Article
Chemistry, Multidisciplinary
A. J. Bowles, A. Nievas, G. D. Fowler
Summary: End of life tyres are a major waste stream with limited recycling. Pyrolysis is a promising method for waste tyre recycling, producing valuable products like recovered carbon black (RCb) and limonene. This study investigated the pyrolysis of waste tyres and identified optimal processing conditions for high-quality RCb and limonene production. The findings highlight the importance of considering processing conditions for the valorization of waste tyres through pyrolysis.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Green & Sustainable Science & Technology
Guosai Jiang, Junqing Pan, Wenzhong Deng, Yanzhi Sun, Jun Guo, Kai Che, Yuan Yang, Ziyang Lin, Yancai Sun, Chuanjin Huang, Tong Zhang
Summary: This research uses hydrochloric acid (HCl) and phosphate fertilizer acid (PFA) as leaching agents to recover high-purity CBp, achieving a purity of 99.63%. HCl solution can be recycled, while the used PFA can be converted into value-added H2SiF6. This method provides an efficient and economical way to recover high-purity CBp.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Junzhi Wang, Xinjiang Dong, Zongliang Zuo, Siyi Luo
Summary: NaOH, dolomite, and NiCl2 were investigated as catalysts for co-pyrolysis of waste bicycle tires (WT) and waste engine oil (WEO). The effects of catalysts on pyrolysis behaviors were studied using thermogravimetric analysis. The activation energy of the main reaction stage was reduced by all three catalysts. Co-pyrolysis of WT and WEO with different catalysts showed changes in the distribution of three-phase products. NaOH and dolomite increased the gas yield, while NaOH significantly improved the yield of CH4 and increased the proportion of limonene in the pyrolysis oil. This article presents a new method for efficiently producing limonene by mixing WT and WEO with NaOH.
Article
Polymer Science
Haibin Fang, Zhanfeng Hou, Lingdi Shan, Xiaohui Cai, Zhenxiang Xin
Summary: This study investigates the relationship between the physical and chemical characteristics of pyrolytic carbon black (CBp) and pyrolysis temperature. The results show that increasing the pyrolysis temperature leads to agglomeration of CBp particles, negatively affecting their dispersion within polymer matrices. CBp at 550 C-circle exhibits greater structural order. The optimal pyrolysis temperature for CBp synthesis within the continuous reactor is determined.
Article
Green & Sustainable Science & Technology
Tao Li, Shuai Wang, Wangyang Chen, Jiahui Niu, Jinlong Li, Fengbin Zhang, Yi Feng, Yaqun He, Tao Zhang
Summary: In this study, the ash reduction and desulfurisation of pyrolysis carbon black (CBp) from waste tires were investigated using Fe3+ in acid medium and flotation. The quality improvement of carbon black was achieved by adjusting different operating factors, and the products were analyzed using morphology and phase characterisation technology. The results showed that Fe3+ leaching and flotation effectively achieved desulfurisation and ash reduction of CBp, with 90.27% yield and 11.53% ash content obtained through leaching and 79.96% yield and 9.14% ash content obtained through flotation.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Applied
Somayeh Farzad, Mohsen Mandegari, Johann F. Gorgens
Summary: The study evaluates the economic feasibility of extracting limonene from tire-derived oil (TDO) produced by waste tire pyrolysis, finding that co-production of limonene significantly improves the economic performance of waste tire pyrolysis.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Environmental
Zhanlong Song, Yuting Hu, Yuankai Han, Shouyan Chen, Xiqiang Zhao, Jing Sun, Yanpeng Mao, Xujiang Wang, Wenlong Wang
Summary: Microwave pyrolysis, combined with swelling modification, was investigated for the treatment of waste tires. Swelling pretreatment reduced the cross-link density of rubber molecular chains and enhanced the completeness of pyrolysis. The yields of solid products were greatly decreased, while the yields of liquid products were significantly increased through the synergistic effect of coal tar and waste tires. This study provides directions for improving the efficiency of microwave pyrolysis of waste tires.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Hou ShengPing, Zhang Da, Xie ZhiPeng, Kang Yao, Tang ZhengGang, Dai YongNian, Lei Yong, Chen Jian, Liang Feng
