Preparation of aromatic hydrocarbons from catalytic pyrolysis of digestate

doi:10.1016/j.cjche.2022.09.002

Chinese Journal of Chemical Engineering ›› 2023, Vol. 57 ›› Issue (5): 1-9.DOI: 10.1016/j.cjche.2022.09.002

Preparation of aromatic hydrocarbons from catalytic pyrolysis of digestate

Haodi Tan¹, Minjiao Yang^1,2, Yingquan Chen¹, Xu Chen¹, Francesco Fantozzi^2,3, Pietro Bartocci⁴, Roman Tschentscher⁵, Federica Barontini⁶, Haiping Yang¹, Hanping Chen¹

1. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China;
2. China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, China;
3. Department of Engineering, University of Perugia, Perugia 06125, Italy;
4. Instituto de Carboquímica (ICB-CSIC), Miguel Luesma Castán 4, 50018 Zaragoza, Spain;
5. SINTEF Industry AS, Forskningsveien 1, 0373 Oslo, Norway;
6. Dipartimento di Ingegneria Civile e Industriale, Università di Pisa, Largo Lucio Lazzarino 2, Pisa 56122, Italy

Received:2022-04-04 Revised:2022-08-31 Online:2023-07-08 Published:2023-05-28
Contact: Yingquan Chen,E-mail:chenyingquan@hust.edu.cn;Pietro Bartocci,E-mail:pbartocci@icb.csic.es
Supported by:
This work was partially funded by the GTCLC-NEG project, which received funding from the European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Grant Agreement(101018756). The authors would like to thank the Brisk 2 European project (731101) for funding this project. The project acronym was B2PB-SIN2-1001, and the project title was "Optimization of catalytic pyrolysis of digestate and sewage sludge."

Preparation of aromatic hydrocarbons from catalytic pyrolysis of digestate

Haodi Tan¹, Minjiao Yang^1,2, Yingquan Chen¹, Xu Chen¹, Francesco Fantozzi^2,3, Pietro Bartocci⁴, Roman Tschentscher⁵, Federica Barontini⁶, Haiping Yang¹, Hanping Chen¹

1. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China;
2. China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, China;
3. Department of Engineering, University of Perugia, Perugia 06125, Italy;
4. Instituto de Carboquímica (ICB-CSIC), Miguel Luesma Castán 4, 50018 Zaragoza, Spain;
5. SINTEF Industry AS, Forskningsveien 1, 0373 Oslo, Norway;
6. Dipartimento di Ingegneria Civile e Industriale, Università di Pisa, Largo Lucio Lazzarino 2, Pisa 56122, Italy

通讯作者: Yingquan Chen,E-mail:chenyingquan@hust.edu.cn;Pietro Bartocci,E-mail:pbartocci@icb.csic.es
基金资助:
This work was partially funded by the GTCLC-NEG project, which received funding from the European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Grant Agreement(101018756). The authors would like to thank the Brisk 2 European project (731101) for funding this project. The project acronym was B2PB-SIN2-1001, and the project title was "Optimization of catalytic pyrolysis of digestate and sewage sludge."

Abstract

Abstract: Catalytic pyrolysis of digestate to produce aromatic hydrocarbons can be combined with anaerobic fermentation to effectively transform and utilize all biomass components, which can achieve the meaningful purpose of transforming waste into high-value products. This study explored whether catalytic pyrolysis of digestate is feasible to prepare aromatic hydrocarbons by analyzing the thermogravimetric characteristics, pyrolysis characteristics, and catalytic pyrolysis characteristics of digestate. For digestate pyrolysis, an increase in temperature was found to elevate the CO, CH₄, and monocyclic aromatic hydrocarbon (benzene, toluene, and xylene; BTX) content, whereas it decreased the contents of phenols, acids, aldehydes, and other oxygenates. Furthermore, the catalytic pyrolysis process effectively inhibited the acids, phenols, and furans in the liquid, whereas the yield of BTX increased from 25.45% to 45.99%, and the selectivity of xylene was also increased from 10.32% to 28.72% after adding ZSM-5. ZSM-5 also inhibited the production of nitrogenous compounds.

Key words: Digestate, Catalysis, Pyrolysis, Aromatic hydrocarbons, Molecular sieves

摘要： Catalytic pyrolysis of digestate to produce aromatic hydrocarbons can be combined with anaerobic fermentation to effectively transform and utilize all biomass components, which can achieve the meaningful purpose of transforming waste into high-value products. This study explored whether catalytic pyrolysis of digestate is feasible to prepare aromatic hydrocarbons by analyzing the thermogravimetric characteristics, pyrolysis characteristics, and catalytic pyrolysis characteristics of digestate. For digestate pyrolysis, an increase in temperature was found to elevate the CO, CH₄, and monocyclic aromatic hydrocarbon (benzene, toluene, and xylene; BTX) content, whereas it decreased the contents of phenols, acids, aldehydes, and other oxygenates. Furthermore, the catalytic pyrolysis process effectively inhibited the acids, phenols, and furans in the liquid, whereas the yield of BTX increased from 25.45% to 45.99%, and the selectivity of xylene was also increased from 10.32% to 28.72% after adding ZSM-5. ZSM-5 also inhibited the production of nitrogenous compounds.

关键词: Digestate, Catalysis, Pyrolysis, Aromatic hydrocarbons, Molecular sieves

Haodi Tan, Minjiao Yang, Yingquan Chen, Xu Chen, Francesco Fantozzi, Pietro Bartocci, Roman Tschentscher, Federica Barontini, Haiping Yang, Hanping Chen. Preparation of aromatic hydrocarbons from catalytic pyrolysis of digestate[J]. Chinese Journal of Chemical Engineering, 2023, 57(5): 1-9.

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Preparation of aromatic hydrocarbons from catalytic pyrolysis of digestate

Preparation of aromatic hydrocarbons from catalytic pyrolysis of digestate

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