Geosystem Engineering最新文献_第2页

Study of the dynamics of changes in the thermal conductivity coefficient of organic deposits 有机矿床导热系数变化的动力学研究

Geosystem Engineering Pub Date : 2023-11-02 DOI: 10.1080/12269328.2023.2271918

Pavel Ilyushin, Kirill Vyatkin, Anton Kozlov

{"title":"Study of the dynamics of changes in the thermal conductivity coefficient of organic deposits","authors":"Pavel Ilyushin, Kirill Vyatkin, Anton Kozlov","doi":"10.1080/12269328.2023.2271918","DOIUrl":"https://doi.org/10.1080/12269328.2023.2271918","url":null,"abstract":"ABSTRACT Ensuring flow in an oil field is one of the most costly problems in oil production and transportation. The fight against the formation of paraffin deposits consists both in the application of methods for the prevention and removal of deposits, and in the modeling of this process. An important parameter for the application of some technologies for preventing the formation of deposits and modeling the temperature regime of the pipeline is the coefficient of thermal conductivity of these deposits. The paper presents a study of the influence of the thermal conductivity of organic deposits on the rate of their formation, measured for 5 hours at the Cold Rod installation. According to the research results, it was found that over time, the thermal conductivity of organic deposits increases, while the rate of deposit formation decreases significantly. This process is explained by an increase in temperature on the surface of deposits due to their compaction and displacement from the volume of the liquid phase. The results obtained are extremely important in modeling the process of deposit formation and modeling a number of technologies to combat them.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135975337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Treatment of a Nigerian covellite ore. Part II: extraction and purification of copper by tri-butyl-phosphate and enhanced β-diketones in kerosene 尼日利亚钴矿的处理。第二部分:用磷酸三丁酯和增强β-二酮在煤油中萃取和纯化铜

Geosystem Engineering Pub Date : 2023-10-31 DOI: 10.1080/12269328.2023.2271909

Ayo F. Balogun, Alafara A. Baba, Daud T. Olaoluwa

引用次数: 0

Advancements in exploitation of critical metals from alternative resources 从替代资源中开采关键金属的进展

Geosystem Engineering Pub Date : 2023-09-03 DOI: 10.1080/12269328.2023.2247600

Hyunjung Kim, Sadia Ilyas

引用次数: 0

Biosorption of cadmium by Enterobacter ludwigii isolated from soil contaminated with cadmium near a coal-fired power plant in Korea 韩国燃煤电厂附近镉污染土壤中分离的路德维希肠杆菌对镉的生物吸附

IF 1.7

Geosystem Engineering Pub Date : 2023-08-23 DOI: 10.1080/12269328.2023.2250347

T. Tran, Jang-Sik Lee

引用次数: 0

Phase evolutions, microstructure and physico-mechanical properties of ceramics from Meiganga kaolin: effect of Na/K2O and CaO addition Meiganga高岭土的相演变、微观结构和物理力学性能：Na/K2O和CaO添加的影响

IF 1.7

Geosystem Engineering Pub Date : 2023-08-23 DOI: 10.1080/12269328.2023.2250785

Albertine Sam-Tunsa Alarba, Nourhan Nabil Kassem, A. Nana, Japhet Darman Taypondou, Eric Ngankam Sakue, Iyamni Bintou Moctar, Mominou Nchare, Surinder Kumar

{"title":"Phase evolutions, microstructure and physico-mechanical properties of ceramics from Meiganga kaolin: effect of Na/K2O and CaO addition","authors":"Albertine Sam-Tunsa Alarba, Nourhan Nabil Kassem, A. Nana, Japhet Darman Taypondou, Eric Ngankam Sakue, Iyamni Bintou Moctar, Mominou Nchare, Surinder Kumar","doi":"10.1080/12269328.2023.2250785","DOIUrl":"https://doi.org/10.1080/12269328.2023.2250785","url":null,"abstract":"ABSTRACT This paper examines the potential use of pegmatite and marble as additives in amalgamation with Meiganga kaolin to produce stoneware products capable to resist high temperatures as well as enhancement the mechanical characteristics. Two series of ceramic products were formulated by partly replacing kaolin with 0, 3, 5 and 7 wt% of both pegmatite and marble wastes. The specimens were sintered at 1000°C, 1050°C and 1100°C. Fired ceramic samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and the microstructure of the products was determined using an environmental scanning electron microscope and energy-dispersive X-ray spectroscopy. Also, the physico-mechanical properties were evaluated. Results divulged that, the addition of pegmatite or marble to kaolin enhances the strength of the ceramic body and act as a fluxing agent by promoting vitrification and glassy phase in clay after firing. The highest flexural strength results were observed with 7 wt% of pegmatite added at 1100 °C, with an increase ~ 35% compared to the control sample. High silica and alumina contents in pegmatite fill in voids, providing densification matrices. The incorporation of pegmatite allows to obtain a ceramic with better mechanical properties and energy saving as compared by the conventional ceramic.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46358000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On shale swelling: the unrecognized role of diffusion osmosis 页岩溶胀:扩散渗透未被认识的作用

