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The science of saline lakes:the need for a multidisciplinary approach

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Journal of Oceanology and Limnology 2023年第4期41卷 1221-1225页

作者： Egor ZADEREEV Katia HUESO-KORTEKAAS tianlong deng Mianping ZHENG Institute of Biophysics Krasnoyarsk Research CenterSiberian Branch of Russian Academy of SciencesAkademgorodokKrasnoyarsk 660036Russia Siberian Federal University Krasnoyarsk 660041Russia Department of Mechanical Engineering ICAIUniversidad Pontificia ComillasAlberto Aguilera 25Madrid 28015Spain Key Laboratory of Marine Resource Chemistry and Food Technology(TUST) Ministry of EducationCollege of Marine and Environmental SciencesTianjin University of Science and TechnologyTianjin 300457China MLR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China

Saline lakes are widespread on all continents.Since 1979,an informal international association of salt lake researchers from a variety of disciplines has sponsored a series of triennial conferences to foster scientific exchange and our understanding of saline lakes.International Society for Salt Lake Research(ISSLR,***)was founded in 1994 to establish effective liaison between persons interested in any aspect of inland saline waters,to encourage these interests,and to educate the public in the scientific use,management,and conservation of salt lakes.ISSLR conferences are held triennially.The conferences are usually hosted by a local University or research institution and provide an excellent opportunity for networking among globally dispe rsed researchers.

关键词： globally inland widespread

Novel montmorillonite-sulfur composite for enhancement of selective adsorption toward cesium

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Green Energy & Environment 2021年第6期6卷 893-902页

作者： Shangqing Chen Jiayin Hu Guoliang Mi Yafei Guo tianlong deng Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization College of Chemical Engineering and Materials ScienceTianjin University of Science and TechnologyTianjin300457China College of Marine and Environmental Science Tianjin University of Science and TechnologyTianjin300457China

The selective elimination of radioactive cesium from complicated wastewater is imperative in view of environment and human health.Montmorillonite has been accepted as one of the most promising adsorbents for cesium purification.However,its poor selectivity still remains a major challenge.Herein,a novel montmorillonite-sulfur composite was developed via a facile one-step solvent-free method and used for Cs^(+) removal.Owing to the fact that soft Lewis base S^(2-) ligand interacted more strongly with softer Lewis acid Cs^(+) than other cations,the capacity and selectivity towards Cs^(+) was significantly enhanced.In this case,a large capacity of 160.9 mg g^(-1) was achieved.The distribution coefficient value(~4000 mL g^(-1))was 3-times larger than that of pristine montmorillonite(~1500 mL g^(-1)).Moreover,this composite could be easily recycled and reused within five times recycling experiments.Therefore,this low-cost and facilely prepared composite are expected to be used for the selective removal of Cs^(+) from complicated wastewater containing various competing ions.

关键词： Cesium Montmorillonite Sulfur Selectivity Wastewater

Silver-catalyzed bioleaching for raw low-grade copper sulphide ores

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Frontiers of Chemical Science and Engineering 2009年第3期3卷 250-254页

作者： tianlong deng Yafei GUO Mengxia LIAO Dongchan LI College of Materials Chemistry and Chemical EngineeringChengdu University of TechnologyChengdu 610059China Qinghai Institute of Salt Lakes Chinese Academy of SciencesXining 810008China

This research was conducted to investigate the biooxidation and copper dissolution from raw low-grade refractory copper sulphide ores located in the Xinjiang Autonomous Region of China using adapted Thiobacillus ferrooxidans bacteria.In order to accelerate the bioleach-ing rate,the adapted mixed bacteria and silver ion catalyst were tested in the leach columns at laboratory scale.The overall acid consumption was 4.3kg sulphuric acid per kg of dissolved copper and was linearly related to the percent copper dissolution.The calculated copper dissolution rates obey the Shrinking Core Model.The relative activation energy of the whole biooxidative leaching stages was calculated to be 48.58kJ/mol.

