| 抗生素菌渣水热催化产油及其特性 |
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| 作者姓名： | 郑子轩 洪晨 李再兴 邢奕 李益飞 杨健 秦岩 赵秀梅 |
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| 作者单位： | 1.北京科技大学能源与环境工程学院，北京100083 |
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| 基金项目： | 中央高校基本科研业务费资助项目 |
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| 摘 要： | 探究了菌渣的水热液化转换成生物油燃料的过程。结果表明，抗生素菌渣在260 ℃、保留时间是135 min时，获得最大的生物油产率（28.01%）。通过6种不同的催化剂进行催化，加入催化剂后，生物油产率最大的是Na2CO3（36.06%）和NaOH（36.31%）。碱催化的生物油的含氮化合物的质量分数在41.16%～49.74%之间，而酸催化产生的生物油含氮化合物的量在57.62%～59.32%之间。通过调节催化剂Na2CO3、NaOH的添加量发现，在投加量为8%时，生物油含氮量均最低，Na2CO3和NaOH催化产生的生物油组分的含氮化合物质量分数分别为29.12%和35.67%。在催化剂投加量为10%时，对氧的脱除效果都最好，分别为32.12%和29.02%，此时产生的生物油的热值达到最大（达到33.3220和34.7320 MJ?kg?1）。
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| 关 键 词： | 抗生素菌渣 再生能源 燃料 催化剂 水热液化 |
| 收稿时间： | 2020-09-17 |
Preparation and properties of bio-oil from the antibiotic residue by hydrothermal liquefaction |
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| Authors: | ZHENG Zi-xuan HONG Chen LI Zai-xing XING Yi LI Yi-fei YANG Jian QIN Yan ZHAO Xiu-mei |
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| Affiliation: | 1.School of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China2.School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China3.College of Environment and Resources, Shanxi University, Taiyuan 030006, China4.North China Pharmaceutical Co., Ltd., Shijiazhuang 050015, China |
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| Abstract: | Antibiotic residue, a kind of biomass, is classified as hazardous waste. However, it is considered a good biomass resource because it contains rich organic matter and bacterial protein with a calorific value equivalent to that of low-rank coal. The hydrothermal method uses high-temperature liquid water as the reaction medium and reactant, which has the characteristics of high energy, fast reaction speed, large material flux, convenient feeding, and high product separation efficiency, especially avoiding the evaporation of high water content of aquatic substances. Although bio-oil obtained from the noncatalytic hydrothermal process has a high calorific value, it exhibits negative characteristics, such as high oxygen and nitrogen and high viscosity, which makes it unsuitable for use as a fuel. Therefore, catalysts are needed to improve the quality of bio-oil. This paper investigates the hydrothermal liquefaction of bacterial residues into bio-oil under a retention time of 30–240 min at 220–300 °C. Results show that the maximum yield of bio-oil is 28.01% at 260 °C for 135 min. Catalyzed by six kinds of catalysts (HCOOH, CH3COOH, K2CO3, Na2CO3, NaOH, and KOH), the highest yield of bio-oil is achieved with Na2CO3 (36.06%) and NaOH (36.31%). The content of hydrocarbons and their derivatives in the produced bio-oil is found to be relatively low at varying amounts of Na2CO3 and NaOH catalysts. The mass fraction of nitrogen-containing compounds in the alkali-catalyzed and acid-catalyzed bio-oil is 41.16%–49.74% and 57.62%–59.32%, respectively, with the best nitrogen removal obtained at a mass dosage of 8%. In particular, the contents of nitrogen compounds in the bio-oil catalyzed by Na2CO3 and NaOH are 29.12% and 35.67%, respectively. The best removal effect of oxygen is achieved at a dosage of 10%. Specifically, bio-oil components produced by Na2CO3 and NaOH contains 32.12% and 29.02% oxygen-containing compounds, respectively. Moreover, the higher heating value (HHV) of bio-oil produced with these catalysts is the largest, with an HHV of 33.3220 and 34.7320 MJ?kg?1 for Na2CO3 and NaOH, respectively. |
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