Sustainable Chemistry for Climate Action最新文献

{"title":"Ultrasound-assisted alkaline pretreatment of Parthenium hysterophorus for fermentable sugar production using a response surface approach","authors":"Naveen Kumar ,&nbsp;Vicky Saharan ,&nbsp;Anita Yadav ,&nbsp;Neeraj K. Aggarwal","doi":"10.1016/j.scca.2023.100027","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100027","url":null,"abstract":"<div><p>Parthenium hysterophorus is a lignocellulosic material with a high potential for fermentable sugar production due to its high availability and adaptability. <strong>The current investigation aims at studying the effectiveness of KOH-assisted ultrasonication on the pretreatment of</strong> P. hysterophorus <strong>biomass. Ultrasonication is a new hydrolysis technology that can provide a higher fermentable sugar yield in less time and at a lower temperature while using less alkali. The combination of KOH and ultrasound has been applied with a detailed study into the effects of various parameters such as sonication time (operating range of 10–50</strong> <strong>min), KOH concentration (0.5–2.5%), and temperature (20–50</strong> °<strong>C).</strong> A higher reducing sugar yield <strong>(128.15±0.06</strong> <strong>mg/g)</strong> was obtained in US-KOH-pretreated biomass as compared with that of the KOH-pretreated biomass. The optimised pretreatment (<strong>using a</strong> 1:10 bath ratio, 1% (w/v) KOH, and 15-min sonication times) reduced lignin content <strong>(delignification)</strong> by 58.72% (w/w) and increased the available cellulose content (27.97% w/w) over untreated biomass, which was confirmed by compositional analysis of treated biomass. Further US-KOH-pretreatment was investigated for the liberation of maximum reducing sugar <strong>(325.51</strong> <strong>mg/g)</strong> using the response surface methodology (RSM) approach. Following statistical optimization using response surface methodology, <strong>the yield of enzymatic hydrolysis was increased by 3.2-fold compared to the control.</strong> According to the investigations, <em>P. hysterophorus</em> can be used as a promising and affordable biomass source for the production of commercial bioethanol.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100027"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49710710","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}

{"title":"The impact of direct air capture during the last two decades: A bibliometric analysis of the scientific research Part II","authors":"Daniel Casaban,&nbsp;Elena Tsalaporta","doi":"10.1016/j.scca.2023.100021","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100021","url":null,"abstract":"<div><p>This bibliometric analysis is a following part that aims to expand the information from our previous study. Direct Air Capture (DAC) technologies are not progressing as fast as expected and time is limited. Research and shared knowledge can accelerate the implementation of DAC and Carbon Capture Utilisation and Storage (CCUS) solutions. Numerous authors publish their findings on different platforms and journals. Thus, this bibliometric analysis is using Web of Science as data base. During this study, two cases of study were performed: one merges concepts such as ``carbon capture,'' CO<sub>2</sub> capture and DAC, and a second one only focused on removing the CO<sub>2</sub> from the atmosphere; being the latter at the principal topic of this analysis. CCUS and DAC + S share the same approach to capture CO<sub>2</sub>, yet the conditions are quite different. Many articles related to DAC were overshadowed by words such as ``CO₂ capture'' and ``carbon capture.'' However, the results showed that in 1999, Professor Lackner was the first scientist who suggested the implement of DAC technologies. After him, a great number of authors followed up and researched on the topic. Based on the outcomes of this study, United States, Europe and China are leading the research. The United States holds the major number of publications and has strong links with the rest of the countries, which implicates that authors from other nations collaborate with the North American country. Yet, it is necessary to increase its social acceptance to accelerate the deployment of these technologies.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100021"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49761360","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}