IF 1.7

Geosystem Engineering Pub Date : 2023-07-12 DOI: 10.1080/12269328.2023.2234927

T. Al-Bazali, Abdulrahman Sheref

{"title":"On shale swelling: the unrecognized role of diffusion osmosis","authors":"T. Al-Bazali, Abdulrahman Sheref","doi":"10.1080/12269328.2023.2234927","DOIUrl":"https://doi.org/10.1080/12269328.2023.2234927","url":null,"abstract":"ABSTRACT Currently, drilling operators focus on chemical osmosis as a mechanism to extract water out of shale in order to reduce its pore pressure and increase its strength, however, in doing so, the flux of hydrated ions into shale by means of diffusion osmosis and ionic diffusion is increased. Such practice may lead to an increase in shale’s pore pressure and strength reduction which will definitely negate the beneficial impact of chemical osmosis in combatting wellbore stability problems. For the first time, this work investigated the separate impact of diffusion osmosis on shale’s swelling and subsequent wellbore stability issues. The experimental set-up enabled us to isolate chemical osmosis forces which made diffusion osmosis the only force governing water exchange. Making the water activity of shale equals to that of the aqueous solution disabled chemical osmosis forces and activated ionic diffusion and diffusion osmosis owing to the imposed ionic concentration during the interaction. It was found that diffusion osmosis accompanies ionic diffusion since ions travel with their respective water clouds, also known as associated water. The transport of associated water has caused shale’s swelling in the absence of a water activity gradient (chemical osmosis). This was confirmed through gravimetric water and ion measurements conducted at the end of the linear swelling tests. Results showed that the amount of water exchanged by diffusion osmosis was immense, thus one should not ignore it when designing water-based muds for drilling highly sensitive clays. Results also showed that the amount of water exchanged correlated well with the hydrated diameter of the invading ion. Moreover, results confirmed that the swelling magnitude may be related to the mineralogical composition and cation exchange capacity of shale.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44394537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review on lithium ion battery recycling: challenges and possibilities 锂离子电池回收研究综述:挑战与可能性

IF 1.7

Geosystem Engineering Pub Date : 2023-06-27 DOI: 10.1080/12269328.2023.2228799

Namita Panda, Ana Belen Cueva-Sola, Arsyad Maulana Dzulqornain, Thriveni Thenepalli, Jin-Young Lee, Ho-Sung Yoon, R. Jyothi

引用次数: 0

Assessing the Lithium Potential of the Paleoproterozoic Rocks of the West African Craton; the Case so Far 西非克拉通古元古代岩石锂电位评价到目前为止的情况

IF 1.7

Geosystem Engineering Pub Date : 2023-06-26 DOI: 10.1080/12269328.2023.2229351

R. Kazapoe

{"title":"Assessing the Lithium Potential of the Paleoproterozoic Rocks of the West African Craton; the Case so Far","authors":"R. Kazapoe","doi":"10.1080/12269328.2023.2229351","DOIUrl":"https://doi.org/10.1080/12269328.2023.2229351","url":null,"abstract":"ABSTRACT This review presents a preliminary account of the Lithium exploration sector in the Paleoproterozoic rocks of West Africa, a relatively new field of research, and assesses its future prospects in light of the green transition-driven demand for the metal. The deposits in Ghana, Mali, Burkina Faso, Côte d’Ivoire, Senegal, and Niger form the basis of this study. The WAC predominantly possesses LCT pegmatites while a few with hybrid LCT + NYF characteristics have been reported, such as the Mangodara pegmatite district in southeastern Burkina Faso. The terrane’sanalysed pegmatite deposits contain 1.11–2.0% Li2O. The pegmatites may form as a swarm of dykes in peraluminous granites of varied composition formed from Eburnean continent – continent collision. They typically contain spodumene, quartz, feldspar, muscovite, lepidolite, beryl, tourmaline, and fluorite. Spodumene is the most prevalent lithium-bearing mineral in the deposits, with the occurence of rare secondary lepidolite and zinnwaldite. Dyke thickness, ranging from 10 to 80 metres, may affect the pegmatites’ lithium-bearing potential. Hydrothermal alteration albitizes and greisenizes pegmatitic structures. Despite the pegmatites’ varied genetic features, the Goulamina and Issia deposits in La Cote d’Ivoire have an inferred genetic link with their host granites. The WAC’s Paleoproterozoic lithium-bearing pegmatites share certain traits that make them easier to extract. Lithium exploration in West Africa depends on geological investigations, technological improvements, investor funding, and environmental concerns.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47179039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental analysis of the impact of ionic concentration and type on shale’s stability: dilute vs. concentrated salt solutions 离子浓度和类型对页岩稳定性影响的实验分析:稀盐溶液与浓盐溶液

