Cleaner Engineering and Technology最新文献

{"title":"Life cycle inventories for aviation: Background data, shortcomings, and improvements","authors":"Joana Albano ,&nbsp;Antonia Rahn ,&nbsp;Jens Bachmann ,&nbsp;Gerko Wende","doi":"10.1016/j.clet.2024.100813","DOIUrl":"10.1016/j.clet.2024.100813","url":null,"abstract":"<div><div>In the context of growing environmental awareness and a drive towards sustainable aviation, Life Cycle Assessment (LCA) emerges as a pivotal tool for evaluating the environmental impacts of current and novel technologies. This paper focuses on Life Cycle Assessment within the aviation sector, with a specific emphasis on Life Cycle Inventories (LCIs) and databases. Recognizing a relevant data gap in existing databases regarding aircraft maintenance, our study seeks to address this limitation. A maintenance, repair and overhaul use-case is proposed as an illustrative example to enrich underrepresented data in LCIs. Our methodology considers the entire service life of aircraft, building a cumulative life cycle inventory in a cradle-to-gate approach. Geographical representativeness is ensured for maintenance activities conducted in Germany, with extrapolation applied across Europe where necessary. Our findings underscore the need to differentiate maintenance activities between aircraft components and engines, as well as the importance of considering various flight scenarios, ranging from short to long haul. This paper contributes to the advancement of LCA in aviation by providing insights into improving data accuracy and completeness. It also delves into how and why data generation is possible and what are the necessary data improvements within the topic. This paper is aimed at LCA practitioners in both research and industry, thus fostering sustainable practices in aviation.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"22 ","pages":"Article 100813"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418843","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}

{"title":"Environmental and economic impact assessment of hydrophobic treatment of cotton using low-pressure-low-temperature plasma","authors":"Antonia Vyrkou ,&nbsp;Athanasios Angelis-Dimakis ,&nbsp;Tim Smith ,&nbsp;Parikshit Goswami","doi":"10.1016/j.clet.2024.100814","DOIUrl":"10.1016/j.clet.2024.100814","url":null,"abstract":"<div><div>The purpose of this paper is to compare the environmental impact, using Life Cycle Assessment, and the total cost of two hydrophobic fluorocarbon treatment methods: a novel plasma surface modification technique and a traditional pad-dry-curing treatment of fabric. These two techniques have been chosen as two alternatives, with the pad-dry curing being a traditional liquid-based treatment and the plasma treatment a novel gas-based treatment. Such a comparison is a novel effort and will provide to the relevant industrial stakeholders an indication about the sustainability and the financial viability of the plasma treatment technique in comparison to the current state-of-the-art.</div><div>The Life Cycle Inventory for both techniques has been compiled based on experiments performed at the Technical Textiles Research Centre, using lab scale equipment. The environmental impact has been assessed using the Environmental Footprint 3.0 method and is expressed in micro ecopoints (μPt). The findings have revealed that for plasma treatment (duration of 5 min using 13 cm³/min of C₂F₆), the environmental footprint is 47% lower than the conventional pad-dry-curing (8.95 μPt per 10 g of treated cotton compared to 18.9 μPt) and the total treatment cost is 81% lower (£1.03 per 10 g of treated cotton compared to £5.47 using pad-dry-curing). The most significant contributor to the environmental performance of the plasma treatment is the electricity consumption, thus a minimization of the treatment time without losing the functionality of the process, and the subsequent operating expenses, will lead to the optimal plasma treatment conditions.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"22 ","pages":"Article 100814"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418841","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}

