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Journal of Rare Earths 2024年第4期42卷 660-667页

作者： Guangying Fu Dongsen Mao Jun Yu Qiangsheng Guo School of Chemical and environmental engineering Shanghai Institute of TechnologyShanghai21418 China The ZeoMat Group Qingdao Institute of Bioenergy and Bioprocess TechnologyCASQingdao26611China

Several ternary oxides CuCeZrO_(y)(CCZ)were synthesized by a facile grinding method followed by calcination at high temperatures,and used as catalysts for co oxidation at low *** influences of calcination temperature(400-600℃)on the physicochemical properties of the assynthesized ternary oxides were investigated by thermogravimetric analysis/differential scanning calorimetry(TGA/DSC),X-ray diffraction(XRD),transmission electron microscopy(TEM),Raman,inductively coupled plasma-optical emission spectrometry(ICP-OES),N_(2) adsorption,H_(2)-temperature programmed reduction(H_(2)-TPR),and X-ray photoelectron spectroscopy(XPS)*** results show that the increase in calcination temperature from 400 to 500℃is conducive to the high dispersion of CuOx on catalyst surface and the incorporation of Cu species into the support to form the Cu-Ce-Zr-O solid *** raising of calcination temperature from 500 to 600℃,however,leads to the segregation of Cu species from the solid solution to aggregate on support surface and growth of highly dispersed CuOx *** highest catalytic activity is acquired over the CCZ calcined at 500℃,which can be ascribed to the largest contents of Cu+species and oxygen vacancies owing to the formation of the maximum amount of Cu-Ce-Zr-O solid solution.

关键词： CuCeZrO_(y)catalyst co oxidation Calcination temperature Grinding method Oxalate precursor Rare earths

Synergistic promotion of particulate matter reduction and production performance via adjusting electrochemical reactions in the zinc electrolysis industry

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Frontiers of environmental Science & engineering 2024年第1期18卷 23-33页

作者： Zizhen Ma Jingkun Jiang Lei Duan Jianguo Deng Fuyuan Xu Zehui Li Linhua Jiang Ning Duan School of environmental and Municipal engineering Qingdao University of TechnologyQingdao 266520China State Key Joint Laboratory of environmental Simulation and Pollution control School of the EnvironmentTsinghua UniversityBeijing 100084China State Key Laboratory of Pollution control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China School of Physics Peking UniversityBeijing 100871China

Heavy particulate matter (PM) pollution and high energy consumption are the bottlenecks of hydrometallurgy, especially in the electrolysis process. Therefore, an urgent need is to explore PM reduction methods with production performance co-benefits. This study presents three PM reduction methods based on controlling operating parameters, i.e., lowering electrolyte temperature, H2SO4 concentration, and current density of the cathode. The optimized conditions were also investigated using the response surface methodology to balance the PM reduction effect and Zn production. The results showed that lowering electrolyte temperature is the most efficient, with an 89.0% reduction in the PM generation flux (GFPM). Reducing H2SO4 concentration led to the minimum side effects on the current efficiency of Zn deposition (CEZn) or power consumption (PC). With the premise of non-deteriorating CEZn and PC, GFPM can be reduced by 86.3% at the optimal condition (electrolyte temperature = 295 K, H2SO4 = 110 g/L, current density = 373 A/m^(2)). In addition, the reduction mechanism was elucidated by comprehensively analyzing bubble characteristics, electrochemical reactions, and surface tension. Results showed that lower electrolyte temperature inhibited the oxygen evolution reaction (OER) and compressed gas volume. Lower H2SO4 concentration inhibited the hydrogen evolution reaction (HER) and reduced electrolyte surface tension. Lower current density inhibited both OER and HER by decreasing the reaction current. The inhibited gas evolutions reduced the microbubbles’ number and size, thereby reducing GFPM. These results may provide energy-efficient PM reduction methods and theoretical hints of exploring cleaner PM reduction approaches for industrial electrolysis.

