Thermal and co-pyrolysis of rubber seed cake with waste polystyrene for bio-oil production
In this study, biofuels production through thermal and co-pyrolysis of rubber seed cake (RSC) with waste polystyrene (PS) using semi-batch reactor was investigated. Thermogravimetric analysis (TGA) of RSC at heating rate of 10 °C/min showed that R50 value as 1.87 %/min at about 361.84 °C. Effects of pyrolysis temperature (350 °C – 600 °C) and heating rate (10 °C/min–40 °C/min) on product distribution (liquid, gas and bio-char) were considered. During thermal decomposition of RSC, the temperature significantly affected the yield and ...
Source: Journal of Analytical and Applied Pyrolysis - March 16, 2019 Category: Chemistry Source Type: research

Effect of steam on the transformation of sulfur during demineralized coal pyrolysis
This study focused on the effect of steam on the transformation of sulfur during pyrolysis of demineralized coal in a horizontal tube furnace within the range of temperatures from 300 to 800 °C. The main sulfur-containing products in the resulting pyrolysis gases including H2S, SO2, and COS were quantitatively measured using ion chromatography combined with Fourier-transform infrared spectroscopy gas analyzer. The transformation of pyrite in char was assessed based on X-ray diffraction, while the organic sulfur was determined using both an infrared sulfur analyzer and X-ray photoelectron spectroscopy. The experi...
Source: Journal of Analytical and Applied Pyrolysis - March 16, 2019 Category: Chemistry Source Type: research

Enhanced bio-oil deoxygenation activity by Cu/zeolite and Ni/zeolite catalysts in combined in-situ and ex-situ biomass pyrolysis
Publication date: Available online 14 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Ravinder Kumar, Vladimir Strezov, Emma Lovell, Tao Kan, Haftom Weldekidan, Jing He, Sayka Jahan, Behnam Dastjerdi, Jason ScottAbstractThe presence of oxygenated compounds in pyrolytic oil makes it highly acidic and unsuitable energy source for real-world applications. In-situ and ex-situ catalytic pyrolysis have been considered the most significant approaches to convert these oxygenated compounds into hydrocarbons or less oxygenated compounds, thereby increasing the carbon and hydrogen content in the bio-oil and im...
Source: Journal of Analytical and Applied Pyrolysis - March 15, 2019 Category: Chemistry Source Type: research

Biomass Carbonization - An Experimental Comparison between Pyrolysis and Hydrothermal Carbonization
Publication date: Available online 14 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Catalina Rodriguez Correa, Tobias Hehr, Yannik Rauscher, Muhammad Jamal Alhnidi, Andrea KruseAbstractCarbonization technologies such as hydrothermal carbonization (HTC) and pyrolysis have become an important instrument to convert biomass into products with a high-added value. In each carbonization process, biomass is decomposed but the process conditions and reaction mechanisms are considerably different. Consequently, the products have also different properties. In addition to the process conditions, the biomass c...
Source: Journal of Analytical and Applied Pyrolysis - March 15, 2019 Category: Chemistry Source Type: research

Preparation of Fe-char catalyst from tank cleaning oily sludge for the catalytic cracking of oily sludge
In this study, a novel method was proposed that Fe-char was prepared from oily sludge and was further applied to the catalytic cracking of heavy oil in oily sludge. The char exhibited a porous structure and the inherent iron oxides were directly reduced to metallic iron (Fe°) at 900 °C after carbonization. The catalytic effects of the char prepared at 600 °C (Char600) and 900 °C (Char900) were compared in terms of oil conversion efficiency and gas yield. The oil conversion efficiency over Char900 was higher than that over Char600 at 600 °C (90.2% vs. 80.1%). Meanwhile, the polyaromatics in the oil produ...
Source: Journal of Analytical and Applied Pyrolysis - March 12, 2019 Category: Chemistry Source Type: research

A review on deoxygenation of triglycerides for jet fuel range hydrocarbons
Publication date: Available online 8 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Saima Khan, Andrew Ng Kay Lup, Khan Muhammad Qureshi, Faisal Abnisa, Wan Mohd Ashri Wan Daud, Muhamad Fazly Abdul PatahAbstractProduction of bio-jet fuel from triglycerides (TGs) based vegetable oils have recently received increased attention from research and industries because of its renewability and environmental benefits. Catalytic deoxygenation (DO) is a suitable way to produce bio-jet fuel from TGs. Presently, the main challenges faced by DO are the optimized selection of feedstocks, catalysts, reaction pathwa...
Source: Journal of Analytical and Applied Pyrolysis - March 9, 2019 Category: Chemistry Source Type: research

