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Solvent extraction and separation of cobalt from leachate of spent lithium-ion battery cathodes with N263 in nitrite media

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International Journal of Minerals,Metallurgy and Materials 2023年第5期30卷 897-907页

作者： Yingnan yang Yingjie yang Chunlin He yuezhou Wei Toyohisa Fujita Guifang Wang Shaojian Ma Wenchao yang School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials Nanning 530004China Key Laboratory of New Low-carbon Green Chemical Technology Education Department of Guangxi Zhuang Autonomous RegionNanning 530004China School of Nuclear Science and Technology University of South ChinaHengyang 421000China School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

To effectively separate and recover Co(Ⅱ) from the leachate of spent lithium-ion battery cathodes,we investigated solvent extraction with quaternary ammonium salt N263 in the sodium nitrite system.NO_(2)^(-)combines with Co(Ⅱ) to form an anion [Co(NO_(2))_(3)]^(-),and it is then extracted by N263.The extraction of Co(Ⅱ) is related to the concentration of NO_(2)^(-).The extraction efficiency of Co(Ⅱ) reaches the maximum of99.16%,while the extraction efficiencies of Ni(Ⅱ),Mn(Ⅱ),and Li(Ⅰ) are 9.27%-9.80% under the following conditions:30vol% of N263 and15vol% of iso-propyl alcohol in sulfonated kerosene,the volume ratio of the aqueous-to-organic phase is 2:1,the extraction time is 30 min,and1 M sodium nitrite in 0.1 MHNO_(3).The theoretical stages require for the Co(Ⅱ) extraction are performed in the McCabe–Thiele diagram,and the extraction efficiency of Co(Ⅱ) reaches more than 99.00% after three-stage counter-current extraction with Co(Ⅱ) concentration of 2544mg/L.When the HCl concentration is 1.5 M,the volume ratio of the aqueous-to-organic phase is 1:1,the back-extraction efficiency of Co(Ⅱ)achieves 91.41%.After five extraction and back-extraction cycles,the Co(Ⅱ) extraction efficiency can still reach 93.89%.The Co(Ⅱ) extraction efficiency in the actual leaching solution reaches 100%.

关键词： cobalt N263 sodium nitrite extraction iso-propyl alcohol spent lithium-ion battery

A functionalized activated carbon adsorbent prepared from waste amidoxime resin by modifying with H_(3)PO_(4) and ZnCl_(2) and its excellent Cr(Ⅵ)adsorption

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 585-598页

作者： Chunlin He Yun Liu Mingwei Qi Zunzhang Liu yuezhou Wei Toyohisa Fujita Guifang Wang Shaojian Ma Wenchao yang School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004China School of Nuclear Science and Technology University of South ChinaHengyang 421000China School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of New Low-carbon Green Chemical Technology Education Department of Guangxi Zhuang Autonomous RegionNanning 530004China

With the application of resins in various fields, numerous waste resins that are difficult to treat have been produced. The industrial wastewater containing Cr(Ⅵ) has severely polluted soil and groundwater environments, thereby endangering human health. Therefore, in this paper, a novel functionalized mesoporous adsorbent PPR-Z was synthesized from waste amidoxime resin for adsorbing Cr(Ⅵ). The waste amidoxime resin was first modified with H3PO4 and ZnCl_(2), and subsequently, it was carbonized through slow thermal decomposition. The static adsorption of PPR-Z conforms to the pseudo-second-order kinetic model and Langmuir isotherm, indicating that the Cr(Ⅵ) adsorption by PPR-Z is mostly chemical adsorption and exhibits single-layer adsorption. The saturated adsorption capacity of the adsorbent for Cr(Ⅵ) could reach 255.86 mg/g. The adsorbent could effectively reduce Cr(Ⅵ) to Cr(Ⅲ) and decrease the toxicity of Cr(Ⅵ) during adsorption. PPR-Z exhibited Cr(Ⅵ) selectivity in electroplating wastewater. The main mechanisms involved in the Cr(Ⅵ) adsorption are the chemical reduction of Cr(Ⅵ) into Cr(Ⅲ) and electrostatic and coordination interactions. Preparation of PPR-Z not only solves the problem of waste resin treatment but also effectively controls Cr(Ⅵ) pollution and realizes the concept of “treating waste with waste”.

关键词： waste amidoxime resin mesoporous adsorbent H_(3)PO_(4)and ZnCl_(2)processing Cr(VI)adsorption electroplating wastewater

Microwave Synthesis of Cu-Doped Ternary ZnCdS Quantum Dots with Composition-Controllable Photoluminescence

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Wuhan University Journal of Natural Sciences 2012年第3期17卷 217-222页

作者： yang yuezhou LIANG Shan YU Xuefeng WANG Ququan School of Physics and Technology/Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education Wuhan UniversityWuhan 430072HubeiChina

Bright Cu-doped ternary ZnCdS quantum dots （ZnCdS：Cu QDs） with varied Cd concentrations were synthesized in aqueous solution by using a convenient microwave method.These ternary QDs could be directly dispersed in water solution.By regulating the Cd2＋ concentration from 0 to 50% （mole fraction of the cations）,the photoluminescence excitation （PLE） peak of such ZnCdS：Cu QDs could be continuously redshifted from 320 nm to 380 nm,while their photoluminescence （PL） peak was redshifted from 490 nm to 580 nm,exhibiting multicolor Cu-related emissions.Furthermore,the quantum yield of the ZnCdS：Cu QDs could reach as high as 12% by regulating the Cu doping concentration.These ZnCdS：Cu ternary QDs with kind surface conditions and good composition-controllable optical properties may have potential application in many areas such as sensing,bioimaging,and light-emitting diodes.

