A review on the hydrothermal processing of microalgal biomass to bio-oil - Knowledge gaps and recent advances
A review on the hydrothermal processing of microalgal biomass to bio-oil - Knowledge gaps and recent advances
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DOI：
10.1016/j.jclepro.2019.01.129
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发表时间：
2019-04
影响因子：
11.1
通讯作者：
T. Mathimani;N. Mallick
中科院分区：
文献类型：
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作者：
T. Mathimani;N. Mallick
本文介绍了水热气化、水热碳化和水热液化等水热处理技术。此外，从生物原油的产量和质量、其他产品的产量、水相的营养物质、能源消耗和整体经济性等方面比较了每种水热技术的优缺点。本文在查阅大量研究和综述文献的基础上，确定热液液化是生产微藻生物原油的理想工艺，并对近年来不同种类微藻的热液液化研究工作进行了总结和讨论。对反应温度、停留时间、压力、催化剂用量、原料选择及其负荷等因素对水热液化效率的影响进行了评价和描述。关于生物油升级的单独章节提供了各种选择，以生产具有更高热值、低氮和低氧杂原子的最大生物原油。这篇综述的主要贡献在于，本文列举的有关热液液化过程的信息和范围将有助于推动微藻热液液化系统标准化的前景研究。
This state of the art review had presented hydrothermal processing techniques such as hydrothermal gasification, hydrothermal carbonization, and hydrothermal liquefaction. Further, pros and cons of each hydrothermal technique were compared concerning the yield and quality of bio-crude, other products yield, nutrients of an aqueous phase, energy consumption and overall economics. Based on the numerous research and review articles survey, this critical review article had ascertained hydrothermal liquefaction as an ideal technique for microalgal bio-crude production and thus, recent research works undertaken on the hydrothermal liquefaction of different microalgal species has been summarized and discussed. This article has evaluated and described the impact of various factors such as reaction temperature, residence time, pressure, catalyst dose, feedstock selection and its load on the hydrothermal liquefaction efficiency. A separate section dealing with upgrading of bio-oil delivers options to produce maximal bio-crude with higher heating value, low nitrogen, and oxygen heteroatoms. The key contribution of this review is information and scope itemized in this manuscript on hydrothermal liquefaction process can be useful in propelling the prospect research to standardize an intact and efficient hydrothermal liquefaction system for microalgae.