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Study on synergistic leaching of potassium and phosphorus from potassium feldspar and solid waste phosphogypsum via coupling reactions

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Chinese Journal of Chemical Engineering 2024年第1期65卷 117-129页

作者： Chao Li Shizhao Wang Yunshan Wang xuebin An Gang Yang Yong Sun School of Chemical Engineering and Technology Hebei University of TechnologyTianjin 300130China National Engineering Research Center of Green Recycling for Strategic Metal Resources Chinese Academy of SciencesBeijing 100190China School of Engineering Edith Cowan University270 Joondalup DriveJoondalupWA 6027Australia Key Laboratory of Carbonaceous Wastes Processing and Process Intensification of Zhejiang Province The University of Nottingham Ningbo ChinaNingbo 315100China

To achieve the resource utilization of solid waste phosphogypsum(PG)and tackle the problem of utilizing potassium feldspar(PF),a coupled synergistic process between PG and PF is proposed in this *** study investigates the features of P and F in PG,and explores the decomposition of PF using hydrofluoric acid(HF)in the sulfuric acid system for K leaching and leaching of P and F in *** impact factors such as sulfuric acid concentration,reaction temperature,reaction time,material ratio(PG/PF),liquid–solid ratio,PF particle size,and PF calcination temperature on the leaching of P and K is systematically investigated in this *** results show that under optimal conditions,the leaching rate of K and P reach more than 93%and 96%,*** study using shrinking core model(SCM)indicates two significant stages with internal diffusion predominantly controlling the leaching of *** apparent activation energies of these two stages are 11.92 kJ·mol^(-1)and 11.55 kJ·mol^(-1),respectively.

关键词： Phosphogypsum Potassium feldspar Coupling reaction Leaching Waste treatment Kinetics

Small but mighty:Empowering sodium/potassium-ion battery performance with S-doped SnO_(2) quantum dots embedded in N,S codoped carbon fiber network

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Carbon Energy 2024年第5期6卷 186-200页

作者： Shengnan He Hui Wu Shuang Li Ke Liu Yaxiong Yang Hongge Pan xuebin Yu institute of Science and Technology for New Energy Xi'an Technological UniversityXi'anChina Department of Materials Science Fudan UniversityShanghaiChina Wanxiang A123 Systems Corporation HangzhouChina School of Material Science and Engineering Shanghai UniversityShanghaiChina

SnO_(2) has been extensively investigated as an anode material for sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs)due to its high Na/K storage capacity,high abundance,and low ***,the sluggish reaction kinetics,low electronic conductivity,and large volume changes during charge and discharge hinder the practical applications of SnO_(2)-based electrodes for SIBs and *** rational structures with fast charge/ion transfer and robust stability is important to overcoming these ***,S-doped SnO_(2)(S-SnO_(2))quantum dots(QDs)(≈3 nm)encapsulated in an N,S codoped carbon fiber networks(S-SnO_(2)-CFN)are rationally fabricated using a sequential freeze-drying,calcination,and S-doping *** analysis and density functional theory calculations reveal that the integration of S-SnO_(2) QDs with N,S codoped carbon fiber network remarkably decreases the adsorption energies of Na/K atoms in the interlayer of SnO_(2)-CFN,and the S doping can increase the conductivity of SnO_(2),thereby enhancing the ion transfer *** synergistic interaction between S-SnO_(2) QDs and N,S codoped carbon fiber network results in a composite with fast Na+/K+storage and extraordinary long-term ***,the S-SnO_(2)-CFN delivers high rate capacities of 141.0 mAh g^(−1) at 20 A g^(−1) in SIBs and 102.8 mAh g^(−1) at 10 A g^(−1) in ***,it delivers ultra-stable sodium storage up to 10,000 cycles at 5 A g^(−1) and potassium storage up to 5000 cycles at 2 A g^(−1).This study provides insights into constructing metal oxide-based carbon fiber network structures for high-performance electrochemical energy storage and conversion devices.

关键词： carbon fiber network heteroatom doping potassium-ion battery sodium-ion battery S-SnO_(2)quantum dot

One-step hydrothermal synthesis of few-layered metallic phase MoS2 for high-performance supercapacitors

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Progress in Natural Science:Materials International 2024年第2期34卷 429-436页

作者： Jing Xu Xulong Yuan Yujie Zhao Shaoqi Rui Qingling Jia Han Li Shun Lu Bing Li Yongxing Zhang xuebin Zhu Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation Anhui Province Key Laboratory of Intelligent Computing and Applications Anhui Province Industrial Generic Technology Research Center for Alumics Materials Huaibei Normal University Chongqing institute of Green and Intelligent Technology Chinese Academy of Sciences Key Laboratory of Materials Physics Institute of Solid State Physics HFIPS Chinese Academy of Sciences