关键词： semiconductors chemical synthesis luminescence

基于综合集成赋权法的我国高质量绿色低碳园区综合评价方法

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生态经济 2024年第5期40卷 39-43,53页

作者：杨晓亮蔡跃洲北京中恒博瑞数字电力科技有限公司北京100085 中国社会科学院数量经济与技术经济研究所北京110000

产业园区是我国经济、能源低碳转型的重要阵地,是支撑我国工业化集群快速发展的底层核心力量,具有集经济、信息、能源、环境为一体的多重融合功能,其高质量绿色低碳发展是实现我国碳达峰、碳中和的重要路径与抓手。论文在国内相关研究... 详细信息

产业园区是我国经济、能源低碳转型的重要阵地,是支撑我国工业化集群快速发展的底层核心力量,具有集经济、信息、能源、环境为一体的多重融合功能,其高质量绿色低碳发展是实现我国碳达峰、碳中和的重要路径与抓手。论文在国内相关研究成果基础上,采用内外因素论,从产业园区高质量低碳发展多角度分析,提出7项准则层、30项二级指标。其中,包含碳利用效率、区域碳达峰影响比率、碳中和平台建设情况等6项评价低碳效率、信息化的创新性指标。同时为提升体系评价效果,提出基于序关系和熵值法的主客观综合集成赋权模型。该评价方法可避免主观评价弊端,提升评价体系实用性、有效性,旨在为未来我国高质量绿色低碳园区落地建设提供评估理论支撑。

关键词：绿色低碳指标体系主客观综合集成赋权法熵值法

An Optimized Capture Algorithm for GPS Receiver

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An Optimized Capture Algorithm for GPS Receiver

A Method of Spread Spectrum Positioning Signal Generation Based on Storage-Broadcast for Base Station Positioning System

第五届中国卫星导航学术年会

作者： Kun Zhai Zhongliang Deng yuezhou Hu Le yang Zhuang Yuan School of Electronic Engineering. Beijing University of Posts and Telecommunications

ISBN: (纸本)9783642547362

The paper studies and designs a differential guess-check capture algorithm. This paper first makes a brief overview on coherent, incoherent and differential integration, then it contrasts effects of longer coherent integral time and incoherent integral time on the baseband loop, furthermore analyzes their features and shortcomings. The paper continues to discuss traditional capture algorithm, half-bits algorithm and full-bits algorithm. After analyzing theory and shortcomings, the paper proposes a kind of optimized differential guess-check capture algorithm. Through theoretical analysis and MATLAB software simulation verification, the paper simulated and compared the optimized algorithm with traditional loop algorithm on different data length 80ms, 180ms , 280ms.The result indicates the optimized one has bigger correlation peak and smaller noise fluctuation. Moreover, as the processed data lengthens, the optimized algorithm has more obvious advantage. Finally, the methods to reduce the capture time are analyzed and simulated. This shows that the scheme design is effective and feasible

关键词： Baseband receiver Integration time Guess-check capture algorithm High sensitivity

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A Method of Spread Spectrum Positioning Signal Generation Ba...

剖宫产切口瘢痕以及憩室对体外受精-胚胎移植后妊娠结局的影响

第五届中国卫星导航学术年会

作者： Zhuang Yuan Zhongliang Deng yuezhou Hu Le yang Kun Zhai Qian An School of Electronic Engineering Beijing University of Posts and Telecommunications

With the development of the world,Location based service（LBS） is becoming more and more important.Relative to widely used and accordingly mature GNSS technology,Pseudolite Positioning System can offer seamless outdoor ＆ indoor positioning.However,the construction/maintenance cost of pseudolite is high and restricts its application.At present most of pseudo satellite base station use spread spectrum navigation and positioning signal system like GNSS.It usually adopts the direct sequence spread spectrum signal transmitter,whose architecture includes information modulation,spread spectrum modulation and frequency modulation to realize the generation of positioning signal.A positioning signal generation algorithm of pseudolite positioning system with good flexibility is presented here.It is based on the way of storage - broadcast,which firstly store digital spread spectrum sequence signal processed in advance,then choose the corresponding position signal phase to broadcast,lastly modulate to generate baseband positioning signal on account of navigation message.This method can easily change the spread spectrum code sequence and signal system,has good flexibility and can be used as a general positioning signal generator.Actual design and application show that the method can satisfy the demand of location system for baseband positioning signal.