Application of laser-based diagnosis for characterization of the influence of inorganics on the slow pyrolysis of woody biomass
Publication date: Available online 9 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): H. Almuina-Villar, N. Lang, A. Anca-Couce, J. Röpcke, F. Behrendt, A. Dieguez-AlonsoAbstractThe influence of inorganic species content on the slow pyrolysis of thermally thick wood particles was investigated with the application of laser-based spectroscopy techniques. Infrared laser absorption and laser-induced fluorescence were used to characterize, on-line and in-situ, the release of permanent gases (CO and CH4) and the formation of species emitting fluorescence, respectively. These advanced methods were comb...
Source: Journal of Analytical and Applied Pyrolysis - March 9, 2019 Category: Chemistry Source Type: research

Organic sulfur compositions and distributions of tars from the pyrolysis of solvent pretreatment vitrinite of high sulfur coal
Publication date: Available online 8 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Qiuxiang Yao, Ming Sun, Junwen Gao, Rucheng Wang, Yujuan Zhang, Long Xu, Xiaoxun MaAbstractThe low temperature solvent pretreated experiments of vitrinite sorted out from Permo-carboniferous high organic sulfur fine coal were performed to research the effects of solvent pretreatment on the characteristics of pyrolysis products and the composition and distribution of sulfur in the produced coal tar. Six solvents containing hot water, ethanol solution, 1, 2-propanediol solution, KOH solution, KOH-ethanol solution and ...
Source: Journal of Analytical and Applied Pyrolysis - March 8, 2019 Category: Chemistry Source Type: research

Detailed structural elucidation of different lignocellulosic biomass types using optimized temperature and time profiles in fractionated Py-GC/MS
Publication date: Available online 6 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): M. González Martínez, T. Ohra-aho, T. Tamminen, D. da Silva Perez, M. Campargue, C. DupontAbstractFractionated pyrolysis coupled to gas chromatography and mass spectrometry experiments (Py-GC/MS) were carried out on eight woody and agricultural biomasses, including beech, poplar, pine forest residues, Scot Pine bark, reed canary grass, corn cob, grape seed cake and wheat straw. The selected temperature and duration for each fractionated pyrolysis step allowed separating the volatile pyrolysis products ...
Source: Journal of Analytical and Applied Pyrolysis - March 8, 2019 Category: Chemistry Source Type: research

Staged condensation of oil shale pyrolysis volatiles for preliminary dedust and fractionation of shale oil
Publication date: Available online 6 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Hua Zhang, Ze Wang, Jingdong He, Ermei Liu, Wenli Song, Songgeng LiABSTRACTHigh dust content in shale oil is a big trouble for fluidized bed pyrolysis process. The staged condensation is proposed for on-line preliminary dedust of shale oil with coarse fractionation of oil components. Oil shale powders are continuously pyrolyzed using a lab-scale fluidized bed and the produced volatiles are condensed in three stages with reducing temperatures. The effect of the first stage condensing unit (U1) temperature on the dist...
Source: Journal of Analytical and Applied Pyrolysis - March 8, 2019 Category: Chemistry Source Type: research

Evaluating quantitative determination of levoglucosan and hydroxyacetaldehyde in bio-oils by gas and liquid chromatography
Publication date: Available online 6 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): P.S. Marathe, A. Juan, Xun Hu, R.J.M Westerhof, S.R.A. KerstenAbstractThis communication evaluates the suitability of gas and liquid chromatography for the quantification of levoglucosan and hydroxyacetaldehyde in bio-oils. It was found that both techniques can principally determine levoglucosan quantitatively in cellulose/biomass derived bio-oils. However, it is also shown that oligo-anhydrosugars present in the bio-oils undergo depolymerisation to levoglucosan during gas chromatography, resulting in an overestimat...
Source: Journal of Analytical and Applied Pyrolysis - March 6, 2019 Category: Chemistry Source Type: research

Catalytic pyrolysis of waste packaging polyethylene using AlCl3-NaCl eutectic salt as catalyst
Publication date: Available online 28 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Jian Su, Changqing Fang, Mannan Yang, Caiyin You, Qilang Lin, Xing Zhou, Hang LiAbstractCatalytic pyrolysis is an attractive and promising way to recycle waste plastics. In this paper, AlCl3-NaCl eutectic salt was used as the catalyst to pyrolyze waste polyethylene (WPE), and its catalytic activity was studied. Thermogravimetry (TG), gas chromatography-mass spectrometer (GC-MS) and Fourier transform infrared spectroscopy (FTIR) were applied to investigate the pyrolysis behavior of WPE in the presence of AlCl3-Na...
Source: Journal of Analytical and Applied Pyrolysis - March 5, 2019 Category: Chemistry Source Type: research