In recent years,molybdenum disulfide（MoS2） has gained significant attention in the scientific *** MoS2demonstrates unique properties and potential ***,the synthesis of few-layered and high-purity 1T-MoS2is still a *** this study,we successfully employed a hydrothermal method to synthesize few-layered and high-purity *** purity of the material is controlled by a combination of sodium borohydride and ***,the few-layered 1T-MoS2exhibits exceptional performance as a supercapacitor,including the high specific capacitance(250.3 F g-1at a current density of 1 A g-1) and excellent long-trem cycling stability（90.7 % after 5000 cycles）.Meanwhile,the asymmetric device assembled by 6-FL-1TMoS2and active carbon on carbon cloths exhibits excellent flexibility and high energy and power density(23.1μWh cm-2at 600 μW cm-2,55 μWh cm-2at 12000 μW cm-2).This work provides valuable insights into the synthesis of few-layered and high-purity 1T-MoS2,opening up new avenues for further research and applications.

关键词： 1T-MoS2 Few-layered High-purity One-pot hydrothermal method Supercapacitor

Preliminary electromagnetic analysis of the COOL blanket for CFETR

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Plasma Science and Technology 2024年第1期26卷 101-108页

作者：鲁帅领马学斌刘松林 School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People’s Republic of China institute of Plasma Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031People’s Republic of China

The supercritical CO_(2)cOoled Lithium-Lead(COOL)blanket has been designed as one advanced blanket candidate for the Chinese Fusion Engineering Test Reactor(CFETR).This work focuses on the electromagnetic(EM)loads(Maxwell force and Lorentz force)acting on the COOL blanket,which are important mechanical loads in further structural analysis of the COOL blanket.A 3D electromagnetic analysis is performed using the ANSYS finite element method to obtain EM loads on the COOL blanket in this *** first,the magnetic scalar potential(MSP)method is used to obtain the magnetic field and the Maxwell force on the COOL ***,the magnetic vector potential(MVP)method is performed during a plasma disruption event to get the eddy current *** last,a multi-step method is adopted for the calculation of the Lorentz force and the *** maximum Lorentz forces of inboard and outboard blanket structural components are 5624 kN and 2360 kN respectively.

关键词： CFETR COOL blanket finite element analysis electromagnetic analysis

china's Regional Policies:Progress of the 11^(th) Five Year Plan Period and Prospect of the 12^(th) Five Year Plan Period

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Chinese Journal of Population,Resources and Environment 2011年第2期9卷 90-96页

作者： Chen xuebin1,2 1.institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,china 2.National Development and Reform Commission,Beijing 100824,china institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China National Development and Reform Commission Beijing 100824 China

during the 11th Five Year Plan period,china improved its policy system for the overall strategy of regional development,and established and completed the policies intended for the promotion of regional cooperation and ***,regional development in china took on a series of positive changes such as the enhancement of *** the 12th Five Year Plan period,china will fully implement and continuously improve the policy measures for development in its four major regions,strengthen differentiated guidance to different regions in line with the planning for major function-oriented zones,and accelerate the establishment of basic systems that facilitate coordinated regional development.

关键词：中国展望区域协调发展区域发展区域合作区域规划

1959—2022年青海省食源性肉毒中毒事件流行病学分析

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中国食品卫生杂志 2024年第2期36卷 207-211页

作者：王云丽郭学斌青海大学医学部公共卫生系青海省疾病预防控制中心青海西宁810000

目的分析青海省食源性肉毒中毒事件流行特征及影响因素,为防控提供科学依据。方法收集1959—2022年青海省肉毒中毒数据,应用Excel 2021进行流行病学特征分析,利用R 4.2.3对事件数和病死率进行Mann-Kendall趋势检验,运用ArcGis 10.2软件... 详细信息

目的分析青海省食源性肉毒中毒事件流行特征及影响因素,为防控提供科学依据。方法收集1959—2022年青海省肉毒中毒数据,应用Excel 2021进行流行病学特征分析,利用R 4.2.3对事件数和病死率进行Mann-Kendall趋势检验,运用ArcGis 10.2软件制作空间分布图。结果1959—2022年发生食源性肉毒中毒事件86起,发病348人,死亡195人,病死率为56.03%。中毒主要发生在第二、三季度,牧民为主要的发病人群,肉毒毒素型别主要为E型,“风干肉”为主要的中毒食品,生食和开锅即食为主要的食用方式。结论青海省食源性肉毒中毒病死率整体呈下降趋势,发病地区也逐渐缩小,但作为我国高发地区之一,病死率仍处于较高水平,应进一步加强对高危人群食品安全教育,提高基层医疗机构对肉毒中毒的救治能力,减少中毒事件的发生和死亡。

