Geosystem Engineering最新文献_第3页

A study on design and the stability assessment of underground limestone mine using numerical analysis 应用数值分析方法对地下石灰岩矿山设计及稳定性评价进行了研究

IF 1.7

Geosystem Engineering Pub Date : 2023-06-12 DOI: 10.1080/12269328.2023.2218386

Donghui Kim, Gyoungman Kim, H. Baek

引用次数: 0

Numerical study on the particle distribution of coal for recovery of critical metals 煤中临界金属回收颗粒分布的数值研究

IF 1.7

Geosystem Engineering Pub Date : 2023-05-16 DOI: 10.1080/12269328.2023.2213264

V. Jha

{"title":"Numerical study on the particle distribution of coal for recovery of critical metals","authors":"V. Jha","doi":"10.1080/12269328.2023.2213264","DOIUrl":"https://doi.org/10.1080/12269328.2023.2213264","url":null,"abstract":"ABSTRACT Coal is considered to be a significant resource of critical metals and minerals. Recovery of these critical metals is considered to be highly important in terms of advancement and technology. This paper presents a numerical study of the particle size distribution of coal and its impact on the recovery of critical metals. This study uses the computational fluid dynamics (CFD) model to simulate the transport and deposition of coal particles inside a helical domain, which can be used as a device for separating particles. The numerical study , based on the particle tracing model for fluid flow and particle tracing, is used to simulate the behavior of coal particles in a slurry under different flow conditions. The transient study for a six-turn helical coil domain is analyzed for different flow velocities ranging from . The simulation results show that the particle size distribution of coal plays a crucial role in the recovery of critical metals. Additionally, the distribution of critical metals inside the domain varies with the size and density of the particles. It is observed that increasing the fluid velocity can significantly increase the recovery of critical metals. Finally, the transmission probability of particles remaining trapped inside the domain is also calculated, which could help in optimizing the helical geometry so that all the particles could come out of the flowing conduit. The number of particles coming out of the helical domain increases with the increase in flow rate. The results of the study show that the particle size distribution of coal plays a significant role in the recovery of critical metals. The findings can help guide the development of more efficient and cost-effective methods for extracting critical metals from coal.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46201436","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

Hydrometallurgical recovery of critical metals from spent Li-ion batteries using simple leaching-precipitation techniques 用简单浸出-沉淀技术从废锂离子电池中湿法回收关键金属

IF 1.7

Geosystem Engineering Pub Date : 2023-05-02 DOI: 10.1080/12269328.2023.2208124

D. K. Rajak, C. Guria, Laldeep Gope, Jahir Ahamad Jibran

引用次数: 2

Reclamation of mineral acids from various waste streams using solvent extraction technique: a review 溶剂萃取技术回收各种废物流中的矿物酸：综述

IF 1.7

Geosystem Engineering Pub Date : 2023-04-25 DOI: 10.1080/12269328.2023.2202206

Muhammad Ahmad Muhsan, A. F. Zahoor

引用次数: 0

The characteristics of CO2 front dynamic migration in low permeability sandstone oil reservoirs under different miscibility degrees 不同混相程度下低渗透砂岩油藏CO2前缘动态运移特征

IF 1.7

Geosystem Engineering Pub Date : 2023-04-13 DOI: 10.1080/12269328.2023.2199745

Yong-Su Jin, Zhilin Wang, Zhenxin Zhang, Bo Lin, Zhengjun Ge, Qidong You, Hao Chen, Xiliang Liu, Chenghao Xu, Shuaiqiang Gao, Yi Wu, Zafarullah Abro

{"title":"The characteristics of CO2 front dynamic migration in low permeability sandstone oil reservoirs under different miscibility degrees","authors":"Yong-Su Jin, Zhilin Wang, Zhenxin Zhang, Bo Lin, Zhengjun Ge, Qidong You, Hao Chen, Xiliang Liu, Chenghao Xu, Shuaiqiang Gao, Yi Wu, Zafarullah Abro","doi":"10.1080/12269328.2023.2199745","DOIUrl":"https://doi.org/10.1080/12269328.2023.2199745","url":null,"abstract":"ABSTRACT CO2 flooding is a significant technology for oil recovery, to reveal the microcosmic mechanism of CO2 flooding, CO2 slim tube experiments, long core CO2 flooding experiments, gas chromatography analysis experiments, and numerical simulations were carried out. The results show that the miscibility increase can improve the effect of dissolution and diffusion in the CO2-crude oil system, easing the CO2 finger entry phenomena, and delaying gas breakthrough time. Besides, the CO2 -crude oil interaction is enhanced by increasing the pressure difference between the injection well and the production well, which improves the oil recovery of CO2 flooding. Besides, CO2 carries the light and medium components (C4 ~ 25) forward to cross the first miscible zone, which makes the CO2-crude oil system form double miscible zones. This study reveals the rule of CO2 front and light components front under different miscibility degrees of CO2 flooding from the microscopic perspective and deepens the theory of CO2 flooding in low-permeability sandstone reservoirs.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47942547","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

