Greenhouse Gases: Science and Technology最新文献

{"title":"Development of Digital/Visual Twin for Real-Time Leak Detection in Gas Pipelines Under Multiphase Flow Conditions","authors":"Wahib A. Al-Ammari,&nbsp;Ahmad K. Sleiti,&nbsp;Matthew Hamilton,&nbsp;Hicham Ferroudji,&nbsp;Sina Rezaei Gomari,&nbsp;Ibrahim Hassan,&nbsp;Rashid Hasan,&nbsp;Ibnelwaleed A. Hussein,&nbsp;Mohammad Azizur Rahman","doi":"10.1002/ghg.2379","DOIUrl":"https://doi.org/10.1002/ghg.2379","url":null,"abstract":"<p>Leak detection (LD) in gas pipelines (GPs) is critical for ensuring operational safety and environmental protection. This study presents a novel digital/visual twin for detecting single- and multiple leaks in GPs under both single- and multiphase flow conditions. The framework of the digital twin leverages experimental data from a multiphase flow-testing loop and synthetic data generated using OLGA software to validate and optimize machine learning (ML) models for leak detection and localization. Several ML models, including random forest (RF), support vector machine (SVM), <i>k</i>-nearest neighbors (<i>k</i>-NNs), decision tree regression (DTR), and eXtreme gradient boosting (XGBoost), were tested individually for their ability to classify leak conditions and localize leaks. Initial results showed moderate performance for individual models, with accuracies ranging from 42% to 57%. However, a significant improvement was observed through the use of advanced techniques such as stacking models, feature engineering, and data averaging. The final stacking regressor model, which combined the strengths of RF, <i>k</i>-NN, and SVM, outperformed the individual models, achieving <i>R</i>² values exceeding 0.96 with an accuracy of 90% in complex multiple leak scenarios. The digital twin system integrates this ML framework with real-time data visualization, allowing operators to visualize offshore pipeline conditions, detect leaks, and localize leak positions using a virtual twin representation of the physical pipeline. The virtual twin provides an interactive, high-fidelity interface that enables users to monitor and analyze leak events as they occur, enhancing situational awareness and decision-making capabilities. The combination of advanced ML techniques and digital twin technology provides a robust and accurate solution for real-time LD in offshore pipelines. It significantly improves detection performance in multiphase flow conditions. This innovative approach sets a new benchmark for offshore pipeline monitoring systems, offering superior LD capabilities under a range of operational conditions. The system is readily adaptable for integration with SCADA platforms and pipeline monitoring infrastructures, supporting deployment in offshore oil and gas operations, industrial gas distribution networks, and critical energy corridors where early LD is essential.</p>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 5","pages":"513-530"},"PeriodicalIF":2.8,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ghg.2379","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145297204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Nitrogen and Oxygen Functional Groups on Bio-Based Porous Carbon Modified Using Activation Modification Treatment to Improve CO2 Adsorption Performance","authors":"Farihahusnah Hussin,&nbsp;Nur Syahirah Mohamed Hatta,&nbsp;Siok Ee Lam,&nbsp;Mohamed Kheireddine Aroua","doi":"10.1002/ghg.2377","DOIUrl":"https://doi.org/10.1002/ghg.2377","url":null,"abstract":"<div>\u0000 \u0000 <p>This study explores the role of nitrogen and oxygen contents on the surface of modified coconut shell porous carbon to improve its physicochemical properties thus increase CO₂ adsorption capacity. The synthesis of porous carbon was performed using an activation modification method at low temperature (200°C) followed by chemical activation to enhance surface properties of porous carbon. In this study, the surface properties of porous carbon were modified using several types of nitrogen-containing functional groups, such as urea, melamine and amine groups (monoethanolamine [MEA] and 2-(methylamino)ethanol [MAE]). Changes in the surface morphology of the modified porous carbon were characterised using several analytical techniques, including Brunauer–Emmett–Teller (BET) surface area, surface morphology, elemental composition analysis and Raman spectroscopy. The adsorption performance of the modified porous carbon was measured using packed-bed CO₂ adsorption under low-pressure conditions. Subsequently, the highest breakthrough time and CO₂ adsorption capacity values