Article
Agricultural Engineering
Bo Wang, Kai Li, Cheng-bo Zhang, Bin Hu, Yan-qin Huang, Ti-peng Wang, Qiang Lu
Summary: This study aimed to improve the production efficiency of levoglucosenone (LGO) from cellulose catalytic pyrolysis by optimizing its ultrastructure. Cellulose was pretreated with Na2CO3 solutions of different concentrations and Amberlyst-15 (A-15) at different temperatures. The effects of pretreatment on cellulose ultrastructure, particularly the degree of polymerization (DP) and crystallinity index (CrI), were investigated. The catalytic pyrolysis experiments revealed that Na2CO3 pretreatment significantly reduced CrI of cellulose and slightly decreased DP. Low Na2CO3 concentration promoted LGO generation by reducing CrI, while high concentration hindered LGO formation due to the transformation of cellulose I & beta; to II. A-15 pretreatment increased CrI and decreased DP with increasing temperature, leading to a gradual decrease in LGO yield. The cellulose pretreated with 1% Na2CO3 solution exhibited the highest LGO yield of 19.76 wt.%, higher than that of raw cellulose (18.04 wt.%), with lower pyrolysis temperature and catalyst dosage.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Analytical
Bo Wang, Kai Li, Dong-hong Nan, Shi-yu Feng, Bin Hu, Ti-peng Wang, Qiang Lu
Summary: A new method for selectively producing levoglucosenone (LGO) from catalytic pyrolysis of waste paper was developed. Combined pre-treatment with ethanol and HCl showed the highest yield of LGO. Using phosphoric acid-activated carbon as the catalyst enabled higher LGO production at lower temperatures. Catalytic pyrolysis of waste paper had advantages over traditional materials in terms of LGO yield and production temperature.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Agricultural Engineering
Shouya Saragai, Shinji Kudo, Jonathan Sperry, U. P. M. Ashik, Shusaku Asano, Jun-ichiro Hayashi
Summary: This work demonstrates that using deep eutectic solvents as catalysts in cellulose pyrolysis can enhance the selectivity and yield of levoglucosenone. The recovered DESs can be reused multiple times, offering potential for high productivity of levoglucosenone.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Bo Wang, Kai Li, Cheng-bo Zhang, Ting Huang, Ti-peng Wang, Qiang Lu
Summary: In this study, regenerated cellulose was prepared using a H3PO4-H2O system with different H3PO4 concentrations. The effects of H3PO4 concentrations on the physicochemical properties of cellulose were investigated. It was found that the H3PO4-H2O system could transform the cellulose crystal form, significantly reduce crystallinity index and hydrogen bond energy, and improve accessibility. These changes made the cellulose more suitable for the selective preparation of liquid fuel oil.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Materials Science, Paper & Wood
Le Qian, Feixiang Xu, Shijun Liu, Gaojin Lv, Liqun Jiang, Tongchao Su, Yitong Wang, Zengli Zhao
Summary: In this study, a magnetic solid acid Fe3O4/C-SO3H600 was synthesized and proven effective in catalyzing the fast pyrolysis of cellulose to yield high amounts of levoglucosenone (LGO). The research also demonstrated that LGO could be produced through further dehydration of levoglucosan.
Article
Chemistry, Applied
Anbang Xu, Xin Huang, Guangchuan Tang, Lei Tang, Changlei Qin, Zhongqing Yang, Jingyu Ran
Summary: In this study, alkali metal-doped phosphotungstic acids were synthesized and used as catalysts for the fast pyrolysis of cellulose to produce levoglucosenone (LGO). The results showed that the LGO yield could be regulated by the acid sites of the catalysts. Cs2.5H0.5PW12O40 exhibited the highest LGO yield, and further enhancement was achieved by modifying Cs2.5H0.5PW12O40 with (NH4)2HPO4.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Materials Science, Paper & Wood
Feixiang Xu, Jiangchen Luo, Liqun Jiang, Zengli Zhao
Summary: This study improved the production of levoglucosan and levoglucosenone from acid-impregnated cellulose through fast pyrolysis. The impregnation of acid reduced the activation energy and reaction temperature, significantly increasing the yield of levoglucosan. The study demonstrated the potential for industrial production of levoglucosan and levoglucosenone from cellulose at low temperatures.
