Article
Energy & Fuels
Norbert Miskolczi, Szabina Tomasek
Summary: This study investigated the pyrolysis process of municipal sewage sludge samples using thermogravimetric analysis. The results revealed that decomposition reactions occurred in the range of 200-600℃ and involved biodegradable components, proteins, and carbohydrates. The study also compared different methods for calculating the kinetic parameters and found variations in the activation energy range for samples from different sources.
Article
Chemistry, Multidisciplinary
Fangjun Chen, Shiliang Yang, Jianhang Hu, Qingang Xiong
Summary: This study investigates the catalytic effect of calcined copper slag on the pyrolysis of municipal sewage sludge. The results show that copper slag can accelerate the thermal decomposition rate of sewage sludge and affect the composition of the gaseous products. This is of great significance for the integrated resource recycling of these two solid wastes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Energy & Fuels
Haobo Bi, Chengxin Wang, Xuedan Jiang, Chunlong Jiang, Lin Bao, Qizhao Lin
Summary: The study investigated the co-pyrolysis characteristics of sewage sludge and peanut shell under nitrogen atmosphere, using thermogravimetric - Fourier transform infrared spectrometry and artificial neural network. The experiments revealed a synergistic effect between sewage sludge and peanut shell, with shared gases and functional groups. The activation energy E was calculated using two non-isothermal kinetic analysis methods, and the best ANN model (ANN21) for predicting pyrolysis was identified.
Article
Environmental Sciences
Guiying Xu, Xinghui Cai, Shan Wang, Baizeng Fang, Hanxi Wang, Youjian Zhu
Summary: This study investigated the co-pyrolysis features and gas products of oily sludge and waste tires using thermogravimetric-infrared spectroscopy. The results showed that the co-pyrolysis of these two materials exhibits synergistic effects, providing valuable data for the treatment of oily sludge and waste tires in collaboration.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Hao Sun, Haobo Bi, Chunlong Jiang, Zhanshi Ni, Junjian Tian, Wenliang Zhou, Zhicong Qiu, Qizhao Lin
Summary: This study investigated the co-pyrolysis characteristics and kinetics of sewage sludge (SS) and wet waste (WW) using TG-FTIR-GC/MS and ANN techniques. The results showed that the S3W7 mixture exhibited a synergistic effect on pyrolysis and effectively reduced CO2 emissions. GC/MS analysis revealed that the gas products of S3W7 mainly contained nitrides, hydrocarbons containing C=O, and furans. Machine learning methods were used to analyze the pyrolysis process and establish a prediction model.
Article
Energy & Fuels
Xiao-Yan Zhao, Wei Jiang, Yi-Fu Shan, Jing-Pei Cao
Summary: The study found that lysine undergoes two pathways to produce nitrogen-containing compounds, while tryptophan is converted into indoles. In addition, catalytic denitrification can effectively transform sewage sludge into stable compounds.
Article
Energy & Fuels
Peng Xu, Peng Wang, Laihong Shen
Summary: This paper focuses on the nitrogen distribution during tea waste pyrolysis and its dependence on temperature and atmosphere. The results show that the introduction of H2 enhances the gas-N yield but decreases the char-N and tar-N yields. Under a H2-rich atmosphere, amide-N undergoes deamination to produce more NH3-N at lower temperatures, and amine-N undergoes secondary cracking to increase the yields of NH3-N and HCN-N. As the temperature increases, H radicals accelerate the ring rupture and full hydrogenation of pyridinic-N/pyrrolic-N in char, as well as the thermal cracking and ring opening of nitrile-N and heterocyclic-N.
Article
Chemistry, Multidisciplinary
Walid Nabgan, Bahador Nabgan, Tuan Amran Tuan Abdullah, Muhammad Ikram, Arvind H. Jadhav, Aishah Abdul Jalil, Mohamad Wijayanuddin Ali
Summary: Solvent-based recycling of plastic shows significant improvement in pyrolysis-catalytic steam reforming. This study utilized plastic waste dissolved in phenol as feed for catalytic cracking and steam reforming reactions, generating valuable liquid fuels and hydrogen. The incorporation of Pd into Ni/TNPs nanocatalyst enhanced the redox properties and hydrogen yield, making it a promising catalyst for MPW-phenol cracking and steam reforming reactions.
Article
Chemistry, Physical
Wei Zhang, Xiaowei Wang, Qianshi Song, Qianyi Chen, Haowen Li, Zixin Yang, Xiaohan Wang
Summary: The objective of this study is to investigate the effects of inorganic element catalysis and basic fuel properties on pyrolysis kinetics and self-sustained smoldering characteristics of sewage sludge. The study found that the pyrolysis process can be divided into two stages determined by the organic and inorganic components of the fuel. Inorganic components have a significant catalytic effect on volatiles release and decomposition. The smoldering experiment showed different propagation speeds for the smoldering front and the evaporation front. The research findings contribute to the development and optimization of sewage sludge disposal by considering feedstock composition.