{"title":"Enhancement of CO2 removal from flue gas in an oscillatory baffled column using potassium carbonate solution","authors":"Omar I. Farhan ,&nbsp;Harith N. Mohammed ,&nbsp;Safaa M.R. Ahmed ,&nbsp;Saba A. Gheni","doi":"10.1016/j.clet.2024.100815","DOIUrl":"10.1016/j.clet.2024.100815","url":null,"abstract":"<div><div>One of the efficient methods for reducing CO₂ emissions from flue gas streams in oil refineries and power plants is the CO₂absorption process using alkali solution. Potassium carbonate (K₂CO₃) solution, as CO₂ absorbent, was used in the present study due to its high CO₂ absorption capacity. However, K₂CO₃ has a drawback which is represented by its slow reaction with CO₂. To overcome this issue, an oscillatory baffled column (OBC) was utilized as a contactor to maintain a high degree of mixing in the CO₂ absorption system and thereby increasing the reaction rate between K₂CO₃ and CO₂ as well as enhancing the mass transfer rate. In this study the effect of different operation conditions of the process namely; inlet flue gas flow rate (15 % (v/v) CO₂ balanced with N₂) and oscillation conditions on CO₂ absorption in a semi-batch OBC were investigated. The experiments were performed with range of modified Reynolds Number of Oscillation (<span><math><mrow><msubsup><mrow><mi>R</mi><mi>e</mi></mrow><mi>o</mi><mo>′</mo></msubsup></mrow></math></span> = 0⎼1450) and aeration rates (0⎼1 <em>vvm</em>) using K₂CO₃ (100 g/L, 0.72 M)0.1.8–3.5-fold of enhancement of CO₂ absorption rates was achieved by using OBC with respect to that obtained by baffled column (BC) (only baffles without oscillation) and plane bubble column (PBC) (without baffles and oscillation), respectively.</div><div>The use of K₂CO₃ as a solvent in an oscillating reactor (OBR) to remove CO₂ represents a new method due to the high reactivity of K₂CO₃ with CO₂, forming stable bicarbonate and carbonate compounds. OBR's enhanced mixing capabilities improve mass transfer rates and reaction efficiency, allowing for more effective CO₂ capture compared to conventional reactors. This combination leverages the strengths of both the chemical reactivity of K₂CO₃ and the mechanical benefits of OBR, potentially leading to more efficient and scalable CO₂ removal processes.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"23 ","pages":"Article 100815"},"PeriodicalIF":5.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142426879","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}

{"title":"Seidlitzia rosmarinus as a multipurpose environmentally friendly alkali in simultaneous dyeing and nanofinishing of polyester fabric: ZnO-NPs synthesis, carrier-free dyeing, and reduction clearing","authors":"Seyed Mohammad Taher Shahin ,&nbsp;Majid Montazer ,&nbsp;Mahnaz Mahmoudi Rad","doi":"10.1016/j.clet.2024.100811","DOIUrl":"10.1016/j.clet.2024.100811","url":null,"abstract":"<div><div>A multipurpose product could be produced by synthesizing metal oxides and dyeing the fabric. However, to achieve better, cleaner results while consuming less energy, it is ideal to shorten the time and reduce costs by simultaneously creating nanoparticles and dyeing. This work facilitates carrier-free dyeing of polyester fabric and the synthesis of ZnO-NPs using Kelyab as a green alkali. The remarkable results demonstrated reduced bending length, i.e., a softer handle, higher air permeability, and tensile strength, longer resistance in alkaline conditions, and comparable color strength and fastness. Moreover, the after-treatment, the last treatment step on the finished or dyed fabric, pertains to the reduction clearing. It is essential for dyed PET fabric, given its significance in colorimetric characteristics and other fastness attributes, particularly washing. Thus, it is necessary to develop innovative techniques to achieve these objectives without using harmful chemicals. Kelyab, as an environmentally safe reducing agent, produced comparable results to those of the conventional method, especially in color strength. In addition, air plasma was applied as a surface activation and green pre-treatment, resulting in the highest color and tensile strength. The prepared samples were examined using FT-IR, XRD, and FESEM, among other tests. Using fewer chemicals (50% lower) in the reduction clearing, saving time and energy for preparing reduction solution, and lowering the requirement for waste-water treatment in the simultaneous nanosynthesis and dyeing are the novelties of the introduced processing that can replace conventional method in dyeing, post-dyeing, and nanofinishing treatments.</div></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"22 ","pages":"Article 100811"},"PeriodicalIF":5.3,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142318427","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}

