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Bipolar membrane electrodialysis integrated with in-situ CO_(2)absorption for simulated seawater concentrate utilization,carbon storage and production of sodium carbonate

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Journal of Environmental Sciences 2024年第8期142卷 21-32页

作者： Jingtao Bi Tianyi Chen Yue Xie Ruochen Shen Bin Li Mengmeng Sun xiaofu guo Yingying Zhao School of Chemical Engineering and Technology Hebei University of TechnologyTianjin 300401China Engineering Research Center of Seawater Utilization Technology of Ministry of Education School of Chemical Engineering and TechnologyHebei University of TechnologyTianjin 300401China Hebei Collaborative Innovation Center of Modern Marine Chemical Technology Tianjin 300401China Tianjin Key Laboratory of Chemical Process Safety Tianjin 300130China Shandong Technology Innovation Center of Seawater and Brine Efficient Utilization Weifang 262737China

In the context of carbon capture,utilization,and storage,the high-value utilization of carbon storage presents a significant *** address this challenge,this study employed the bipolar membrane electrodialysis integrated with carbon utilization technology to prepare Na_(2)CO_(3)products using simulated seawater concentrate,achieving simultaneous saline wastewater utilization,carbon storage and high-value production of Na_(2)CO_(3).The effects of various factors,including concentration of simulated seawater concentrate,current density,CO_(2)aeration rate,and circulating flow rate of alkali chamber,on the quality of Na_(2)CO_(3)product,carbon sequestration rate,and energy consumption were *** the optimal condition,the CO_(3)^(2-)concentration in the alkaline chamber reached a maximum of 0.817 mol/L with 98 mol%*** resulting carbon fixation rate was 70.50%,with energy consumption for carbon sequestration and product production of 5.7 k Whr/m^(3)CO_(2)and1237.8 k Whr/ton Na_(2)CO_(3),*** coupling design provides a triple-win outcome promoting waste reduction and efficient utilization of resources.

关键词： Bipolar membrane electrodialysis(BMED) Carbon capture Utilization and storage(CCUS) Seawater concentrate Sodium carbonate

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Influences of additives on the crystal habit of potassium chloride

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Frontiers of Chemical Science and Engineering 2010年第1期4卷 78-81页

作者： xiaofu guo Junsheng YUAN Zhiyong JI Min SU Engineering Research Center of Seawater Utilization Technology of Ministry of Education Hebei University of TechnologyTianjin 300130China

By means of constant control speed cooling crystallization,the influences of four additives,including lead chloride,cadmium chloride,sodium salicylate,and quaternary ammonium salt,on the crystal habit of KCl were *** results show that the crystal habit of KCl is cube without additives,the crystal habit of KCl is ellipsoid-like in the presence of Pb^(2+),the crystal habit of KCl is strip in the presence of Cd^(2+),and the crystal habit of KCl is cavate cube in the presence of sodium *** diffractometry analysis reveals that these additives can change the crystal habit of KCl but not its crystal structure.

关键词： potassium chloride additives crystal habit crystallization

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Anisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy

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Light(Science & Applications) 2024年第7期13卷 1416-1426页

作者： Junjie Yi Changjian guo Ziliang Ruan Gengxin Chen Haiqiang Wei Liwang Lu Shengqi Gong xiaofu Pan Xiaowan Shen Xiaowei Guan Daoxin Dai Kangping Zhong Liu Liu State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityHangzhou 310058China. Guangdong Provincial Key Laboratory of Optical Information Materials and Technology South China Academy of Advanced OptoelectronicsSouth China Normal UniversityHigher-Education Mega-CenterGuangzhou 510006China. National Center for International Research on Green Optoelectronics South China Normal UniversityGuangzhou 510006China Photonics Research Institute Department of Electrical and Electronic EngineeringThe Hong Kong Polytechnic UniversityHung HomKowloonHong Kong(SAR)China. Jiaxing Key Laboratory of Photonic Sensing&Intelligent Imaging Intelligent Optics&Photonics Research CenterJiaxing Research Institute Zhejiang UniversityJiaxing 314000China

Arrayed waveguide grating is a versatile and scalable integrated light dispersion device,which has been widely adopted in various applications,including,optical communications and optical ***,thin-film lithium niobate emerges as a promising photonic integration platform,due to its ability of shrinking largely the size of typical lithium niobate based optical *** would also enable multifunctional photonic integrated chips on a single lithium niobate ***,due to the intrinsic anisotropy of the material,to build an arrayed waveguide grating on X-cut thin-film lithium niobate has never been ***,a universal strategy to design anisotropyfree dispersive components on a uniaxial in-plane anisotropic photonic integration platform is introduced for the first *** leads to the first implementation of arrayed waveguide gratings on X-cut thin-film lithium niobate with various configurations and *** best insertion loss of 2.4 dB and crosstalk of−24.1 dB is obtained for the fabricated arrayed waveguide grating *** of such arrayed waveguide gratings as a wavelength router and in a wavelength-division multiplexed optical transmission system are also demonstrated.