{"title":"Valorisation of agro-waste cashew nut husk (Testa) for different value-added products","authors":"Mohd. Khalid Zafeer ,&nbsp;K. Subrahmanya Bhat","doi":"10.1016/j.scca.2023.100014","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100014","url":null,"abstract":"<div><p>After the edible cashew nut's pulp and oil are removed, the shells are considered agricultural waste. A number of by-products and waste produced during the industrial processing of cashew nuts can pose environmental risks. Testa, cashew apple, cashew apple bagasse, and cashew nut shell liquid (CNSL) are a few examples. The reddish-brown covering part of cashew is called Testa, which exists between Kernel and Shell. Academic, industrial, and other practitioners are becoming interested in using agricultural by-products as green raw materials to create a variety of valuable goods. It has been determined that cashew nut shells (CNS) and their liquid extract (CNSL) are agro-waste rich in valuable and functional renewable goods. Cashew Nut Husk (CNH) components distinctive structural characteristics warrant the possibility of various modifications to accommodate different purposes. Numerous previously published articles describe the work done mainly on the potential of cashew nut shell liquid and cashew nut shell. <span>[1]</span> This review focuses on developing Cashew Nut Husk as a green source to create different value-added products. A thorough literature review of the existing situation and attempts undertaken to use Cashew Nut Husk waste for various uses is provided.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100014"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49710580","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}

{"title":"The role of MgO during CO2 hydrogenation to methanol over Pd/ZnO catalyst","authors":"Sachin Kumar Sharma ,&nbsp;Bappi Paul ,&nbsp;Anurag Srivastava ,&nbsp;Rohan Singh Pal ,&nbsp;Mukesh Kumar Poddar ,&nbsp;Tuhin Suvra Khan ,&nbsp;Chanchal Samanta ,&nbsp;Rajaram Bal","doi":"10.1016/j.scca.2023.100019","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100019","url":null,"abstract":"<div><p>Selective hydrogenation of CO₂ to methanol over Pd nanoparticles supported on MgO promoted ZnO oxide catalyst was investigated in a fixed bed continuous downflow reactor at 3 MPa pressure and temperature between 200–280 °C. The synthesized catalyst showed exceptionally high selectivity (&gt;90%) for methanol production <em>via</em> CO₂ hydrogenation at low temperature (220 °C) and pressure (3 MPa). 2wt%Pd loaded on ZnO catalyst showed very less activity but the addition of MgO on the ZnO led to a higher dispersion of Pd, which directly influences catalyst activity and methanol production. The addition of 10 wt% MgO over 2wt%Pd/ZnO catalyst improved the catalyst activity, where we observed ∼ 8.2% CO₂ conversion with ∼ 90.6% methanol selectivity. Density Functional Theory (DFT) calculation shows the addition of MgO at the Pd/ZnO catalyst promotes the adsorption of CO₂, as well as reaction intermediates HCOO and COOH. The long-term stability of MgO-promoted Pd-ZnO was tested, and it was found that catalyst showed no deactivation even after 80 h time-on-stream.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100019"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49732724","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}

{"title":"The synthesis of biooil using ambient pressure liquefaction of organic waste","authors":"Jerko Mors,&nbsp;N. Raveendran Shiju","doi":"10.1016/j.scca.2023.100013","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100013","url":null,"abstract":"<div><p>To realize a sustainable alternative to fossil fuels, carbon neutral sources such as biowaste should be converted to biooil. This paper reports the results of our study on the catalytic liquefaction of various organic waste (mandarin peel, coffee grounds and cocoa shell) to synthesize an oil which can be used as a sustainable fuel. Out of the tested reactions, spent coffee ground liquefaction proved to yield the best results when catalyzed by phosphotungstic acid (PTA). Increasing the catalyst loading resulted in an increasing yield, with the maximum yield of 40 % obtained with a catalyst loading of 38 wt%. The resulting oil contained compounds mainly in the desired C8-16 range (79 %) that is required for jet fuel. While most of these compounds were oxygenated compounds an upgrading reaction should allow the oil to be used as a sustainable jet fuel alternative.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100013"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49732901","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}

