Article
Thermodynamics
Yuan Jiang, Peijie Zong, Bin Tian, Xue Ming, Fanfan Xu, Yuanyu Tian, Yingyun Qiao, Dawei Li, Qingshuo Song, Qiankun Yu
Summary: Studying the pyrolysis behavior of the saturate component in coal, which mainly consists of volatile substances, through the combined utilization of TG-FTIR and Py-GC/MS revealed a free radical reaction mechanism. The research provides a methodological model for exploring other group components and reveals specific details about the pyrolysis of coal.
Article
Environmental Sciences
Weijie Xu, Jingyong Liu, Ziyi Ding, Jiawei Fu, Fatih Evrendilek, Wuming Xie, Yao He
Summary: This study characterized and verified the pyrolysis mechanisms and volatiles products of medical mask belts, mask faces, and infusion tubes. The results are important for the treatment of medical wastes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Thermodynamics
Wenwen Kong, Boxiong Shen, Jiao Ma, Jia Kong, Shuo Feng, Zhuozhi Wang, Lifu Xiong
Summary: The pyrolysis characteristics of Spirulina platensis, Tetradesmus obliquus, and Chlorella vulgaris were investigated by various techniques. The elemental and biochemical composition of different microalgae influenced their pyrolysis behavior. The pyrolysis process of the three microalgae could be divided into several stages, and the major reaction occurred at a certain temperature range. Different products and activation energies were observed for each microalgae. The pyrolysis of Spirulina platensis produced more CO2 and compounds containing C=O bonds, while Tetradesmus obliquus and Chlorella vulgaris produced slightly higher levels of hydrocarbons.
Article
Chemistry, Multidisciplinary
Yan Yang, Shin Ying Foong, Peter Nai Yuh Yek, Abdallah A. A. Mohammed, Meenaksi Verma, Hui Suan Ng, Sang-Chul Jung, Yifeng He, Wanxi Peng, Su Shiung Lam
Summary: This study aims to convert and reuse shellfish waste (SW) by performing pyrolysis to transform it into value-added products. The findings indicate that SW is not suitable for direct use as fuel due to its low high calorific value, but can be transformed into valuable chemicals through pyrolysis. These findings are significant for advancing sustainable waste management strategies and utilizing waste materials in various industries.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Thermodynamics
Zhi Wang, Yuechi Che, Jian Li, Wenzhu Wu, Beibei Yan, Yingxiu Zhang, Xutong Wang, Fan Yu, Guanyi Chen, Xiaoyu Zuo, Xiujin Li
Summary: This study investigated the effects of anaerobic digestion pretreatment on the pyrolysis characteristics of Sargassum. The results showed that increasing the anaerobic digestion duration decreased the content of extract and cellulose, while increasing the content of lignin in Sargassum. The fiber crystallinity and specific surface area of Sargassum were increased due to changes in chemical composition. Anaerobic digestion also affected the gaseous and liquid products of pyrolysis, enhancing the thermal stability of Sargassum. The composition and structure of the biomass were altered, affecting the quality of the pyrolytic products.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Engineering, Environmental
Ziyi Ding, Huashan Chen, Jingyong Liu, Haiming Cai, Fatih Evrendilek, Musa Buyukada
Summary: This study characterized the pyrolysis process of medical plastic wastes through TG-FTIR and Py-GC/MS analyses, finding that medical bottles showed better pyrolysis performance with lower residue content.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Analytical
Jiuling Yang, Haoliang Wang, Wei Huang, Xiaofeng Peng, Bo Yuan, Yuqi Hu
Summary: This study analyzes the pyrolysis characteristics and gas evolution behavior of forest duff under different heating rates and pyrolysis temperatures. The research reveals the decomposition temperature ranges of different components in forest duff and identifies the main functional groups and volatile products produced during pyrolysis. The study also emphasizes the importance of considering heating rate and pyrolysis temperature in the development of bioenergy and value-added chemicals from forest duff.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Analytical
Peng Ling, Jun Xu, Tao Liu, Xiaoxue An, Xin Wang, Mohamed E. Mostafa, Hengda Han, Kai Xu, Long Jiang, Yi Wang, Sheng Su, Song Hu, Jun Xiang
Summary: This study investigated the pyrolysis kinetics and pyrolytic products distribution of coal slime and compared it with raw coal. The results showed that the pyrolysis of coal slime consists of three reaction stages, with the decomposition of volatiles as the main stage. The presence of inorganic minerals significantly influenced the pyrolysis reaction, and the alkene content of pyrolysis products decreased while the contents of CO2 and aromatics increased in coal slime compared to raw coal. These findings provide theoretical and practical guidance for the efficient thermochemical conversion and utilization of coal slime.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Analytical
Jiangfei Duan, Shengxia Feng, Weilong He, Rui Li, Peng Zhang, Yu Zhang