Hydrometallurgical recovery of critical metals from an incinerated fly ash of municipal solid waste from western India 从印度西部城市固体废物焚烧飞灰中湿法回收关键金属

IF 1.7

Geosystem Engineering Pub Date : 2023-04-13 DOI: 10.1080/12269328.2023.2201296

Yuti Desai, R. Srivastava, V. K. Srivastava, G. Kaushik, Vinay Singh

{"title":"Hydrometallurgical recovery of critical metals from an incinerated fly ash of municipal solid waste from western India","authors":"Yuti Desai, R. Srivastava, V. K. Srivastava, G. Kaushik, Vinay Singh","doi":"10.1080/12269328.2023.2201296","DOIUrl":"https://doi.org/10.1080/12269328.2023.2201296","url":null,"abstract":"ABSTRACT The global generation of 2.2 billion tons of municipal solid waste (MSW) as a result of population growth, rapid urbanization, and industrial development has highlighted an urgent need for MSW management. Incineration is widely accepted as one alternative to landfilling; however, the recovery of heavy metals from the incinerated fly ash (IFA) before its final disposal is highly desirable to make the process sustainable. In this study, we studied the recovery of zinc and lead from typical MSW-IFA employing hydrometallurgical techniques. Sulfuric acid leaching was performed to selectively leach out zinc over the lead at the optimal condition of H2SO4 concentration = 1.5 M, temperature = 30°C, S/L ratio = 150 g/L, time = 2 h, and stirring speed = 300 rpm. The sulfate leach liquor was treated with a 5% stoichiometric excess of oxalic acid to precipitate>99% of zinc to be recovered as ZnC2O4·2 H2O. Further, the remaining lead in leach residue was subsequently leached in 50 g/L NaCl solution for 2 h yielded>94% efficiency. The dissolved lead was crystallized to recover the crystals of PbCl2. The demonstrated process leads towards the recovery of critical metals from an alternative source of MSW-IFA.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43650668","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: 1

Hydrometallurgical recycling of critical metals from spent Ni-Cd batteries with emphasis on the separation of Cd2+ over Ni2+ using D2EHPA 废镍镉电池中关键金属的湿法冶金回收，重点是D2EHPA从Ni2+中分离Cd2+

IF 1.7

Geosystem Engineering Pub Date : 2023-04-09 DOI: 10.1080/12269328.2023.2201290

{"title":"Hydrometallurgical recycling of critical metals from spent Ni-Cd batteries with emphasis on the separation of Cd2+ over Ni2+ using D2EHPA","authors":"","doi":"10.1080/12269328.2023.2201290","DOIUrl":"https://doi.org/10.1080/12269328.2023.2201290","url":null,"abstract":"ABSTRACT The present study is comprised of a hydrometallurgical process investigated for the recovery of critical metals viz. nickel (Ni) and cadmium (Cd) from spent Ni-Cd batteries with a focus on solvent extraction of Cd-ions. The leaching performed at 5 (w/v)% pulp density using 2.0 M H2SO4 with 7 (v/v)% H2O2 for 6 h duration at 90°C yielded the maximum leaching efficiency of >91% Ni and >99% Cd along with a significant quantity of Fe (>87%). Iron was subjected to hydrolytic precipitation to its complete removal (below 10 ppm in the solution) from the leach liquor at a pH of ~3.5. After that, the Ni-Cd-containing solution was contacted with di-(2-ethylhexyl) phosphoric acid (D2EHPA) to study the extraction behavior as a function of extractant concentration, equilibrium pH, and organic-to-aqueous (O:A) phase ratio. At an equilibrium pH of 3.3, a significant quantity of Ni (>18%) was co-extracted with ~73% Cd by contacting 20 (v/v)% D2EHPA, which was completely scrubbed by contacting 15 g/L CdSO4 solution at an O:A ratio of 2. The scrubbed organic containing 14.4 g/L Cd was then recovered by stripping with 1.5 M H2SO4 solution at an O:A ratio of 1, yielding >99% Cd into the aqueous phase. Further, Ni was recovered from the raffinate by adding soda ash at Na2CO3:Ni2+ ratio = 2.5, temperature = 50°C, and time = 1 h, which was analyzed to be NiCO3.2Ni(OH)2 with purity >99.9%. The experimental results showed the potential of hydrometallurgical tools for the recovery of critical metals from spent Ni-Cd batteries.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41964290","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: 3