关键词： green process biohydrometallurgy bioleach-ing reaction kinetics sulphide ores

Simulation studies on metastable phase equilibria in the aqueous ternary systems (NaCl-MgCl_(2)-H_(2)O) and (KCl-MgCl_(2)-H_(2)O) at 308.15K

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Frontiers of Chemical Science and Engineering 2009年第2期3卷 172-175页

作者： tianlong deng Baojun ZHANG Dongchan LI Yafei GUO Key Laboratory of Salt Lake Resources and Chemistry Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008China College of Materials Chemistry and Chemical EngineeringChengdu University of TechnologyChengdu 610059China

The solubilities and densities of the aqueous metastable ternary systems(NaCl-MgCl_(2)-H_(2)O)and(KCl-MgCl_(2)-H_(2)O)at 308.15 K were determined by the isothermal evaporation method.On the basis of the experimental results,the phase diagrams for those systems were plotted.It was found that the former system belongs to the hydrate-I type with one invariant point of(NaCl+MgCl_(2)·6H_(2)O),two univariant curves,and two crystal-lization regions corresponding to halite(NaCl)and bischofite(MgCl_(2)·6H_(2)O);and the latter system belongs to the type of incongruent-double salts with two invariant points of(KCl+KCl·MgCl_(2)·6H_(2)O)and(MgCl_(2)·6H_(2)O+KCl·MgCl_(2)·6H_(2)O),three univariant curves,and three crystallization regions corresponding to potassium chlor-ide(KCl),carnallite(KCl·MgCl_(2)·6H_(2)O)and bischofite(MgCl_(2)·6H_(2).No solid solutions were found in both systems.

关键词： green chemistry solar pond technique simu-lation metastable phase equilibrium solubility

Caloric evaporation of the brine in Zangnan Salt Lake

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Frontiers of Chemical Science and Engineering 2011年第3期5卷 343-348页

作者： Shiqiang WANG Yafei GUO Nan ZHANG Lingzhong BU tianlong deng Mianping ZHENG Tianjin Key Laboratory of Marine Resources and Chemistry Tianjin University of Science and TechnologyTianjin 300457China Tianjin Centre of China Geological Survey at CGS Tianjin 300170China Key Laboratory of Saline Lake Resources and Environment in Ministry of Land and Resources Institute of Mineral Resources at Chinese Academy of Geological SciencesBeijing 100037China CAS Key Laboratory of Salt Lake Resources and Chemistry Qinghai Institute of Salt Lakes at CASXining 810008China

Zangnan Salt Lake on the south of the Tibet is a type of carbonate lake with high concentrations of lithium,boron,and potassium and obviously it differs from seawater in its chemical composition.An experimental simulation of the caloric evaporation of the lake’s brine was conducted byfirst freezing the brine and then performing isothermal evaporation at 288.15 K.The freezing path and the physicochemical properties of the brine were determined.The crystallization sequence was natron,hydrohalite,halite,sylvite,zabuyelite,trona,aphthitalite,thermonatrite,and borax.Rubidium and cesium salts did not crystallized out but concentrated in the mother solution.The physicochemical properties(density,refractive index,conductivity,and pH)of the liquid phase changed as the evaporation progressed.In the beginning of the evaporation processes,the concentration of potassium ions in the liquid phase gradually increased but later it decreased.A peak value of 55.21 g/L was obtained when the evaporation was 88%complete.When the mineral aphthitalite began to crystallize;the concentra-tions of B2O3,Li+,Rb+,and Cs+gradually increased as the evaporation progressed.When the evaporation was 98%complete,their concentrations in the mother liquor were 40.77 g/L,4.838 g/L,400.17 mg/L and 31.95 mg/L,respectively.This essential fundamental study can provide an important reference for the comprehensive utilization of brines in Zangnan Salt Lake.

关键词： Zangnan Salt Lake evaporation crystalliza-tion path freezing

Environmental geochemistry of arsenic in sediment-water interface of Poyang Lake, China

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Chinese Journal Of Geochemistry 2006年第B8期25卷 142-143页

作者： Mengxia LIAO tianlong deng College of Chemistry and Chemical Engineering Chengdu University of Technology Chengdu 610059 China Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining 810008 China

High special surface area and“warm light”responsive ZnO:Synthesis mechanism,application and optimization

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Bioactive Materials 2022年第1期7卷 181-191页

作者： Xinxin Miao Fen Yu Kuan Liu Zhongsheng Lv Jianjian deng tianlong Wu Xinyan Cheng Wei Zhang Xigao Cheng Xiaolei Wang Department of Orthopaedic Surgery The Second Affiliated Hospital of Nanchang UniversityNanchangJiangxi330006PR China College of Chemistry NanChang UniversityNanChangJiangxi330031PR China Institute of Translational Medicine Nanchang UniversityNanchangJiangxi330031PR China Jiangxi Key Laboratory of Nanobiomaterials Institute of Advanced MaterialsEast China Jiaotong UniversityNanchangJiangxi330013PR China

