Sustainable Chemistry for Climate Action最新文献_第3页

Enhancement in the optical and carbon dioxide gas sensing properties of polythiophene by dispersion of manganese dioxide nanoparticles 通过二氧化锰纳米粒子的分散增强聚噻吩的光学和二氧化碳气体传感特性

Sustainable Chemistry for Climate Action Pub Date : 2023-12-13 DOI: 10.1016/j.scca.2023.100036

N.S. Wadatkar , S.A. Waghuley

{"title":"Enhancement in the optical and carbon dioxide gas sensing properties of polythiophene by dispersion of manganese dioxide nanoparticles","authors":"N.S. Wadatkar , S.A. Waghuley","doi":"10.1016/j.scca.2023.100036","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100036","url":null,"abstract":"<div>The present research article demonstrates the dispersion of manganese dioxide (MnO2) nanoparticles in polythiophene (PTh) to enhance the optical and gas sensing properties of PTh/MnO2 nanocomposites. The structural aspects of the as-synthesized nanocomposites were demonstrated by the techniques such as X-ray diffraction (XRD), Fourier transmission infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FE-SEM). Furthermore, the optical characterization of the resulting composite was investigated using UV–Vis spectroscopy. UV–Vis analyses of obtained nanocomposite revealed a forbidden band of ∼ 3.7 eV. The prepared nanocomposites were exposed to CO2 gas to investigate the composites suitability for gas sensing application, which prove to be promising materials. The prominent exploit of the present work is that 0.8 Wt. % MnO2 loaded PTh composite material exhibits significant sensing response at low operating temperature including good stability and fast response and recovery time. The core objective of this work is the discussion of the enhancement in stability, response and recovery time as a consequence of the interaction between the CO2 gas and the as-synthesized nanocomposites.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"4 ","pages":"Article 100036"},"PeriodicalIF":0.0,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772826923000251/pdfft?md5=815e627427f50de0f1b906882a38fdd4&pid=1-s2.0-S2772826923000251-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138839528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly efficient CO2 and propylene oxide co-polymerization using Zn glutarate/Zn-Cr double metal cyanide composite catalyst 使用戊二酸锌/锌铬双金属氰化物复合催化剂进行高效的二氧化碳和环氧丙烷共聚合反应

Sustainable Chemistry for Climate Action Pub Date : 2023-12-13 DOI: 10.1016/j.scca.2023.100037

Ruth Mbabazi , Steven Allan Nyanzi , Betty Naziriwo , Stephen O. Ojwach , Laura C. Folkers , Ola F. Wendt , Emmanuel Tebandeke

{"title":"Highly efficient CO2 and propylene oxide co-polymerization using Zn glutarate/Zn-Cr double metal cyanide composite catalyst","authors":"Ruth Mbabazi , Steven Allan Nyanzi , Betty Naziriwo , Stephen O. Ojwach , Laura C. Folkers , Ola F. Wendt , Emmanuel Tebandeke","doi":"10.1016/j.scca.2023.100037","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100037","url":null,"abstract":"<div>A highly active zinc glutarate-double metal cyanide (DMC) composite catalyst (ZnGA/Zn-CrDMC) was designed for the carbon dioxide (CO2) and propylene oxide (PO) copolymerization reaction. The composite catalyst was synthesized in a rheological phase reaction and characterized using Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (PXRD), and scanning electron microscopy (SEM). The synthesized composite catalysed the solvent free reactions of PO and CO2 to afford biodegradable polypropylene carbonate (PPC) copolymer. 1H NMR,13C NMR, FT-IR and ESI-TOF mass spectrometry measurements were employed to confirm the characteristics of the PPC produced. Under optimal reaction conditions (50 bar CO2, 70 °C, 24 h), the ZnGA-Zn3[Cr(CN)6]2 composite displayed higher catalytic activities in the copolymerization reactions than the individual catalysts. The ZnGA:Zn3[Cr(CN)6]2 ratio of 15:1 gave PPC yield of 47.9 g polymer/g cat compared to ZnGA that produced 42.6 g polymer/ g cat in 24 h. In addition, the PPC produced from the composite catalyst displayed higher carbonate linkage content (Fc = 85.4 %) compared to the value of Fc = 33.9 %. obtained using the Zn3[Cr(CN)6]2 catalyst. Similaly, the composite catalsyt produced PPC with molecular weight of 4200 g/mol and narrow polydispersity index of 2.2. The resultant PPC copolymer displayed good thermal stability, exhibiting a high degradation temperatures (TGA-10%) of 229 °C and complete decomposition at 350 °C.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"4 ","pages":"Article 100037"},"PeriodicalIF":0.0,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772826923000263/pdfft?md5=e9142611519166d42caf74c7ca67df39&pid=1-s2.0-S2772826923000263-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138839530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Size-separated aerosol chemical characterization over Ny-Ålesund during the Arctic summer of 2010 2010年北极夏季Ny-Ålesund上空的尺寸分离气溶胶化学特征

