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6th International Conference on Innovative Computing, IC 2023

作者： Du, Lingpan Guo, Yongjie National Engineering Research Center of Phosphate Resources Development and Utilization Yunnan Phosphate Chemical Group Co. Ltd. Kunming650600 China

ISBN: (纸本)9789819920914

The influence of different factors on phosphorus content and quality of phosphate rock is calculated by mathematical simulation method in phosphate ore dressing. The main purpose is to find out how much phosphoric acid can be produced from a given amount of phosphoric acid ore. It also helps to find the best way to treat mine waste so that it can be processed into phosphoric acid cheaply and efficiently. In addition, it helps to determine whether the existing mine waste treatment plants are sufficiently effective in treating mine waste into phosphoric acid. The simulation method is used to determine the concentration of phosphate in the solution and can be applied to all types of mineral processing. The simulation method is based on the fact that phosphate ore will dissolve into solution at a certain rate, which depends on its chemical composition. Application: it is widely used to determine the concentration of phosphate in solution by using mathematical simulation methods such as empirical formula calculation and stoichiometric analysis. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Ores

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A review of updated S-scheme heterojunction photocatalysts

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Journal of Materials Science & Technology 2024年第10期177卷 142-180页

作者： Fangyi Li Guihua Zhu Jizhou Jiang Lang Yang Fengxia Deng Arramel Xin Li School of Environmental Ecology and Biological Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China National Engineering and Technology Research Center for Development&Utilization of Phosphate Resources Kunming 650600China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Nano Center Indonesia Jalan Raya PUSPIPTEKSouth TangerangBanten 15314Indonesia Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

Photocatalysis is a green and environmentally-friendly process that utilizes the ubiquitous intermittent *** date,an emerging S-scheme heterojunction across the intimately coupled heterojunction materials is proposed to surpass the efficiency of conventional Ⅱ-type and Z-type ***-more,S-scheme heterojunction photocatalysts with greatly improved photocatalytic performance have gained significant attention due to their fast charge carriers separation along with strong redox ability and stability,since its proposal in ***,a timely and comprehensive review is highly desired to cover the state-of-the-art *** by this idea,the review conveys the recent progress and provides new insights into further *** the conventional method,in this review,we im-plement a quantification model to outline current trends in S-scheme heterojunctions research as well as their *** overview begins with the fundamentals of four basic photocatalytic mechanisms,followed by its design ***,diverse characterization techniques used in the S-scheme heterojunctions are systematically summarized along with the modification strategies to boost photocat-alytic ***,the internal reaction mechanism and emerging applications have been reviewed,including water conversion,CO_(2) remediation,wastewater treatment,H_(2)0_(2) production,N_(2) fix-ation,*** sum up the review,we present several current challenges and future prospects of the S-scheme heterojunctions photocatalysts,aiming to provide indispensable platforms for the future smart design of photocatalysts.

关键词： S-scheme heterojunctions Photocatalysts Modification strategies Charge separation mechanism

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Study on in situ stress testing method based on Kaiser effect of acoustic emission and COMSOL simulation

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Frontiers of Earth Science 2023年第3期17卷 818-831页

作者： Chenyu WANG Dongming ZHANG Shujian LI Yu CHEN Chongyang WANG Kangde REN State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China School of Resources and Safety Engineering Chongqing UniversityChongqing 400044China Yunnan Phosphate Chemical Group Co. Ltd.Kunming 650600China National Engineering and Technology Research Center for Development and Utilization of Phosphate Resources Kunming 650600China

In situ stress testing can improve the safety and efficiency of coal *** the Kaiser effect point is vital for in situ stress calculations;however,the in situ stress calculation is limited by the rock sampling ***,the Kaiser effect point identification theory is established and applied to the Xuyong Coal *** compression and acoustic emission experiments were carried out on sandstone with 6 sampling ***,COMSOL simulation is applied to study the in situ stress distribution in the coal mine to verify the calculation *** results are as follows.1)The failure mode of non-bedded and vertical-bedded rocks is primarily tensile shear failure with obvious brittleness in mechanical and acoustic emission *** slip along the bedding plane is the primary failure mode of inclined-bedded *** take-off points exist in the AE count curve.2)The Kaiser point identification method based on the variation of AE count curve parametersΔti andτi can effectively calculate the in situ *** to the numerical value of Kaiser point and sampling direction,the in situ stress of the conveyor roadway in the Xuyong Coal Mine was calculated asσ1=22.81 MPa,σ2=10.87 MPa andσ3=6.14 MPa.3)By the COMSOL simulation study,it was found that a stress concentration zone of 16.13 MPa exists near the two sides *** with the Kaiser effect method,the deviation rates of the three-direction principal stress calculated by COMSOL were all less than 5%.This verifies that the in situ stress calculation by Kaiser effect in this study can be applied to the Xuyong Coal Mine.

