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Article
Energy & Fuels
Xiefei Zhu et al.
Summary: A porous hierarchical biochar was successfully fabricated through molten salt-assisted pyrolysis under different inducing atmospheres and temperatures. It was found that the biochar prepared in the air atmosphere had a higher CO2 adsorption capacity and molten salt recovery. This approach provides a novel and simple method for large-scale preparation of carbon-based adsorbents from biomass waste.
Article
Agricultural Engineering
Xiaobing Cao et al.
Summary: This study investigated the effects of oxidative torrefaction on hemicellulose and the distribution of pyrolysis products. It was found that lower torrefaction temperature and higher oxygen concentration produced solid products with higher heating value. Oxygen concentration also influenced the chemical properties of the torrefied hemicellulose, with lower oxygen content and atomic ratios observed at higher torrefaction temperature. The distribution of pyrolysis products varied with torrefaction conditions, with different temperatures and oxygen concentrations favoring the production of different chemical compounds.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Review
Energy & Fuels
Yongnan Zhang et al.
Summary: Biomass energy has become the fourth largest energy source due to its abundant availability. The main products of biomass pyrolysis are pyrolysis oil and biochar. However, there is still untapped potential in biomass products that deserves further exploration. Research on biomass pyrolysis gas is progressing and reaching a commercial level. It is possible to purify and decoke pyrolysis gas according to demand, and its components can be extracted for other purposes. Therefore, biomass pyrolysis gas has great potential for development.
Article
Engineering, Environmental
Dengyu Chen et al.
Summary: A new method for preparing biochar through co-pyrolysis of heavy fraction of bio-oil (HB) and leached bamboo (LB-bamboo) was proposed in this study. The co-processing of HB and bamboo synergistically improved the yield and higher heating value (HHV) of biochar. The removal of ash and metallic species in bamboo by LB leaching pretreatment led to a more synergistic effect observed during the subsequent co-pyrolysis.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Rui Diao et al.
Summary: With the coupling of torrefaction and KOH impregnation, a fractional process was proposed for the valorization of bio-oil distillation residue (DR). The results showed that low-temperature torrefaction enhanced the pyrolysis rate, while high-temperature torrefaction weakened it. The fractional pretreatment accelerated the reaction rates and directed the product distribution.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Xiefei Zhu et al.
Summary: In this study, N/S dual-doped porous biochar was fabricated from bio-oil refining residue through one-step carbonization-activation combined with in-situ doping. The CO2 adsorption performance and mechanisms of biochar were investigated, and it was found that the biochar exhibited relatively outstanding CO2 adsorption performance and excellent recyclability. This study provides a new perspective for the large-scale preparation of biochar from waste by-products of biomass pyrolysis-refining system for CO2 capture.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Zibo Xu et al.
Summary: In this study, a series of Fe-biochar with distinct Fe/C speciation were produced and their redox reactivity for Cr(VI) and As(III) oxidation/reduction was evaluated. The results showed that the redox performance of Fe-biochar was influenced by the transition of Fe/C speciation, and different Fe-biochar exhibited different oxidation/reduction behaviors under oxic and anoxic conditions. The electron-donating capacity and electron-accepting capacity of Fe-biochar played important roles in its redox reactivity.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Thermodynamics
Xiefei Zhu et al.
Summary: A novel strategy of combining acid pretreatment and co-hydrothermal carbonization was developed to prepare value-added hydrochar from food waste digestate. The combination strategy enhanced the fuel properties of hydrochar, including increasing the heating value and reducing the ash content. Blending with wood waste could obtain a comparable combustion performance of hydrochar with multiple cycles of acid pretreatment.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Review
Green & Sustainable Science & Technology
Md Manik Mian et al.
Summary: This review systematically summarized the latest research on carbon-based catalysts, including synthesis routes, physicochemical properties, and applications in AOPs and ESDs. It also provided scientific insight into various catalytic mechanisms and highlighted the challenges and prospects of this emerging field.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Applied
Mingzhe Sun et al.
Summary: Engineered biochar derived from wood waste pyrolysis in molten salts was developed for efficient CO2/N-2 separation. The production conditions were customized to enhance CO2 adsorption capacity and selectivity. K2CO3-Na2CO3-Li2CO3 biochar showed the highest CO2 capacity and selectivity. These findings demonstrate a new approach to upcycle biowaste into eco-friendly and effective adsorbents.
FUEL PROCESSING TECHNOLOGY
(2022)
Review
Environmental Sciences
Mingjing He et al.
Summary: This review discusses the application of biochar in municipal wastewater treatment, industrial wastewater decontamination, and stormwater management. Biochar can be engineered to target specific contaminants in industrial wastewater treatment and enhance processes in municipal wastewater treatment and stormwater management. The scalability and commercialization of biochar production need to be investigated to maximize environmental, societal, and economic benefits.
NATURE REVIEWS EARTH & ENVIRONMENT
(2022)
Article
Engineering, Environmental
Chao Song et al.
Summary: This study successfully enhanced solar absorptance, cycle stability, and decreased decomposition temperature simultaneously by doping CaCO3 particles, paving the way for the design of high-performance calcium-based materials for next-generation high temperature thermal energy storage systems.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Agricultural Engineering
Mingjing He et al.
