Comprehensive pyrolysis investigation of Lemongrass and Tagetes minuta residual biomass: bio-oil composition and biochar physicochemical properties

IF 4.1 4区工程技术 Q3 ENERGY & FUELS Biomass Conversion and Biorefinery Pub Date : 2024-06-06 DOI:10.1007/s13399-024-05764-2

Ramandeep Kaur, Valiveti Tarun Kumar, Bhavya B. Krishna, Thallada Bhaskar

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Abstract

The generation of spent aroma plant/process waste is increasing due to the growth of the essential oil industries due to the demand for essential oils. This study aims to convert such spent aroma plant waste, i.e., spent Lemongrass and Tagetes minuta, into bio-oil and biochar using slow pyrolysis. In this work, pyrolysis is conducted at different temperatures (350–500 ℃) at a heating rate of 10 ℃/min in a nitrogen atmosphere with a 50 mL/min flow rate. The maximum bio-oil yield obtained for Lemongrass was 37.3 wt% with a biochar yield of 31.6 wt% at 400 ℃; however, in the case of Tagetes minuta, the maximum bio-oil yield (39 wt%) was observed at 450 ℃ with 27.3 wt% of biochar yield. GC-MS analysis of bio-oil indicated its phenolic-rich nature along with other functionalities, i.e., carbonyls, furans, N-containing, and other types. Maximum phenolics observed with 60.27 area% for Lemongrass and 62.75 area% for Tagetes minuta at 450 ℃. Finally, to understand the breaking patterns of the biomass framework, flash pyrolysis through the analytical instrument, Py-GC/MS, was carried out at a high heating rate of 20 ℃/ms.

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柠檬草和小万寿菊残留生物质热解综合研究：生物油成分和生物炭理化性质

由于对精油的需求，精油工业的增长，产生的废弃芳香工厂/工艺废物正在增加。本研究旨在利用慢速热解的方法，将香茅和万寿菊等芳香植物废弃物转化为生物油和生物炭。在本实验中，热解在不同温度（350-500℃）下进行，加热速率为10℃/min，在氮气气氛中进行，流速为50 mL/min。在400℃条件下，柠檬草的最大生物油收率为37.3 wt%，生物炭收率为31.6 wt%；然而，在万寿菊中，在450℃下生物油产量最高（39 wt%），生物炭产量为27.3 wt%。GC-MS分析表明，生物油具有丰富的酚类性质，并具有羰基、呋喃、含n等功能。450℃时，柠檬草和万寿菊的最大酚含量分别为60.27和62.75。最后，为了了解生物质骨架的断裂模式，通过Py-GC/MS分析仪器在20℃/ MS的高升温速率下进行了闪蒸热解。图形抽象

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来源期刊

Biomass Conversion and Biorefinery Energy-Renewable Energy, Sustainability and the Environment

CiteScore

7.00

自引率

15.00%

发文量

1358

期刊介绍： Biomass Conversion and Biorefinery presents articles and information on research, development and applications in thermo-chemical conversion; physico-chemical conversion and bio-chemical conversion, including all necessary steps for the provision and preparation of the biomass as well as all possible downstream processing steps for the environmentally sound and economically viable provision of energy and chemical products.