were compared. The analysis of pore size distribution curves confirmed the existence of a combination of micropores, mesopores and a small amount of macropores in all modified porous carbon samples. As expected, the results show that all modified porous carbon samples showed increased breakthrough time and CO₂ adsorption capacity compared to coconut shell activated carbon (CS). Among the modified activated carbon, CS-MAE produced the highest breakthrough time (27 min) and CO₂ adsorption capacity (1.48 mmol/g). Finally, the experiment results from multiple adsorption–desorption cycles show good regeneration performance of CS-MAE. This finding highlights the feasibility of using CS-MAE as a capturing agent for CO₂ adsorption.</p>\u0000 </div>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 5","pages":"531-541"},"PeriodicalIF":2.8,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145297203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Alkanolamines Corrosivity During CO2 Capture and in the Presence of Deep Eutectic Solvent and Ionic Liquid as Inhibitor","authors":"Mysara Eissa Mohyaldinn,&nbsp;Victor Ola,&nbsp;Aleeya Farzana Aidy,&nbsp;Muhammad Firdaus Bin Md Saidin,&nbsp;Weallfearnius Justin,&nbsp;Tigabwa Y. Ahmed,&nbsp;Mohammed A. Ayoub,&nbsp;Mohd Dzul Hakim B. Wirzal","doi":"10.1002/ghg.2372","DOIUrl":"https://doi.org/10.1002/ghg.2372","url":null,"abstract":"<div>\u0000 \u0000 <p>Carbon capture and storage (CCS) technologies are vital for reducing carbon dioxide (CO₂) emissions, but corrosion threatens the efficiency and durability of CCS infrastructure. Accurate assessment of alkanolamine solution corrosivity and effective corrosion inhibitors are essential for reliable CCS design. This study evaluates the corrosion inhibition performance of reline (a deep eutectic solvent, DES) and 1-ethyl-3-methylimidazolium trifluoroacetate (an ionic liquid, IL) on carbon steel in carbonated amine solutions using the weight loss method. Before the use of corrosion inhibitors, it presents an experimental investigation of the corrosivity of three alkanolamines commonly used for carbon capture, namely, monoethanolamine (MEA), diethanolamine, and methyl diethanolamine, using electrochemical methods in addition to surface morphology analysis using field emission scanning electron microscopy. Through meticulous experimentation involving the immersion of carbon steel API 5L X52 metal specimens in CO₂-saturated MEA solutions with varying DES and IL concentrations and immersion times, the study uncovers promising insights. The amine concentration used was 10–30 wt% at a temperature of 60–70°C with inhibitor concentration of reline at 0, 30, 50, and 70 wt% and IL at 0.1, 0.3, and 0.5 wt%. A notable reduction in corrosion rates is observed with increasing DES concentrations (a maximum of 77.1% in inhibiting efficiency at 70 wt% DES), underscoring the protective role of DES in inhibiting corrosion. Additionally, the IL was found to be effective as a corrosion inhibitor, with the optimum concentration being at 0.5 wt% giving a maximum inhibition efficiency of 69.8%. This study emphasizes the importance of DES and IL for effective corrosion inhibition in the amine system, thereby ensuring the long-term sustainability and efficacy of CCS infrastructure. 2025 Society of Chemical Industry and John Wiley &amp; Sons, Ltd.</p>\u0000 </div>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 5","pages":"558-572"},"PeriodicalIF":2.8,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145297621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Promotion of Ni/La2O3 Catalysts by Copper for Efficient Dry Reforming of Methane","authors":"Parisa Ebrahimi,&nbsp;Methene Briones Cutad,&nbsp;Anand Kumar,&nbsp;Mohammed J. Al-Marri","doi":"10.1002/ghg.2370","DOIUrl":"https://doi.org/10.1002/ghg.2370","url":null,"abstract":"<p>The catalytic performance of Ni/La₂O₃ and Ni–Cu/La₂O₃ for dry reforming of methane (DRM) was investigated, focusing on reducibility, stability, and coke resistance. Cu incorporation lowered the Ni reduction temperature, as revealed by temperature-programmed reduction (TPR), enhancing hydrogen spillover and oxygen vacancy formation. X-ray photoelectron spectroscopy (XPS) confirms that Cu stabilizes the oxygen lattice, minimizes carbonate accumulation, and facilitates CO₂ activation. Catalytic tests at 850°C demonstrated 78% CH₄ conversion and 96% CO₂ conversion for Ni–Cu/La₂O₃, compared to 55% and 72% for Ni/La₂O₃, respectively. X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) confirmed that Cu prevents Ni sintering, maintaining high dispersion. Carbon deposition analysis showed 0.50 wt.