{"title":"Conventional and unconventional chemical treatment methods of natural fibres for sustainable biocomposites","authors":"Mahima Samanth,&nbsp;K. Subrahmanya Bhat","doi":"10.1016/j.scca.2023.100034","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100034","url":null,"abstract":"<div><p>Natural fibres could be used as one of the raw materials for the production of engineering materials. They have the advantage of low density, light weight, biodegrability and the capacity to reprocess to a certain extent. There are certain limitations of such fibres when formed composites with synthetic polymers like high degree of moisture absorption, and lack of affinity between fiber and the matrix. The presence of polar components like hemicellulose and lignin content in the fibres are the reason for these materials to be hydrophilic. This issue has been addressed by treating fiber surface with variety of chemical reagents which is reported to improve mechanical and adhesion property between fiber and the matrix. Chemical treatments can be based on reactions involving esterification methods like acetylation and benzylation, graft polymerization methods like treatments with triazine, isocyanates and maleic anhydride, silane coupling agents, other treatments include alkali, acrylation and acrylonitrile, permanganate, peroxide treatments and also steric acid, sodium chloride and oleoyl chlorite. Surface modification of fibres reduces its moisture absorption tendency and improves their mechanical properties thereby increasing durability of the composites.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"3 ","pages":"Article 100034"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49708647","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}

{"title":"Regulating basicity of porous poly(ionic liquid)s for CO2 fixation into dimethyl carbonate under mild condition","authors":"Fangpei Ma,&nbsp;Zhixin Song,&nbsp;Shu Dong,&nbsp;Zengjing Guo,&nbsp;Long Ma,&nbsp;Yu Zhou,&nbsp;Jun Wang","doi":"10.1016/j.scca.2023.100023","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100023","url":null,"abstract":"<div><p>Direct carbon dioxide (CO₂) conversion into valuable chemicals like dimethyl carbonate (DMC) is an atom efficient avenue for CO₂ utilization but greatly challenges the catalyst designation because the requirement of multiple active sites. Herein, regulation of the basicity of porous poly(ionic liquid)s (PPILs) was reached by post-treating epoxy-functional precursor and utilizing 1,5,7-triazodicyclic [4.4.0] Dec-5-ene (TBD) to convert epoxy functional ionic moieties into the multifunctional sites with nucleophilic-leaving capable anions, hydroxyl group and TBD derived basic sites. The constructed catalyst was highly active in the one-pot and two-step DMC synthesis by coupling the CO₂ cycloaddition with epoxide and successive transesterification. A high yield up to 93% was observed by using atmospheric CO₂ under the metal-solvent-additive free condition. Stable reusability and extendibility by using multiple epoxides further reveal the efficiency and potentiality of the present catalyst in CO₂ fixation.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100023"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49710724","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}

{"title":"Low temperature CO2 methanation on hydrothermal synthesis of Ni-Ba/Sm2O3 catalysts","authors":"Athirah Ayub,&nbsp;Hasliza Bahruji,&nbsp;Abdul Hanif Mahadi,&nbsp;Amira Afra Adam","doi":"10.1016/j.scca.2023.100032","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100032","url":null,"abstract":"<div><p>A low temperature CO₂ methanation is a thermodynamically favorable route to produce highly selective methane while preventing catalyst deactivation. Ni-Ba/Sm₂O₃ catalysts synthesized using one-pot hydrothermal method exhibited enhanced reducibility with high CO₂ adsorption capacity to achieve CO₂ conversion at low temperatures. CO₂ conversion occurred at 200 °C with 5% conversion, progressively increasing to reach equilibrium at 400 °C with 100% selectivity to methane. BaO promotes surface oxygen vacancy in Sm₂O₃, which is responsible for forming bidentate formate species during CO₂ methanation. Comparative DRIFTS analysis with Ni-Ba/Sm₂O₃ synthesized using impregnation indicates the catalysts followed different mechanistic pathways depending on the amount of surface oxygen vacancy generated by BaO/Sm₂O₃ proximity.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"3 ","pages":"Article 100032"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49718047","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}