In this study,a new series of zinc oxide(ZnO)with high specific surface area and narrow energy band gap are prepared using a facile microwave-induced method.The corresponding formation mechanism is also discussed for the first time.Due to the introduction of C,these ZnO can be excited by long wave temperature light without harmful short wave radiation,and play an efficient photocatalytic activity.This valuable property fundamentally improves the biological safety of its photocatalytic application.Herein,taking teeth whitening as an example,the photocatalytic performance of ZnO is evaluated.The“pure”yellow light-emitting diode(PYLED)with high biological safety is used as the excitation source.It is found that this method could effectively remove pigment on the tooth surface through physical adsorption.In addition,these ZnO could generate active oxygen to degrade the pigment on the tooth surface under the irradiation of yellow light.Some further optimization of these“warm light”responsive ZnO is also discussed in this systematical study,which could open up new opportunities in biomedical field.

关键词： ZnO Photocatalysis Yellow light Teeth whitening

脉冲电弧离子镀工艺参数对氧化锌压电涂层结构与电阻的影响

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材料保护 2024年第5期57卷 158-164页

作者：步天龙贾杰李迪张大沛寇汉鹏李文竹邓建钢兰贞波徐卓林国网内蒙古东部电力有限公司呼伦贝尔供电公司内蒙古呼伦贝尔021000 国网电力科学研究院武汉南瑞有限责任公司湖北武汉430074

为了给探索、提升ZnO压电薄膜的制备工艺提供一定的科学参考及依据,通过脉冲电弧离子镀的方法在不锈钢基底上沉积结合力强的纳米氧化锌(ZnO)压电涂层,并系统研究工作气压及靶基距这2个关键制备工艺参数对ZnO压电传感涂层的晶体结构及电... 详细信息

为了给探索、提升ZnO压电薄膜的制备工艺提供一定的科学参考及依据,通过脉冲电弧离子镀的方法在不锈钢基底上沉积结合力强的纳米氧化锌(ZnO)压电涂层,并系统研究工作气压及靶基距这2个关键制备工艺参数对ZnO压电传感涂层的晶体结构及电阻性能的影响。结果表明:工作气压降低则涂层结晶度提高,而随靶基距增大,结晶度先增加后降低,电阻随之降低。这一结果为新型永久薄膜压力传感器(PMTS)在高压及超高压智能套管的压力监测领域的应用提供了一定的科学参考及依据。

关键词：脉冲电弧离子镀氧化锌压电传感器晶体结构电阻

Natural history and cycle threshold values analysis of COVID-19 in Xiamen City,China

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Infectious Disease Modelling 2022年第3期7卷 486-497页

作者： Bin deng Weikang Liu Zhinan Guo Li Luo tianlong Yang Jiefeng Huang Buasiyamu Abudunaibi Yidun Zhang Xue Ouyang Demeng Wang Chenghao Su Tianmu Chen State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics School of Public HealthXiamen UniversityXiamen CityFujian ProvincePeople's Republic of China Xiamen Center for Disease Control and Prevention Xiamen CityFujian ProvincePeople's Republic of China Zhongshan Hospital Fudan University(Xiamen Branch)Xiamen CityFujian ProvincePeople's Republic of China

Objective:This study elaborated the natural history parameters of Delta variant,explored the differences in detection cycle thresholds(Ct)among cases.Methods:Natural history parameters were calculated based on the different onset time and exposure time of the cases.Intergenerational relationships between generations of cases were calculated.Differences in Ct values of cases by gender,age,and mode of detection were analyzed statistically to assess the detoxification capacity of cases.Results:The median incubation period was 4 days;the detection time for cases decreased from 25 to 7 h as the outbreak continued.The average generation time(GT),time interval between transmission generations(TG)and serial interval(SI)were 3.6±2.6 days,1.67±2.11 days and 1.7±3.0 days.Among the Ct values,we found little differences in testing across companies,but there were some differences in the gender of detected genes.The Ct values continuous to decreased with age,but increased when the age was greater than 60.Conclusion:This epidemic was started from aggregation of factories.It is more reasonable to use SI to calculate the effective reproduction number and the time-varying reproduction number.And the analysis of Ct values can improve the positive detection rate and improve prevention and control measures.

关键词： COVID-19 Natural history Cycle threshold value