Herein, four kinds of low-cost biochars (i.e. straw, rice husk, peanut shell and sawdust biochar) were used as the catalysts and their influence on the HTL of microalgae was investigated. It indicated that the biochars could improve the bio-oil quality. Particularly, the sawdust biochar increased the higher heating value of the bio-oil from 35.8 MJ/kg (without biochar) to 37.7 MJ/kg. The straw biochar increased the low boiling fraction (< 200 °C) of bio-oil by about 15% compared with that of the bio-oil without catalysts. Overall, the biochar is beneficial for the bio-oil used as transportation fuels in the future.

中文翻译：

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不同生物炭上微藻的催化水热液化

本文以四种低成本的生物炭（秸秆，稻壳，花生壳和锯末生物炭）为催化剂，研究了它们对微藻HTL的影响。表明生物炭可以改善生物油品质。尤其是，锯末生物炭将更高的生物油热值从35.8 MJ / kg（无生物炭）提高到37.7 MJ / kg。与没有催化剂的生物油相比，秸秆生物炭将生物油的低沸点分数（<200°C）提高了约15％。总体而言，生物炭对于将来用作运输燃料的生物油是有益的。