{"title":"Binderless SAPO-34 beads for selective CO2 adsorption","authors":"Dina G. Boer ,&nbsp;Dennis Čiliak ,&nbsp;Jort Langerak ,&nbsp;Benny Bakker ,&nbsp;Paolo P. Pescarmona","doi":"10.1016/j.scca.2023.100026","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100026","url":null,"abstract":"<div><p>Selective adsorption of CO₂ from biogas allows isolating biomethane, which can then be used as a direct substitute for natural gas. The microporous zeotype SAPO-34 is a suitable material for CO₂ adsorption because it can achieve high working capacity at relatively mild regeneration conditions. In industrial applications, adsorbents need to be shaped into a macroscopic format (e.g. beads, pellets) in order to reduce the pressure drop over the adsorption column. Typically, an inert binder is added to the powder to achieve the desired format. In this work, novel hierarchically porous binderless SAPO-34 beads with a diameter in the range 0.7–1.2 mm were synthesised employing an ion-exchange resin as a hard template. The interior of the beads consisted mostly of small SAPO-34 crystals (&lt; 0.3 μm) interconnected to each other and thus generating a network of meso‑ and macropores between them, as demonstrated by XRD and SEM. Around several of the beads, a crystal overgrowth was observed consisting mostly of larger SAPO-34 crystals (1–25 μm). The SAPO beads displayed good CO₂ adsorption capacity (3.0 mmol g⁻¹ at 1 bar), which was higher than that of binder-containing SAPO-34 extrudates (2.4 mmol g⁻¹ at 1 bar), but slightly lower compared to SAPO-34 in powder format (3.4 mmol g⁻¹ at 1 bar). Furthermore, the SAPO-34 beads displayed high CO₂/CH₄ selectivity (8, at partial pressures mimicking biogas, i.e. 0.4 bar CO₂ and 0.6 bar CH₄) as well as high CO₂/N₂ selectivity (33, at partial pressures mimicking flue gas, i.e. 0.15 bar CO₂ and 0.85 bar N₂). Notably, a high CO₂ working capacity of 1.8 mmol g⁻¹ was estimated based on the adsorption isotherm between 1 and 0.2 bar, and this value has the potential to be further improved by increasing the adsorption pressure to &gt; 1 bar.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"2 ","pages":"Article 100026"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49732633","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}

{"title":"Optimized scalable CuB catalyst with promising carbon footprint for the electrochemical CO2 reduction to ethylene","authors":"Marco Löffelholz ,&nbsp;Jonas Weidner ,&nbsp;Jan Hartmann ,&nbsp;Hesam Ostovari ,&nbsp;Jens Osiewacz ,&nbsp;Stefan Engbers ,&nbsp;Barbara Ellendorff ,&nbsp;João R.C. Junqueira ,&nbsp;Katja Weichert ,&nbsp;Niklas von der Assen ,&nbsp;Wolfgang Schuhmann ,&nbsp;Thomas Turek","doi":"10.1016/j.scca.2023.100035","DOIUrl":"https://doi.org/10.1016/j.scca.2023.100035","url":null,"abstract":"<div><p>Defossilizing ethylene production to decrease <span><math><msub><mtext>CO</mtext><mn>2</mn></msub></math></span> emissions is an integral challenge in the context of climate change, as ethylene is one of the most important bulk chemicals. Electrochemical <span><math><msub><mtext>CO</mtext><mn>2</mn></msub></math></span> reduction is a promising alternative to conventional steam cracking, reducing the carbon footprint of ethylene production when coupled with renewable energy sources. In this work, we present the optimization of a boron-doped copper catalyst towards higher selectivity for ethylene. The method for catalyst preparation is optimized, obtaining larger batch sizes while maintaining high ethylene selectivity. Additionally, life cycle assessment is applied to investigate the environmental impacts of electrochemical <span><math><msub><mtext>CO</mtext><mn>2</mn></msub></math></span> reduction and to compare its carbon footprint with alternative pathways for ethylene production. Altogether, the scaled-up catalyst achieves promising electrochemical results while significantly reducing the carbon footprint for ethylene production in comparison to the conventional production pathway when combined with low-emission energy.</p></div>","PeriodicalId":101195,"journal":{"name":"Sustainable Chemistry for Climate Action","volume":"3 ","pages":"Article 100035"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277282692300024X/pdfft?md5=f1f32da6a65847b2929a1c623fb31137&pid=1-s2.0-S277282692300024X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138466929","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}