Journal of Analytical and Applied Pyrolysis最新文献

{"title":"Understanding limonene synthesis from waste tire pyrolysis through a kinetics-based perspective","authors":"Jorge Poblete ,&nbsp;Romel Jiménez ,&nbsp;Frederik Ronsse ,&nbsp;Stef Ghysels ,&nbsp;Luis E. Arteaga-Pérez","doi":"10.1016/j.jaap.2025.107207","DOIUrl":"10.1016/j.jaap.2025.107207","url":null,"abstract":"<div><div>The pyrolysis of mining truck waste tires (MTWT) produces a multicomponent liquid abundant in limonene and its derivatives, including cymene and single-ring aromatics, among others. Nonetheless, although crucial for enhancing the chemical valorization of MTWT, the reaction pathways for the synthesis and subsequent transformation of pyrolytic limonene remain insufficiently comprehended. This study introduces an innovative kinetic methodology for analyzing limonene production during MTWT pyrolysis. The study combines thermogravimetric analysis (TGA) and analytical pyrolysis (Py-GC-MS) to analyze the pyrolytic behavior of MTWT and its constituent polymers, natural rubber (NR), butadiene rubber (BR), and styrene-butadiene rubber (SBR). The results of Py-GC-MS experiments showed that limonene is generated from natural rubber after C-C cleavage of polymeric chains followed by (i) an intramolecular cyclization or (ii) a Diels-Alder reaction of two isoprene units. Thereafter, limonene undergoes secondary reactions to generate cycloalkenes and aromatics. Our findings show that the formation of isoprene from the cleavage reaction of NR has the lowest activation energy (53.3 kJ/mol) within the reaction mechanism, while limonene conversion into tertiary products like aromatics or cycloalkenes requires higher activation energies (219 kJ/mol). This result suggests that catalytic materials, higher residence times or lower reaction temperatures are required to control product distribution. The kinetic model presented here can be used in future ex-situ catalytic pyrolysis studies to unravel limonene conversion into higher-value chemicals.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107207"},"PeriodicalIF":5.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pyrolysis of Posidonia oceanica fibrous spheres: A comparative evaluation of conventional and microwave-assisted pyrolysis","authors":"Riccardo Gallorini ,&nbsp;Luca Rosi ,&nbsp;Anna Maria Raspolli Galletti ,&nbsp;Domenico Licursi ,&nbsp;Claudia Antonetti","doi":"10.1016/j.jaap.2025.107206","DOIUrl":"10.1016/j.jaap.2025.107206","url":null,"abstract":"<div><div><em>Posidonia oceanica</em> debris naturally accumulates on the coastline, negatively affecting the pleasantness of the beaches, whilst it could be advantageously exploited as a source of novel biofuels and bioproducts. In this work, grinded <em>Posidonia oceanica</em> fibrous spheres have been subjected to thermal pyrolysis, comparing conventional and microwave technologies, working under mild similar conditions, aimed at the integrated production of biochar, bio-oil and syngas. The microwave heating favored the cracking reactions, thus promoting the aromatization path, even more so by including a dephlegmator unit. On the other hand, conventional pyrolysis system reduces such degradation reactions, as demonstrated by the chemical composition of the corresponding bio-oil, which includes more aliphatic compounds. Remarkably, the use of the same biochar as both a microwave absorber and a reducing agent was effective for improving the selective syngas production (63 wt%), mainly composed of H₂ and CO (46 and 53 vol%, respectively). The production of higher quality syngas with microwave technology is due to the occurrence of gasification reactions, through the formation of local hot spots. LCA data processing was specifically considered and developed, showing that on the laboratory scale the environmental impact of both technologies is similar, whereas on larger scale microwave-assisted pyrolysis still presents some drawbacks, mainly those associated with energy supply/management. In this context, some specific solutions were provided for making microwave-assisted pyrolysis more competitive with the conventional one, already in the next future, which is a desirable aspect to promote the intensification development of this technology.