International Journal of Greenhouse Gas Control最新文献

{"title":"Can section 45Q tax credit foster decarbonization? A case study of geologic carbon storage at Acid Gas Injection wells in the Permian Basin","authors":"Shruti K. Mishra ,&nbsp;Miles A. Henderson ,&nbsp;David Jiawei Tu ,&nbsp;Alexander Erwin ,&nbsp;Robert C. Trentham ,&nbsp;Dietrich H. Earnhart ,&nbsp;Jean-Lucien Fonquergne ,&nbsp;Hannah Gagarin ,&nbsp;Jason E Heath","doi":"10.1016/j.ijggc.2024.104284","DOIUrl":"10.1016/j.ijggc.2024.104284","url":null,"abstract":"<div><div>Carbon capture, utilization, and storage (CCUS) is an important pathway for meeting climate mitigation goals. While the economic viability of CCUS is well understood, previous studies do not evaluate the economic feasibility of carbon capture and storage (CCS) in the Permian Basin specifically regarding the new Section 45Q tax credits. We developed a technoeconomic analysis method, evaluated the economic feasibility of CCS at the acid gas injection (AGI) wells, and assessed the implication of Section 45Q tax credits for CCS at the AGIs. We find that the compressors, well depth, and the permit and monitoring costs drive the facility costs. Compressors are the predominant contributors to capital and operating expenditure driving the levelized cost of CO₂ storage. Strategic cost reduction measures identified include 1) sourcing of low-cost electricity and 2) optimizing operational efficiency in well operations. In evaluating the impact of the tax credits on CCS projects, facility scale proved decisive. We found that facilities with an annual injection rate exceeding 10,000 MT storage capacity demonstrate economic viability contingent upon the procurement of inputs at the least cost. The new construction of AGI wells were found to be economically viable at a storage capacity of 100,000 MT. The basin is heavily focused on CCUS (tax credit – $65/MT CO₂), which overshadows CCS ($85/MT CO₂) opportunities. Balancing the dual objectives of CCS and CCUS requires planning and coordination for optimal resource and pore space utilization to attain the basin's decarbonization potential. We also found that CCS on AGI is a lower cost CCS option as compared to CCS on other industries.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"140 ","pages":"Article 104284"},"PeriodicalIF":4.6,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mathematical modeling and economic optimization of a piperazine-based post-combustion carbon capture process","authors":"Ilayda Akkor ,&nbsp;Shachit S. Iyer ,&nbsp;John Dowdle ,&nbsp;Le Wang ,&nbsp;Chrysanthos E. Gounaris","doi":"10.1016/j.ijggc.2024.104282","DOIUrl":"10.1016/j.ijggc.2024.104282","url":null,"abstract":"<div><div>Given the urgent need to mitigate increasing CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> emissions and alleviate the climate crisis, amine-based post-combustion capture (PCC) processes have emerged as a prominent method to reduce the emissions from industrial point sources. While many technological advancements have been introduced for such processes, leading to decreased energy requirements for capture, there are still only a few commercial installations because of their high costs. Therefore, these processes can benefit from process optimization to enhance their economic viability. This work presents a new open-source, rate-based, equation-oriented model of a novel PCC process that uses piperazine as the amine solvent. The model was implemented in Python, in accordance with the Pyomo-based <em>IDAES</em> modeling and optimization framework. The proposed nonlinear model can be used for both simulation and optimization. To ensure its robust convergence, we further devise a rigorous, multi-level cascade initialization scheme, whose principles can further be applied towards the initialization of similar process models. The model was validated with published pilot plant data and then optimized for pilot and commercial scales with an economic objective that considers both capital and operational costs. Results show that process optimization can indeed improve the economics of this technology, leading to 15.6% yearly savings at the pilot scale compared to the baseline case considered in the study. Additional parametric analyses were performed to understand how the flue gas flowrate and CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> concentration, as well as the target capture rate, affects the cost of capture.