The sugarcane industry generates significant amounts of waste, such as bagasse (SCB) and sugarcane straw (SCS), which can be reused as raw materials to produce a wide range of renewable chemicals. This study, employing an approach that integrates kinetic studies and comprehensive product characterization, assessed the potential of pyrolysis to convert SCB and SCS into high-value-added inputs. Kinetic analysis revealed average activation energies (Ea) of ∼139 kJ mol−1 and ∼166 kJ mol−1 for SCB and SCS pyrolysis, respectively. Thermodynamic analysis, with ΔH values close to those of Ea, indicates low potential energy barriers and high viability of pyrolysis to recover bioenergy from the studied biomasses, as shown by ΔG values > 170 kJ mol−1. SCB and SCS pyrolysis mainly produced pyrolytic liquids (58–63 wt%), with monomers, dimers, and trimers derived from lignin and holocellulose as main constituents. GC/MS analysis of the bio-oil revealed the predominance of phenolic compounds and sugar derivatives. These findings indicate that SCB and SCS generate pyrolytic liquids with similar compositions, suggesting potential as renewable industrial chemicals. This study highlights the possibility of expanding the sugarcane industry’s product portfolio through sustainable management of these wastes.

中文翻译：

---

甘蔗生物精炼：释放热解过程的潜力，将废弃生物质转化为增值产品


甘蔗工业产生大量废物，例如甘蔗渣 (SCB) 和甘蔗秸秆 (SCS)，这些废物可以重新用作原材料来生产各种可再生化学品。本研究采用结合动力学研究和全面产品表征的方法，评估了热解将 SCB 和 SCS 转化为高附加值投入的潜力。动力学分析显示 SCB 和 SCS 热解的平均活化能 (Ea) 分别为~139 kJ mol−1 和~166 kJ mol−1。热力学分析表明，ΔH 值接近 Ea，表明势能垒较低，热解从所研究的生物质中回收生物能的可行性较高，如 ΔG 值 > 170 kJ mol−1 所示。 SCB和SCS热解主要产生热解液(58-63wt%)，以木质素和全纤维素衍生的单体、二聚体和三聚体为主要成分。生物油的 GC/MS 分析揭示了酚类化合物和糖衍生物的主要成分。这些发现表明，SCB 和 SCS 生成成分相似的热解液体，表明其具有作为可再生工业化学品的潜力。这项研究强调了通过对这些废物进行可持续管理来扩大甘蔗行业产品组合的可能性。