Kwangsuk Yoon , Taewoo Lee , Hoyeon Cha , Joohyung Lee , Jegeon Lee , Hocheol Song
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引用次数: 0
Abstract
Despite the growing interest in biomass as a carbon–neutral resource, technical challenges have limited its comprehensive utilization. Pyrolysis has emerged as a promising method for reducing the carbon footprint by more effectively valorizing carbon in biomass. This study investigated the use of carbon dioxide (CO2) in the pyrolysis of pine cone (PC), a lignocellulosic biomass. Thermogravimetric analysis confirmed that lignin was the primary component of the PC. Characterization and quantification of the three pyrolytic products (syngas, biocrude, and biochar) revealed that CO2 enhanced CO production and the surface area of the biochar, thereby improving its CO2 adsorption capacity. Additional heat and a Ni catalyst further amplified CO2′s functionality. The sustainability of the proposed pyrolysis system was evaluated by calculating energy requirements of the pyrolysis processes and the net CO2 emissions. Catalytic pyrolysis under CO2 was the most effective, achieving a reduction of 3.34 g of CO2 per gram of PC.
尽管人们对生物质这种碳中和资源的兴趣与日俱增,但技术上的挑战限制了生物质的综合利用。通过更有效地利用生物质中的碳,热解已成为减少碳足迹的一种有前途的方法。本研究调查了二氧化碳(CO2)在木质纤维素生物质松果(PC)热解过程中的应用。热重分析证实木质素是 PC 的主要成分。对三种热解产物(合成气、生物原油和生物炭)进行表征和定量分析后发现,二氧化碳提高了二氧化碳的产生量和生物炭的表面积,从而提高了生物炭对二氧化碳的吸附能力。额外的热量和镍催化剂进一步增强了二氧化碳的功能。通过计算热解过程的能源需求和二氧化碳净排放量,评估了拟议热解系统的可持续性。二氧化碳催化热解最为有效,每克 PC 可减少 3.34 克二氧化碳。
期刊介绍:
Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies.
Topics include:
• Biofuels: liquid and gaseous biofuels production, modeling and economics
• Bioprocesses and bioproducts: biocatalysis and fermentations
• Biomass and feedstocks utilization: bioconversion of agro-industrial residues
• Environmental protection: biological waste treatment
• Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.