% total carbon for Ni–Cu/La₂O₃, slightly higher than Ni/La₂O₃ (0.42 wt.%), but with a 40% reduction in graphitic carbon. The synergistic effect between Cu and Ni optimizes Ni dispersion, modulates electronic properties, and weakens Ni–La₂O₃ interactions, improving CH₄ activation and carbon removal. Ni–Cu/La₂O₃ exhibits outstanding activity and resistance to deactivation, making it a highly effective and stable catalyst for CO₂ conversion and syngas production in DRM, with a strong synergy between Ni and Cu, along with the stabilizing influence of the La₂O₃ support, enhancing its overall performance and durability.</p>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 5","pages":"542-557"},"PeriodicalIF":2.8,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ghg.2370","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145297444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable Strategies for Optimizing the Reduction of GHG Emissions in Qatar's Football Stadiums","authors":"Mustapha Alaoui,&nbsp;Fahad Abdulla Thani Al Zarraa","doi":"10.1002/ghg.2363","DOIUrl":"https://doi.org/10.1002/ghg.2363","url":null,"abstract":"<div>\u0000 \u0000 <p>Greenhouse gas (GHG) emissions peaked significantly in the last few decades, leading to environmental issues like global warming and climate change. Soccer stadiums are highly densely populated and consume significant amounts of energy, which results in emitting a large amount of GHG. It is crucial, therefore, to find an efficient way to optimize these emissions. Soccer (football) stadiums are densely populated facilities that consume vast amounts of energy, resulting in considerable GHG emissions; however, identifying effective strategies to optimize and reduce these emissions remains a gap in the literature. This study, describes rational approaches to optimize the reduction of GHG emissions and understand its mechanism in soccer stadiums in Qatar. This is driven by the data collected from global systems (Fédération Internationale de Football Association [FIFA] reports and global sustainability assessment system) and local ones (Qatar Football Association and the Ministry of Environment and Climate Change, in addition to the local stadiums and clubs in Qatar). Various variables were considered, and also hybrid systems of principal component analysis (PCA) and machine learning (ML) approaches were used for the optimization process in five stadiums: Stadium 974, Al Janoub, Al Bayt, Lusail Stadium, and Education City Stadium. The study employed a PCA-assisted ML framework to identify key sustainability factors and predict the impact of interventions on emissions for these five stadiums. The results demonstrate a successful reduction of GHG emissions by 20%–40% and an improvement in CO₂ offsetting by 40%–100%, besides increasing water conservation to 70%–95% and boosting renewable energy integration from 15% to 100% in Qatar's stadium. These results could be used as an initial platform for promoting carbon footprint reduction in other stadiums worldwide. In summary, the findings offer a practical roadmap for stadium managers and policymakers to achieve significant GHG emission cuts while enhancing sustainability performance.</p>\u0000 </div>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 5","pages":"573-580"},"PeriodicalIF":2.8,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145297104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Screening of Lithium-Based Salts in Non-Aqueous Electrolyte Solution of Monoethanolamine for Carbon Dioxide Capture","authors":"Aisyah Ilyani Ismail,&nbsp;Mohd Azlan Kassim,&nbsp;Mohamed Kheireddine Aroua","doi":"10.1002/ghg.2362","DOIUrl":"https://doi.org/10.1002/ghg.2362","url":null,"abstract":"<p>This study investigates the screening of lithium-based salts in non-aqueous electrolyte solutions of monoethanolamine (MEA) for potential use in integrated carbon capture and conversion (ICCC) technology. Experimental measurements of density, viscosity, nitrous oxide (N₂O) solubility, and CO₂ solubility were conducted for various lithium salts, including lithium chloride (LiCl), lithium bromide (LiBr), and lithium nitrate (LiNO₃), in MEA–dimethyl sulfoxide (DMSO) system at 303.15 K at different CO₂ pressures ranging from 344 to 1379 kPa. The results indicated that the addition of lithium salts to the amine solution significantly enhances CO₂ absorption capacity, exceeding the benchmark value of 0.5 mol CO₂/mol MEA typically reported for 5 M MEA aqueous systems. The highest CO₂ solubility in