Review
Polymer Science
Melissa K. Stanfield, Rhiannon S. Terry, Jason A. Smith, Stuart C. Thickett
Summary: This review focuses on the use of levoglucosan (LGA) and levoglucosenone (LGO) obtained from cellulose pyrolysis in materials synthesis. It presents various types of polymers, including polyesters, polysaccharides, metathesis-based polymers, and photopolymerized thermosets. The sustainability and environmental impact of these syntheses are also discussed.
Article
Chemistry, Applied
Xin Huang, Shinji Kudo, Shusaku Asano, Jun-ichiro Hayashi
Summary: This study found that using DMSO as a solvent in combination with Amberlyst 70 as a solid acid catalyst can significantly increase the yield of LGO, with further improvement achieved by in-situ removal of water. Additionally, experiments using bio-oil as feedstock showed that heavier saccharides can also serve as a source of LGO without inhibiting the conversion of LGA.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Applied
Haiping Yang, Shuaishuai Lei, Kun Xu, Yang Fang, Xu Chen, Yingquan Chen, Xianhua Wang, Hanping Chen
Summary: The study found that under the catalytic action of sulfonated carbon, the optimal conditions for producing LGO were a temperature of 400 ℃ and a mass ratio of 1:1.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Haiping Yang, Shuaishuai Lei, Kun Xu, Yang Fang, Xu Chen, Yingquan Chen, Xianhua Wang, Hanping Chen
Summary: A new method for the efficient preparation of levoglucosenone (LGO) using sulfonated carbon catalyst was proposed in this study. The results showed that the highest selectivity of LGO was achieved at 400 degrees C and a mass ratio of 1:1 for glucose/sulfonated carbon catalyst. Density functional theory calculations demonstrated that sulfonated carbon catalyst facilitated the formation of LGO by altering the reaction pathway.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Agricultural Engineering
Ji Liu, Hao Fu, Bin Hu, Kai Li, Li Zhao, Bing Zhang, Qiang Lu, Wan-yu Fu
Summary: This study utilized a modified catalyst with a stable mesoporous structure to selectively produce LGO by influencing the reactions of cellulose. Under optimized conditions, the catalyst exhibited high conversion efficiency of cellulose and maintained stable catalytic activity.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Agricultural Engineering
Oscar Oyola-Rivera, Jiayue He, George W. Huber, James A. Dumesic, Nelson Cardona-Martinez
Summary: This study investigated the catalytic conversion of cellulose to levoglucosenone (LGO) using a combination of dilute sulfuric acid and propylsulfonic acid functionalized SBA-15 (PS-SBA-15) in tetrahydrofuran (THF). The addition of small amounts of liquid acid catalyst such as sulfuric acid was found to complement the use of solid acid catalyst for cellulose conversion, leading to an increase in LGO yield. The main role of the solid Bronsted acid catalyst was to dehydrate the generated levoglucosan (LGA) into LGO, demonstrating a more environmentally friendly approach for LGO production.
BIOMASS & BIOENERGY
(2022)
Article
Chemistry, Analytical
Cristian Torri, Lorenzo Favaro, Andrea Facchin, Yusuf Kucukaga, Alessandro Girolamo Rombola, Daniele Fabbri
Summary: This study proposes a method based on Chemical Oxygen Demand calculation to evaluate the maximum potential of bioavailable products from lignocellulosic feedstock through fast pyrolysis. By reviewing relevant literature, it was found that fast pyrolysis can deliver bioavailable products with a yield of 30-40%. Innovative combination of pre-treatment and fast pyrolysis can convert more than 60% of the feedstock chemical energy into bioavailable products.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Agricultural Engineering
Miao Wang, Shuai Zhang, Xiangjun Liu, Yayun Ma, Junqi Wang
Summary: A study was conducted on the influence of alkali and alkaline earth metal (AAEM) salts with two different anions (Cl- and CH3COO-) on the catalytic pyrolysis of cellulose to produce levoglucosan (LG), bio-oil, and biochar. The thermogravimetric analyzer (TGA) and lab-scale fixed-bed reactor system were used to determine the thermal degradation process and pyrolysis products. The addition of AAEM salts significantly increased the yield of biochar, while decreasing the output of LG and bio-oil. This study provided important insights into the pathway of cellulose pyrolysis and the utilization of biomass.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Physical
Karolina Kordek, Huajie Yin, Piotr Rutkowski, Huijun Zhao
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Physical
Karolina Kordek, Lixue Jiang, Kaicai Fan, Zhengju Zhu, Li Xu, Mohammad Al-Mamun, Yuhai Dou, Shan Chen, Porun Liu, Huajie Yin, Piotr Rutkowski, Huijun Zhao
ADVANCED ENERGY MATERIALS
(2019)
Article