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107206"},"PeriodicalIF":5.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Large-scale reactive molecular dynamics research on pyrolysis mechanics of spiro[4.5]decane","authors":"Junhao Guo ,&nbsp;Caihua Yang ,&nbsp;Yutong Wang ,&nbsp;Guozhu Liu","doi":"10.1016/j.jaap.2025.107208","DOIUrl":"10.1016/j.jaap.2025.107208","url":null,"abstract":"<div><div>Spiro-fuels, as the derivative of cyclic ketones obtained from lignocellulose, are promising alternative biofuels. In this work, the overall pyrolysis mechanism of spiro[4.5]decane, the most representative spiro-fuel, is revealed by large-scale reactive molecular dynamic simulations. The pyrolysis of spiro[4.5]decane can be divided into three stages: the decomposition of spiro[4.5]decane begins with the ring-opening in one of the two rings, leading to four representative alicyclic intermediates firstly. Then these intermediates further decompose and form a series of small molecular products through allyl radicals. Finally, the generated products further react and gradually form soot precursors. It is also found that the reaction temperature affects the initial pathways and intermediate distributions, and ultimately change the product distributions. In addition, the apparent activation energy of spiro[4.5]decane pyrolysis is also calculated, and the result (259 kJ/mol) suggests an activity close to JP-10.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107208"},"PeriodicalIF":5.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The catalytic effect of nano Fe, Co, Ni, Cu and Zn oxides on the thermal decomposition of ammonium perchlorate-based molecular perovskite (DAP-4)","authors":"Soumyamol Panthaplackal Bhaskaran ,&nbsp;Parvathy Chandrababu ,&nbsp;Vijayalakshmi K. Periya ,&nbsp;Deepthi Thomas ,&nbsp;Jobin Cyriac ,&nbsp;Rajeev Raghavan","doi":"10.1016/j.jaap.2025.107188","DOIUrl":"10.1016/j.jaap.2025.107188","url":null,"abstract":"<div><div>Energetic molecular perovskites are unique high-energy systems with good thermal stability and energetic parameters. For practical applications in explosives and propellant formulations, the ignition delay of these systems has to be reduced by using suitable catalysts. In this study, 1,4-diazabicyclo [2.2.2] octane-1,4-diium ammonium triperchlorate (DAP-4) molecular perovskite was synthesized by molecular assembly strategy and nano metal oxides of Fe, Co, Ni, Cu and Zn were synthesized by the co-precipitation method. The effect of these metal oxides on the thermal decomposition of DAP-4 was studied. X-ray diffraction, Fourier transform infrared spectroscopy and field emission scanning electron microscopy were employed to understand the structure and morphology of DAP-4 and nano metal oxides. The catalytic activity of the metal oxides on the thermal decomposition of DAP-4 was evaluated using thermogravimetry-differential scanning calorimetry. Among the different nano metal oxides, nano CuO showed the best catalytic effect for the thermal decomposition of DAP-4. The decomposition peak temperature of DAP-4 was decreased by 61°C for the CuO catalyzed reaction.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107188"},"PeriodicalIF":5.8,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Co-pyrolytic valorization and synergistic interactions of waste tire and corn plant stalk: A detailed study on kinetics, thermodynamics attributes, drivers, and mechanistic pathways of pollutants reduction","authors":"Muhammad Zohaib Farooq ,&nbsp;Guanyi Chen ,&nbsp;Akash Kumar ,&nbsp;Fawei Lin","doi":"10.1016/j.jaap.2025.107202","DOIUrl":"10.1016/j.jaap.2025.107202","url":null,"abstract":"<div><div>Waste tire (WT) pyrolysis is a well-known technique for the production of fuel, but the formation of pollutants such as PAHs, S-compounds and N-compounds is inevitable due to the existence of sulfur, nitrogen and several additives. The co-pyrolysis of waste tire with biomass can be a viable solution to inhibit the pollutants to mitigate environmental issues. Therefore, co-pyrolysis of waste tire and corn plant stalk (CPS) is performed in TG-MS and Py-GCMS to investigate the synergistic