关键词： waveguide arrayed lithium

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Asymmetric Cu Sites for Enhanced CO_(2)Electroreduction to C_(2+)Products

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CCS Chemistry 2024年第5期6卷 1231-1239页

作者： Weiwei guo Xingxing Tan Shunhan Jia Shoujie Liu Xinning Song Xiaodong Ma Limin Wu Lirong Zheng xiaofu Sun Buxing Han Beijing National Laboratory for Molecular Sciences Key Laboratory of Colloid and Interface and ThermodynamicsCenter for Carbon Neutral ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing 100190 Institute of Molecular Metrology College of Chemistry and Chemical EngineeringQingdao UniversityQingdao 266071 School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049 School of Materials Science and Engineering Anhui UniversityHefei 230601 Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049 Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200062

Cu-based electrocatalysts can have excellent activity for the generation of C_(2+)products from a CO_(2)reduction reaction(CO_(2)RR).Cuδ+species is crucial in tuning the performance of the ***,we discovered that Si-doped Cu catalysts had excellent performance for electrochemical CO_(2)to C_(2+)products.A high Faradaic efficiency(FE)of 84.7%was achieved with a current density of 289mA cm^(−2)in the flow-cell *** situ experimental results showed that the significant reconstruction occurred during the electrolysis,resulting in the formation of the asymmetric Cu sites(Cu^(0)-Cu^(+)).The ratio of Cu^(0)and Cu^(+)could be tuned by changing Si *** experiments and theoretical calculations demonstrated that the asymmetric Cu sites caused by the appropriate Si doping promoted CO_(2)activation and strengthened the adsorption of^(*)CO *** was beneficial to the subsequent^(*)CO–^(*)CO dimerization step,and thus,accounted for the enhancement of C_(2+)selectivity.

关键词： carbon dioxide electrocatalysis asymmetric Cu sites C-C coupling green chemistry

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Innovations in metallurgical and materials processes:advancing liquid theory and honoring ***-jie guo's contributions to physical chemistry in metallurgy

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Journal of Iron and Steel Research International 2024年第1期31卷 1-2页

作者： Shuai Liu Jing guo Han-jie guo School of Artificial Intelligence Beijing Technology and Business UniversityBeijing100048China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China

Spanning three decades,***-jie guo's research group has dedicated itself to exploring the fundamental theories and practical applications of physical chemistry within the realm of *** under the assumption that molecul... 详细信息

关键词： chemistry liquid complexes

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垃圾焚烧飞灰水洗液纯化及无机盐分离

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无机盐工业 2019年第3期51卷 67-71,76页

作者：范庆玲郭小甫袁俊生河北工业大学化工学院天津300130 海水资源高效利用化工技术教育部工程研究中心泉州师范学院

使用沉淀剂对垃圾焚烧飞灰水洗液中的重金属进行去除实验,并对去除重金属后水洗液中的无机盐进行分离回收。考察了无机、有机沉淀剂单独使用以及无机-有机沉淀剂联用对水洗液中重金属的去除效果,对纯化后的水洗液进行蒸发结晶分离,对不... 详细信息

使用沉淀剂对垃圾焚烧飞灰水洗液中的重金属进行去除实验,并对去除重金属后水洗液中的无机盐进行分离回收。考察了无机、有机沉淀剂单独使用以及无机-有机沉淀剂联用对水洗液中重金属的去除效果,对纯化后的水洗液进行蒸发结晶分离,对不同沸点温度分离得到的无机盐的纯度进行分析。结果表明,无机沉淀剂碳酸钠与硫化钠相比硫化钠去除重金属的效果较好,在硫化钠与重金属物质的量比为1.5时重金属的总去除率可达89.02%;有机沉淀剂TMT-102、MT-103、RS-2568中去除重金属效果最好的是MT-103,在其添加量为400 mg/L时重金属的总去除率可达99.49%。将无机-有机沉淀剂联用,先以硫化钠与重金属物质的量比为1.5加入硫化钠,再加入40 mg/L的MT-103,飞灰水洗液中重金属的总去除率可高达99.60%。将纯化后的水洗液中的无机氯盐进行蒸发分离,蒸发沸点为114℃时一次蒸发结束,分离后的盐浆在不低于80℃条件下洗涤提纯,得到氯化钠的纯度在95%以上;将母液继续蒸发至沸点温度为126℃,然后降温结晶,粗钾按照液固质量比为1.5进行水洗,得到氯化钾的纯度在96%以上;最后的氯化钙母液蒸发至134℃,然后降温结晶,可得六水合氯化钙。

关键词：垃圾焚烧飞灰水洗液重金属去除蒸发分离无机盐

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天然斜发沸石的改性及其对海水中K^+吸附交换容量的研究

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材料导报 2011年第8期25卷 107-110页

作者：纪志永袁俊生郭小甫河北工业大学海水资源高效利用化工技术教育部工程研究中心天津300130

为提高天然斜发沸石对海水中K+的吸附交换容量,对天然沸石进行了电炉、微波和超声波加热物理改性以及微波化学改性研究。重点考察了不同微波功率和处理时间时盐改性以及不同微波化学改性条件下所得沸石对海水中K+的吸附交换容量,同时对... 详细信息