关键词：肉毒杆菌肉毒毒素食源性致病菌青海

Characteristics of the Earth-Resistivity Change Before the Jingtai earthquake with Ms=6.2

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earthquake Research in china 1994年第3期8卷 60-67页

作者： du xuebin,Zhao Hevun,Chen Baozhi and Guo HuiminSeismolcgical institute of lanzhou,SSB,lanzhou 73.000,china

The earth-resistivity change recorded before the Jingtai earthquake(EQ).with Ms=6.2 at 11 geoelectric stations within 400 km of the EQ was discussed in this paper,and the following conclusions are made:1) imminent variations of earth-resistivity prior to the EQ were recorded at the Wuwei,Dingxi and Shandan stations immediately before the EQ;2) the recordability of the imminent variations at a station was related to the active deep faults and the strongly active faults inside and outside the focal zone,and to the causative stress field as well;3) the temporal and spatial characteristics of the earth-resistivity change immediately before the EQ showed that the EQ was probably induced by the NNW direction stress field(or by another one of similar direction)which was greatly increased during a short period immediately before the EQ and that the northern wall of the focal fault played a major role in the process of the EQ preparation and occurrence of the EQ.

关键词： epicenter resistivity immediately probably moderate prior conclusions situated strike record

基于OrcaFlex的钢悬链立管疲劳损伤预报

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海洋工程 2024年第3期42卷 1-10页

作者：侯静康庄井学斌中海油研究总院有限责任公司北京100028 哈尔滨工程大学船舶工程学院黑龙江哈尔滨150001 海洋石油工程股份有限公司天津300461

涡激振动是钢悬链立管疲劳损伤的重要诱导因素之一,因此涡激振动分析在钢悬链立管设计中占据重要地位。OrcaFlex在海洋工程领域功能强大、应用广泛,能够提供两种涡激振动疲劳损伤预报方法,分别是基于模态叠加法的频域预报方法和基于Iwan... 详细信息

涡激振动是钢悬链立管疲劳损伤的重要诱导因素之一,因此涡激振动分析在钢悬链立管设计中占据重要地位。OrcaFlex在海洋工程领域功能强大、应用广泛,能够提供两种涡激振动疲劳损伤预报方法,分别是基于模态叠加法的频域预报方法和基于Iwan-Blevins尾流振子模型的时域预报方法。OrcaFlex的涡激振动时域预报模型只考虑了横流向涡激振动造成的疲劳损伤,基于OrcaFlex的时域预报方法开发了双自由度涡激振动尾流振子模型的接口,考虑了浮式平台运动对钢悬链立管的涡激振动激励作用,实现了钢悬链立管双自由度涡激振动疲劳损伤预报。

关键词：钢悬链立管疲劳损伤时域预报涡激振动 OrcaFlex 尾流振子模型

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三维连续-非连续并行计算方法及其在岩爆过程模拟中的应用

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水资源与水工程学报 2024年第1期35卷 177-185页

作者：王学滨杜轩薛承宇陈双印廖裴彬余保健辽宁工程技术大学计算力学研究所辽宁阜新123000 辽宁工程技术大学力学与工程学院辽宁阜新123000

随着深部岩石工程的发展,岩爆变得越发严重。在岩爆的数值模拟方面,连续方法和非连续方法均具有一定的局限性。兼具二者优势的连续-非连续方法更具优势,且正在快速发展。基于CUDA对自主开发的三维拉格朗日元与离散元耦合连续-非连续方... 详细信息

随着深部岩石工程的发展,岩爆变得越发严重。在岩爆的数值模拟方面,连续方法和非连续方法均具有一定的局限性。兼具二者优势的连续-非连续方法更具优势,且正在快速发展。基于CUDA对自主开发的三维拉格朗日元与离散元耦合连续-非连续方法进行了GPU并行加速。为了探索岩爆的机理和过程,模拟了不同静水压力、侧压系数和单元数目(最多达100×10^(4))条件下圆形洞室围岩V形坑的演化规律和单元弹射现象。考察了洞室围岩中裂纹的定量演化规律。研究表明:当静水压力较大时,基于芬纳公式的支护设计偏于不安全。由于V形坑的位置发生改变,V形坑的平均最大深度随着静水压力的增加先缓慢增加后快速增加。关于洞室围岩V形坑的模拟结果能与有关的实验结果、数值结果和现场观测结果吻合。上述研究很好地体现了岩爆并行计算较串行计算和商业软件计算的优势。

关键词：岩爆 GPU并行计算三维连续-非连续方法 V形坑静水压力侧压系数洞室