Hydrogen‐dependent carbon–cost boundaries in catalytic hydropyrolysis of cellulose‐rich textile waste to aromatics

IF 4.4 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2026-09-19 DOI:10.1002/aic.70670

Xi Lin, Dongxian Li, Bingqing Shi, Shule Wang, Yanghao Jin, Jihuai Tan, Jia Wang, Jianchun Jiang, Arthur Ragauskas

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引用次数: 0

Abstract

Over 90 million tonnes of textile waste are generated annually, yet its blended composition and chemical finishes limit conventional recycling. Here, cellulose‐rich textile waste was converted into aromatic hydrocarbons by ZSM‐5‐catalyzed hydropyrolysis, which promoted deoxygenation and aromatization of textile‐derived vapors. Across four real textile wastes, the process delivered aromatic hydrocarbon yields of 41.0%–56.0% with selectivity above 95%. A coupled LCA and TEA, built on an Aspen Plus process model, gave a cradle‐to‐gate GWP of 0.73 kg CO 2 ‐eq kg −1 aromatics with gray hydrogen (37% lower than fossil‐based) and 0.59 kg CO 2 ‐eq kg −1 with green hydrogen. The gray‐hydrogen route gave an MSP of US$0.68 kg −1 , competitive with commercial mixed aromatics. These results show that hydrogen provenance governs the carbon footprint, whereas hydrogen price governs production cost, identifying low‐cost low‐carbon hydrogen as the decisive lever for scalable textile‐waste‐to‐aromatics conversion.

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富纤维素纺织废料催化加氢热解制芳烃的氢依赖碳成本边界

每年产生超过9000万吨的纺织废料，但其混合成分和化学整理限制了传统的回收利用。通过ZSM - 5催化的加氢热解，将富含纤维素的纺织废料转化为芳香烃，促进了纺织衍生蒸汽的脱氧和芳构化。在四种实际纺织废料中，该工艺的芳烃收率为41.0%-56.0%，选择性在95%以上。建立在Aspen Plus过程模型上的耦合LCA和TEA得出了灰色氢和绿色氢的GWP分别为0.73 kg CO 2‐eq kg−1和0.59 kg CO 2‐eq kg−1。灰氢路线的MSP为0.68 kg - 1，与商业混合芳烃具有竞争力。这些结果表明，氢的来源决定了碳足迹，而氢的价格决定了生产成本，确定了低成本的低碳氢作为可扩展的纺织废物到芳烃转化的决定性杠杆。

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.