Article
Chemistry, Analytical
Agnieszka Krzyszczak, Michal P. Dybowski, Bozena Czech
Summary: The research investigates the effect of pyrolysis temperature on the formation of PAHs and their derivatives in biochars, showing that temperature and feedstock types affect the content and types of bioavailable PAHs. The study also reveals varying levels of toxic compounds in biochars derived from different sources, with potential limitations on their agricultural applications.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Environmental Sciences
Paulina Godlewska, Patryk Oleszczuk
Summary: This study investigated the persistence and bioavailability of polycyclic aromatic hydrocarbons (PAHs) in biochar-amended soil. The study found that the production conditions of biochar and the change in atmosphere can affect the content of PAHs in the soil.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Sangho Lee, Young-Min Kim, Muhammad Zain Siddiqui, Young-Kwon Park
Summary: Thermogravimetric analysis and pyrolyzer-gas chromatography/mass spectrometry were used to study the kinetic behavior and product distribution of thermal and catalytic pyrolysis of different types of sewage sludge. Municipal sewage sludge (MSS) has a lower activation energy and produces more fatty acids and cholesterol than livestock manure sewage sludge (LMSS). By using a different catalyst, the product distribution of MSS can be altered, increasing the yield of aromatic hydrocarbons.
ENVIRONMENTAL POLLUTION
(2021)
Article
Green & Sustainable Science & Technology
Dan Li, Shijun Lei, Ping Wang, Lei Zhong, Wenchao Ma, Guanyi Chen
Summary: Pyrolysis is a promising technology for recovering valuable hydrocarbons from waste streams. This study investigated three types of waste plastics and their mixed forms to explore thermal cracking features, products distribution, and kinetic features. Results showed differences in pyrolysis products and reaction processes among different types of plastics, with synergistic effects observed during co-pyrolysis processes.
Article
Chemistry, Analytical
Jingshu Li, Yanlong Li, Feifei Liu, Xiaojuan Zhang, Mengnv Song, Rundong Li
Summary: Biochar produced by pyrolysis of sewage sludge has great potential for P recycling, but the transformation mechanism of phosphorus species during pyrolysis is still unclear, limiting its further application. This study investigated the effects of pyrolysis temperature and additives on P speciation and proposed the transformation pathways and mechanism. The results showed that various P forms in sewage sludge were converted to different compounds, with the addition of CaO promoting the formation of Ca-P. The study provides theoretical support for the agricultural application of SS-pyrolysis biochar.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Environmental Sciences
Ziyao Shi, Xiaorong Zhao, Zaiqian Wang, Yihan Huang, Yimin Luo, Xuquan Huang
Summary: This study investigated the effect of particle size distribution of quartz sand conditioners on sludge dewatering performance. The results showed that the particle size distribution significantly influenced the efficiency of sludge dewatering. By changing the particle size distribution, the conditioners improved the dewatering channels and pore structure of the sludge.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Organic
Jian Xie, Cai Xu, Qianjin Dai, Xiaozhong Wang, Gang Xu, Yingqi Chen, Liyan Dai
Article
Chemistry, Analytical
Qianjin Dai, Junming Wen, Xuguang Jiang, Liyan Dai, Yuqi Jin, Fei Wang, Yong Chi, Jianhua Yan
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2018)
Article
Energy & Fuels
Qianjin Dai, Xuguang Jiang, Yunfan Jiang, Yuqi Jin, Fei Wang, Yong Chi, Jianhua Yan, Aihua Xu
Article
Energy & Fuels
Qianjin Dai, Xuguang Jiang, Yunfan Jiang, Yuqi Jin, Fei Wang, Yong Chi, Jianhua Yan
Article
Chemistry, Analytical
Qianjin Dai, Xuguang Jiang, Fei Wang, Yong Chi, Jianhua Yan
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2013)
Article
Acoustics
Qiang Liu, Songyong Liu, Qianjin Dai, Xiao Yu, Daoxiang Teng, Ming Wei
Summary: This study applied machine learning tools to address the challenge of incipient fault detection and identification (IFDI) of cutting arms, showing that support vector machines based on dynamic cuckoo outperformed other methods. It also provided fault diagnosis and design improvement scheme for cutting arms of roadheader.
SHOCK AND VIBRATION
(2021)
Article
Chemistry, Analytical
Qianjin Dai, Qiang Liu, Murat Yilmaz, Xueyang Zhang
Summary: Co-pyrolysis of sewage sludge and lignin is a promising method for disposing of sludge and obtaining valuable biochar. The addition of lignin promotes the sludge decomposition and improves the specific surface area and adsorption capacity of biochar.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Energy & Fuels
Qianjin Dai, Qiang Liu, Xueyang Zhang, Lingyu Cao, Bin Hu, Jian Shao, Fangjun Ding, Xinsong Guo, Bin Gao
Summary: This study investigates the synergy effect of co-pyrolysis of sewage sludge, lignin, and their mixtures on biochar production. The results show that the synergy effect promotes the decomposition of the mixture and reduces the reaction temperature. The biochar yields and the adsorption capacity of methylene blue vary under different temperatures. The excellent adsorption property of biochar is attributed to the abundant functional groups and increased specific surface area.
Article
Engineering, Environmental
Qianjin Dai, Wei Xiang, Qiang Liu, Min Wang, Xueyang Zhang
Summary: Co-pyrolysis of sewage sludge and biomass with lignin as a major component showed improvements in biochar quality. The process promoted the decomposition of the mixture and reduced reaction temperature. The characteristics, kinetics, and effects of co-pyrolysis were studied, revealing the influence of pyrolysis temperature and mixing proportion on biochar yield, porosity, and methylene blue adsorption capacity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Qianjin Dai, Xuguang Jiang, Yuqi Jin, Fei Wang, Yong Chi, Jianhua Yan, Aihua Xu
FRESENIUS ENVIRONMENTAL BULLETIN
(2014)
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)