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Quantitative characterization of the aqueous fraction from hydrothermal liquefaction of algae

机译:藻类水热液化对水馏分的定量表征

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摘要

The aqueous fraction generated from hydrothermal liquefaction (HTL) of algae contains approximately 20 -35% of the total carbon present in the algal feed. Hence, this aqueous fraction can be utilized to produce liquid fuels and/or specialty chemicals for economic sustainability of HTL on an industrial scale. In this study, aqueous fractions produced from HTL of freshwater and saline-water algal cultures were analyzed using a wide variety of analytical instruments to determine their compositional characteristics. Organic chemical compounds present in eight aqueous fractions were identified using two-dimensional gas chromatography equipped with time-of-flight mass spectrometry. Identified compounds include organic acids, nitrogen compounds and aldehydes/ketones. Conventional gas chromatography and liquid chromatography methods were utilized to quantify the identified compounds. Inorganic species in the aqueous stream from HTL of algae also were quantified using ion chromatography and inductively coupled plasma optical emission spectroscopy. The concentrations of organic chemical compounds and inorganic species are reported. The amount quantified carbon ranged from 45 to 72% of the total carbon in the aqueous fractions.
机译:由藻类的水热液化(HTL)产生的含水部分包含藻类进料中存在的总碳的约20 -35%。因此,该含水级分可用于生产液体燃料和/或特种化学品,以实现工业规模上HTL的经济可持续性。在这项研究中,使用各种分析仪器分析了淡水和盐水藻类培养液的HTL产生的水相馏分,以确定其组成特征。使用配备飞行时间质谱的二维气相色谱法鉴定了八个水相中存在的有机化合物。鉴定出的化合物包括有机酸,氮化合物和醛/酮。利用常规的气相色谱法和液相色谱法对所鉴定的化合物进行定量。还使用离子色谱法和电感耦合等离子体发射光谱法对藻类HTL水流中的无机物进行了定量。报告了有机化合物和无机物的浓度。定量碳的量为水性馏分中总碳的45-72%。

著录项

  • 来源
    《Biomass & bioenergy》 |2016年第10期|122-130|共9页
  • 作者单位

    Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA;

    Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA;

    Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA;

    Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA;

    Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA;

    Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA;

    Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hydrothermal liquefaction; Algae; Biofuels; Thermochemical conversions; Wastewater analysis;

    机译:水热液化;藻类;生物燃料;热化学转化;废水分析;

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