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"140 ","pages":"Article 104282"},"PeriodicalIF":4.6,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142746280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights from FEED studies for retrofitting existing fossil power plants with carbon capture technology","authors":"Sally Homsy ,&nbsp;Tommy Schmitt ,&nbsp;Sarah Leptinsky ,&nbsp;Hari Mantripragada ,&nbsp;Alexander Zoelle ,&nbsp;Timothy Fout ,&nbsp;Travis Shultz ,&nbsp;Ronald Munson ,&nbsp;Dan Hancu ,&nbsp;Nagamani Gavvalapalli ,&nbsp;Jeffrey Hoffmann ,&nbsp;Gregory Hackett","doi":"10.1016/j.ijggc.2024.104268","DOIUrl":"10.1016/j.ijggc.2024.104268","url":null,"abstract":"<div><div>Recent United States Department of Energy (DOE) sponsored front-end engineering design (FEED) studies for retrofitting existing fossil-fueled power plants with state-of-the-art carbon capture technology contain previously overlooked real-world design considerations for near-term deployment of carbon capture. Insights from examining seven recently published FEED study reports are summarized in this paper. This includes a discussion of the design, performance, and cost implications associated with (1) location-specific considerations such as water availability, land availability, and accessibility; (2) host-plant-specific factors such as flue gas specifications, allowable degree of integration between the capture system and host plant, and operational mode; and (3) miscellaneous factors such as market conditions, permitting requirements, and business case incentives. This manuscript highlights (1) water availability as a key design and cost driver, with host plant steam extraction increasing capture system cooling water availability, (2) modularization and constructability impacts on the number of capture trains, (3) the impacts of host plant operational mode and capacity factor on the business case for installing capture, and (4) the merit of continued research, development, and demonstration efforts addressing steam extraction, host plant tie-in at the stack, solvent reclamation and air emissions control.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"140 ","pages":"Article 104268"},"PeriodicalIF":4.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Putting the genie back in the bottle: Decarbonizing petroleum with direct air capture and enhanced oil recovery","authors":"Jayant Singh ,&nbsp;Udayan Singh ,&nbsp;Gonzalo Rodriguez Garcia ,&nbsp;Vikram Vishal ,&nbsp;Robert Anex","doi":"10.1016/j.ijggc.2024.104281","DOIUrl":"10.1016/j.ijggc.2024.104281","url":null,"abstract":"<div><div>This study reports the cradle-to-wheel life cycle greenhouse gas (GHG) emissions resulting from enhanced oil recovery (EOR) using CO₂ sourced from direct air capture (DAC). A Monte Carlo simulation model representing variability in technology, location, and supply chain is used to model the possible range of carbon intensities (CI) of oil produced through DAC-EOR. Crude oil produced through DAC-EOR is expected to have a CI of 449 tCO₂/mbbl. With 95% confidence, the CI is between 345 tCO₂/mbbl to 553 tCO₂/mbbl. Producing net-zero GHG emission oil through DAC-EOR is thus highly improbable. An example case of DAC-EOR in the U.S. Permian Basin shows that only in the unlikely instance of the most storage efficient sites using 100% renewable energy does DAC-EOR result in “carbon-negative” oil production.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"139 ","pages":"Article 104281"},"PeriodicalIF":4.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A conceptual evaluation of the use of Ca(OH)2 for attaining carbon capture rates of 99% in the calcium looping process","authors":"Markus Secomandi ,&nbsp;Markku Nikku ,&nbsp;Borja Arias ,&nbsp;Jouni Ritvanen","doi":"10.1016/j.ijggc.2024.104279","DOIUrl":"10.1016/j.ijggc.2024.104279","url":null,"abstract":"<div><div>Calcium looping (CaL), typically capable of reducing CO₂ emissions by approximately 90%, is a technology well suited to capturing CO₂ emissions from a wide array of industrial processes. An approach in which Ca(OH)₂ is injected into the carbonator to increase the carbon capture efficiency of the CaL process to 99% was evaluated in this study using a one-and-a-half-dimensional reactor model. The effect of several key parameters was considered, including the injection flow rate, injection elevation, and the formation rate of CO₂ in the freeboard of the carbonator due to the combustion of char particles elutriated from the calciner. The main finding was that capture rates of 99% appear attainable, given that enough Ca(OH)₂ is injected and that the injection occurs at a suitable location, i.e., the sorbent is allowed sufficient residence time in the reactor.