Sustainable Chemistry for Climate Action Pub Date : 2023-01-01 DOI: 10.1016/j.scca.2023.100016

Sunil M. Sonbawne , M.P. Raju , P.D. Safai , P.C.S. Devara , Suvarna Fadnavis , A.S. Panicker , G. Pandithurai

{"title":"Size-separated aerosol chemical characterization over Ny-Ålesund during the Arctic summer of 2010","authors":"Sunil M. Sonbawne , M.P. Raju , P.D. Safai , P.C.S. Devara , Suvarna Fadnavis , A.S. Panicker , G. Pandithurai","doi":"10.1016/j.scca.2023.100016","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100016","url":null,"abstract":"<div>Chemical composition of aerosols is of great concern in the Arctic because of its great influence on climate. In this communication, we report the physico-chemical properties of size-separated aerosol data archived at Gruvebadet lab in Ny-Ålesund (78.55°S, 11.55°E) as a part of the Indian Arctic Mission over the station \"Himadri\" in 2010. The results reveal that the mass-size distribution (MSD) of aerosol composition exhibits tri-modal distribution with coarse-mode (62%), fine-mode (32%) and weak nucleation-mode (6%) indicating dominance of natural sources over the study region. MSD of chemical components showed a significant contribution to coarse-mode particles for Ca2+, Mg2+, Na+ and Cl−; fine-mode particles for SO42−, NO3−, NH4+ and K+. The marine sources contributed maximum for SO42− (89%) and Mg2+ (44%) in the coarse fraction, and in the fine fraction, 31% to SO42− and 86% to Mg2+. Non-marine sources were major contributors (80 to 95%) in both mode fractions for Ca2+and K+. The estimated aerosol radiative forcing in the atmosphere of ∼3.21 W/m2 could be attributed to the loading of black carbon aerosols (62%) over the site. The backward trajectories show air masses from Canada and Greenland travelling from 6000 m elevation, bringing the pollutants to Ny-Ålesund and lower altitudes; the oceanic region within Arctic circle contributes more.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100016"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49710547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of the ion-exchange sequence on the CO2 uptake and CO2–over–N2 selectivity of zeolite NaKA 离子交换顺序对NaKA分子筛CO2吸收率和CO2 - over - n2选择性的影响

Sustainable Chemistry for Climate Action Pub Date : 2023-01-01 DOI: 10.1016/j.scca.2023.100030

Wenming Hao , Yufei Shi , Latif Ullah , Ruifeng Li , Niklas Hedin

{"title":"Effects of the ion-exchange sequence on the CO2 uptake and CO2–over–N2 selectivity of zeolite NaKA","authors":"Wenming Hao , Yufei Shi , Latif Ullah , Ruifeng Li , Niklas Hedin","doi":"10.1016/j.scca.2023.100030","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100030","url":null,"abstract":"<div>The CO2 and N2 adsorption on small-pore zeolite |Na12-xKx|-A was hypothesized to be affected by the ion exchange sequence used for the zeolite preparation. Zeolites were prepared by ion exchange of a commercially available zeolite |Na12|-A (4A) and a zeolite |K12|-A (3A) composition prepared from zeolite 4A. The CO2 and N2 adsorption properties were studied experimentally, and the binary CO2-over-N2 selectivity was estimated from single-component adsorption data using the apparent Henry's law coefficients. It was observed that the level of CO2 adsorption was reduced by increasing the K content for both series of zeolite NaKA. Zeolite |Na12-xKx|-A-from-4A had the highest CO2 adsorption capacity (at 1 atm and 273 K) for a given K content. At low K content, zeolite |Na12-xKx|-A-from-3A had the highest CO2-over-N2 selectivity. At an intermediate K content, the zeolites prepared from 4A had the highest selectivity. These differences show that non-equilibrium processes during the ion exchange are important for the CO2 and N2 adsorption properties of the derived zeolites. As of now, we refrain from speculating whether they relate to the detailed positioning of K+ and Na+ cations in the local structure of the zeolite or to mass-transport-related concentration gradients of the cations in the structure. Irrespectively, it was observed that the ion-exchange sequence affects the CO2 and N2 adsorption properties of the zeolites, which could be of general importance when it comes to the tuning of the properties of cation-rich zeolites.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"3 ","pages":"Article 100030"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49718043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and characterization of lignin nanoparticles isolated from oil palm empty fruit bunch and application in biocomposites 油棕果穗木质素纳米粒子的合成、表征及其在生物复合材料中的应用

