盐生植物生物质生产生物油和生物炭的作用：预处理和温度对大戟柳热解的影响,Sustainable Energy & Fuels

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盐生植物生物质生产生物油和生物炭的作用：预处理和温度对大戟柳热解的影响
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2021-2-26 , DOI: 10.1039/d0se01664k
Alessia Iaccarino _{1,

2,

3,

4,

5} , Ribhu Gautam _{1,

2,

3,

4,

5} , S. Mani Sarathy _{1,

2,

3,

4,

5}

Affiliation

由于其能够在干旱气候和盐水中生长，因此在许多地区，大戟柳（SB）是具有战略意义的植物。这项研究评估了盐生植物生物量预处理对生物油和生物炭生产的影响，方法是通过SB的热解。热解实验是在石英管反应器中于600、700和800°C进行的，以了解温度对从未经处理的SB（USB）和经过预处理的SB（PSB）获得的产品的影响。对USB和PSB样品进行表征，以确定其热稳定性，元素组成，矿物质组成和官能团鉴定。SB的预处理分别减少了71％和45％的灰分和Na含量。除灰有利于热解辅助提取羧酸，在600°C下它们在生物油中的选择性从20.7％（USB）增至33.4％（PSB）。在USB（10.4％）和PSB（13.4％）的生物油中，酚类化合物的选择性在800°C时最高。PSB热解使生物炭的比表面积增加了四倍，而在USB的生物炭中观察到了碳纳米结构。通过提出合理的反应方案，阐明了SB中存在的各种氨基酸，纤维素，半纤维素，脂肪酸和木质素的热解过程中主要化合物的形成途径。

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Bio-oil and biochar production from halophyte biomass: effects of pre-treatment and temperature on Salicornia bigelovii pyrolysis

Salicornia bigelovii (SB) is a strategically important plant in many regions owing to its ability to grow in arid climates and saline water. This study evaluates the effects of halophyte biomass pre-treatment on the production of bio-oil and biochar via pyrolysis of SB. The pyrolysis experiments were performed in a quartz tube reactor at 600, 700, and 800 °C to understand the effect of the temperature on the products obtained from untreated SB (USB) and pre-treated SB (PSB). USB and PSB samples were characterized to determine their thermal stability, elemental composition, mineral composition, and functional group identification. Pre-treatment of SB reduced the ash and Na content by 71% and 45%, respectively. Ash removal favored the pyrolysis-assisted extraction of carboxylic acids, and their selectivity in the bio-oil increased from 20.7% (USB) to 33.4% (PSB) at 600 °C. The selectivity to phenolics was observed to be the highest at 800 °C in the bio-oil from USB (10.4%) and PSB (13.4%). PSB pyrolysis increased the specific surface area of biochar by four times, whereas carbon nanostructures were observed in the biochar from USB. The formation pathways of the major compounds from the pyrolysis of various amino acids, cellulose, hemicellulose, fatty acids, and lignin present in SB were elucidated by proposing a plausible reaction scheme.

更新日期：2021-03-10

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