乙酸（TFA）是一种预处理方法，可将半纤维素溶解为木糖等糖类，而不降解纤维素。然而，这种预处理方法尚未与其他工艺进行比较。因此，本文重点对以未离心甘蔗渣（NCSB）和木屑（PP）为原料平台生产C5 - C6的工艺进行技术经济比较。使用2.5 M TFA作为酸的水解产物通过高效液相色谱法对阿拉伯糖、半乳糖、葡萄糖、木糖和甘露糖进行了表征。然后，根据实验结果对工艺进行了模拟。进行了经济评估，并与一些常见的预处理方法进行了比较。模拟的质量和能量平衡表明，该工艺可与其他预处理方法相比较。从经济角度来看，由于TFA腐蚀问题导致的成本，主要运营支出（OpEx）与原材料和资本折旧有关。考虑到小规模基准（1吨/小时），NCSB工艺的资本支出（CapEx）和运营支出分别为0.99百万美元和659万美元/年，PP工艺的资本支出和运营支出分别为0.97百万美元和437万美元/年。从技术经济角度来看，TFA预处理具有创新性和前景。