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"139 ","pages":"Article 104279"},"PeriodicalIF":4.6,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determining the dominant factors controlling mineralization in three-dimensional fracture networks","authors":"Jeffrey D. Hyman ,&nbsp;Alexander C. Murph ,&nbsp;Lawrence Boampong ,&nbsp;Alexis Navarre-Sitchler ,&nbsp;James W. Carey ,&nbsp;Phil Stauffer ,&nbsp;Hari S. Viswanathan","doi":"10.1016/j.ijggc.2024.104265","DOIUrl":"10.1016/j.ijggc.2024.104265","url":null,"abstract":"<div><div>One methodology to reduce CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> in the atmosphere is inject it into subsurface systems where the ambient conditions are favorable for the carbon to precipitate/mineralize thereby permanently trapping it. Prospective host rocks are relatively impermeable when intact, so the flow of fluids and associated reactive transport therein primarily occurs within and through interconnected fracture networks that provide lower hydraulic resistance. Although critically important for the success of carbon mineralization, the characterization of the interplay between network geostructure, geochemical reactions, and hydrology on the total extent of mineralization is poorly understood. To this end, a set of reactive transport simulations modeling coupled dissolution and precipitation under a variety for hydrological and geochemical conditions are performed to characterize their impact on mineralization in three-dimensional fractured media. The generated data set is used to perform a robust sensitivity analysis and characterize how model parameters, as well as the network structure, affect the total amount of precipitated mineral. It is observed that the reaction rate constant of gypsum, the volume of the network, the incoming volumetric flow rate, and initial porosity showed the strongest impact on the maximum amount of mineralization in the system throughout the simulations.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"139 ","pages":"Article 104265"},"PeriodicalIF":4.6,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced cation release via acid pretreatment for gigaton-scale geologic CO2 sequestration in basalt","authors":"Qin Zhang ,&nbsp;Adedapo N. Awolayo ,&nbsp;Patrick R. Phelps ,&nbsp;Shafik Vadsariya ,&nbsp;Christiaan T. Laureijs ,&nbsp;Matthew D. Eisaman ,&nbsp;Benjamin M. Tutolo","doi":"10.1016/j.ijggc.2024.104266","DOIUrl":"10.1016/j.ijggc.2024.104266","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Basalt-based CO&lt;sub&gt;2&lt;/sub&gt; mineralization offers gigaton-scale capacity for sequestering anthropogenic CO&lt;sub&gt;2&lt;/sub&gt;, but it faces challenges such as low cation productivity and formation of pore-clogging clays. A potential solution is to treat the basalt with aqueous acids such as HCl, a by-product of some electrochemical CO&lt;sub&gt;2&lt;/sub&gt; removal processes. To date, our understanding of basalt-acid interactions is limited to extrapolations from higher pH environments, and therefore little is known about the mechanisms of the reaction at acidic conditions. To address this knowledge gap, far-from-equilibrium dissolution rates of basaltic glass and crystalline basalt were measured in mixed flow reactors at pH 0 to 9, and temperatures from 23 to 60 °C, with a specific focus on the low-pH region. Measured geometric surface area-normalized dissolution rates can be described according to: &lt;span&gt;&lt;span&gt;&lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mi&gt;k&lt;/mi&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;6&lt;/mn&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mi&gt;⋅&lt;/mi&gt;&lt;mo&gt;exp&lt;/mo&gt;&lt;mfenced&gt;&lt;mrow&gt;&lt;mfenced&gt;&lt;mrow&gt;&lt;mfrac&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;42&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;/mrow&gt;&lt;/mfrac&gt;&lt;/mrow&gt;&lt;/mfenced&gt;&lt;mi&gt;⋅&lt;/mi&gt;&lt;mfenced&gt;&lt;mrow&gt;&lt;mfrac&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;/mfrac&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mfrac&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