Article
Green & Sustainable Science & Technology
Nichaboon Chaihad, Yohanes Andre Situmorang, Aisikaer Anniwaer, Irwan Kurnia, Surachai Karnjanakom, Yutaka Kasai, Abuliti Abudula, Prasert Reubroycharoen, Guoqing Guan
Summary: Hierarchical HZSM-5 zeolites prepared by desilication with TPAOH-assisted NaOH exhibited enhanced catalytic performance in the upgrading of bio-oil derived from fast pyrolysis of sunflower stalk, with the best performance achieved through metal modification. Specifically, 0.25 wt% Cu loaded hierarchical HZSM-5 showed increased aromatic hydrocarbons yield with reduced coke formation.
Article
Chemistry, Analytical
Nichaboon Chaihad, Aisikaer Anniwaer, Surachai Karnjanakom, Yutaka Kasai, Suwadee Kongparakul, Chanatip Samart, Prasert Reubroycharoen, Abuliti Abudula, Guoqing Guan
Summary: Cu-modified HZSM-5 catalyst showed improved catalytic performance in upgrading bio-oil, with higher aromatic hydrocarbons yield attributed to suitable acidity and optimal Cu loading amount. Moreover, the catalyst exhibited excellent reusability and regeneration property.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Energy & Fuels
Nuttapan Promsampao, Nuwong Chollacoop, Adisak Pattiya
Summary: This study investigates the characteristics and activities of HZSM-5 catalyst after undergoing low-temperature hydrothermal treatment, and finds that the treatment can improve the performance of the catalyst and increase the yield of non-aqueous catalytic bio-oil. The deoxygenation ability of the treated bio-oil is still acceptable, even with increased deactivation of the catalyst under higher biomass conditions.
Article
Agricultural Engineering
Hong Tian, Rui Zhu, Lei Chen, Jiawei Wang, Yi Cheng
Summary: The valorization of Miscanthus pyrolysis was investigated to obtain aromatic hydrocarbons rich bio-oil, biochar, and combustible gas by coupling torrefaction with MoO3/ZSM-5 dual catalysis process. With optimal conditions, the system achieved high conversion rates of bio-oil, biochar, and gas. The combined method showed promising results by decreasing oxygen content and increasing aromatic yield.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Agricultural Engineering
A. Dimitriadis, D. Liakos, U. Pfisterer, M. Moustaka-Gouni, D. Karonis, S. Bezergianni
Summary: This study found that hydrotreated pyrolysis oil can be miscible with different petroleum streams, and in some cases can even improve fuel characteristics, potentially allowing for its integration in oil refineries.
BIOMASS & BIOENERGY
(2021)
Article
Agricultural Engineering
Nichaboon Chaihad, Aisikaer Anniwaer, Aghietyas Choirun Az Zahra, Yutaka Kasai, Prasert Reubroycharoen, Katsuki Kusakabe, Abuliti Abudula, Guoqing Guan
Summary: The issue of narrow micropores in traditional protonic type Zeolite Socony Mobil-5 (HZSM-5) catalysts, which restrict the diffusion of large-molecular reactants/products, was tackled by preparing hollow HZSM-5 with a mesoporous shell. The efficient catalyst of Hollow(30)-TP showed significantly higher aromatic hydrocarbon yields for cellulose and hemicellulose compared to traditional HZSM-5, and exhibited excellent reusability and regeneration due to increased accessibility to acid sites.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Xiuhua Yang, Linyao Ke, Qiuhao Wu, Xian Cui, Qi Zhang, Xiaojie Tian, Yuan Zeng, Kirk Cobb, Yuhuan Liu, Roger Ruan, Yunpu Wang
Summary: The study shows that microwave-assisted pyrolysis is an efficient and fast method for producing aromatic bio-oil from spent bleaching clay (SBC). Compared to electric heating, microwave heating not only saves reaction time and energy consumption but also promotes the formation of aromatic hydrocarbons. The optimal pyrolysis conditions include a temperature of 500°C, a feedstock to catalyst mass ratio of 10/1, and a nitrogen flow rate of 50 mL/min.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Green & Sustainable Science & Technology
Athanasios Dimitriadis, Loukia P. Chrysikou, George Meletidis, George Terzis, Milos Auersvald, David Kubicka, Stella Bezergianni
Summary: This study investigated the upgrading of pyrolysis bio-oil through mild hydrotreatment, finding that the longest catalyst life was achieved under specific operating conditions. Furthermore, several properties of the initial bio-oil were improved during the upgrading process.