关键词： Zinc electrolysis Particulate matter Energy consumption Operating parameters Bubble characteristic Electrochemical reaction

Early Triassic Legoupil Formation in Schmidt Peninsula,Antarctic Peninsula:Provenance and Depositional Settings

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Journal of Earth Science 2024年第2期35卷 317-331页

作者： Chao Zhang Ying-Chun Cui Chen-Guang Liu Fang-Hua Cui Lu-Yuan Wang Wei-Qiang Zhang School of Resources and environmental engineering Shandong University of TechnologyZibo255049China MNR Key Laboratory for Polar Science Polar Research Institute of ChinaShanghai201209China Key Laboratory of Marine Sedimentology and environmental Geology First Institute of OceanographyState Oceanic AdministrationQingdao266061China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao266061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and ResourcesChangchun130061China

Geochemical compositions can be used to determine the tectonic setting of sedimentary basins,while where the link of source to sink is no longer preserved,detrital zircon age patterns can aid in resolving the original basin *** metasedimentary Legoupil Formation,located at Cape Legoupil and the Schmidt Peninsula,could give a hint for the tectonic evolution of Antarctic *** this contribution,we constrain the sedimentary provenance of the Legoupil Formation through geochemistry and detrital zircon U-Pb *** petrography and geochemical features indicate that the provenance of the Legoupil Formation could be felsic *** zircon grains record a steady supply of Permian and Ordovician material into the Legoupil *** youngest concordant zircon ages of 262 Ma suggest that the depositional time of Legoupil Formation is no older than Late *** detrital zircon age spectrum of Legoupil Formation suggests that the Legoupil Formation sediments should be derived from regional sources endemic to western Gondwana prior to its *** with the previous studies,geochemistry and detrital zircons reflect an active continental margin tectonic setting and the detrital zircon spectra of Legoupil Formation are similar to the ones deposited in forearc tectonic setting.

关键词： Schmidt Peninsula Legoupil Formation Trinity Peninsula Group detrital zircons Antarctic Peninsula geochemistry

Study on removal of nitrate nitrogen by Iron-Silver Alloy

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石化技术 2020年第3期27卷 47-48页

作者：吴依玲 Liu Huaping Zhu Huanzhi 聂兆广 Hu Yanfang college of Chemistry and Chemical engineering Qingdao UniversityQingdao 266071 shanghai jinshan combined environmental engineering co.qingdao branch ShandongQingdao 266033

With the rapid development of industry,a large number of wastewater discharged from factory production leads to a gradual increase in nitrate content in natural *** iron-silver copper alloy as reactant and catalyst can effectively reduce the content of nitrate nitrogen in *** experimental results show that the loading rate of silver is 3% and pH is 2 at room *** maximum removal rate of nitrate nitrogen is 91.09%.

关键词： nitrate nitrogen iron-silver alloy dilute sulfuric acid spectrophotometry

Novel perspective for urban water resource management: 5R generation

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Frontiers of environmental Science & engineering 2021年第1期15卷 1-13页

作者： Lijie Zhou Hongwu Wang Zhiqiang Zhang Jian Zhang Hongbin Chen Xuejun Bi Xiaohu Dai Siqing Xia Lisa Alvarez-cohen Bruce ERittmann State Key Laboratory of Pollution control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China shanghai Institute of Pollution control and Ecological Security Shanghai 200092China college of Chemistry and environmental engineering Shenzhen UniversityShenzhen 518060China EnviroSystems engineering and Technology co. Ltd.Beijing 100083China National engineering Research Center for Urban Pollution control Shanghai 200092China college of environmental Science and engineering Qingdao University of TechnologyQingdao 266033China Department of Civil and engineering University of CaliforniaBerkeleyCA 94720-1500USA Biodesign Swette Center for environmental Biotechnology Arizona State UniversityTempeAZ 85287-5701USA

Demand for water is expanding with increases in population,particularly in urban areas in developing ***,urban water system needs a novel perspective for upgradation with *** perspective presents a novel 5R approach for managing urban water resources:Recover(storm water),Reduce(toilet flushing water),Recycle(gray water),Resource(black water),and Reuse(advanced-treated wastewater).The 5R generation incorporates the latest ideas for harvesting storm water,gray water,and black water in its several *** paper has briefly demonstrated each R of 5R generation for water treatment and *** has the chance to upgrade its urban water systems according to 5R ***,a demonstration project of 5R generation has been installed in qingdao International Horticultural Exposition,and Dalian International convention Center(China)has applied 5R,achieving over 70%water *** 5R offers promise for moving solutions for urban water scarcity from“hoped for in the future”to“realistic today”.