{"title":"Synergic process of molybdenum recovery and ceramic preparation for clean and efficient utilization of industrial leaching residues","authors":"Guihong Han ,&nbsp;Yanghao Feng ,&nbsp;Mengyu You ,&nbsp;Hu Sun ,&nbsp;Shengpeng Su ,&nbsp;Bingbing Liu ,&nbsp;Yanfang Huang","doi":"10.1016/j.clet.2024.100809","DOIUrl":"10.1016/j.clet.2024.100809","url":null,"abstract":"<div><p>Ammonia-leaching residues of roasted molybdenite concentrates are intractable wastes and are mostly stockpiled in factories. Common treatments suffer from low Mo recovery and secondary pollution. This study has developed a synergistic process involving a single-step roasting with the addition of Al₂O₃ and MoO₃ to recover Mo and simultaneously prepare porous refractories from the residues containing 5.6% Mo. The Mo separation efficiency, ceramic properties, and thermal behaviors—including chemical reactions, melting transformations, ceramic structure evolutions, and Mo species migrations—were comprehensively investigated. It was found that the addition of Al₂O₃ facilitated CaMoO₄ decomposition to release volatile MoO₃, thus promoting Mo recovery. The mullite started to form at about 900 °C, grew into whiskers, and further into interconnected clusters, under the catalytic effect of liquid MoO₃ and the sintering effect of glassy melt. Liquid MoO₃ was scattered on the outer surface of whisker clusters, achieving a high separation efficiency of over 98% after roasting at 1300 °C for 150 min. Meanwhile, a ceramic with a high porosity of 64.2% and a high compressive strength of 21.2 MPa was obtained, exhibiting promise for serving as a high-temperature insulation refractory. Overall, this study presents a novel approach for both the profound recovery of Mo and the value-added utilization of gangue minerals derived from CaMoO₄-bearing wastes.</p></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"22 ","pages":"Article 100809"},"PeriodicalIF":5.3,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666790824000892/pdfft?md5=b3582a9bd468389e5693e375d93f43cc&pid=1-s2.0-S2666790824000892-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142274477","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}

{"title":"Graph theory-enhanced integrated distribution network reconfiguration and distributed generation planning: A comparative techno-economic and environmental impacts analysis","authors":"Sunday Adeleke Salimon ,&nbsp;Ifeoluwa Olajide Fajinmi ,&nbsp;Oludamilare Bode Adewuyi ,&nbsp;Anand Kumar Pandey ,&nbsp;Oluwaseyi Wasiu Adebiyi ,&nbsp;Hossam Kotb","doi":"10.1016/j.clet.2024.100808","DOIUrl":"10.1016/j.clet.2024.100808","url":null,"abstract":"<div><p>In today's world, eco-friendly solutions are crucial for efficient power delivery and assessing their corresponding economic and environmental benefits is essential. As innovators, it is also imperative to continually improve on existing techniques to solve a problem. Evaluating the existing literature in this area of study, gaps of improving the optimization techniques by reducing the amount of infeasible configurations the reconfiguration procedure encounters was established, additionally, the need to utilize distributed generations that significantly reduce carbon footprint in the environment was also ascertained. Hence, this paper presents an effective integration method for the simultaneous reconfiguration of Radial Distribution Networks (RDNs) and Photovoltaic (PV) DGs allocation, considering the tripodal issues of cost, operational efficiency, and environmental sustainability. A modification of the adaptive mountain gazelle optimizer (AMGO) enhanced with graph theory is deployed for the optimization procedures. The crucial feature of the proposed approach is the reduction of unfeasible configurations throughout the optimization procedure toward satisfying the network's radiality constraints, achieving consistent convergence and reduced computation time. The technical benefits are active power loss minimization, voltage stability, and voltage profile improvement. The economic benefits are analyzed by estimating the purchased power, the associated cost of power losses, and the cost of DGs and switches over a planning period of 20 years. The consequent environmental benefits are analyzed in detail, highlighting the significant reduction in pollutant emissions. The proposed model was tested on the IEEE 33- and 69-bus RDN, considering several scenarios, including synchronous network reconfiguration and DG installations. From the results procured, the simultaneous network reconfiguration and DG allocation provided better outcomes, yielding minimum active power loss of 35.36 kW, minimum voltage of 0.9541 p.u., voltage stability index of 1.9936 p.u., total planning cost of $3.456 million, and emission of 1.744 million lb/hr, respectively, for the 33-bus systems. The corresponding value for the 69-bus system is 32.57 kW, 0.9832 p.u., 2.3847 p.u., $ 2.524 million, and 2.53 million lb/hr, respectively. The proposed model was compared with other reported techniques for performance validation, and its efficacy and superior performance was established.</p></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"22 ","pages":"Article 100808"},"PeriodicalIF":5.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666790824000880/pdfft?md5=fcc8cbf0bfee9b12e13faff055a3884d&pid=1-s2.0-S2666790824000880-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241886","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}