Sustainable Chemistry for Climate Action Pub Date : 2023-01-01 DOI: 10.1016/j.scca.2022.100011

Udari Prasadini Perera , Mei Ling Foo , Irene Mei Leng Chew

{"title":"Synthesis and characterization of lignin nanoparticles isolated from oil palm empty fruit bunch and application in biocomposites","authors":"Udari Prasadini Perera , Mei Ling Foo , Irene Mei Leng Chew","doi":"10.1016/j.scca.2022.100011","DOIUrl":"https://doi.org/10.1016/j.scca.2022.100011","url":null,"abstract":"<div>Valorisation of industrial biomass wastes, such as oil palm empty fruit bunch (EFB) generated by the palm oil industry, could promote its sustainable use while minimising the adverse impacts on the environment. To this end, the present study attempted to synthesize lignin from EFB. A simple yet environmentally friendly technique, ultrasonication, has been employed to convert the isolated lignin to lignin nanoparticles (LNPs). The transmission electron microscopy results and dynamic light scattering measurements have confirmed the mean particle size of LNPs at 220 nm. Also, LNPs showed better thermal performance compared to lignin, as indicated by a higher glass transition and maximum degradation temperature. LNPs were stable in the pH range of 4.5 - 9.0 and sodium chloride concentration below 100 mM over a week of storage. At pH 7, the LNP suspension remains stable without precipitation for up to three months of storage under ambient conditions. In addition, the LNPs were incorporated into the starch matrix to form biocomposites and then compared against lignin biocomposites and neat starch film for their thermal, mechanical, and hydrophobic performance. The biocomposites with LNPs are anticipatedly possessing better performance than the neat starch film and lignin biocomposites in all aspects.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100011"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49710579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Understanding the future of bio-based fertilisers: The EU's policy and implementation 了解生物基肥料的未来:欧盟的政策和实施

Sustainable Chemistry for Climate Action Pub Date : 2023-01-01 DOI: 10.1016/j.scca.2023.100033

Ari Kurniawati , Petra Stankovics , Yahya Shafiyuddin Hilmi , Gergely Toth , Marzena Smol , Zoltan Toth

{"title":"Understanding the future of bio-based fertilisers: The EU's policy and implementation","authors":"Ari Kurniawati , Petra Stankovics , Yahya Shafiyuddin Hilmi , Gergely Toth , Marzena Smol , Zoltan Toth","doi":"10.1016/j.scca.2023.100033","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100033","url":null,"abstract":"<div>Bio-based fertilisers (BBFs) aim to reduce the European Union's (EU) dependence on imported mineral fertilisers by recycling and reusing nutrient-rich by-streams. However, implementation can be very complex, and the right policies must be delivered to optimize BBFs' production-consumption flows. This study seeks a new perspective for policymakers by understanding current policies and reviewing previous studies on BBFs' implementation. Data collection from the researchers' database plus additional information from the \"EU-Lex\" platform and Member States' Government websites were obtained to fulfil the critical analysis. Our reviews indicate that policies related to BBFs are still under development to comply with some appropriate laws and regulations for their implementation. The current policies, implemented among others by the new EU Fertilising Products Regulation (FPR), are structured by component material categories (CMC) and product function categories (PFC) that govern the specific function of the product and the raw material utilization. For farmers and Small and Medium Enterprises (SMEs), compliance with the FPR may be challenging. Yet, for regional use, farmers and producers can still rely on BBFs in compliance with national regulations. In addition, attention from policymakers is needed to increase the level of public acceptance, farmer's adoption, and availability of BBF with acceptable prices. Finally, this study provides prospective research opportunities to help the development of BBFs.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"3 ","pages":"Article 100033"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49718045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A realistic look at CO2 emissions, climate change and the role of sustainable chemistry 对二氧化碳排放、气候变化和可持续化学作用的现实看法

