Developing green processes in the chemistry and engineering domains is one of the most significant challenges for sustainable production. Sugarcane trash (ST) generated during the sugar extraction process is an excellent feedstock for the production of cellulose nanofibers (CNF). Four distinct routes for CNF production from ST has been designed. The OTH procedure included an Organosolv pretreatment, TEMPO oxidation, and High-pressure homogenization; the OLH procedure included an Organosolv pretreatment followed by Lime juice hydrolysis. Alkaline pretreatment, TEMPO oxidation and High-pressure homogenization comprised the ATH. The ALH consisted of Alkaline pretreatment, lime juice hydrolysis, and High-pressure homogenization. The characterization of the CNF samples revealed excellent purity and crystallinity. Fourier transform infrared spectroscopy (FTIR) was used to characterize the synthesized CNF. X-ray diffractograms (XRD) showed a crystallinity value of 64.28 %, 69.52 %, 60.54 %, and 68.81 % for OTH, OLH, ATH, and ALH, respectively. The OTH route produced the highest yield of cellulose (0.98 g/g ST) while the OTH and OLH routes produced high yields of CNF (0.34 g/g ST). Environmental parameters associated with the processes used to obtain CNF from ST were evaluated to achieve sustainable production and asses the environmental impact, including EcoScale (ES) and Life Cycle Analyses (LCA). EcoScale analysis assigned the OTH method a score of 84 and OLH, ALH, and ATH methods 74, 67, and 74, respectively. The life cycle assessment results indicated that the ATH method had a relatively low environmental impact across all impact categories. Finally, comparing CNF value to other carbon nanomaterials, the CNF derived from biomass was found to have a low environmental impact.

在化学和工程领域开发绿色工艺是可持续生产面临的最重大挑战之一。糖提取过程中产生的甘蔗渣 (ST) 是生产纤维素纳米纤维 (CNF) 的绝佳原料。已经设计了四种不同的 ST 生产 CNF 路线。OTH 程序包括有机溶剂预处理、TEMPO 氧化和高压均质化；OLH 程序包括有机溶剂预处理，然后是酸橙汁水解。碱性预处理、TEMPO 氧化和高压均质包括 ATH。ALH 包括碱性预处理、酸橙汁水解和高压均质。CNF 样品的表征显示出优异的纯度和结晶度。傅里叶变换红外光谱 (FTIR) 用于表征合成的 CNF。X 射线衍射图 (XRD) 显示 OTH、OLH、ATH 和 ALH 的结晶度值分别为 64.28%、69.52%、60.54% 和 68.81%。OTH 路线生产的纤维素产量最高（0.98 g/g ST），而 OTH 和 OLH 路线生产的 CNF 产量最高（0.34 g/g ST）。与用于从 ST 获取 CNF 的过程相关的环境参数进行了评估，以实现可持续生产并评估环境影响，包括生态规模 (ES) 和生命周期分析 (LCA)。EcoScale 分析给 OTH 方法分配了 84 分，OLH、ALH 和 ATH 方法分别为 74、67 和 74。生命周期评估结果表明，ATH 方法在所有影响类别中的环境影响相对较低。最后，