the system was observed following the order 2 M MEA + 0.5 M LiBr &lt; 2 M MEA + 0.5 M LiNO₃ &lt; 2 M MEA + 0.5 M LiCl in DMSO with corresponding values of 1.2213, 1.2801, and 1.3381 mol CO₂/mol MEA, respectively, identifying LiCl as the most effective additive. It was also found that using DMSO as an organic solvent greatly enhanced the CO₂ absorption capacity compared to water, evidenced by Henry's law constant determined using N₂O analogy, in addition to its lower sensible heat than water. The findings demonstrate that MEA in organic solvent shows a promising performance in CO₂ capture, with CO₂ loading higher than the industrial standard (&lt;0.5 mol CO₂/mol MEA). Ultimately, the screening process outlined in this study serves as a foundation for future research aimed at optimizing electrolyte formulations for enhanced carbon capture efficiency.</p>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 5","pages":"581-595"},"PeriodicalIF":2.8,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ghg.2362","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145297079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing Circular Economy Through Utilizing the Vickrey Price Auction for Carbon Permit Allocation","authors":"Mustafa Oguz Afacan,&nbsp;Ahmed Ali Khalifa","doi":"10.1002/ghg.2359","DOIUrl":"https://doi.org/10.1002/ghg.2359","url":null,"abstract":"<p>Carbon pricing is crucial to advancing a circular economy by internalizing the environmental costs of emissions. Governments often use auctions to distribute carbon permits. This article applies the Vickrey pricing auction to carbon permit allocation for the first time in the literature. We show that it encourages truthful bidding and efficiently allocates permits based on true valuations. This contrasts with the first-price auction, used in the European Union Emissions Trading System and the California Cap-and-Trade Market, where bidders are incentivized to misreport their bids. Our analysis demonstrates that the Vickrey pricing auction enhances market transparency, eliminates manipulation, and improves the efficiency of carbon permit allocation. We discuss the implications for policymakers and stakeholders in designing carbon-pricing policies to combat climate change.</p>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 5","pages":"596-600"},"PeriodicalIF":2.8,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ghg.2359","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145297578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isotherms, Thermodynamics and Regeneration Studies of CO2 Adsorption on Activated Carbon Impregnated With Waste-Sourced Natural Amino Acids","authors":"Nur Syahirah Mohammed Hatta,&nbsp;Farihahusnah Hussin,&nbsp;Lai Ti Gew,&nbsp;Mohamed Kheireddine Aroua","doi":"10.1002/ghg.2354","DOIUrl":"10.1002/ghg.2354","url":null,"abstract":"<p>This study investigated the CO₂ adsorption isotherms, thermodynamic properties and regeneration efficiency of palm shell activated carbon (AC) impregnated with waste-sourced natural amino acids from egg white (EW), namely, ACEW-30. Initially, the performance of ACEW-30 was compared with AC impregnated with fresh EW and synthetic amino acids using fixed-bed adsorption system. The results revealed that ACEW-30 prepared from waste sources demonstrated comparable performance with other adsorbents tested, suggesting its potential for waste valorisation. Afterwards, the data were fitted to various adsorption isotherm models, namely, Langmuir, Freundlich, Sips, Toth, Dubinin–Radushkevich and Temkin, to characterise the adsorbate-adsorbent interaction between CO₂ molecules and ACEW-30 at different adsorption temperatures (25–50°C) and CO₂ partial pressures (0.15–0.30 vol.%). The isotherm results were used to evaluate thermodynamic properties using Van't Hoff and Clausius–Clapeyron equations. The effect of regeneration conditions (desorption temperatures and nitrogen purging flow rate) have also been investigated prior to cyclic adsorption–desorption experiments. Overall findings indicate that CO₂ adsorption on ACEW-30 was best fitted to Freundlich isotherm, spontaneous and exothermic in nature. The isosteric heat of adsorption was within 20–24 kJ/mol, suggesting that the adsorption mechanism lies within the intermediate region between purely physical and purely chemical. Remarkably, the results obtained from regeneration studies reveal that ACEW-30 exhibited high regeneration stability at 25°C and 800 mL/min purging flow rate, with more than 87% efficiency even after 20 cyclic adsorption–desorption.