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榛子壳腐殖质热分解的表征及动力学分析

Characterization and kinetics analysis of the thermal decomposition of the humic substance from hazelnut husk.

作者信息

Kara Fatma, AdigÜzel Duygu, Atmaca Ufuk, Çelİk Murat, Naktİyok Jale

机构信息

Department of Chemical Engineering, Engineering Faculty, Atatürk University, Erzurum Turkey.

Oltu Vocational School, Atatürk University, Oltu, Erzurum Turkey.

出版信息

Turk J Chem. 2020 Dec 16;44(6):1483-1494. doi: 10.3906/kim-2004-62. eCollection 2020.

DOI:10.3906/kim-2004-62
PMID:33488246
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7763116/
Abstract

A humic substance was obtained from hazelnut husk using an alkali extraction. The chemical and morphological structure of the humic matter was characterized via elemental analysis, Fourier transform infrared spectrometry (FTIR), nuclear magnetic resonance, Brunauer-Emmet-Teller (BET) analysis, scanning electron microscopy (SEM), and thermogravimetric-FTIR (TG-FTIR). In addition, thermal analysis measurements TG analysis-differential thermogravimetry/differential scanning calorimetry (TGA-DTG/DSC) were performed under dynamic air conditions to better determine the origin, physical and chemical structure, and decomposition process of the humic matter. The Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO) methods were used to calculate the kinetic parameters of the high-temperature decomposition process. It was observed that the activation energy values were almost constant at certain conversion and temperature intervals. In addition, the structure of the humic substance at different temperatures was also investigated via FTIR analysis. It was found that the obtained humic substance had a very stable structure and decomposed at a high temperature. The stability of the humic matter can be a useful tool in the environmental quality research of soil.

摘要

采用碱提取法从榛子壳中获得了一种腐殖物质。通过元素分析、傅里叶变换红外光谱（FTIR）、核磁共振、布鲁诺尔-埃米特-泰勒（BET）分析、扫描电子显微镜（SEM）和热重-傅里叶变换红外光谱（TG-FTIR）对腐殖质的化学和形态结构进行了表征。此外，在动态空气条件下进行了热分析测量——热重分析-微商热重/差示扫描量热法（TGA-DTG/DSC），以更好地确定腐殖质的来源、物理和化学结构以及分解过程。采用基辛格-赤平-ose（KAS）法和弗林-沃尔-小泽（FWO）法计算了高温分解过程的动力学参数。观察到在一定的转化率和温度区间内活化能值几乎恒定。此外，还通过FTIR分析研究了不同温度下腐殖物质的结构。发现所获得的腐殖物质具有非常稳定的结构，并在高温下分解。腐殖质的稳定性可能是土壤环境质量研究中的一个有用工具。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/aa9079bd2059/turkjchem-44-1483-fig008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/c9f4a21c616f/turkjchem-44-1483-fig001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/bc9adb03ef4a/turkjchem-44-1483-fig002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/5c9c8e4e5dda/turkjchem-44-1483-fig003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/66a072c9f676/turkjchem-44-1483-fig004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/956c39a26f92/turkjchem-44-1483-fig005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/ccfbf320a739/turkjchem-44-1483-fig006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/532fc018b861/turkjchem-44-1483-fig007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/aa9079bd2059/turkjchem-44-1483-fig008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/c9f4a21c616f/turkjchem-44-1483-fig001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/bc9adb03ef4a/turkjchem-44-1483-fig002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/5c9c8e4e5dda/turkjchem-44-1483-fig003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/66a072c9f676/turkjchem-44-1483-fig004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/956c39a26f92/turkjchem-44-1483-fig005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/ccfbf320a739/turkjchem-44-1483-fig006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/532fc018b861/turkjchem-44-1483-fig007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa7c/7763116/aa9079bd2059/turkjchem-44-1483-fig008.jpg

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本文引用的文献

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Use of thermal analysis coupled with differential scanning calorimetry, quadrupole mass spectrometry and infrared spectroscopy (TG-DSC-QMS-FTIR) to monitor chemical properties and thermal stability of fulvic and humic acids.
运用热分析联用技术，包括差示扫描量热法、四极杆质谱和傅里叶变换红外光谱（TG-DSC-QMS-FTIR），来监测腐殖酸和黄腐酸的化学性质和热稳定性。
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