关键词： pseudolite positioning.storage‐broadcast.spread spectrum positioning signal

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中华生殖与避孕杂志 2020年第6期40卷 447-453页

作者：陈华鲁南杨岳州谷瑞环孙晓溪复旦大学附属妇产科医院上海集爱遗传与不育诊疗中心 200011

目的探讨前次剖宫产后子宫切口瘢痕以及憩室对体外受精-胚胎移植(in vitro fertilization-embryo transfer,IVF-ET)妊娠结局的影响。方法回顾性分析2014年1月至2018年1月期间在复旦大学附属妇产科医院上海集爱遗传与不育诊疗中心接受单... 详细信息

目的探讨前次剖宫产后子宫切口瘢痕以及憩室对体外受精-胚胎移植(in vitro fertilization-embryo transfer,IVF-ET)妊娠结局的影响。方法回顾性分析2014年1月至2018年1月期间在复旦大学附属妇产科医院上海集爱遗传与不育诊疗中心接受单囊胚冻融胚胎移植(frozen-thawed embryo transfer,FET)且有一次分娩史的患者临床资料。按照分娩方式分为经阴道分娩的顺产组(267个周期)和剖宫产组(256个周期),并根据B超测量到的剖宫产组子宫切口不同愈合情况,进一步分为3个亚组,分别为瘢痕不显著亚组、瘢痕亚组和瘢痕憩室亚组。分析有无剖宫产史以及剖宫产子宫瘢痕切口愈合不良程度对FET周期的妊娠结局的影响。结果单囊胚FET周期中顺产组和剖宫产组患者的年龄、体质量指数(BMI)、子宫内膜厚度差异均无统计学意义(P均>0.05)。剖宫产组的胚胎种植率、临床妊娠率和活产率分别为48.05%、46.48%和38.28%,显著低于顺产组(58.05%,P=0.023;56.93%,P=0.014;51.31%,P=0.022);早产率在剖宫产组是13.26%,显著高于顺产组(1.46%,P<0.001);分娩孕周亦提示剖宫产组[(38.12±1.76)周]显著低于顺产组[(39.02±1.37)周,P<0.001];新生儿体质量在剖宫产组[(3 372.14±374.25) g]也显著低于顺产组[(3 438.82±337.30) g,P=0.023];另外,根据剖宫产后瘢痕严重程度将剖宫产组进一步分组后显示:与顺产组相比,子宫瘢痕亚组的胚胎种植率、临床妊娠率、活产率和分娩孕周均有显著降低(P=0.021、P=0.026、P=0.005和P=0.009);而瘢痕憩室亚组则显示更受影响(P=0.004、P=0.003、P=0.004和P<0.001),差异均有统计学意义。结论有剖宫产史特别是剖宫产后子宫切口愈合不良显著影响胚胎种植率和临床妊娠率,影响IVF-ET的成功率,并且增加早产和低体质量新生儿出生的风险。

关键词：受精,体外单胚胎移植妊娠结局冻融胚胎移植周期剖宫产切口瘢痕憩室

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基于DB2的并行数据库体系结构研究

计算机工程 2005年第5期31卷 96-98页

作者：陈越洲杨树强贾焰国防科技大学计算机学院长沙410073

分析了DB2分区数据库系统在典型的Shared-Nothing硬件环境中的请求处理机制,发现该系统在大量请求并同时访问同一数据库时其“目录节点”将成为系统的“瓶颈”,在原系统的基础上设计了一种新的系统体系结构框架,新的结构不仅可以解决原... 详细信息

分析了DB2分区数据库系统在典型的Shared-Nothing硬件环境中的请求处理机制,发现该系统在大量请求并同时访问同一数据库时其“目录节点”将成为系统的“瓶颈”,在原系统的基础上设计了一种新的系统体系结构框架,新的结构不仅可以解决原结构中存在的“瓶颈”问题,增强系统的处理能力,而且使系统配置更灵活,具有更强的扩展能力。

关键词：并行数据库系统结构瓶颈 DB2

基于NAPA二次开发的船舶破损控制文件编制

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造船技术 2017年第1期45卷 83-88页

作者：杨博吴晓莲马跃洲上海船舶研究设计院上海201203 上海船舶工艺研究所上海200032

为了高效便捷地编制船舶破损控制文件,基于Naval Architectural Package(NAPA)软件的MANAGER工具二次开发damage control booklet manager程序。介绍MANAGER工具及二次开发程序的计算流程和使用方法。重点研究船舶进水最终状态的图形化... 详细信息

为了高效便捷地编制船舶破损控制文件,基于Naval Architectural Package(NAPA)软件的MANAGER工具二次开发damage control booklet manager程序。介绍MANAGER工具及二次开发程序的计算流程和使用方法。重点研究船舶进水最终状态的图形化显示,使高级船员能够直观清晰地掌握船舶发生破损事故时的实际情况,增加自身的生存几率,从而提高船舶实际运营的安全性。

关键词：船舶破损破损控制 NAPA 进水最终状态