Volatile matter release from coal at different heating rates –experimental study and kinetic modelling
Publication date: Available online 1 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Krzysztof M. Czajka, Norbert Modliński, Anna M. Kisiela, Reshendren Naidoo, Sandile Peta, Bonny NyangwaAbstractThe presented paper examines the impact of heating rate on the yield of volatiles and kinetic parameters describing the devolatilization process of sub-bituminous coal. The behaviour of three coals is investigated with the use of two experimental research methods i.e. Thermogravimetric Analysis (TG) and Drop Tube Furnace (DTF). Network models such as FG-DVC and FLASHCHAIN will also used to derived devolati...
Source: Journal of Analytical and Applied Pyrolysis - March 5, 2019 Category: Chemistry Source Type: research

Characterization and comparison of pyrolysis products from fast pyrolysis of commercial Chlorella vulgaris and cultivated microalgae
Publication date: Available online 2 March 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Farid Sotoudehniakarani, Abdulbaset Alayat, Armando G. McDonaldAbstractChlorella vulgaris algae is comprised of a complex mixture of compounds such as carbohydrates, lipids, and proteins and is a suitable feedstock for biofuels. The aim of this study was to convert commercial and a low cost field cultivated algae, via pyrolysis, to produce bio-oil, synthesis gas, and biochar products. The thermal degradation behaviour of algae was investigated by thermogravimetric analysis. Proximate, ultimate, fatty acid methyl est...
Source: Journal of Analytical and Applied Pyrolysis - March 5, 2019 Category: Chemistry Source Type: research

Co-liquefaction of low-lipid microalgae and starch-rich biomass waste: the interaction effect on product distribution and composition
Publication date: Available online 27 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Jingjing Wang, Xiaowei Peng, Xinfei Chen, Xiaoqian MaAbstractThe co-hydrothermal liquefaction (HTL) of low-lipid microalgae (MA) mixed with starch-rich biomass waste (sweet potato residue, SPR) was performed. To explore the interaction effect at different mass ratios of MA/SPR, the distribution and composition of HTL products were analyzed. Results showed that although the addition of SPR did not obviously promote the formation of bio-crude by Maillard reaction between starch and protein, the generation of bio-c...
Source: Journal of Analytical and Applied Pyrolysis - February 28, 2019 Category: Chemistry Source Type: research

Study on catalytic pyrolysis of eucalyptus to produce aromatic hydrocarbons by Zn-Fe Co-Modified HZSM-5 catalysts
Publication date: Available online 23 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Jiachen Xu, Yanfen Liao, Yan Lin, Xiaoqian Ma, Yu ZhaoshengAbstractEucalyptus was pyrolyzed over metal modified HZSM-5 for producing aromatics. The untreated HZSM-5 catalyst and Zn-Fe co-modified HZSM-5 were evaluated by XRD, SEM, NH3-TPD and N2 physical adsorption. The PY-GC/MS and TGA methods were used to perform pyrolysis of eucalyptus, exploring the product distribution of eucalyptus catalytic pyrolysis and the coking characteristics of the catalysts. Experiment resulted that the products yields and composit...
Source: Journal of Analytical and Applied Pyrolysis - February 25, 2019 Category: Chemistry Source Type: research

Pyrolysis of Millettia (Pongamia) pinnata waste for bio-oil production using a fly ash derived ZSM-5 catalyst
Publication date: Available online 23 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Kanit Soongprasit, Viboon Sricharoenchaikul, Duangduen AtongAbstractFast pyrolysis of Millettia (Pongamia) pinnata waste (PPW) was performed using a scaled-up 180-cm drop-tube pyrolyzer with fly ash (FA)-derived ZSM-5 (FA-ZSM-5) as a deoxygenation and denitrogenation catalyst to upgrade the liquid products. The oil from P. pinnata is typically extracted to produce bio-fuel leaving a large amount of PPW that has some 20% (v/v) oil content. Since the PPW is inedible, due to its toxicity from karanjin and di-ketone...
Source: Journal of Analytical and Applied Pyrolysis - February 25, 2019 Category: Chemistry Source Type: research

Degradation of wood by UV light: a study by EGA-MS and Py-GC/MS with on line irradiation system
Publication date: Available online 22 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Marco Mattonai, Atsushi Watanabe, Ai Shiono, Erika RibechiniAbstractUV degradation of wood is an important phenomenon that entails loss of aesthetic and mechanic properties. The changes are usually studied with artificial ageing followed by spectroscopy, and focus on colour changes. Analytical pyrolysis coupled with gas chromatography-mass spectrometry (Py-GC/MS) and evolved gas analysis-mass spectrometry (EGA-MS) are powerful tools for wood characterisation, but the change in pyrolytic behaviour of wood after U...
Source: Journal of Analytical and Applied Pyrolysis - February 23, 2019 Category: Chemistry Source Type: research