effect. The addition of CPS improved pyrolysis efficiency of WT which resulted in earlier decomposition temperature and reduction in residual from 35.44 wt% to 27.75 wt%. Kinetics and thermodynamic analysis revealed that the average activation energy of co-pyrolysis blends decreased from 83.9 kJ/mol to 46.3 kJ/mol and the addition of CPS avoid the activation complex. The peaks intensities of SO₂ and H₂S were highest compared to COS, CS₂ and CH₃SH in WT100 but NH₃ and HNCO in CPS100 showed maximum peaks than HCN, NO. The peaks of 9 series of gaseous PAHs in WT100 were higher than CPS100. The blend ratios WT/CPS 2:2 and WT/CPS 1:3 reduced the emission of gaseous sulfur, nitrogen and PAHs compounds. The effect of final pyrolysis temperature and blend ratios in Py-GCMS analysis unveiled that co-pyrolysis maxing ratio WT/CPS 2:2 at 500 ℃ effectively minimized the phenolic, aldehydes, ketones, and acids which enhanced the fuel quality as well as lowered the benzene derivatives/ single ring aromatic hydrocarbons (SRAH) which are regarded as PAHs precursors. Furthermore, the difference between experimental and calculated yield confirms that the synergistic effect completely inhibited PAHs and decreased the N-compounds and S-compounds as well as increased the alkene and olefins. So, the results indicated that co-pyrolysis of WT with biomass can significantly restrain the pollutants and enhance the pyrolytic oil quality which can be used as an alternative environmental friendly fuel.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107202"},"PeriodicalIF":5.8,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disposable wet-wipes as potential source of pollution: Multi-analytical investigation of the composition of fibres and additives","authors":"Tommaso Nacci ,&nbsp;Francesca De Falco ,&nbsp;Richard C. Thompson ,&nbsp;Federico Vitale ,&nbsp;Ilaria Degano ,&nbsp;Francesca Modugno","doi":"10.1016/j.jaap.2025.107200","DOIUrl":"10.1016/j.jaap.2025.107200","url":null,"abstract":"<div><div>Wet wipes are used as disposable products for personal hygiene care, domestic cleaning, and sanitary use. Increased use of wet wipes as a consequence of the global COVID-19 pandemic, along with the introduction of labelling to indicate that some wipes can be disposed of by flushing or are biodegradable, raise concerns about the risks associated to the release of microfibres and chemicals when wet wipes enter the sewage system and the environment. A key step in the study of the behaviour and fate of the impact of the disposal of single use wet wipes is their physical-chemical characterisation in terms of fibres and additives. We designed and applied a multi-analytical protocol based on evolved gas analysis-mass spectrometry (EGA-MS) and multi-shot pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS), along with scanning electron microscopy (SEM) and infrared spectroscopy (ATR-FTIR), to identify the chemical composition of the constituent materials of commercial wet wipes. Four different classes of wet wipes - certified and non-certified flushable, biodegradable, conventional - comprising a total of 12 types of samples were analysed in terms of fibre composition and organic additives. EGA-MS and Py-GC-MS analysis confirmed that all flushable and biodegradable wipe samples were only composed of cellulose-based fibres, whereas poly(propylene) and poly(ethylene terephthalate) were detected, along with cellulose, in the conventional wipes. The two techniques proved also effective in the detection of additives like benzoic acid/sodium benzoate, 2-phenoxyethanol, glycerine etc. SEM analysis allowed the discrimination between natural and regenerated cellulose fibres. The analytical protocol could be further developed to examine wet wipe degradation, the potential environmental effects of additives, and assess their impact in environmental samples.