虾壳废物的热解回收和产品分布:从热重-傅立叶变换红外光谱法和热解-气相色谱/质谱分析中获得的启示

Lingbo Meng, S. Y. Foong, P. Yek, Rock Keey Liew, A. Karami, Meenakshi Verma, N. Ma, Christian Sonne, John Chi-Wei Lan, S. Lam
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引用次数: 0

摘要

由于虾营养丰富、味道鲜美,虾的消费量不断增加。因此,虾壳废物的产生量也在不断增加,而目前的处理方法(如填埋)会造成污染,并产生对生物和环境有害的沥滤液。因此,需要采取适当的管理策略来处理虾壳废物,以减轻对环境造成的不利影响。本研究提出了一种深入揭示虾壳废物特性的方法,并探索其在各种应用中的使用潜力。虾壳废料经过热解-气相色谱/质谱法和热重-傅里叶变换红外光谱热解,以评估热解产生的气体成分。热重-傅里叶变换红外光谱分析显示,当热解的最佳温度为 400 ℃-600 ℃ 时,产生的气体主要官能团为 -CH、-OH 和 -NH。另一方面,热解-气相色谱/质谱分析结果表明,碳氢化合物(51.86%)是虾壳废料在 900 °C 高温下热解的主要产物,可用于油漆、油漆稀释剂、橡胶、印刷油墨、粘合剂(胶水)。虽然它的热值为 15.113 兆焦/千克,但不能直接燃烧,因为它的氮浓度较高(10.85 重量%),可能会产生氮氧化物等有害污染物。总之,建议将热解作为将虾壳废物转化为多功能产品的可行方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pyrolysis recovery and product distribution of shrimp shell waste: Insights from thermogravimetric-Fourier transform infrared spectroscopy and pyrolysis–gas chromatography/mass spectrometry characterization
Shrimp consumption is increasing owing to its rich nutrition and delicious taste. As a result, the generation of shrimp shell waste is also increasing, while the current disposal method such as landfilling causes pollution and produces harmful leachate to living organisms and the environment. Therefore, a proper management strategy is needed to dispose of shrimp shell waste to mitigate the adverse effects caused to the environment. This study presents an in-depth approach to reveal the properties of shrimp shell waste and explore its potential for use in various applications. The shrimp shell waste was subjected to pyrolysis–gas chromatography/mass spectrometry and thermogravimetric-Fourier transform infrared spectroscopy pyrolysis to evaluate the gas composition from pyrolysis. Thermogravimetric-Fourier transform infrared spectroscopy analysis reveals that when the optimal temperature for pyrolysis is 400 °C–600 °C, the predominant functional group of gases produced are –CH, –OH, and –NH. On the other hand, the results of pyrolysis–gas chromatography/mass spectrometry indicate that hydrocarbon (51.86%) is the main product of shrimp shell waste pyrolysis at 900 °C, which can be used in paints, paint thinners, rubber, printing inks, adhesives (glue). Although it has a calorific value of 15.113 MJ/kg, it cannot be directly burned because of its high nitrogen concentration (10.85 wt.%) which may generate harmful pollutants such as nitrogen oxides. Overall, pyrolysis is recommended as a viable method for converting shrimp shell waste into versatile products.
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