Biogenic oxygenates in lignite pyrolysis tars and their thermal cracking revealed by two-dimensional gas chromatography/time-of-flight mass spectrometry (GC×GC-TOFMS)
Publication date: Available online 20 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Feng Mao, Haojie Fan, Jie WangAbstractGC×GC-TOFMS was applied to characterize oxygenates in five lignite tars, which were produced from the pyrolysis of a low-maturity lignite in a two-stage reactor with thermal cracking of volatile matter at a different temperature (500–800 °C) and without thermal cracking. The analysis of the two tars obtained by no cracking and cracking at 500 °C identified 349 and 469 oxygenates with a higher reliability, respectively. Those oxygenates embra...
Source: Journal of Analytical and Applied Pyrolysis - February 21, 2019 Category: Chemistry Source Type: research

Pressurized pyrolysis of sewage sludge: Process performance and products characterization
In this study a series of pyrolysis experiments were carried out at elevated pressure of 0.1, 1.0, 3.0, 5.0, 7.0 MPa to treat SS. The effect of pressure on pyrolysis product yields, syngas composition, properties of tar and char were systematically investigated. The results indicated that the elevated pyrolysis pressure promoted the tar cracking to produce more energy-dense syngas. As for syngas composition, when the pressure was increased from 0.1 MPa to 7.0 MPa, noncombustible CO2 content decreased and simultaneously energy-dense CH4 content increased as well as the lower heating value (LHV) of synga...
Source: Journal of Analytical and Applied Pyrolysis - February 17, 2019 Category: Chemistry Source Type: research

Exploring the composition of macromolecular organic matter in Arctic Ocean sediments under a changing sea ice gradient
In this study pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) has been used to quantify the solvent-insoluble component of marine organic matter in surface sediments to gain a more holistic understanding of the macromolecular composition at five stations along a south to north transect in the Arctic Barents Sea, east of Svalbard (depths 288 – 334 m.b.s.l). Two methods were compared to identify the effectiveness of rapid screening, in contrast to grouping similar pyrolysis products. There were changes in macromolecular composition of marine surface sediments across the S-N transect using both methods,...
Source: Journal of Analytical and Applied Pyrolysis - February 15, 2019 Category: Chemistry Source Type: research

Comparati563ve study of pyrolysis characteristics of bamboo powder and grape vine by anaerobic fermentation pretreatment
Publication date: Available online 13 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Tipeng Wang, Yinong Ai, Hang Li, Qiang LuAbstractTo explore the different effects of anaerobic fermentation on pyrolysis behaviors of grass and xylophyta, bamboo powder (BP) and grape vine (GV) were pretreated and pyrolysis characteristics were studied by TGA and Py-GC/MS. With increasing pretreatment time from 0 to 20 days, cellulose contents in BP decreased from 51.47 to 48.52 wt. % and extractives contents increased from 5.58 to 11.57 wt. %. Only the extractives of GV were degraded from17.92 to 12.05 wt. %. T...
Source: Journal of Analytical and Applied Pyrolysis - February 14, 2019 Category: Chemistry Source Type: research

Catalytic performance of scrap tyre char for the upgrading of eucalyptus pyrolysis derived bio-oil via cracking and deoxygenation
Publication date: Available online 11 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Qiaoqiao Zhou, Alireza Zarei, Anthony De Girolamo, Yuxin Yan, Lian ZhangAbstractCatalytic pyrolysis of biomass is one of the potential routes to convert lignocellulose material to high-value bio-fuels. In this paper, we explored the use of Zn-rich scrap tyre char, a low-value byproduct from the pyrolysis of waste scrap tyre as a catalyst for in-situ upgrading of crude bio-oil derived from the pyrolysis of eucalyptus. Experiments were performed in a two-stage fixed-bed reactor at 500 °C with a catalyst...
Source: Journal of Analytical and Applied Pyrolysis - February 12, 2019 Category: Chemistry Source Type: research

Thermal conversion behaviors and products of spent mushroom substrate in CO2 and N2 atmospheres: kinetic, thermodynamic, TG and Py-GC/MS analyses
This study aims at characterizing pyrolysis/gasification behaviors and products of spent mushroom substrate (SMS) in the CO2 and N2 atmospheres. The major decomposition stages occurred between 200 and 600 °C with the mass losses of 60.4 and 61.5% at 20 °C/min in the CO2 and N2 atmospheres, respectively. The maximum mass loss rate grew with the increased heating rate, while DTG curves shifted toward a higher temperature. Volatiles were released easier in the N2 than CO2 atmosphere with a higher comprehensive devolatilization index and decomposition rate. At above 750 °C, the char gasificatio...
Source: Journal of Analytical and Applied Pyrolysis - February 11, 2019 Category: Chemistry Source Type: research