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107200"},"PeriodicalIF":5.8,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144194773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalytic fast co-pyrolysis of lignocellulosic biomass and polypropylene over bimetallic catalysts to promote the formation of hydrocarbons","authors":"Zhongwei Wang ,&nbsp;Daokuan Liang ,&nbsp;Xiaofeng Li ,&nbsp;Heyi Huang ,&nbsp;Xiao He ,&nbsp;Zhaoying Li ,&nbsp;Yong Dong","doi":"10.1016/j.jaap.2025.107199","DOIUrl":"10.1016/j.jaap.2025.107199","url":null,"abstract":"<div><div>Lignocellulosic biomass is considered a renewable resource with great potential to replace fossil energy, which has a relatively low effective H/Ceff ratio. As a result, its thermochemical conversion products are of low calorific value and quality. Polypropylene (PP) is rich in hydrogen and contains little oxygen. Catalytic fast co-pyrolysis (co-CFP) of cotton stalks (CS) and PP significantly improved bio-oil quality. It enables the efficient and clean utilization of CS and PP, while enhancing the concentration of BTEX (Benzene, toluene, ethylbenzene, xylene) and other liquid hydrocarbons in bio-oil. In this study, bimetallic catalysts are prepared by alkali-modified HZSM-5 and zirconium dioxide (ZrO₂) loaded with Ni and Mo, respectively. The impact of different ratios on the product is explored, revealing their synergistic effects in the co-CFP process. XRD, XPS, TEM, and other methods characterize the morphology and physicochemical properties of the catalysts. The co-CFP of CS and PP by Py-GC/MS and thermogravimetric experiments is investigated. The experimental conditions were as follows: pyrolysis temperature of 600 °C, raw material mixing ratio of 1:1, and feedstock-to-catalyst ratio of 1:1. In the catalytic stage, when the Ni:Mo ratio was set to 2:1, the relative hydrocarbon content in the Ni-Mo/ZrO₂ catalyst reached a maximum value (75.2 %) at Ni:Mo= 2:1. The relative hydrocarbon content initially decreased and then increased with decreased Ni/Mo ratio and reached the minimum at 1:2. The relative hydrocarbon content in the Ni-Mo/HZSM-5 catalyst reaches a maximum value (60.9 %) at Ni:Mo= 2:1. Ni-Mo/HZSM-5 catalyst has more substantial selectivity for aromatic hydrocarbons. The synergistic effect between metals is explored using reaction kinetics based on thermogravimetric experiments. Based on thermogravimetric experiments, the synergistic effects between metals were analyzed using reaction kinetics. Specifically, this involves effectively reducing the activation energy of the reaction, thereby promoting the formation of hydrocarbons. For the NiMo/ZrO₂ catalyst, the activation energy generally decreases with increasing Mo content (from 38.51 to 29.47 kJ/mol). In contrast, when HZSM-5 is used as the support material, the activation energy decreases with increasing Mo loading and decreasing Ni loading (from 12.31 to 8.43 kJ/mol). The right amount of metal loading introduces the catalyst's active site, and the synergy between the metals further improves the bio-oil quality. The activation energy is lowest when Ni:Mo = 2:1. The change trend is consistent with the content of hydrocarbons.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107199"},"PeriodicalIF":5.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combining infrared spectroscopy (FTIR-ATR) and analytical pyrolysis for assessing chemical degradation pathways in waterlogged Neolithic wood","authors":"Mohamed Traoré ,&nbsp;Antonio Martínez Cortizas ,&nbsp;Olalla López-Costas ,&nbsp;Federico Paolino ,&nbsp;Jeannette Jacqueline Łucejko","doi":"10.1016/j.jaap.2025.107197","DOIUrl":"10.1016/j.jaap.2025.107197","url":null,"abstract":"<div><div>This investigation focuses on getting a further understanding of the wood degradation processes based on results obtained by chemical analysis (combining mid-infrared spectroscopy and analytical pyrolysis) of waterlogged woods recovered from an acidic marsh sediment during an archaeological excavation at the <em>O Areal</em> archaeological site (Vigo, NW Spain). The woods consist of eight oak (<em>Quercus</em> sp.) and two cherry (<em>Prunus</em> sp.) remains that were radiocarbon dated between 6100 and 5990 cal BC. The results indicate clear changes in the wood’s chemical composition related to the degradation of the polysaccharide and lignin compounds. The chemical changes are attributed to various degradation processes, including, (i) hydrolysis of polysaccharides, (ii) partial depolymerization of lignin as well as polysaccharides, and (iii) partial oxidation of the lignin. Furthermore, contrasting the pyrolysis data with mid-infrared results enabled to connect specific mid-infrared signals with depolymerization and oxidation of the lignocellulosic components in the studied waterlogged wood material. Our findings point out that an accurate interpretation of waterlogged wood chemical degradation requires considerations beyond the commonly stated depletion of wood polysaccharide content. Finally, this study demonstrates that integrating FTIR-ATR spectroscopy and analytical pyrolysis provides a comprehensive and detailed analysis of chemical changes during wood degradation. Such an outcome may be crucial for conservators seeking to identify and address the vulnerabilities of waterlogged ancient wood exposed to specific burial conditions like highly acidic environments.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107197"},"PeriodicalIF":5.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The evolution law of nano-pore structure characteristics during the underground pyrolysis process of tar-rich coal","authors":"Jie Chen ,&nbsp;Yongping Wu ,&nbsp;Yubin Ke ,&nbsp;Tao Xu","doi":"10.1016/j.jaap.2025.107198","DOIUrl":"10.1016/j.jaap.2025.107198","url":null,"abstract":"<div><div>The dynamic evolution of nanopore architectures critically governs the adsorption efficiency of hydrocarbons in tar-rich coal during subsurface pyrolysis, offering a pathway to optimize product yields. In this study, two types of Chinese coal were analyzed using the small-angle neutron scattering (SANS) instrument to monitor changes in nanopore structure throughout the underground pyrolysis process. The experiment uses the in-situ SANS instrument at the China Spallation Neutron Source (CSNS), with temperatures ranging from 30℃ to 800℃, under two different heating rates (5 and 20℃/min). These measurements were complemented by Brunauer-Emmett-Teller (BET) analysis, scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). The experimental results show that the average nanopore size increases progressively with rising temperatures, particularly between 300°C and 500°C during the devolatilization stage, where it grows from 112.8 nm to 131.3 nm. Furthermore, at elevated temperatures, coal nanopores tend to become isotropic, regardless of their initial distribution. A slower heating rate results in higher overall scattering intensity and more pronounced nanopore development.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107198"},"PeriodicalIF":5.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pyrolysis of Co-hydrothermally pretreated LDPE and straw for enhanced bio-oil recovery from agricultural plastic waste","authors":"Paola Giammattei ,&nbsp;Madeline Karod ,&nbsp;Ran Darzi ,&nbsp;Roy Posmanik ,&nbsp;Jillian L. Goldfarb","doi":"10.1016/j.jaap.2025.107184","DOIUrl":"10.1016/j.jaap.2025.107184","url":null,"abstract":"<div><div>Agricultural plastics improve crop quality, reduce water use, extend growing cycles, and slow the spread of disease and infestations. Despite such benefits, agricultural plastic waste (APW) is poorly managed. To valorize APW, we propose a two-step process in which APW is pre-hydrothermally treated and then pyrolyzed. Hydrothermal processing (HTP) reduces the elemental oxygen and volatile matter present in raw lignocellulosic biomass. Consequently, we hypothesized that co-HTP of low-density polyethylene (LDPE) and straw would produce a bio-oil with fewer oxygenated compounds upon pyrolysis of the hydrochar than pyrolysis of the raw residues. LDPE, straw and a 4:1 LDPE-to-straw mixture were hydrothermally treated at 250 °C and 300 °C. The hydrochars were then pyrolyzed at 450 °C or 650 °C. Co-HTP produced a pyrolysis bio-oil primarily composed of aliphatic compounds and reduced the number of compounds with oxygen functional groups present. Additionally, co-HTP reduced the devolatilization of straw to a single step at 450 °C, reducing the energy required for the pyrolysis process.</div></div>","PeriodicalId":345,"journal":{"name":"Journal of Analytical and Applied Pyrolysis","volume":"191 ","pages":"Article 107184"},"PeriodicalIF":5.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}