关键词： Coal Mine uniaxial compression acoustic emission COMSOL simulation

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Microstructural and thermal properties of coal measure sandstone subjected to high temperatures

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Journal of Rock Mechanics and Geotechnical engineering 2024年第8期16卷 2909-2921页

作者： Weijing Xiao Dongming Zhang Shujian Li Mingyang Wu School of Civil Engineering and Architecture East China Jiaotong UniversityNanchang330013China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing400044China Yunnan Phosphate Chemical Group Co. Ltd.Kunming650600China National Engineering and Technology Research Center for Development and Utilization of Phosphate Resources Kunming650600China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China

To study the microscopic structure,thermal and mechanical properties of sandstones under the influence of temperature,coal measure sandstones from Southwest China are adopted as the research object to carry out high-temperature tests at 25℃-1000℃.The microscopic images of sandstone after thermal treatment are obtained by means of polarizing microscopy and scanning electron microscopy(SEM).Based on thermogravimetric(TG)analysis and differential scanning calorimetric(DSC)analysis,the model function of coal measure sandstone is explored through thermal analysis kinetics(TAK)theory,and the kinetic parameters of thermal decomposition and the thermal decomposition reaction rate of rock are *** the uniaxial compression experiments,the stress‒strain curves and strength characteristics of sandstone under the influence of temperature are *** results show that the temperature has a significant effect on the microstructure,mineral composition and mechanical properties of *** particular,when the temperature exceeds 400℃,the thermal fracture phenomenon of rock is obvious,the activity of activated molecules is significantly enhanced,and the kinetic phenomenon of the thermal decomposition reaction of rock appears *** mechanical properties of rock are weakened under the influence of rock thermal fracture and mineral thermal *** research results can provide a reference for the analysis of surrounding rock stability and the control of disasters caused by thermal damage in areas such as underground coal gasification(UCG)channels and rock masses subjected to mine fires.

关键词： Rock mechanics Coal measure sandstone Micromorphology Thermal damage

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Gas charging and accumulation in deep coal measures of Daning-Jixian Block,Ordos Basin:insights from fluid inclusions and basin modeling

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Frontiers of Earth Science 2024年第4期18卷 696-713页

作者： Zhanwei LI Song LI Dazhen TANG Shuling TANG Jiaosheng YANG Wei HOU School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China Coal Reservoir Laboratory of National Engineering Research Center of CBM Development&Utilization Beijing 100083China China Petroleum Exploration and Development Research Institute Langfang 065007China National Engineering Research Center of China United Coalbed Methane Co.Ltd. Beijing 100095China PetroChina Coalbed Methane Company Limited Beijing 100028China

Unconventional natural gas in deep coal measures has become an exploration and research hotspot in recent *** exploration breakthrough of deep coalbed methane and tight sandstone gas in Daning-Jixian Block in the eastern Ordos Basin has revealed huge resource potential and commercial prospects in the deep Upper Paleozoic Carboniferous-Permian coal ***,the ambiguity of gas accumulation in deep coal measures has restricted exploration and *** on a series of tests for fluid inclusions,including petrographic observation,Raman spectroscopy analysis,and microthermometry,combined with the burial-thermal evolution history recovered from basin modeling,this study aims to clarify the timing of gas accumulation in deep coal *** results show four types of secondary fluid inclusions in the deep coal measure sandstone layers of Daning-Jixian Block,including CH4-rich inclusions,C2+hydrocarbons-bearing inclusions,CO_(2)-bearing inclusions,and aqueous *** main formation stage of fluid inclusions corresponded to the mesodiagenesis stage of the deep coal measure sandstone,and the coeval assemblages of fluid inclusions vary due to the recording of gas charging in different maturity stages of coal measure source *** study suggests that tight sandstone gas accumulation in deep coal measures was a continuous charging process with one period-multiple episodes in Daning-Jixian Block,and occurred mainly during the Early Cretaceous(137−127 Ma BP).The results of this study contribute to further understanding of gas accumulation mechanisms in deep coal measures.