Article
Chemistry, Analytical
Yanhui Bin, Zhaosheng Yu, Meirong Li, Zigan Huang, Jinbo Zhan, Yanfen Liao, Anqing Zheng, Xiaoqian Ma
Summary: In this study, H-type multilamellar MFI nanosheets (HMMN) were used for catalytic reforming of municipal solid waste (MSW) and sawdust co-pyrolysis to produce high-value bio-oil. The results showed that HMMN exhibited high selectivity for monocyclic aromatic hydrocarbons (MAHs) and significantly reduced the content of oxygen-containing compounds (OCCs). The addition of MSW improved the pyrolysis behaviors of sawdust, promoting the formation of MAHs and reducing the relative yield of OCCs. HMMN had a catalytic effect on deoxygenation and aromatization reactions.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Review
Energy & Fuels
Anja Oasmaa, Jani Lehto, Yrjo Solantausta, Sirpa Kallio
Summary: The review summarizes VTT's development efforts in fast pyrolysis over the past 40 years, showcasing a wide range of feedstocks and products tested. Plastic wastes are currently seen as the most promising industrial opportunity in this field.
Article
Multidisciplinary Sciences
Rami Doukeh, Dorin Bombos, Mihaela Bombos, Elena-Emilia Oprescu, Gheorghe Dumitrascu, Gabriel Vasilievici, Catalina Calin
Summary: The study evaluated the catalytic activity of a specific catalyst in the hydrotreating process of bio-oil produced from biomass pyrolysis, showing that the catalyst performed well under mild conditions in reducing acid content and achieving high conversion rates, demonstrating feasibility in bio-oil upgrading.
SCIENTIFIC REPORTS
(2021)
Article
Agricultural Engineering
Rahmad Mohd Taib, Nurhayati Abdullah, Nur Syairah Mohamad Aziz
Summary: This study investigated the fast pyrolysis of banana pseudo-stem (BPS) to determine the optimal conditions for maximum liquid yield, finding that a pyrolysis temperature of 500°C and a residence time of 1.02 s were ideal. Under these conditions, a total liquid yield of 39.4% was achieved, with a high heating value of approximately 5.35 MJ/kg for the BPS liquid obtained. The BPS bio-oil was found to contain common functional groups and chemical compounds related to phenols.
BIOMASS & BIOENERGY
(2021)
Article
Energy & Fuels
Meiling Xia, Yunpu Wang, Qiuhao Wu, Yuan Zeng, Shumei Zhang, Leilei Dai, Rongge Zou, Yuhuan Liu, Roger Ruan
Summary: In this study, biochar was prepared from Camellia oleifera Abel shell using HNO3 impregnation and pyrolysis, and used as a catalyst for the catalytic pyrolysis of waste vegetable oil to produce bio-oil. The results showed that HNO3 treatment significantly affected the composition and structure of the biochar catalyst, and the catalyst exhibited remarkable catalytic performance.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Sureekan Kingputtapong, Narong Chanlek, Yingyot Poo-arporn, Napida Hinchiranan
Summary: This research aims to improve the quality of waste tire pyrolysis oil (WTPO) by hydrogenation to remove toxic polycyclic aromatic hydrocarbons (PAHs). The study consists of two steps, screening suitable catalysts through the hydrogenation of naphthalene and applying the chosen catalysts for the hydrogenation of WTPO. The selection of catalysts and the chemical structure of PAHs have an impact on hydrogenation efficiency and desulfurization ability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Chemical
Le Wu, Ting Yan, Kun Qian, Furong Hong
Summary: Integration of monthly changes in lignocellulosic biomass production and algae growth rate is used in designing and optimizing a coprocessing system to minimize total annual cost. Feed compositions for fast pyrolysis in each period are determined based on the synergistic effect of copyrolysis of the two biomasses, with operational factors near 100% due to large capital investments in fast pyrolysis and algal growth process.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(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)