Solvent extraction of gold from a chloride-hypochlorite leached solution of waste printed circuit boards 从氯化物-次氯酸盐浸出的废印刷电路板溶液中萃取金

IF 1.7

Geosystem Engineering Pub Date : 2023-04-06 DOI: 10.1080/12269328.2023.2199751

R. Srivastava, Nimra Ilyas

引用次数: 0

Comparative leaching of spent fluorescent lamp for extracting yttrium and europium: kinetics and optimization studies 废荧光灯浸出钇和铕的比较:动力学和优化研究

IF 1.7

Geosystem Engineering Pub Date : 2023-04-04 DOI: 10.1080/12269328.2023.2199014

S. Suman, D. K. Rajak, Ziaul Haque Ansari

{"title":"Comparative leaching of spent fluorescent lamp for extracting yttrium and europium: kinetics and optimization studies","authors":"S. Suman, D. K. Rajak, Ziaul Haque Ansari","doi":"10.1080/12269328.2023.2199014","DOIUrl":"https://doi.org/10.1080/12269328.2023.2199014","url":null,"abstract":"ABSTRACT Electronic (e-)waste viz. the spent fluorescent lamps can be a rich source of rare earth elements (REEs) for the secondary supply of them. This article reports a comparative study on mineral acid leaching and, then, compared an alkali diffusion-acid leaching process for higher efficiency of yttrium and europium. Using a direct acid leach process, 2 M HNO3 yielded a better dissolution efficiency of REEs at the moderate temperature of 60°C and in the presence of H2O2in comparison to 91% and 87% leaching efficiency with 2.0 M H2SO4. On the other hand, the alkali-fused phosphor mass leached in 2.0 M H2SO4 without H2O2 addition showed remarkable progress in dissolution efficiency, yielding >99% and >98% of yttrium and europium in the leach liquor. Furthermore, the leaching kinetics of the alkali-diffused phosphor showed the best fit with the logarithmic rate law. The apparent activation energy was calculated to be 43.3 kJ/mol and 35.1 kJ/mol for yttrium and europium, indicating two different mechanisms during the leaching process by following the chemical- and diffusion-controlled reactions, respectively.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49222769","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: 1

Experimental study on the interaction mechanism between fracturing fluid and continental shale oil reservoir 压裂液与陆相页岩油储层相互作用机理实验研究

IF 1.7

Geosystem Engineering Pub Date : 2023-03-29 DOI: 10.1080/12269328.2023.2194884

Yi-Hang Wang, Xiaoping Li, Li Yin, Kun Wang, Jing Xie, Zhi-Li Li

{"title":"Experimental study on the interaction mechanism between fracturing fluid and continental shale oil reservoir","authors":"Yi-Hang Wang, Xiaoping Li, Li Yin, Kun Wang, Jing Xie, Zhi-Li Li","doi":"10.1080/12269328.2023.2194884","DOIUrl":"https://doi.org/10.1080/12269328.2023.2194884","url":null,"abstract":"ABSTRACT Onshore shale oil is difficult to develop due to its special pore structure and low permeability characteristics. Artificial fracturing causes a large amount of fracturing fluid to intrude into the reservoir, resulting in a complex reservoir seepage pattern. Therefore, this paper aims to explore the changes in the reservoir at the macro and micro levels due to the interaction between fracturing fluids and shale oil reservoirs. For this, four rock samples from shale oil reservoirs and two fracturing fluids commonly used in the mine were used. Then, core repulsion, scanning electron microscopy, X-ray diffraction and CT scanning experiments were carried out successively. The following results were derived from our analyses. (1) Permeability of the rock samples was reduced by an average of 24.47% after replacement by fracturing fluid, while the experimental groups with larger fluid-grain sizes and well-developed fracture networks suffered more significant solid-phase damage and fluid-phase trapping. (2) Fracturing fluids have different effects on fractures at different scales; large fractures (>7.71 μm) were widened, while small fractures (<3.47 μm) were shrunk or even plugged. (3) Based on the water-sensitive effect, fracturing fluids can disperse and transport clay minerals, resulting in fluid-phase damage and an average decrease of 14.33% in clay content in the reservoir. (4) Analysis of the digital core model shows that fracturing fluid intrusion and retention can cause solid-phase damage to the reservoir matrix, with 38.14% and 60% damage to the pore and throat channels, respectively. This paper uses a combination of physical experiments and numerical analysis to investigate the interaction mechanism between fracturing fluids and shale oil reservoirs from both microscopic and macroscopic perspectives. Overall, the results of this study provide experimental support for future studies on the seepage characteristics of this type of reservoir and the design of fracturing construction schemes.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41442889","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