为提高天然斜发沸石对海水中K+的吸附交换容量,对天然沸石进行了电炉、微波和超声波加热物理改性以及微波化学改性研究。重点考察了不同微波功率和处理时间时盐改性以及不同微波化学改性条件下所得沸石对海水中K+的吸附交换容量,同时对不同改性沸石的晶体结构进行了XRD表征。结果表明,天然斜发沸石经微波盐改性后对海水中K+的吸附交换容量有所提高,并随微波处理功率的增加和时间的延长而增大;经微波化学改性后吸附交换容量显著提高,可达0.71mmol/g;各种改性方式未对沸石的结构构成破坏,所得改性沸石的晶体结构基本相似。

关键词：斜发沸石改性微波超声波交换容量

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继电保护装置插件防护工艺及实施

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新技术新工艺 2013年第3期 121-124页

作者：郭晓甫许继集团有限公司河南许昌461000

电子产品不仅要求其有较高的电气性能指标,还要求其有较高的质量稳定性和可靠性,它与整个制造过程及工艺控制手段具有很大的关系。目前,国内外普遍采用涂覆绝缘胶工艺来提高电子产品的稳定性和可靠性,保证出厂的产品能经得起环境、时间... 详细信息

电子产品不仅要求其有较高的电气性能指标,还要求其有较高的质量稳定性和可靠性,它与整个制造过程及工艺控制手段具有很大的关系。目前,国内外普遍采用涂覆绝缘胶工艺来提高电子产品的稳定性和可靠性,保证出厂的产品能经得起环境、时间的考验,而潮湿、盐雾、霉菌会降低材料的绝缘强度,引起漏电,从而导致故障,因此,必须采取防护措施,以减少环境条件对电子产品可靠性的影响,保证电子产品的工作性能。本文对电子产品在潮湿状况下产生故障的原因进行分析的基础上,也对继电保护装置智能插件进行了防护试验,确定其工艺参数,并组织实施。

关键词： CPU插件防护潮湿盐雾霉菌

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填充沸石的大型离子交换柱内流场模拟

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化工进展 2019年第11期38卷 4831-4837页

作者：郭小甫袁俊生赵颖颖李非纪志永河北工业大学化工学院天津300130 海水资源高效利用化工技术教育部工程研究中心天津300130

针对沸石法海水富钾工程化放大中的关键问题,采用Fluent中多孔介质模型对填充沸石的大型离子交换柱内流场进行了模拟研究。主要考察了沸石的孔隙率和颗粒直径、海水进口速度、沸石柱长径比以及柱内形成的沸石层凹坑等条件对离子交换柱... 详细信息

针对沸石法海水富钾工程化放大中的关键问题,采用Fluent中多孔介质模型对填充沸石的大型离子交换柱内流场进行了模拟研究。主要考察了沸石的孔隙率和颗粒直径、海水进口速度、沸石柱长径比以及柱内形成的沸石层凹坑等条件对离子交换柱内流体流动的影响,结果发现:孔隙率和颗粒直径直接关系到沸石层内流体的速度分布,海水进口速度、沸石柱长径比等条件对沸石层内的流体流动并无显著影响;而在孔隙率和颗粒直径确定的条件下,由于海水冲击形成的凹坑对沸石层内流体影响较大,会在凹坑两侧形成滞留区,进而影响沸石对海水中钾的吸附。根据模拟结果优化了填充材料、设备结构以及工艺等参数,为沸石法海水富钾关键装备进一步扩大规模提供了理论支撑。

关键词：沸石多孔介质离子交换柱流场模拟

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Emerging direct current triboelectric nanogenerator for high-entropy mechanical energy harvesting

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Science China(Technological Sciences) 2024年第5期67卷 1297-1316页

作者： CHEN Jie guo RuiLong guo HengYu College of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 401331China Department of Applied Physics Chongqing UniversityChongqing 401331China

In the era of the Internet of Things(IoT),the provision of sustainable power to distributed,mobile,and low-power-consumption electronic devices is a critical *** overcome this challenge,the triboelectric nanogenerator(TENG),a highly efficient high-entropy mechanical energy harvesting device,was developed in *** device enables the direct conversion of irregular and low-frequency mechanical energy into pulsed alternating current(AC)***,the incompatibility of most electronic devices with AC signals necessitates rectifier circuits or generators that deliver direct current(DC)*** recent years,DC-TENGs have undergone extensive development,achieving significant milestones in various application fields while also facing crucial challenges that require *** this review,three categories of DC-TENG devices with distinct operating mechanisms are comprehensively explored:multiphase coupling,mechanical rectification,and air *** typical structures and working mechanisms are thoroughly discussed,and specific output performance limitations,along with corresponding optimization strategies,are ***,the applications of DC-TENGs in various scenarios are ***,the challenges faced by DC-TENGs and potential solutions are analyzed to guide further advancements in this technology.

关键词： TENG direct current working mechanisms output performance limitations optimization strategies

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