;r&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/mfrac&gt;&lt;/mrow&gt;&lt;/mfenced&gt;&lt;/mrow&gt;&lt;/mfenced&gt;&lt;mi&gt;⋅&lt;/mi&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;a&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;H&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;81&lt;/mn&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;02&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;10&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;9&lt;/mn&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mi&gt;⋅&lt;/mi&gt;&lt;mo&gt;exp&lt;/mo&gt;&lt;mfenced&gt;&lt;mrow&gt;&lt;mfenced&gt;&lt;mrow&gt;&lt;mfrac&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;32&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;/mrow&gt;&lt;/mfrac&gt;&lt;/mrow&gt;&lt;/mfenced&gt;&lt;mi&gt;⋅&lt;/mi&gt;&lt;mfenced&gt;&lt;mrow&gt;&lt;mfrac&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;/mfrac&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mfrac&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;r&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/mfrac&gt;&lt;/mrow&gt;&lt;/mfenced&gt;&lt;/mrow&gt;&lt;/mfenced&gt;&lt;mi&gt;⋅&lt;/mi&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;a&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;H&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;15&lt;/mn&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;01&lt;/mn&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt; where &lt;span&gt;&lt;math&gt;&lt;mi&gt;k&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt; is the rate constant (mol&lt;!--&gt; &lt;!--&gt;m&lt;sup&gt;−2&lt;/sup&gt; &lt;!--&gt;s&lt;sup&gt;−1&lt;/sup&gt;) at any temperature &lt;span&gt;&lt;math&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt; (Kelvin) and &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mtext&gt;H&lt;/mtext&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; a","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"139 ","pages":"Article 104266"},"PeriodicalIF":4.6,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conceptual design and evaluation of membrane gas separation-based CO2 recovery unit for CO2 electrolyzers employing anion exchange membranes","authors":"Hyunshin Lee ,&nbsp;Wonsuk Chung ,&nbsp;Kosan Roh","doi":"10.1016/j.ijggc.2024.104278","DOIUrl":"10.1016/j.ijggc.2024.104278","url":null,"abstract":"<div><div>Anion exchange membrane (AEM)-based electrolysis for CO₂ reduction reaction (CO₂RR) has garnered attention as a promising carbon dioxide utilization technology due to its superior energy efficiency at high current densities. The major drawback of AEM-based electrolysis for CO₂RR is CO₂ crossover, which leads to the loss of introduced CO₂ feedstock and thus detrimentally affects the process's overall economic and environmental viability. We design a 3-stage membrane-based CO₂ recovery unit to capture CO₂ from the mixture of CO₂ and O₂ discharged from the anode side of AEM-based CO₂ electrolyzers. The membrane area is optimized via a hybrid of genetic algorithm and ‘fmincon’ in MATLAB. The estimated CO₂ capture cost ranges from 43.3 to 109.3 USD/tCO₂, which is economically comparable to piperazine-based amine scrubbing units when recovering CO₂ at a purity of up to 99.5 mol.% under a CO₂/O₂ molar ratio of 1.5∼2. The carbon footprint of the designed process ranges from −0.936 to −0.838 tCO₂eq/tCO₂-captured, indicating superior environmental performance compared to those of the piperazine-based amine scrubbing units.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"139 ","pages":"Article 104278"},"PeriodicalIF":4.6,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seismic monitoring of CCS with active and passive data: A synthetic feasibility study based on Pelican site, Australia","authors":"Mrinal Sinha ,&nbsp;Erdinc Saygin ,&nbsp;Andrew S. Ross ,&nbsp;Ludovic Ricard","doi":"10.1016/j.ijggc.2024.104277","DOIUrl":"10.1016/j.ijggc.2024.104277","url":null,"abstract":"<div><div>Carbon capture and storage (CCS) is forecast to play a significant role towards CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> emissions reduction. Cost-effective and simplified monitoring will be essential for rapid adoption and growth of CCS. Seismic imaging methods are regularly utilized to monitor low-velocity anomalies generated by injection of CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> in the subsurface. In this