Synthesis of valuable intermediate products from natural rubber under supercritical alcohol conditions
In this study, thermal liquefaction of natural rubber was performed using different alcohols to produce valuable intermediate product. The experiment was conducted in autoclave reactor at different temperatures (250 to 375 °C), different solvent-to-natural rubber mass ratios (0.5:1 to 4:1), and at different reaction times (15 to 75 min.). The results showed the maximum liquid yield of 89.53 wt.% was obtained by using propanol at optimum conditions. Around 51.23% and 10.65% of liquid comprised of D-limonene and Isoprene respectively, which are being used as potential feedstock in different industria...
Source: Journal of Analytical and Applied Pyrolysis - February 9, 2019 Category: Chemistry Source Type: research

A new method combining hydrothermal carbonization and mechanical compression in-situ for sewage sludge dewatering: Bench-scale verification
Publication date: Available online 6 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Ningbo Gao, Zongyang Li, Cui Quan, Norbert Miskolczi, Attila EgedyAbstractIn recent era, hydrothermal carbonization is an effective technology of sewage sludge dewatering. In this paper, hydrothermal carbonization coupled with mechanical compression in situ for sewage sludge dewatering has been proposed as state-of-the-art method. Different operating modes and conditions (temperature, residence time, and mechanical pressure) of hydrothermal pretreatment were investigated. The results showed that mechanical compre...
Source: Journal of Analytical and Applied Pyrolysis - February 7, 2019 Category: Chemistry Source Type: research

Editorial Board
Publication date: March 2019Source: Journal of Analytical and Applied Pyrolysis, Volume 138Author(s): (Source: Journal of Analytical and Applied Pyrolysis)
Source: Journal of Analytical and Applied Pyrolysis - February 7, 2019 Category: Chemistry Source Type: research

Biocidal applications trends of bio-oils from pyrolysis: Characterization of several conditions and biomass, a review
Publication date: Available online 31 December 2018Source: Journal of Analytical and Applied PyrolysisAuthor(s): C. Mattos, M.C.C. Veloso, G.A. Romeiro, E. FollyAbstractPyrolysis is a technology that has been extensively studied and developed throughout the world as a practical process in the sustainable use of agricultural, forestry and industrial waste. This review examines the work of several research groups that evaluated the condition pyrolysis and biomass used, with the biocidal potential of bio-oils produced from this thermochemical conversion process in insects, fungi, and bacteria of medical and economic importanc...
Source: Journal of Analytical and Applied Pyrolysis - February 3, 2019 Category: Chemistry Source Type: research

In situ catalytic pyrolysis of Jatropha wastes using ZSM-5 from hydrothermal alkaline fusion of fly ash
Publication date: Available online 1 February 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): S. Vichaphund, P. Wimuktiwan, V. Sricharoenchaikul, D. AtongAbstractIn this work, ZSM-5 catalysts was successfully synthesized from fly ash via alkali fusion followed by hydrothermal treatment with the initial SiO2/Al2O3 ratios of 24 and 40 (HZSM5-FA). HZSM-5 synthesized with SiO2/Al2O3 ratios of 40 exhibited superior physical and textural properties such as higher crystallinity, larger surface area, and smaller particle size. After synthesis, the catalytic activity of HZSM5-FA with SiO2/Al2O3 ratios of 40 was in...
Source: Journal of Analytical and Applied Pyrolysis - February 3, 2019 Category: Chemistry Source Type: research

Diverse impact of α-Fe2O3 with nano/micro-sized shapes on the catalytic fast pyrolysis of pinewood: Py-GC/MS study
Publication date: Available online 28 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Adel Baimoldina, Konstantinos Papadikis, Elena Yu. KonyshevaAbstractThe feasibility of α-Fe2O3 catalyst addition in the in-situ catalytic fast pyrolysis of Pinewood was considered with the focus on the variation in its shape: nano-sized non-ideal spheres, nanotubes, hollow nano/microtubes, and octadecahedral crystals. Nano-sized spheres strongly promoted the formation of acetaldehyde, something that was also observed for the octadecahedral crystals. The formation of acids was primarily facilitated through t...
Source: Journal of Analytical and Applied Pyrolysis - January 29, 2019 Category: Chemistry Source Type: research

Insights into the design of carbon electrodes coming from lignocellulosic components pyrolysis with potential application in energy storage devices: A combined in silico and experimental study
In this study, we give theoretical insights into the in silico design of carbon materials based on lignocellulosic molecules present in the waste residues. We performed pyrolysis-simulated calculations at the ReaxFF level with the Adler's softwood lignin model as the precursor material. Different models were implemented by randomly combining massive lignocellulosic molecules. The simulated pyrolysis of the lignocellulosic components was performed starting with a heating step from room temperature to a temperature limit of 1280 K, followed by a stabilization period. The reaction was subjected to quenching, and finally to a ...
Source: Journal of Analytical and Applied Pyrolysis - January 24, 2019 Category: Chemistry Source Type: research

