One‐Step Thermochemical Conversion of Biomass Waste into Superhydrophobic Carbon Material by Catalytic Pyrolysis

In view of the constant search for new sources of renewable energy, the particulate agro-industrial waste reuse emerges as an advantageous alternative. However, despite the advantages of using the biomass as an energy source, there is still strong resistance as the large-scale replacement of petroleum products due to the lack of scientifically proven efficient conversion technologies. In this context, the pyrolysis is presented as one of the most widely used thermal decomposition processes. The knowledge of aspects of chemical kinetics, thermodynamics these will, heat and mass transfer, are so important, since influence the quality of the product. This paper presents a kinetic study of slow pyrolysis of coffee grounds waste from dynamic thermogravimetric experiments (TG), using different powder catalysts. The primary thermal decomposition was described by the one-step reaction model, which considers a single global reaction. The kinetic parameters were estimated using nonlinear regression and the differential evolution method. The coffee ground waste was dried at 105°C for 24 hours. The sample in nature was analyzed at different heating rates, being 10, 15, 20, 30 and 50 K/min. In the catalytic pyrolysis, about 5% (w/w) of catalyst were added to the sample, at a heating rate of 30 K/min. The results show that the one-step model does not accurately represent the data of weight loss (TG) and its derivative (DTG), but can do an estimative of the activation energy reaction, and can show the differences caused by the catalysts. Although no one can say anything about the products formed with the addition of the catalyst, it would be necessary to micro-pyrolysis analysis, we can say the influence of the catalyst in the samples, based on the data obtained in thermogravimetric tests.

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Preparation and property of N-doped porous carbon material by one-step pyrolysis of protein-rich algal biomass

Journal of Analytical and Applied Pyrolysis ◽

10.1016/j.jaap.2021.105221 ◽

2021 ◽

pp. 105221

Author(s):

Yamin Hu ◽

Kaihan Xie ◽

Haiwen Wang ◽

Chuan Yuan ◽

Bin Cao ◽

...

Keyword(s):

Porous Carbon ◽

Carbon Material ◽

Algal Biomass ◽

Porous Carbon Material ◽

One Step ◽

Protein Rich

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Non-isothermal kinetics evaluation of buriti and inaja seed biomass waste for pyrolysis thermochemical conversion technology

Biomass Conversion and Biorefinery ◽

10.1007/s13399-021-01922-y ◽

2021 ◽

Author(s):

Vanuza O. Santos ◽

Rayanne O. Araujo ◽

Flaviana C. P. Ribeiro ◽

Leandro S. Queiroz ◽

Mariana N. Guimarães ◽

...

Keyword(s):

Isothermal Kinetics ◽

Thermochemical Conversion ◽

Biomass Waste ◽

Seed Biomass ◽

Conversion Technology

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Oxidation and removal of As(iii) from soil using novel magnetic nanocomposite derived from biomass waste

Environmental Science Nano ◽

10.1039/c8en01257a ◽

2019 ◽

Vol 6 (2) ◽

pp. 478-488 ◽

Cited By ~ 9

Author(s):

Jianghu Cui ◽

Qian Jin ◽

Yadong Li ◽

Fangbai Li

Keyword(s):

Magnetic Nanocomposite ◽

Pyrolysis Process ◽

Biomass Waste ◽

One Step

A novel biomass-derived magnetic nanocomposite, named BMN, was fabricated via one-step pyrolysis process.

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Thermal behavior of crosslinking polystyrene resin to carbon material by one-step carbonization

Journal of Porous Materials ◽

10.1007/s10934-019-00808-9 ◽

2019 ◽

Vol 27 (1) ◽

pp. 249-261 ◽

Cited By ~ 1

Author(s):

Tianming Nie ◽

Zhangyu Yuan ◽

Shuang Yin ◽

Weiran Tu ◽

Weilin Yan ◽

...

Keyword(s):

Thermal Behavior ◽

Carbon Material ◽

One Step ◽

Polystyrene Resin

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Zeolite Supported Bimetallic Catalyst System: The Effect of Metal Loading for Catalytic Pyrolysis of Jatropha Residue

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.751.494 ◽

2017 ◽

Vol 751 ◽

pp. 494-499

Author(s):

Vituruch Goodwin ◽

Phanwatsa Amnaphiang ◽

Pimpreeya Thungngern ◽

Kong Kah Shin ◽

Parncheewa Udomsap ◽

...

Keyword(s):