{"title":"Assessing the durability of diverse leather tanning techniques for the manufacturing of leather goods through artificial aging processes","authors":"Agnès Thomasset ,&nbsp;Stéphane Benayoun","doi":"10.1016/j.clet.2024.100807","DOIUrl":"10.1016/j.clet.2024.100807","url":null,"abstract":"<div><p>In the context of the growing demand for sustainable consumption, especially in the fashion industry, leather remains an intriguing material. Its durability and quality not only ensure the longevity of products but also support the rise of practices like second-hand use and upcycling. This study evaluates the longevity of tanning alternatives - triazine-based and a combination of synthetic and vegetable tannins - compared to the widely used chrome tanning. Artificial aging processes, incorporating heat, humidity, UV exposure, and microbial conditions, were applied to leathers tanned with the three methods. Physico-mechanical measurements, commonly specified in industrial standards, were conducted alongside chemical analyses to evaluate potential degradations associated with chrome tanning as the reference. The aging processes impacted leather performances, but finished leathers remained suitable for applications. Indeed, results on finished leathers indicated minimal degradation after aging, emphasizing the importance of the protective layer for longevity. Considerations include adapting finishing to surface structures and addressing potential stiffness in triazine-tanned leather, necessitating further exploration.</p></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"22 ","pages":"Article 100807"},"PeriodicalIF":5.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666790824000879/pdfft?md5=11c168d509c0f7d9c062e7909e0f064d&pid=1-s2.0-S2666790824000879-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142240670","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}

{"title":"Microfibres and coliforms determination and removal from wastewater treatment effluent","authors":"Jolanda Rihter Pikl ,&nbsp;Aleksandra Lobnik ,&nbsp;Milenko Roš ,&nbsp;Hakim El Khiar ,&nbsp;Nataša Uranjek","doi":"10.1016/j.clet.2024.100806","DOIUrl":"10.1016/j.clet.2024.100806","url":null,"abstract":"<div><p>The research aim was to remove as many microfibres, microplastics and harmful bacteria as possible from the polluted water to produce suitable water for reuse. The test water was the effluent from the municipal wastewater treatment plant in Shalek Valley. A pilot plant with a ceramic SiC filter for membrane filtration and ozonation of filtered water was set up to remove suspended solids, micro-fibres, microplastics, and harmful microorganisms. The Microfibers Detection System was developed to identify microfibers on-site. The results showed that the microfiltration system combined with ozone treatment effectively removed total suspended solids, microfibres, microplastics and microorganisms. A detection system method for identifying microfibres and microplastic particles was used to determine how many microfibres and microorganisms were identified by membrane filtration and ozonation. The study showed that membrane filtration successfully removed all microfibres, 88% of total coliforms and 93% of <em>E. coli</em>. After additional ozonation, we achieved a 100% removal rate of total coliforms and a 100% removal rate of <em>E. coli</em>. The treated water (effluent from the municipal wastewater treatment plant) can be used for specific purposes, such as agricultural irrigation or enhancing bathing waters near the plant's water effluent.</p></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"22 ","pages":"Article 100806"},"PeriodicalIF":5.3,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666790824000867/pdfft?md5=a2ef6ef2ecce3bd0b16ccc4721f2640a&pid=1-s2.0-S2666790824000867-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142172643","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}