Summary: This study focuses on the preparation of activated carbon (AC) from waste tire pyrolysis carbon black (CBp) using CO2 and KOH as activation agents. The AC prepared exhibited a hierarchical pore structure, high specific surface area, and low ash content, enabling abundant ion diffusion channels and active sites for charge storage. The AC was then applied to electrode of the electrical double-layer capacitor (EDLC) and demonstrated excellent rate capability and cycling stability in a three-electrode system. A symmetric supercapacitor with superior energy density and power density was also produced using the AC electrode.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Environmental Sciences
Marwa Ourak, Mylene Marin Gallego, Gaetan Burnens, Jean Francois Largeau, Sana Kordoghli, Fethi Zagrouba, Mohand Tazerout
Summary: This study investigated the mechanism and product yields of thermal pyrolysis of scrap truck tires, focusing on the effects of key parameters on the quantity and quality of liquid products. It was found that using carrier gas significantly improved the pyrolysis liquid yield, while longer residence time and larger empty volume promoted product diffusion.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Energy & Fuels
Juan Daniel Martinez, Alberto Veses, Maria Soledad Callen, Jose Manuel Lopez, Tomas Garcia, Ramon Murillo
Summary: This work presents the fractionation of tire pyrolysis oil (TPO) in a continuous operational mode under industrially relevant conditions. By assessing different process parameters, the optimal conditions for producing light and heavy fractions with high recovery efficiency were determined.
Article
Environmental Sciences
Junqing Xu, Jiaxue Yu, Wenzhi He, Juwen Huang, Junshi Xu, Guangming Li
Summary: This study examines the properties of carbon black from waste tires continuous commercial scale pyrolysis, aiming to contribute to the field and provide insights into the feasibility of commercial pyrolysis and operation methods.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Polymer Science
Wenwen Han, Deshang Han, Hongbo Chen
Summary: Waste tires, known as black pollution, present a challenge in terms of degradation. Pyrolysis provides a solution by effectively treating the waste tires and recovering valuable pyrolysis products. This paper summarizes the progress in pyrolysis research, including the mechanism, factors influencing pyrolysis (temperature and catalysts), and applications of the three types of pyrolysis products. By controlling pyrolysis temperature and using catalysts, the composition and yield of pyrolysis products can be adjusted, making them suitable for various industrial purposes after post-treatment.
Article
Polymer Science
Siqi Hao, Lizhe He, Jiaqi Liu, Yuhao Liu, Chris Rudd, Xiaoling Liu
Summary: This study successfully recovered carbon fibers through microwave pyrolysis and investigated the recovered fibers' properties and chemical compositions. It was found that the strength of the recovered fibers decreased by less than 20% compared to virgin fibers, and this reduction could be mitigated by reducing the pyrolysis temperature.
Review
Environmental Sciences
Putri Humairah Monashofian Putra, Shaifulazuar Rozali, Muhamad Fazly Abdul Patah, Aida Idris
Summary: The high demand for plastic has resulted in waste accumulation and environmental pollution, prompting researchers to explore better management methods. The concept of waste-to-wealth, adopted by the United Nations, aims to convert waste into income sources and contribute to sustainable development goals.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Thermodynamics
Jae Gyu Hwang, Byeong Kyu Lee, Myung Kyu Choi, Hoon Chae Park, Hang Seok Choi
Summary: Due to the increasing global demand for automobiles, the proper disposal of waste tires has become a significant problem. In this study, fast pyrolysis technology was used to effectively treat waste tires and the optimal pyrolysis conditions were investigated. The characteristics of the resulting pyrolysis oil were analyzed, and high value-added D-limonene was successfully recovered through distillation.
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)