Summary: This study investigated the impacts of different pyrolysis conditions and activation methods on the properties of biochar. It found that a temperature of 650 degrees Celsius was effective in forming carbonized structure, while 750 degrees Celsius was critical for the development of a porous structure. Longer pyrolysis duration increased pore volume, and activated biochar had a larger pore volume suitable for high-end applications.
BIORESOURCE TECHNOLOGY
(2021)
Review
Agricultural Engineering
Yuwen Zhou et al.
Summary: This review provides a holistic view of biochar, including its production, applications, and future prospects, with a focus on engineering strategies and development potential. It highlights the promising alternatives of biochar as a cheap source of carbon-based products, and discusses future strategies and ideas for engineering biochar production techniques and application.
BIORESOURCE TECHNOLOGY
(2021)
Review
Engineering, Environmental
Yuqing Sun et al.
Summary: Biochar is a promising carbonaceous material with abundant functional groups and mesoporous structure, showing potential in improving soil fertility, retaining nutrients, enhancing microbial activity, and immobilizing contaminants. The dissolved organic matter (DOM) from biochar plays a key role in soil matrix, microbial community, and fate of contaminants, with both positive and negative effects that are influenced by various factors such as the nature of biochar-derived DOM and environmental conditions. Understanding the long-term stability and interactions of biochar-derived DOM is critical for minimizing the ecological and environmental risks of biochar application.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Hamid Rajabi et al.
Summary: This study investigates the competitive adsorption of mixed volatile organic compounds (VOCs) on biochar, showing that competition for sorption sites leads to a decrease in individual species' sorption capacity while maintaining the overall sorption capacity. Chemical interactions through hydrogen bonds, electrostatic attraction, and pore-filling are found to be the main mechanisms of VOC adsorption on biochar. Additionally, biochar regeneration efficiency is between 88% and 96%, indicating potential formation of permanent bonds during the sorption process.
Article
Chemistry, Analytical
Vijay M. Shinde et al.
Summary: A detailed gas-phase kinetic model was developed for methane pyrolysis involved in CVD/CVI processes and validated against experimental data. The study showed that CH4 pyrolysis proceeds directly without any induction period, and C-2 species are the primary intermediates for the formation of acetylene, ethylene, and benzene.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Thermodynamics
Li Zhang et al.
Summary: The study focused on the use of low-cost and high-efficiency catalysts to remove tar and increase gas yield in the catalytic reforming of biomass pyrolysis volatiles. Different types of activated biochar catalysts were prepared using chemical and physical activators, with varying catalyst to feedstock ratios and catalytic cracking temperatures impacting tar decomposition efficiency and gas yield. The introduction of catalysts altered gas composition and promoted secondary cracking reactions of tar.
Article
Energy & Fuels
Agata Mlonka-Medrala et al.
Summary: This study investigated the pyrolysis of agricultural biomass and found that the quality, yield, and gas component concentration of pyrolytic gas increased with temperature, while the concentration of carbon dioxide decreased. Condensed vapours were found to be rich in phenolic and aromatic compounds.
Article
Chemistry, Physical
Christian Di Stasi et al.
Summary: Highly efficient activated biochar-based catalysts were utilized for steam reforming of slow pyrolysis oil, showing promising performance in terms of conversion and deactivation rate. Despite fast deactivation when using a mixture of organic model compounds, the dual Ni-Co catalysts demonstrated long stability and constant carbon conversion during the actual steam reforming process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Xiefei Zhu et al.
Summary: Enriching high-value chemicals, especially phenols, through the combination of torrefaction pretreatment and fractional condensation in the pyrolysis loop of agricultural and forestry waste is an efficient way to achieve sustainable development. The study showed that torrefaction and pyrolysis loop negatively impacted pyrolysis efficiency and the yield of liquid products, while the condensation efficiency depended on the combined effects of torrefaction and pyrolysis loop. Phenols tended to be enriched in the second condensation stage, with torrefaction significantly increasing the enrichment of phenols in the liquid products by at least 109.44%.
Article
Energy & Fuels
Yingkai Li et al.
Summary: Catalytic pyrolysis with Fe-modified hierarchical ZSM-5 catalysts showed enhanced selectivity towards monoaromatics, which was attributed to the improved acidity and hierarchical structure introduced by alkali treatment and Fe loading. Additionally, the kinetic analysis demonstrated a lower apparent activation energy for the catalytic pyrolysis process.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Chemistry, Physical
Feiqiang Guo et al.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Review
Energy & Fuels
Jian Li et al.
Article
Environmental Sciences
Wei Xiang et al.
Article
Energy & Fuels
Dengyu Chen et al.
Article
Thermodynamics
Xingping Kai et al.
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Thermodynamics
Xiao He et al.
Review
Engineering, Environmental
Wei Chen et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Review
Green & Sustainable Science & Technology
Alireza Saraeian et al.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2019)
Article
Thermodynamics
Ce Sun et al.
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Green & Sustainable Science & Technology
Saleh Al Arni
Article
Thermodynamics
Xingping Kai et al.
ENERGY CONVERSION AND MANAGEMENT
(2017)
Article
Engineering, Environmental
Wei Chen et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2015)
Article
Engineering, Environmental
Guang-Hui Yu et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2011)