Bimetallic Catalysts ◽

Catalytic Pyrolysis ◽

Bimetallic Catalyst ◽

Supported Catalysts ◽

Acid Sites ◽

One Step ◽

Step Loading ◽

Loading Sequence ◽

Xrd Patterns ◽

The One

Two transition metals were loaded on H-ZSM-5 zeolite to produce bimetallic zeolite supported catalysts for catalytic pyrolysis reaction. Ni and Co metal were loaded on H-ZSM-5 via wet impregnation method. The loading sequence was applied using one-step and two-step loading method. The different loading sequence affect surface properties of catalyst and catalytic activity in pyrolysis reaction. The bimetallic catalysts were prepared at Ni+Co metal loading content of 10+10 wt% (Ni:Co=1:1) to 10+20 wt% (Ni:Co=1:2 or 2:1). All bimetallic catalysts supported on H-ZSM-5 were calcined and characterized by X-ray Diffraction (XRD), Surface area analysis (BET) and Temperature Programmed Desorption of ammonia (NH3-TPD). The XRD patterns of bimetallic zeolite supported catalysts revealed that loading of two metals at high content affect crystalline structural of ZSM-5 support. All XRD patterns illustrated peaks characteristic of ZSM-5, cobalt oxide and nickel oxide. The NH3-TPD results showed number of acid sites of the catalyst which revealed that the acid sites of ZSM-5 support was weakened with transition metal added. The two-step loading of 10+20 wt% metals on ZSM-5 reduced the peak intensities of NH3 desorption due to the metal particles aggregate on acid sites of ZSM-5. The two-step 10+20 wt% bimetallic catalysts has the lowest surface acidity, followed by the one-step 10+20 wt%, the two-step 10+10 wt% and the one-step 10+10 wt% bimetallic catalysts, respectively. Jatropha residue was used for catalytic pyrolysis study. Jatropha residue and bimetallic catalyst was pyrolyzed at 500 °C in a pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The product vapor was analyzed by GC/MS for the different groups of organic products such as fatty acid, aldehydes, ketones, aliphatic hydrocarbons, aromatic hydrocarbons and nitrogen compounds. The product from catalytic pyrolysis of jatropha residue with bimetallic zeolite supported catalysts enhance deoxygenation reaction that resulted in high aliphatic and aromatic hydrocarbons product. The one-step loading at ratio Ni:Co = 1:1 (10+10 wt%) gave the highest hydrocarbons product yield at 57.81%.

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Bimetallic sulfide based on various carbon materials for supercapacitors

E3S Web of Conferences ◽

10.1051/e3sconf/202125701075 ◽

2021 ◽

Vol 257 ◽

pp. 01075

Author(s):

YaoChen Song ◽

Xinran Li ◽

Junchao Wang ◽

Mengqiang Wu ◽

Jiaxuan Liao

Keyword(s):

Hybrid Material ◽

Carbon Material ◽

Carbon Materials ◽

Specific Capacity ◽

Carbon Composite ◽

Electrochemical Process ◽

Double Layer Capacitor ◽

One Step ◽

Ion Attachment ◽

Bimetallic Sulfide

The NiCo2S4/C hybrid material was successfully prepared by a simple one-step hydrothermal method. Carbon composite increases the specific surface area of the material and provides more ion attachment points during the electrochemical process. Conducive to the ion transportation and transfer, the composition of carbon material greatly improves the conductivity of the hybrid material. Electric double-layer capacitor materials can accept transferred ions faster than pseudocapacitor materials, enable the hybrid materials better adapt to intensity current changes. Compared with a single carbon material or a pseudocapacitance material, it has a higher specific capacity. This discovery is of great significance to the research of pseudocapacitive materials and supercapacitors.

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Impact of Pretreatment on Hydrothermally Carbonized Spruce

Energies ◽

10.3390/en13112984 ◽

2020 ◽

Vol 13 (11) ◽

pp. 2984

Author(s):

Anna Partridge ◽

Ekaterina Sermyagina ◽

Esa Vakkilainen

Keyword(s):

Treated Wood ◽

Hydrothermal Carbonization ◽

Proximate Analysis ◽

Thermochemical Conversion ◽

Energy Yield ◽

Strongly Correlated ◽

Mass Yield ◽

Biomass Waste ◽

Heating Value ◽

Lignin Extraction

Upgrading biomass waste streams can improve economics in wood industries by adding value to the process. This work considers use of a hydrothermal carbonization (HTC) process for the residual feedstock after lignin and hemicelluloses extraction. Batch experiments were performed at 200–240 °C temperatures and three hours residence time with an 8:1 biomass to water ratio for two feedstocks: Raw spruce and spruce after lignin extraction. The proximate analysis and heating value showed similar results for both feedstocks, indicating that the thermochemical conversion is not impacted by the removal of lignin and hemicelluloses; the pretreatment processing slightly increases the heating value of the treated feedstock, but the HTC conversion process produces a consistent upgrading trend for both the treated and untreated feedstocks. The energy yield was 9.7 percentage points higher for the treated wood on average across the range temperatures due to the higher mass yield in the treated experiments. The energy densification ratio and the mass yield were strongly correlated with reaction temperature, while the energy yield was not. Lignocellulosic composition of the solid HTC product is mainly affected by HTC treatment, the effect of lignin extraction is negligible.

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Preparation and properties of porous carbon material containing magnesium oxide

Polish Journal of Chemical Technology ◽

10.2478/v10026-011-0047-0 ◽

2011 ◽

Vol 13 (4) ◽

pp. 42-46 ◽

Cited By ~ 8

Author(s):

Jacek Przepiórski ◽

Adam Czyżewski ◽

Joanna Kapica ◽

Miguel de la Casa-Lillo

Keyword(s):

Magnesium Oxide ◽

Porous Carbon ◽

Carbon Material ◽

Ethylene Terephthalate ◽

Porous Carbon Material ◽

Preparation Process ◽

Poly Ethylene Terephthalate ◽

One Step ◽

Textural Parameters ◽

Poly Ethylene

Preparation and properties of porous carbon material containing magnesium oxide Porous carbons loaded with magnesium oxide were prepared through one-step process. Poly(ethylene terephthalate) and natural magnesite were used as carbon source and MgO precursor, respectively. An impact of a temperature and relative amounts of raw components used for preparations on the textural parameters of resulting hybrid materials is presented and discussed. As found, pore structure parameters tend to decrease along with MgO loading and temperature used during preparation process. Micropore area is the parameter being reduced primarily.

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