{"title":"Cloud point extraction of phenolics from sugarcane juice improves its usability as a carbon source in bioprocessing of lipids from Rhodosporidium kratochvilovae MTCC247","authors":"Krushna Gharat,&nbsp;Kashyap Dharini,&nbsp;Kshitija Japhalekar,&nbsp;Harsha G. Madhankar,&nbsp;Rekha S. Singhal","doi":"10.1016/j.clet.2024.100799","DOIUrl":"10.1016/j.clet.2024.100799","url":null,"abstract":"<div><p>Sugarcane juice (ScJ) is a natural and renewable reservoir of sucrose, which makes it a sustainable carbon source for fermentative production of microbial products. This study encompasses the production of an oleaginous yeast (OY), <em>Rhodosporidium kratochvilovae</em> MTCC247 on ScJ-based nutrient medium and optimization of the fermentation process. Initially, ScJ was clarified by cloud point extraction (CPE) of polyphenols using Box Behnken Design resulting in 90.88 % reduction in polyphenols. After individual optimization of fermentation parameters such as initial pH, incubation temperature, agitation speed, aeration ratio and inoculum size, suitability of clarified ScJ as a sole carbon source was established by incorporating it in a fermentation medium to produce OY. Using a rotatable central composite design, optimal concentrations of medium components were determined to achieve maximum biomass production of 23.13 <strong>±</strong> 1.72 g/L and maximum lipid production of 7.15 <strong>±</strong> 0.377 g/L. The dynamics of fatty acid pool in OY were studied throughout fermentation. For efficient lipid extraction, a combination of mechanical method (high-speed homogenization) and chemical methods (acid treatment) could recover 93.14 ± 12 % lipids. Thus, this study illustrates the potential of clarified ScJ as a sustainable carbon source in bioprocessing of lipids from OY.</p></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"22 ","pages":"Article 100799"},"PeriodicalIF":5.3,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266679082400079X/pdfft?md5=1b26650a2b9c6dc88b02931ec9b7a14e&pid=1-s2.0-S266679082400079X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142158396","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}

{"title":"Assessment of CO2 capture and storage onboard LNG vessels driven by energy recovery from engine exhaust","authors":"Jaafar Ballout ,&nbsp;Ma'moun Al-Rawashdeh ,&nbsp;Dhabia Al-Mohannadi ,&nbsp;Joseph Rousseau ,&nbsp;Gareth Burton ,&nbsp;Patrick Linke","doi":"10.1016/j.clet.2024.100802","DOIUrl":"10.1016/j.clet.2024.100802","url":null,"abstract":"<div><p>The pressing need to significantly reduce global CO₂ emissions requires the decarbonization of the shipping industry. Currently, shipping relies on fossil fuels with a shift from heavy oil to liquefied natural gas. The main engine is the primary energy user onboard vessels, and its exhaust is the main CO₂ emission source. A potential path to reduce emissions onboard vessels is the capture, compression, and storage of CO₂ from the exhaust gases. This requires effective integration across the engine, the capture technology, the CO₂ compression, cooling, and storage. The integration of four alternative capture technology options is conceptually explored and assessed: chemical absorption, membranes, temperature swing adsorption, and cryogenic distillation. Integration schemes are developed for each of the four technologies that achieve carbon capture, compression, and storage driven by the exhaust gas waste heat as the only energy source. Heat and power requirements are met through heat integration and heat-to-power conversions using organic Rankine cycles (ORCs). The study was performed on an LNG vessel using LNG fuel in its main engine. Thermal capture technologies (absorption and adsorption) are observed to significantly outperform their alternatives (membranes and cryogenic distillation) and capture, compress, and store more than twice the amount of CO₂ emissions from the engine exhaust stream. Finally, the proposed integration schemes resulted in self-sustainable onboard capture systems without combusting additional fuel.</p></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":"22 ","pages":"Article 100802"},"PeriodicalIF":5.3,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266679082400082X/pdfft?md5=385054562efbfc44ac3011361404bff7&pid=1-s2.0-S266679082400082X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164699","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}