study we generate active and passive synthetic seismic datasets at different stages of CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> injection in the subsurface based on geologically constrained subsurface models of the Pelican storage site in the Gippsland Basin, Australia. We apply full waveform inversion (FWI) and wave-equation dispersion (WD) inversion to seafloor deployed distributed acoustic sensing (DAS) data to reconstruct the low-velocity anomalies. We model both strain (DAS) and displacement datasets for the active data component of the study and show that they result in similar reconstruction of the CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> anomaly. FWI based time-lapse imaging of active data yields the most accurate results. However, this approach is expensive and also suffers from complex issues because of the near-onshore location of the storage site. Alternatively inverting passive data results in only minor differences, but can still effectively monitor changes in the subsurface, and assist in monitoring the CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> plume at the reservoir depth. Furthermore, we demonstrate the capability of WD for inverting Scholte-waves derived from ambient noise for shallow detection of CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> in the unlikely event of a leakage. Therefore, we propose a mixed mode monitoring strategy where passive data is utilized for routine monitoring while active surveys are deployed only when further investigation is required.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"139 ","pages":"Article 104277"},"PeriodicalIF":4.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on the corrosion behavior of wellbore cement with a leaking channel under different acidic environments","authors":"Manguang Gan ,&nbsp;Liwei Zhang ,&nbsp;Yan Wang ,&nbsp;Qinglong Qin ,&nbsp;Ting Xiao ,&nbsp;Yue Yin ,&nbsp;Hanwen Wang","doi":"10.1016/j.ijggc.2024.104267","DOIUrl":"10.1016/j.ijggc.2024.104267","url":null,"abstract":"<div><div>In the scenario of geologic CO₂ storage, the injection of CO₂ can create a carbonic acid-rich environment in the reservoir, and Cl^-- and SO₄^2--rich low-pH environments may form in the reservoir if the reservoir brine contains high concentrations of Cl^- and SO₄^2-. The analysis of morphological changes in wellbore cement containing leakage channels before and after the reaction in different acidic environments is crucial for assessing the risk of CO₂ leakage along the internal cracks of wellbore cement. This study characterizes the morphological and structural changes of wellbore cement with a leaking channel before and after the flow of CO₂-saturated brine and then compares the results with the structural changes of channels after exposure to HCl and H₂SO₄ solutions. The results indicate that the cement around the leaking channel dissolves, and the channel volume increases when exposed to CO₂-saturated brine. The reaction is more intense at the inlet end than at the outlet end, and some cracks form around the channel. As the HCl solution flows through the channel, a hydrate precipitate that contains calcium and aluminum forms from the inlet to the middle of the channel. This is due to the aqueous phase cations (Ca²⁺ and Al³⁺ released from the hydrated cement phases) mixing with the high pH pore fluid ahead of the acid front. Upon flow of the H₂SO₄ solution through the channel, a thin layer of precipitation forms on both the inlet and outlet ends of the channel. XRD analysis indicates that the precipitation comprises gypsum (CaSO₄·2H₂O), which forms due to the reaction between SO₄^2- in the H₂SO₄ solution and Ca²⁺ in the cement hydration product. The volume of the channel decreased after exposure to HCl and H₂SO₄ solutions, indicating that secondary precipitation resulting from the reaction between the cement and acid exceeded the cement dissolution, and the hydrochloric and sulfuric acidic environments had a limited effect on the expansion of the wellbore cement's internal channel. The experimental results of this study also indicate that in an acidic environment with the same pH, the CO₂-saturated brine is the most corrosive to wellbore cement, followed by hydrochloric acid, and sulfuric acid is the least corrosive.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"139 ","pages":"Article 104267"},"PeriodicalIF":4.6,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}