Experimental and theoretical studies on kinetics for thermochemical sulfate reduction of oil, C2–5 and methane
Publication date: Available online 14 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Kun He, Shuichang Zhang, Jingkui Mi, Qisheng Ma, Yongchun Tang, Yu FangAbstractTo address the kinetic parameters for thermochemical sulfate reduction (TSR) of oil and hydrocarbon gases, hydrothermal experiments involving oil or methane and sulfate at 50 MPa were conducted by a gold tube pyrolysis system. By determination of gas yields in non-isothermal pyrolysis of oil with gypsum and water, it was found that the generation of H2S can be divided into two stages, including TSR of liquid oil and C2-5 hydroca...
Source: Journal of Analytical and Applied Pyrolysis - January 20, 2019 Category: Chemistry Source Type: research

Flame retardant effect and mechanism of a novel DOPO based tetrazole derivative on epoxy resin
Publication date: Available online 17 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Peng Wang, Lei Chen, Hang XiaoAbstractA novel highly efficient flame retardant with phosphaphenanthrene group and tetrazole ring, 6-(((1H-tetrazol-5-yl)amino)(4-hydroxyphenyl)methyl)dibenzo[c,e] [1,2] oxaphosphinine 6-oxide (ATZ), was synthesized and incorporated into epoxy matrix as co-curing agent to remarkably improve the flame retardancy of epoxy resin. The curing behaviors of epoxy systems were investigated by non-isothermal differential scanning calorimetry (DSC) tests. The thermal and flame retardant prope...
Source: Journal of Analytical and Applied Pyrolysis - January 18, 2019 Category: Chemistry Source Type: research

Microwave assisted and conventional pyrolysis of MDF – Characterization of the produced biochars
Publication date: Available online 30 December 2018Source: Journal of Analytical and Applied PyrolysisAuthor(s): T. Haeldermans, J. Claesen, J. Maggen, R. Carleer, J. Yperman, P. Adriaensens, P. Samyn, D. Vandamme, A. Cuypers, K. Vanreppelen, S. SchreursAbstractTwo different heat treatments for MDF, microwave assisted pyrolysis (MWP) and conventional pyrolysis (CPS), are investigated. The influence of different microwave absorbers (activated carbon (AC) and K2CO3) and different microwave powers in MWP and different temperatures in CPS on the characteristics of biochar is reviewed. Morphology and chemical properties of the ...
Source: Journal of Analytical and Applied Pyrolysis - January 18, 2019 Category: Chemistry Source Type: research

Mechanism study of aromatics production from furans with methanol over zeolite catalysts
Publication date: Available online 15 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Chenguang Wang, Zhan Si, Xiaoping Wu, Wei Lv, Kang Bi, Xinghua Zhang, Lungang Chen, Ying Xu, Qi Zhang, Longlong MaAbstractIn this paper, we study the production of aromatic hydrocarbons by co-feeding furans and methanol in a continuous flow fixed-bed reactor over HZSM-5 at 400-600 °C. The effects of reaction temperature, weight hourly space velocity (WHSV), furan to methanol molar ratio and time on stream on the product distribution were investigated. Maximum aromatics yield of 42.0% was obtained over ...
Source: Journal of Analytical and Applied Pyrolysis - January 16, 2019 Category: Chemistry Source Type: research

Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators
Publication date: Available online 15 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): D. Zúñiga, J. Kaal, N. Villacieros-Robineau, M. Froján, F. Alonso-Pérez, F. De la Granda, C.G CastroAbstractWe studied the seasonal fluctuations in the composition of sinking particulate organic matter (POM) in the only upwelling-affected continental margin of Europe, to improve our understanding of the carbon (C) cycle of such systems. The methods employed targeted the elemental, stable isotope (δ13Coc and δ15N) and molecular (Py-GC-MS) composition. The results showed that...
Source: Journal of Analytical and Applied Pyrolysis - January 16, 2019 Category: Chemistry Source Type: research

Moisture content as a design and operational parameter for fast pyrolysis
Publication date: Available online 15 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Frederico Gomes Fonseca, Axel Funke, Andreas Niebel, Ana Paula Soares Dias, Nicolaus DahmenAbstractFast pyrolysis trials of wheat straw were performed in a pilot plant featuring a screw reactor and two stage condensation system. Trials differed in the moisture content of the used biomass (1.2%, 9.2%, and 23.6%) and the sweeping gas flowrate. Higher moisture feedstock seems to lead to higher bio-oil production but the largest organic liquid yield occurred at intermediate feedstock moistures. Increasing the sweepin...
Source: Journal of Analytical and Applied Pyrolysis - January 16, 2019 Category: Chemistry Source Type: research