Environmental Sciences
Jakub Mokrzycki, Izabela Michalak, Piotr Rutkowski
Summary: This study found that biochar derived from waste tomato leaves and stems has good adsorption effect on Cr(III) ions in aqueous solution, especially with the increase of temperature. The mineral matter in biochar plays a key role in the removal of Cr(III) ions, mainly through precipitation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Jakub Mokrzycki, Izabela Michalak, Piotr Rutkowski
Summary: The study on utilizing freshwater hornwort and macroalga to produce biochars as Cr(III) ion sorbents reveals that the pyrolysis temperature and mineral matter content have a crucial impact on the sorption capacities of the biochars.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Physical
Karolina Kordek-Khalil, Aleksander de Rosset, Piotr Rutkowski
APPLIED SURFACE SCIENCE
(2020)
Article
Green & Sustainable Science & Technology
Wlodzimierz Szczepaniak, Monika Zablocka-Malicka, Rafal Wysokinski, Piotr Rutkowski
Article
Engineering, Environmental
Jakub Mokrzycki, Ewa Lorenc-Grabowska, Karolina Kordek-Khalil, Piotr Rutkowski
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Agricultural Engineering
Jakub Mokrzycki, Malgorzata Gazinska, Monika Fedyna, Robert Karcz, Ewa Lorenc-Grabowska, Piotr Rutkowski
BIOMASS & BIOENERGY
(2020)
Review
Chemistry, Physical
Katarzyna Wal, Piotr Rutkowski, Wojciech Stawinski
Summary: Reduction of air pollution is a major priority in today's society, with a focus on developing new adsorbents to reduce various air pollutants. Clay minerals have garnered attention for their unique structure and good adsorption properties in air remediation, showcasing their potential in mitigating air pollution.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Environmental
Grzegorz Pasternak, Natalia Ormeno-Cano, Piotr Rutkowski
Summary: The study introduces a new approach for enhancing the lifetime and power output of ceramic microbial fuel cells by utilizing recycled polypropylene nonwoven fabric, demonstrating the strong antifouling effects of ceramic modification. This method successfully increases the long-term efficiency of ceramic MFCs through recycling polypropylene, which is one of the least recycled plastics globally.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Multidisciplinary Sciences
Karolina Kordek-Khalil, Dawid Janas, Piotr Rutkowski
Summary: The study focuses on using single-walled carbon nanotubes assembled into free-standing films as HER electrodes, which undergo activation and activity enhancement. Results suggest that the partial oxidation of iron nanoparticles encapsulated in SWCNTs is the major contributor to the increased activity. The material, composed of earth-abundant elements, shows exceptional stability with no activity loss for 200 hours.
SCIENTIFIC REPORTS
(2021)
Article
Agricultural Engineering
Jakub Mokrzycki, Aneta Magdziarz, Piotr Rutkowski
Summary: This study evaluated two different pathways for utilizing Miscanthus giganteus biochar: for the production of solid biofuels and as a precursor of activated carbons. Charcoal was produced through pyrolysis at different temperatures. The resulting biochar and raw biomass were characterized and the thermal behavior and properties were evaluated. Activated carbon was obtained through chemical activation and its surface properties were investigated. The study found that both biochar and activated carbon had potential applications in water purification and energy utilization.
BIOMASS & BIOENERGY
(2022)
Article
Thermodynamics
Grzegorz Pasternak, Aleksander de Rosset, Piotr Rutkowski
Summary: This study proposes a horizontal microbial fuel cell system capable of synthesizing biosurfactants, with the quantity of biosurfactants directly correlated with power production. Waste rapeseed oil is used as a sustainable fuel for driving both processes. The horizontal MFC system shows a 104.7% increase in electricity production, reaching 4.84 W m- 3, accompanied by an increase in biosurfactant production.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Izabela Walendzik, Karolina Kordek-Khalil, Piotr Rutkowski
Summary: Hybrid electrodes have been explored as a promising alternative to noble-metal-based electrocatalysts for hydrogen production by water splitting. In this study, a noble-metal-free electrode composed of an oxidized carbon cloth with an electrodeposited bimetallic film was proposed. The optimized electrode achieved high bifunctional electrocatalytic activity in hydrogen and oxygen evolution from alkaline solution, with low overpotentials and a short synthesis time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Karolina Kordek, Ewa Lorenc-Grabowska, Piotr Rutkowski
SUSTAINABLE ENERGY & FUELS
(2020)
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)