Sustainable Chemistry for Climate Action Pub Date : 2023-01-01 DOI: 10.1016/j.scca.2023.100012

Gadi Rothenberg

{"title":"A realistic look at CO2 emissions, climate change and the role of sustainable chemistry","authors":"Gadi Rothenberg","doi":"10.1016/j.scca.2023.100012","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100012","url":null,"abstract":"<div>The increase of man-made greenhouse gas (GHG) emissions is a serious global problem. Hence the 2015 Paris Agreement and the COP meetings, which show the willingness of governments to reduce emissions and fight climate change. Their main goals are keeping average temperatures to max 2 °C above pre-industrial times, and reaching net-zero emissions by 2050. But how realistic are these goals? GHG emissions may be everyone's long-term problem, but they are nobody's short-term problem. The huge benefits we all reap from the free energy provided by fossil fuels, and the way that governments, companies and people handle risk, create enormous barriers. I will show here, using simple back-of-the-envelope calculations, that we will not reach the Paris Agreement goals. Moreover, I will explain the reasons why much excellent research in sustainable chemistry will not make a sizable dent in CO2 emissions. This doesn't mean we should give up. We must keep on developing and implementing sustainable technologies. But we should also prepare to adapt to living in a world with average temperatures 3–4 °C higher than pre-industrial times. Optimistic scenarios make people complacent. Wake up. It is later than you think.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100012"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49732627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Fine tuning CO2 adsorption and diffusion behaviors in ultra-microporous carbons for favorable CO2 capture at moderate temperature 微调CO2在超微孔碳中的吸附和扩散行为，使其在中等温度下有利于CO2的捕获

Sustainable Chemistry for Climate Action Pub Date : 2023-01-01 DOI: 10.1016/j.scca.2023.100015

Ya-Qi Ba, Yong-Sheng Wang, Tian-Yi Li, Zhe Zheng, Guang-Ping Hao, An-Hui Lu

{"title":"Fine tuning CO2 adsorption and diffusion behaviors in ultra-microporous carbons for favorable CO2 capture at moderate temperature","authors":"Ya-Qi Ba, Yong-Sheng Wang, Tian-Yi Li, Zhe Zheng, Guang-Ping Hao, An-Hui Lu","doi":"10.1016/j.scca.2023.100015","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100015","url":null,"abstract":"<div>CO2 capture from flue gas is one of the global urgent tasks. Adsorption separation of CO2 is an energy-efficient way as compared to the absorption method. The central issue is to devise efficient adsorbents that work well under flue gas conditions with temperatures of 323–348 K and low CO2 concentrations of 15%. In this work, we targeted this issue and proposed a well-controlled diffusion strategy, which is achieved over a series of poly(furfuryl alcohol)-derived carbons (PFCs) with dense and abundant ultra-micropores. As the adsorption temperature increased from 298 to 348 K, the CO2 capture capacity is 54% kept for PFC-800, which is 1.2 times higher than that for samples without diffusion limitation. The capture of CO2 is kinetics control at ambient temperature, however, at 348 K CO2 with higher kinetic energy can overcome the restriction of the narrow pore entrance and the CO2/N2 selectivity for simulated flue gas composition increases from 20 to 40. Furthermore, the PFCs exhibit a high CO2 volumetric adsorption capacity of 97 cm3 cm−3 at 298 K and 1 bar, benefiting the practical application deployed with an integrated adsorption column. The diffusion kinetics can be further tuned when altering the bulk phase into nanocoating, which would inspire their application in different scenarios.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100015"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49732800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production and optimization of Jeevamrutha bio-fertilizer formulations for soil fertility and its role in waste minimization 土壤肥力生物肥料配方的生产与优化及其在减少废弃物中的作用

Sustainable Chemistry for Climate Action Pub Date : 2023-01-01 DOI: 10.1016/j.scca.2023.100025