关键词： gas accumulation deep coal measures fluid inclusions basin modeling Daning-Jixian Block

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Regeneration of spent LiFePO4 as a high-performance cathode material by a simultaneous coating and doping strategy

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International Journal of Minerals,Metallurgy and Materials 2023年第6期30卷 1162-1170页

作者： Hui Tong Yi Li Gaoqiang Mao Chaolei Wang Wanjing Yu Yong Liu Mudan Liu School of Metallurgy and Environment Central South UniversityChangsha 410083China Guangdong Provincial Key Laboratory of Development and Comprehensive Utilization of Mineral Resources Guangzhou 510560China National&Regional Joint Engineering Research Center of Nonferrous Metal Resource Recycling Changsha 410083China Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083China Institute of Resources Utilization and Rare Earth Development Guangdong Academy of SciencesGuangzhou 510560China

With the number of decommissioned electric vehicles increasing annually,a large amount of discarded power battery cathode material is in urgent need of ***,common leaching methods for recovering metal salts are economically inefficient and ***,the recycled material obtained by lithium remediation alone has limited performance in cycling ***,a short method of solid-phase reduction is developed to recover spent LiFePO4 by simultaneously introducing Mg2+ions for hetero-atom *** of particle agglomeration,carbon layer breakage,lithium loss,and Fe3+defects in spent LiFePO4 are also *** show that Mg2+addition during regeneration can remarkably enhance the crystal structure stability and improve the Li+diffusion *** regenerated LiFePO4 exhibits significantly improved electrochemical performance with a specific discharge capacity of 143.2 mAh·g^(−1)at 0.2 C,and its capacity retention is extremely increased from 37.9%to 98.5%over 200 cycles at 1 ***,its discharge capacity can reach 95.5 mAh·g^(−1)at 10 C,which is higher than that of spent LiFePO4(55.9 mAh·g^(−1)).All these results show that the proposed regeneration strategy of simultaneous carbon coating and Mg2+doping is suitable for the efficient treatment of spent LiFePO4.

关键词： spent LiFePO4 solid-phase reduction repair and regeneration cathode materials lithium-ion batteries

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Sequence stratigraphic analysis of superimposed coal measure gas-bearing system in Daning-Jixian block,eastern margin of Ordos Basin,China

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Frontiers of Earth Science 2024年第3期18卷 611-622页

作者： Shizhuang YANG Song LI Wenguang TIAN Guanghao ZHONG Junjian WANG School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China Coal Reservoir Laboratory of National Engineering Research Center of CBM Development&Utilization Beijing 100083China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China Klohn Crippen Berger Ltd. BrisbaneQueensland 4101Australia

The identification of superimposed gas-bearing systems in coal measures is the basis for expediting the optimization of coal measure gas *** the analysis of drill cores and log data of Upper Carboniferous Benxi Formation to the member 8 of Middle Permian Lower Shihezi Formation in Daning-Jixian block,eastern margin of Ordos Basin,four distinct superimposed coal measure gas-bearing systems were identified,and their formation mechanism was discussed from the sequence stratigraphic *** Ⅰ system mainly contains multiple coal seams,shales and sandstone *** Ⅱ system is dominated by multiple coal seams and *** Ⅲ is characterized by multiple sandstone layers,and type Ⅳ system is dominated by limestones and *** general,the gas-bearing systems deposited in barrier-lagoon are type Ⅱ,those deposited in carbonate tidal flats are type IV,and those deposited in the delta front are types Ⅰ and Ⅲ.The marine mudstone,acting as a key layer near the maximum flooding surface,exhibits very low permeability,which is the main factor contributing to the formation of superimposed gas-bearing *** sedimentary environment plays a significant role in controlling the distribution of gas-bearing ***,the vertical gas-bearing systems in the south-western region,where delta front and lagoon facies overlap,are more complex than those in the north-eastern delta front facies.

关键词： coal measure gas superimposed gas-bearing system sequence stratigraphic key layer

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Coal measure gas system of the Middle Jurassic Xishanyao Formation， southern margin of the Junggar Basin， China

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Journal of Earth Science 2023年

作者： Aobo Zhang Shida Chen Dazhen Tang Shu Tao Shuling Tang Yifan Pu Taiyuan Zhang School of Energy Resources， China University of Geosciences (Beijing) Coal Reservoir Laboratory of National Engineering Research Center of Coalbed Methane Development & Utilization