Summary: The manuscript utilized TG-FTIR, Py-GC/MS, and kinetic models to study the pyrolysis characteristics of electrolytic manganese residue. The pyrolysis process was divided into five stages, each with different kinetic mechanisms and released gases, with NH3, CO2, and SO2 as the major gases. The intermediate product of CO was unstable and participated in reactions promoting the formation of CO2 and SO2.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Analytical
Yansheng Huang, Daniel Takyi Sekyere, Jinhong Zhang, Yuanyu Tian
Summary: The fast pyrolysis behavior of mushroom bran (MB) and corn straw (CS) with high ash and high nitrogen content was studied using high heating rate TG-FTIR and PyGC/MS. The study found that at higher heating rates, there is an overlap of the decomposition of starch and hemicellulose, potentially promoting the formation of furan and furfural. Nitrogen tends to migrate from hydrogen cyanide to NH3 before 450 degrees C. Deoxidation and denitrification primarily occur between the pyrolysis temperature range of 300 degrees C to 350 degrees C. Staged pyrolysis interrupts the oil's continuous deoxidation process, and it reduces the selectivity of aldehydes and ketones in MB and CS pyrolysis. This study provides detailed pyrolysis characteristics for high nitrogen and ash content biomass.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Thermodynamics
Jiaqing Zhang, Yi Guo, Long Shi, Qiang Liu, Shixiong Jiang, Yaoqiang Li, Kaiyuan Li
Summary: This study investigates the pyrolysis characteristics of transformer insulating paperboard (TIPB) using thermogravimetric analysis. The results show that the pyrolysis temperature and residue yield of TIPB are influenced by its composition. FTIR analysis reveals the presence of CO2, H2O, and functional groups containing C=C and C=O bonds in the pyrolysis products. Py-GC/MS and FTIR results further provide insights into the types of compounds present in TIPB.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Paper & Wood
Langui Xu, Yujian Zhang, Ziyong Wang, Shurui Guo, Yongxing Hao, Yuguo Gao, Min Xin, Yi Ran, Shuxun Li, Rui Ji, Hongmei Li, Huixia Jiang, Qingyan He, Ruyi Huang
Summary: This study investigates the pyrolysis performances and reaction kinetics of pine needles using thermogravimetric analysis, Fourier transform infrared spectroscopy, and pyrolysis-gas chromatography/mass spectrometry. It was found that pine needles showed higher pyrolysis efficiency at lower heating rates, while increased heating rates promoted the reaction. The activation energies of hemicellulose, cellulose, and lignin were calculated to be 156, 165, and 172 kJ/mol, respectively, using the King-Kai method. The main pyrolytic by-products identified were hydrocarbons, phenols, alcohols, ketones, and aldehydes. This study demonstrates the significant potential of pine needles as a suitable source for bioenergy.
Article
Environmental Sciences
Vikranth Volli, Anjani Ravi Kiran Gollakota, Chi-Min Shu
Summary: This study compared the thermochemical behavior and composition of degradation products among cellulose, lignin, and agricultural residues through various analytical methods. The results showed distinct differences in the pyrolysis behavior of these biomass components, highlighting the influence at optimized temperatures for higher selectivity of value-added chemicals and bioenergy.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Vikranth Volli, Ravi Varma, Debalaxmi Pradhan, Achyut Kumar Panda, Raghubansh Kumar Singh, Chi -Min Shu
Summary: This study investigated the pyrolysis process of Simal cotton seeds, a non-edible biomass feedstock, including the kinetics, thermodynamics, and product analysis. The active pyrolysis region was found to be between 220 and 600 degrees C, with peak temperatures around 338.1-362.4 degrees C. The degradation of hemicellulose and cellulose was observed at temperatures below 300 degrees C and in the range of 300-400 degrees C, respectively. The composition of evolved mixed gases and functional groups was analyzed, and the order of volatile pyrolysis products was determined using Py-GC/MS.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Thermodynamics
Fangyu Fan, Zongling Yang, Xianjun Xing
Summary: Corn straw, as a large-yield agricultural waste, can be thermochemically treated for comprehensive utilization. Advanced techniques like TG-FTIR and TG-GC/MS were used to analyze the pyrolysis process more clearly. Results showed that the pyrolysis of corn straw leads to the production of various volatile organic compounds, with significant changes in composition at different temperatures.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Analytical
Guanshuai Zhang, Shanjian Liu, Dongmei Bi, Zhisen He, Jia Liu, Yinjiao Liu
Summary: Hydrogen peroxide pretreatment was applied for fast pyrolysis of corn stalks, and it was found that the pretreatment effectively promoted lignin depolymerization and decreased the reaction activation energy. The pretreatment also increased the cellulose content and removed alkali and alkaline earth metals from the biomass. The pH of the hydrogen peroxide solution affected the removal of lignin and ash by the pretreatment, and the composition of bio-oil changed significantly, with a significant increase in the relative content of levoglucosan after pretreatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2024)