Enhanced bio-crude yield and quality by reductive hydrothermal liquefaction of oak wood biomass: effect of iron addition
Publication date: Available online 16 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Benedetta de Caprariis, Irene Bavasso, M. Paola Bracciale, Martina Damizia, Paolo De Filippis, Marco ScarsellaAbstractHydrothermal liquefaction (HTL) is a promising technology for the production of high quality bio- crude. Aim of this study is to investigate the effect of the addition of iron powder into the HTL process of oak wood biomass. Fe in HTL conditions should be oxidized by water into Fe3O4 producing H2 in situ which is responsible for the increase of bio-crude yield. Furthermore, the presence of Fe cont...
Source: Journal of Analytical and Applied Pyrolysis - January 16, 2019 Category: Chemistry Source Type: research

Roles of the free radical and carbenium ion mechanisms in pentane cracking to produce light olefins
Publication date: Available online 14 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Xu Hou, Nan Ni, Ya Wang, Weijun Zhu, Yuan Qiu, Zhenheng Diao, Guozhu Liu, Xiangwen ZhangAbstractIn order to explore the roles of the free radical and carbenium ion mechanisms in alkane cracking to produce light olefins, pentane cracking tests have been carried out over a zeolite catalyst at 600 – 800 °C, and a particular attention has been paid to the measurement of the product distribution. The cracking modes for pentane included “uncatalytic pyrolysis” following the free radical mec...
Source: Journal of Analytical and Applied Pyrolysis - January 15, 2019 Category: Chemistry Source Type: research

Experimental and theoretical studies on kinetics for thermochemical sulfate reduction of oil, C2-5 and methane
Publication date: Available online 14 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Kun He, Shuichang Zhang, Jingkui Mi, Qisheng Ma, Yongchun Tang, Yu FangAbstractTo address the kinetic parameters for thermochemical sulfate reduction (TSR) of oil and hydrocarbon gases, hydrothermal experiments involving oil or methane and sulfate at 50 MPa were conducted by a gold tube pyrolysis system. By determination of gas yields in non-isothermal pyrolysis of oil with gypsum and water, it was found that the generation of H2S can be divided into two stages, including TSR of liquid oil and C2-5 hydroca...
Source: Journal of Analytical and Applied Pyrolysis - January 15, 2019 Category: Chemistry Source Type: research

Steam catalytic cracking of fuel oil over a novel composite nanocatalyst: characterization, kinetics and comparative perspective
Publication date: Available online 14 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Mohammad Ghashghaee, Samira Shirvani, Søren KegnæsAbstractA novel composite nanocatalyst (CNM) was fabricated and identified using XRD, NH3-TPD, FTIR, SEM, EDX, and N2 physisorption, and was further assessed for the catalytic cracking of a heavy feedstock to value-added chemicals, including light alkenes and liquid fuels. Multiple phases (MEL, MFI, CHA, and AlPO) and a moderately tuned acidity different from those in FCC and ZSM-5 catalysts were identified for the investigated catalyst. More than 80&...
Source: Journal of Analytical and Applied Pyrolysis - January 15, 2019 Category: Chemistry Source Type: research

Isothermal Fast Pyrolysis Kinetics of Synthetic Polymers Using Analytical Pyroprobe
In this study, the global kinetics of fast pyrolysis of three synthetic polymers, viz., poly(methyl methacrylate) (PMMA), polystyrene (PS) and ultra-high molecular weight polyethylene (UHMWPE), were studied in an analytical Pyroprobe® by collecting isothermal mass loss data at short timescales of 2-150 seconds. The apparent activation energy and pre-exponential factor were determined using integral reaction models. PMMA fast pyrolysis was best described by the contracting cylinder model, while sigmoidal Avrami-Erofeev model was used to describe the fast pyrolysis of PS and UHMWPE. The apparent activation energie...
Source: Journal of Analytical and Applied Pyrolysis - January 12, 2019 Category: Chemistry Source Type: research

Thermal pretreatment of a high lignin SSF digester residue to increase its softening point
Publication date: Available online 24 March 2016Source: Journal of Analytical and Applied PyrolysisAuthor(s): Daniel Howe, Manuel Garcia-Perez, Danny Taasevigen, James Rainbolt, Karl Albrecht, Hui Li, Liqing Wei, Armando McDonald, Michael WolcottAbstractResidues high in lignin and ash generated from the simultaneous saccharification and fermentation of corn stover were thermally pretreated in an inert (N2) atmosphere to study the effect of time and temperature on their softening points. These residues are difficult to feed into gasifiers due to premature thermal degradation and formation of reactive liquids in the feed lin...
Source: Journal of Analytical and Applied Pyrolysis - January 11, 2019 Category: Chemistry Source Type: research

Editorial Board
Publication date: January 2019Source: Journal of Analytical and Applied Pyrolysis, Volume 137Author(s): (Source: Journal of Analytical and Applied Pyrolysis)
Source: Journal of Analytical and Applied Pyrolysis - January 11, 2019 Category: Chemistry Source Type: research

