Oleaginous yeast, Rhodotorula paludigena CM33, platform for bio-oil and biochar productions via fast pyrolysis.

Biotechnology for Biofuels and Bioproducts Pub Date : 2023-02-05 DOI:10.1186/s13068-023-02270-x

Pongsatorn Poopisut, Pasama Boonyanan, Pailin Boontawan, Ekarong Sukjit, Nuttapan Promsampao, Nuwong Chollacoop, Mariena Ketudat-Cairns, Adisak Pattiya, Apichat Boontawan

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Abstract

An oleaginous yeast Rhodotorula paludigena CM33 was pyrolyzed for the first time to produce bio-oil and biochar applying a bench-scale reactor. The strain possessed a high lipid content with the main fatty acids similar to vegetable oils. Prior to pyrolysis, the yeast was dehydrated using a spray dryer. Pyrolysis temperatures in the range of 400-600 °C were explored in order to obtain the optimal condition for bio-oil and biochar production. The result showed that a maximum bio-oil yield of 60% was achieved at 550 °C. Simulated distillation gas chromatography showed that the bio-oil contained 2.6% heavy naphtha, 20.7% kerosene, 24.3% biodiesel, and 52.4% fuel oil. Moreover, a short path distillation technique was attempted in order to further purify the bio-oil. The biochar was also characterized for its properties. The consequence of this work could pave a way for the sustainable production of solid and liquid biofuel products from the oleaginous yeast.

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油脂酵母--Rhodotorula paludigena CM33--通过快速热解生产生物油和生物炭的平台。

首次使用台式反应器对含油酵母 Rhodotorula paludigena CM33 进行热解，以生产生物油和生物炭。该菌株的脂质含量很高，主要脂肪酸与植物油相似。在热解之前，使用喷雾干燥器对酵母进行脱水处理。为了获得生产生物油和生物炭的最佳条件，对 400-600 °C 范围内的热解温度进行了探索。结果表明，550 ℃ 时生物油产量最高，达到 60%。模拟蒸馏气相色谱显示，生物油中含有 2.6% 的重石脑油、20.7% 的煤油、24.3% 的生物柴油和 52.4% 的燃料油。此外，为了进一步提纯生物油，还尝试了短程蒸馏技术。还对生物炭的特性进行了鉴定。这项工作的成果可为利用含油酵母可持续生产固体和液体生物燃料产品铺平道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Biotechnology for Biofuels and Bioproducts

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