IF 1.7

Geosystem Engineering Pub Date : 2023-06-20 DOI: 10.1080/12269328.2023.2227181

M. Alkhaldi, T. Al-Bazali

{"title":"Experimental analysis of the impact of ionic concentration and type on shale’s stability: dilute vs. concentrated salt solutions","authors":"M. Alkhaldi, T. Al-Bazali","doi":"10.1080/12269328.2023.2227181","DOIUrl":"https://doi.org/10.1080/12269328.2023.2227181","url":null,"abstract":"ABSTRACT Wellbore instability in shale formations is one of the most bothersome problems leading to significant changes in shale’s petrophysical, mechanical, and chemical properties, and could cost billions of dollars annually. Drilling fluid’s ionic composition is one of the factors affecting wellbore stability. This paper investigates the impact of chemical osmosis, ionic diffusion, and diffusion osmosis on the stability of shale, identify the critical salt concentration, and examine the impact of ionic type and concentration on shale’s stability. Experimental methods include utilisation of two different shale cores (I and II), in which each core is cut into several samples, to conduct linear expansion and gravimetric measurement tests using different salt solutions (KCl, NaCl, and CaCl2) of various salt concentrations. Results show that the critical salt concentrations of shale I and II is 8 w/w%. Chemical osmosis is found to be a reliable method for water extraction out of shale if the critical salt concentration value is not surpassed. Beyond this value, ionic diffusion and diffusion osmosis in shale I and II were adversely affecting shale’s stability through swelling. The swelling and gravimetric ions and water uptake tests showed that shale is a leaky semi-permeable membrane, and that chemical osmosis could be jeopardised by ionic transport into shale. In this study, the cation type (Na+, K+, Ca+2) that makes up the salt was varied. The impact of cation type on the stability of shale was clear as the anion type was fixed. Since both cations and anions tend to diffuse into shale in the presence of a concentration gradient, it is proposed for future work to study the combined impact of cation and anion types on shale’s stability by varying the anion and cation types.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46626465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of firing temperature on selected mechanical properties of alluvial clay blended with a limestone and kaolin mixture 烧成温度对石灰石和高岭土混合冲积粘土力学性能的影响

IF 1.7

Geosystem Engineering Pub Date : 2023-06-15 DOI: 10.1080/12269328.2023.2223212

Paulette Cathy Mengue, M. Mbessa, Ö. Cengiz, Rodrigue Cyriaque Kaze, Thamer Salman Alomayri, C. Pettang

{"title":"Influence of firing temperature on selected mechanical properties of alluvial clay blended with a limestone and kaolin mixture","authors":"Paulette Cathy Mengue, M. Mbessa, Ö. Cengiz, Rodrigue Cyriaque Kaze, Thamer Salman Alomayri, C. Pettang","doi":"10.1080/12269328.2023.2223212","DOIUrl":"https://doi.org/10.1080/12269328.2023.2223212","url":null,"abstract":"ABSTRACT The present study investigated the feasibility of low-energy and low-cost production of ceramic products from widely available alluvial clay in Batchenga, Cameroon, using low firing temperatures. A mixture consisting of 70% kaolin and 30% limestone was prepared and used as an additive in fired alluvial clay bricks. A series of samples was prepared in which the additive made up 5, 10 or 15% of the clay products, and the samples were heated at 700, 750, 800, 850 or 900 °C. The raw materials and ceramic products were characterised using x-ray diffractometry, scanning electron microscopy, bulk density, porosity, thermogravimetry and differential scanning calorimetry analysis. The results revealed that products with 10% additive showed improved mechanical performance and densification after heating at all tested temperatures. A compressive strength of 28 MPa was recorded when the product was heated at 800 °C. A drastic decrease in performance was observed for all samples heated at above 800 °C; this was likely due to the conversion of CaCO3 into CaO, resulting in the appearance of voids within the matrix that weakened the structure. This is in line with the high-water absorption and porosity values recorded. The resultant ceramic products have potential for use in engineering applications.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48237142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0