Fast Pyrolysis of Fibre Waste Contaminated with Plastic for use as Fuel Products
Publication date: Available online 9 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Logan Jeremy Brown, François-Xavier Collard, Johann GörgensAbstractPyrolysis is finding increasing application as a tool for the effective management of industrial waste, as it can process a wide variety of heterogeneous feedstock into energy dense products. Inductively heated fast pyrolysis with heating rate of 250 °C min-1 was applied for conversion of three industrial waste streams from a fibre recycling mill, contaminated with plastic wastes, into energy products. Experiments were carrie...
Source: Journal of Analytical and Applied Pyrolysis - January 10, 2019 Category: Chemistry Source Type: research

Catalytic upgrading of coal pyrolysis volatiles over metal-loaded HZSM-5 catalysts in a fluidized bed reactor
In this study, a set of metal-loaded HZSM-5 catalysts were evaluated in a fluidized bed reactor for improving tar quality via the in situ catalytic upgrading of the pyrolysis volatiles. The product yields of the three different phases, the gaseous composition, the char reactivity, and the chemical properties and composition of the coal tar were comprehensively studied. The use of metal-loaded catalysts increased the amounts of light aromatics while decreasing the amounts of aliphatics and oxygenated compounds. The products distribution was optimized from a complex mixture with different functional group compounds to a tar ...
Source: Journal of Analytical and Applied Pyrolysis - January 9, 2019 Category: Chemistry Source Type: research

Changes in oxygen-functional moieties during sequential thermal dissolution and methanolysis of the extraction residue from Zhaotong lignite
Publication date: Available online 8 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Sheng Li, Zhi-Min Zong, Jing Liu, Fang-Jing Liu, Xian-Yong Wei, Guang-Hui Liu, Sheng-Kang WangAbstractThe Zhaotong lignite-derived residue was inflicted to successive thermal dissolution and methanolysis (STD/M) in cyclohexane and CH3OH at different temperature, respectively. To investigate the variation of oxygen-functional moieties (OFMs), extraction residue (ER) and the residue (RSTD/M) from the STD/M were characterized with a X-ray photoelectron spectrometer, solid-state 13C nuclear magnetic resonance spectrom...
Source: Journal of Analytical and Applied Pyrolysis - January 9, 2019 Category: Chemistry Source Type: research

Effects of thermal conditions on char yield and char reactivity of woody biomass in stepwise pyrolysis
This study aims to investigate the effects of thermal conditions on char yield and char reactivity in the stepwise pyrolysis with woody biomass used as feedstock. The accumulated char yield (on original mass basis) and char reactivity were determined. Pyrolysis products were analyzed by Fourier Transform Infrared Spectroscopy (FTIR) and Raman spectrum. The results show that thermal pretreatment increases the aromaticity of feedstock as well as char yield, and reduces the char reactivity and degree of order, which indicate probable intrinsic correlation among them. The effect of thermal pretreatment on char yield is more pr...
Source: Journal of Analytical and Applied Pyrolysis - January 8, 2019 Category: Chemistry Source Type: research

Catalytic conversion of lignite pyrolysis volatiles to light aromatics over ZSM-5: SiO2/Al2O3 ratio effects and mechanism insights
Publication date: Available online 7 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Xue-Yu Ren, Jing-Pei Cao, Xiao-Yan Zhao, Zhen Yang, Yan-Jun Wang, Qiang Chen, Ming Zhao, Xian-Yong WeiAbstractIn-situ reforming of lignite pyrolysis volatiles over ZSM-5 zeolites with different SiO2/Al2O3 ratios was carried out to obtain light aromatics including BTEXN (benzene, toluene, ethylbenzene, xylene, and naphthalene). In comparison to the commercial zeolites, the zeolites used in this work were synthesized by a one-step method with controlled Al addition. The high Al-containing ZSM-5 (SiO2/Al2O3 =&...
Source: Journal of Analytical and Applied Pyrolysis - January 8, 2019 Category: Chemistry Source Type: research

Comprehensive understanding the chemical structure evolution and crucial intermediate radical in situ observation in enzymatic hydrolysis/mild acidolysis lignin pyrolysis
Publication date: Available online 8 January 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Ming Lei, Shubin Wu, Jiajin Liang, Chao LiuAbstractThe in-depth understanding of free radical involved in lignin pyrolysis, is the most important technical barrier for pyrolysis mechanism research. Herein, we report an in situ project by using EPR high temperature cavity for the observation of generated radical in lignin pyrolysis, along with the other state-of-the-art techniques such as two-dimensional heteronuclear single-quantum coherence nuclear magnetic resonance (2D HSQC-NMR) and Py-GCMS combined with high t...
Source: Journal of Analytical and Applied Pyrolysis - January 8, 2019 Category: Chemistry Source Type: research