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首页> 外文期刊>Energy Conversion & Management >One-step conversion of microalgae to alcohols and esters through co- pyrolysis with biodiesel-derived glycerol
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One-step conversion of microalgae to alcohols and esters through co- pyrolysis with biodiesel-derived glycerol

机译：通过使用生物柴油衍生的甘油的共热分解微藻对醇和酯的一步转化

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摘要

Nowadays, efficient conversion of wastes and biomass has attracted increasing attention in the context of waste recycling and energy production. The present study aimed to enhance the production of combustible oxygenated organics (alcohols and esters) in the bio-oil through co-pyrolysis of Chlorella vulgaris and biodiesel-derived glycerol (WG). WG showed significant higher volatiles and moisture contents (91.6% and 8.4%, respectively) than those of C. vulgaris (71.8% and 7.0%, respectively). In addition, C. vulgaris showed 14.6% ash content and 6.5% fixed carbon, which were not recorded in WG. TG analysis confirmed that increase of C. vulgaris blend ratio enhanced the solid residues, while WG reduced the solid residues and enhanced the thermal decomposition rate at early stages of the reaction. Pyrolysis of C. vulgaris individually resulted in 56.9% bio-oil yield, while 50% and 70% WG blends increased the bio-oil yield to 58.5% and 65.2%, respectively. Due to blending with WG, both bio-oil and pyrolytic gas yields increased in favor of bio-char, which reduced significantly from 24.0% from pyrolysis of pure C. vulgaris to 17.4% using 50% WG blend ratio. FTIR analysis confirmed a synergistic effect of WG and C. vulgaris during pyrolysis which resulted in significant impact on the functional groups of the bio-oil. GC MS analysis of the produced bio-oil confirmed the enhancement of alcohols and esters from 1.41% and 0.0% in the bio-oil of C. vulgaris to 53.1% and 28.7%, respectively, in the bio-oil of WG. However, 50% WG blend ratio showed the maximum alcohol content of 71.8%. In addition, 50% blend ratio of WG reduced the nitrogen-containing compounds by 82.2% below that of C. vulgaris individually, while acids were completely disappeared. In conclusion, co-pyrolysis of C. vulgaris and WG could be a potential approach for stable and combustible oxygenated organics.
机译：如今，废物和生物质的有效转换在废物回收和能量生产的背景下引起了越来越长的关注。本研究旨在通过Chlarella寻常和生物柴油衍生的甘油（WG）的共热分解增强生物油中可燃含氧有机物（醇和酯）的生产。 WG呈显着挥发性和水分含量显着较高（分别为91.6％，分别为8.4％），分别为C.Vulgaris（分别为71.8％和7.0％）。此外，C.Vulgaris显示14.6％的灰分含量和6.5％固定碳，其未记录在WG中。 TG分析证实，v语言混合比的增加增强了固体残余物，而WG降低了固体残余物，并在反应的早期阶段增强了热分解速率。 C.Vulgaris的热解单独导致56.9％的生物油产率，而50％和70％的WG共混物分别将生物油产率增加到58.5％和65.2％。由于与WG混合，生物油和热解气体产量增加了生物炭，其从纯C. vulrgaris的热解至17.4％使用50％wg混合物比例显着降低了24.0％。 FTIR分析证实了在热解期间WG和C.寻常型的协同作用，导致生物油的官能团的显着影响。 GC MS分析生产的生物油证实，在WG的生物油中，C. vulgaris的生物油中的1.41％和0.0％的醇和酯的增强分别为53.1％和28.7％。然而，50％的Wg混合比显示最高酒精含量为71.8％。此外，WG的50％的混合比将含氮化合物的混合物减少82.2％以下，单独的C. vulgaris的含量低82.2％，而酸完全消失。总之，C.Vulgaris和WG的共热分解可能是稳定和可燃含氧有机物的潜在方法。

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