</p>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 4","pages":"472-486"},"PeriodicalIF":2.8,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ghg.2354","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144832619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Study of CO2 Hydrate Formation in the Presence of Modified Nanoclay in a Rocking Vessel","authors":"Mahsa Jafari Khamirani,&nbsp;Mohsen Mohammadi,&nbsp;Mohammad Shahbazian,&nbsp;Mohammad Dinari,&nbsp;Mohammad Reza Ehsani","doi":"10.1002/ghg.2348","DOIUrl":"10.1002/ghg.2348","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, the effect of nanoclay on the gas storage in the hydrate phase was investigated. Nanoparticles were modified with polyethyleneimine (PEI) to improve their surface properties, and these modified nanoparticles were subsequently characterized. Subsequently, gas hydrate formation experiments were conducted for CO₂ storage in the hydrate phase. A rocking reactor was employed to form the gas hydrate. In addition, the effect of different nanoparticle concentrations (200, 400, and 500 ppm), the PEI concentration loaded on nanoparticles (30% and 50%), the initial volume of suspension, and initial pressure were investigated. Data on CO₂ consumption, water-to-hydrate conversion, and storage capacity were collected throughout the experiments. This study is a continuation of the research by Jafari Khamirani et al. (2024). The results indicated that nanoparticles increased gas consumption and storage capacity compared to water in the rocking vessel. Additionally, compared to the study by Jafari Khamirani et al. (2024), the nanoparticles demonstrated better effectiveness, in the rocking vessel compared to the stirrer-type vessel. Among the experiments, nanoparticles modified with 50% PEI outperformed compared to those with 30% PEI and unmodified nanoparticles, which indicates the positive impact of amino groups on hydrate formation. The surface-grafted nanoclay with a mass fraction of 500 ppm with 50% PEI had the highest CO₂ gas consumption, with an improvement of approximately 33.26% compared to pure water; this concentration also has a maximum amount of storage capacity of 70.78 V/V. © 2025 Society of Chemical Industry and John Wiley &amp; Sons, Ltd.</p>\u0000 </div>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 4","pages":"449-457"},"PeriodicalIF":2.8,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diatomite as a Partial and Sustainable Cement Replacement: Chemical, Mechanical, and Thermal Properties","authors":"Younes El Miski,&nbsp;Oussama Zine,&nbsp;Mohamed Ameur,&nbsp;Yassine Kharbouch,&nbsp;Driss Taoukil","doi":"10.1002/ghg.2352","DOIUrl":"10.1002/ghg.2352","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigated the use of Moroccan diatomite in its raw and calcined forms in mortar as a partial replacement for cement to reduce the primary energy consumption in cement production. For this purpose, a thermophysical and mechanical study was carried out. In addition, the energy consumption and global warming potential (GWP) associated with the production of these materials were assessed using a cradle-to-gate life cycle assessment analysis. Several samples were prepared by replacing up to 40% of the cement with diatomite, while maintaining the same sand and water content in the mortar. The study found that diatomite reduced thermal conductivity and diffusivity owing to its high insulating potential. However, calcining diatomite up to 850°C altered the quality of the produced silica, resulting in lower values compared with raw diatomite mortars. The mortars’ compressive and flexural strengths slightly decreased when diatomite was used as a substitute, with reductions of up to 10%. Calcined diatomite mortars demonstrated a higher water absorption capacity than raw diatomite mortars. The study concluded that mortars in which 40% of the cement has been partially replaced by either raw diatomite or calcined diatomite offer the most satisfactory thermal performance, while retaining sufficient mechanical strength to enable them to be classified as construction mortars. Calcined diatomite mortars offer favorable performance compared to raw diatomite, suggesting the potential of calcined diatomite to reduce the environmental impact and improve mortar quality, opening prospects for environment-friendly mortars and cost optimization.</p>\u0000 </div>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"15 3","pages":"394-408"},"PeriodicalIF":2.8,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144315263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}