Udaratta Bhattacharjee , Ramagopal V.S. Uppaluri

{"title":"Production and optimization of Jeevamrutha bio-fertilizer formulations for soil fertility and its role in waste minimization","authors":"Udaratta Bhattacharjee , Ramagopal V.S. Uppaluri","doi":"10.1016/j.scca.2023.100025","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100025","url":null,"abstract":"<div>Intense inorganic fertilization practices exponentially detriment upon the soil health and enhance input costs of production. Henceforth, organic bio-fertilizers such as Jeevamrutha being developed with rurally available low cost nitrogen and carbon sources are necessary to serve as alternate fertilization systems for soil nutritional enrichment and plant growth. Associated mechanism with respect to the interaction of precursors such as jaggery and gram flour in Jeevamrutha bio-fertilizer have not been vividly explored in the prior art. Considering this lacunae, the article addresses the optimization of these precursors for the affirming of their fundamental role in the nutrient characteristics of the Jeevamrutha bio-fertilizer. Thereby, the article targets the optimization of Jeevamrutha bio-fertilizer formulations using the Central Composite Design (CCD)-based statistical tool for summer and winter seasons. The corresponding Total Kjehdahl Nitrogen (TKN), Ammonium Nitrogen (AN) and Phosphate (P) during the summer (0.67%, 427.56 mgL−1 and 1405.78 mgL−1) and the winter (0.28%, 135.86 mgL−1 and 1046.75 mgL−1) seasons were achieved in North-East India. This study provides critical insights for waste-to-value added product development through the utilization of rurally available substrates for nutrient enhancement of soil that will aid waste management approach. Also, in comparison with the control group (0%) and various treated samples for the optimized formulation (25%, 50%, 75% and 100% v/v), the highest Germination Index (GI) of 87.87% was obtained for the 50% (v/v) treated sample (mung bean) indicating its efficacy towards phytotoxic effects. Thereby, the methodology and results aim to revolutionize agricultural systems and improve soil health due to reduced cost and preparation time and wider utility of land and waste precursors in comparison to other organic fertilizer preparation techniques.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100025"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49732990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production and characterization of liquid oil from the pyrolysis of waste high-density polyethylene plastics using spent fluid catalytic cracking catalyst 废液催化裂化催化剂热解高密度聚乙烯废液油的制备及表征

Sustainable Chemistry for Climate Action Pub Date : 2023-01-01 DOI: 10.1016/j.scca.2023.100020

Felix Aibuedefe Aisien , Eki Tina Aisien

{"title":"Production and characterization of liquid oil from the pyrolysis of waste high-density polyethylene plastics using spent fluid catalytic cracking catalyst","authors":"Felix Aibuedefe Aisien , Eki Tina Aisien","doi":"10.1016/j.scca.2023.100020","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100020","url":null,"abstract":"<div>Globally expanding plastic use has created environmental issues related to the disposal of plastic waste. One of the possible alternative techniques for turning waste plastics into high-quality liquid oils is thermal and catalytic pyrolysis. The research focused on high-density polyethylene (HDPE) thermal and catalytic slow pyrolysis employing waste fluid catalytic cracking (FCC) catalyst at various temperatures and catalyst-to-plastic ratios in a batch reactor. The ASTM methods and Gas Chromatography-Mass Spectrometry (GC-MS) were used to analyze the physical and chemical characteristics of the produced liquid oil fraction. The results indicate that a pyrolysis temperature of 500°C and a catalyst to plastic ratio of 0.2 were the ideal operating conditions. The BET surface area, pore volume, and average pore size of the spent FCC catalyst were 0.103 cm2/g, 7.02 nm, and 63.24 m2/g, respectively. Waste HDPE plastic was thermally pyrolyzed, yielding 73.9 wt% liquid oil, 23.1 wt% gas, and 3 wt% char as the end products.Furthermore, the catalytic pyrolysis produced a higher yield of liquid oil (88.8 wt%) but less gas (9.9 wt%) and char (1.3 wt%). The kinematic viscosity, density, flash point, pour point, and calorific value of liquid oil produced by catalytic pyrolysis were 2.48 cSt, 0.85 g/cm3, 34.5 °C, -6 °C, and 41.6 MJ/kg, respectively. According to the GC-MS data, the liquid oil's chemical composition contains 38 hydrocarbons between C6 and C24. Because of this, the liquid oils made from waste HDPE have characteristics similar to those of conventional fuels and can be used as alternative renewable energy sources.</div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100020"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49761358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5