The composition and sedimentary controlling effect of the coal measure gas-bearing (CMG) system of the Jurassic Xishanyao Formation in the southern margin of the Junggar Basin (SJB) are analysed based on core observations， sample tests， and logging data. The results show that the lithological associations of the SJB can be classified into 6 types based on sediment supply strengths and sealing abilities， while the gas shows of CMG reservoirs vary greatly among different lithological associations. Due to the diversified coal-forming environment and multistage coal accumulation， superimposed CMG systems are generally developed in the SJB， and their types include: superimposed unattached CMG systems， multilayer unified CMG systems， and superimposed mixed CMG systems. Furthermore， sedimentary controls on the vertical and regional distributions of different types of CMG systems are discussed according to the sedimentary facies of single wells and well cross-sections and the corresponding data of well log， gas logging， and gas contents. Shore shallow lake environments in the Fukang， Miquan， and northern Liuhuanggou areas were favourable for forming superimposed unattached CMG systems. Braided river environments in the Houxia and the southern Liuhuanggou areas usually formed multilayer unified CMG systems. Braided river delta environments in the Manasi， Hutubi， and eastern Sikeshu areas generally developed multilayer unified CMG systems and superimposed mixed CMG systems. For different types of superimposed CMG systems， the number of gas-bearing units， coal seam gas content， vertical hydraulic connectivity and lateral continuity vary considerably， which makes it necessary to tailor the CMG co-production plan to the type of CMG system.

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Carbonitride MXene Ti_(3)CN(OH)_(x)@MoS_(2)hybrids as efficient electrocatalyst for enhanced hydrogen evolution

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Nano research 2023年第4期16卷 4656-4663页

作者： Jizhou Jiang Fangyi Li Saishuai Bai Yongjing Wang Kun Xiang Haitao Wang Jing Zou Jyh-Ping Hsu School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China Department of Chemical Engineering “National Taiwan University”Taipei 10617

Renewable energy powered electrocatalytic water splitting is a promising strategy for hydrogen generation,and the design and development of high-efficiency and earth-abundant electrocatalysts for hydrogen evolution reaction(HER)are highly ***,MoS2 nanoflowers decorated two-dimensional carbonitride-based MXene Ti3CN(OH)x hybrids have been constructed by etching and post-hydrothermal *** electrochemical performance of the as-obtained Ti_(3)CN(OH)_(x)@MoS_(2)hybrids having a quasi core-shell structure is fascinating:An overpotential of 120 mV and a Tafel slope of 64 mV∙dec^(−1)can be delivered at a current density of 10 mA∙cm^(−2).And after 3,000 cyclic voltammetry cycles,it can be seen that there is no apparent *** the experimental results and density functional theory(DFT)calculations indicate that the synergetic effects between Ti_(3)CN(OH)x and MoS_(2)are responsible for the robust electrochemical HER *** electrons of-OH group in Ti_(3)CN(OH)x are transferred to MoS_(2),making the adsorption energy of the composite for H almost *** metallic Ti_(3)CN(OH)x is also beneficial to the fast charge transfer *** construction of MXene-based hybrids with optimal electronic structure and unique morphology tailored to the applications can be further used in other promising energy storage and conversion devices.

关键词： Ti_(3)CN(OH)x MoS_(2) hydrogen evolution reaction density functional theory(DFT)calculations

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Phenolic compounds from Moringa oleifera Lam.:extraction,separation and identification,biological activities,and comprehensive applications

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Food Science and Human Wellness 2025年第3期14卷 806-821页

作者： Liang Tao Zilin Wang Min Yang Xinrui Kang Jiahe Dai Cunchao Zhao Tianyi Dai Jun Sheng Yang Tian College of Food Science and Technology Yunnan Agricultural UniversityKunming 650201China National Research and Development Professional Center for Moringa Processing Technology Yunnan Agricultural UniversityKunming 650201China Engineering Research Center of Development and Utilization of Food and Drug Homologous Resources Ministry of EducationYunnan Agricultural UniversityKunming 650201China Yunnan Provincial Engineering Research Center for Edible and Medicinal Homologous Functional Food Yunnan Agricultural UniversityKunming 650201China Pu’er University Pu’er 665000China

Moringa oleifera *** a Moringa genus in the Moringaceae family that is high in nutrients and has a wide range of *** compounds are widely found in plants and have various health benefits for the human *** its high content and wide variety of phenolic compounds,*** *** been widely studied for its health *** phenolic compounds in *** Lam.(MOPCs)can be a potential source of functional food ingredients in pharmaceutical and industrial *** studies have shown that MOPCs have antioxidant,anti-obesity,anti-diabetic,and antibacterial *** the research on MOPCs has been gradually increasing,the extraction,isolation,identification,biological activities,and comprehensive application of MOPCs need a more systematic summary and ***,this paper reviews the isolation and extraction methods,structure identification,biological activities,and comprehensive applications to provide a further reference for the research and application of MOPCs.

关键词： Moringa oleifera Lam. Phenolic compounds Structural characteristics Biological activities Comprehensive applications

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