关键词： 5R generation Recover Reduce Recycle Resource Reuse

Pollution sources of atmospheric fine particles and secondary aerosol characteristics in Beijing

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Journal of environmental Sciences 2020年第9期32卷 91-98页

作者： Xi Zhang Kai Zhang Huiping Liu Wenli Lv Masahide Aikawa Bing Liu Jinhe Wang State Key Laboratory of environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China School of Municipal and environmental engineering Co-Innovation Center for Green Building of Shandong ProvinceShandong Jianzhu UniversityJinan 250101China Faculty of environmental engineering The University of Kitakyushu1-1HibikinoWakamatsuKitakyushuFukuoka 808-0135Japan qingdao Hongrui Electric Power engineering consulting co. LtdQingdao 266100China Resources and Environment Innovation Research Institute School of Municipal and Environmental EngineeringShandong Jianzhu UniversityJinan 250101China shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3) Department of Environmental Science and EngineeringFudan UniversityShanghai 200438China

To investigate the secondary formation and pollution sources of atmospheric particles in urban Beijing,PM2.5 and its chemical components were collected and determined by URG-9000 D ambient ion monitor(AIM) from March 2016 to January *** water-soluble ions(WSIs), NO3-,SO42- and NH4+(SNA) had the largest proportion(77.8%) with the total concentration of 23.8 μg/***,as fine particle pollution worsened,the NO3-,SO42- and NH4+ concentrations increased basically,which revealed that secondary aerosols were the main cause of particle pollution in ***,the particle neutralization ratio(1.1),the ammonia to sulfate molar ratio(3.4) and the nitrate to sulfate molar ratio(2.2) showed that secondary aerosols are under ammonium-rich conditions with the main chemical forms of NH4 NO3 and(NH4)2 SO4,and vehicle emission could be the main anthropogenic source of secondary aerosols in *** analysis further indicated that secondary aerosols,solid fuel combustion,dust and marine aerosol were the principal pollution sources of PM2.5,accounting for about 46.1%,22.4% and 13.0%,respectively,and Inner Mongolia and Hebei Provinces could be considered as the main potential sources of PM2.5 in urban *** addition,secondary formation process was closely related with gaseous precursor emission amounts(SO2,NO2,NH3 and HONG),atmospheric ozone concentration(O3),meteorological conditions(temperature and relative humidity) and particle *** analysis of the thermodynamic equilibrium model(ISORROPIA Ⅱ)revealed that controlling total nitrate(TN) is the effective measure to mitigate fine particle pollution in Beijing.

关键词： pollution aerosol sources

The teleconnection between marine silicon supply and desertification in China

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Chinese Journal of Oceanology and Limnology 2007年第1期25卷 116-122页

作者：杨东方吴建平陈生涛卢青 School of environmental and Public Health Wenzhou Medical College Wenzhou 325035 China North China Sea Environmental Monitoring Center SOA Qingdao 266033 China College of Fishery Science Shanghai Fisheries University Shanghai 200090 China Huanghai Institute of Marine Survey and engineering Qingdao 266033 China North China Sea environmental Monitoring Center SOA Qingdao 266033 China

Desertification has been notably expanding in China in the recent decade, especially in North China where dust/sand storm （DSS） frequently assaulted local communities. Analyses in marine ecology found that the earth ecosystem could be able to complement nutrient silicon for keeping sustainable development of marine ecosystem, and decreasing co2 concentration in the atmosphere; as a result, the area of desertification would be enlarged. Modem human being activities have resulted in constant changes in the amount of silicon transport from land into sea, leading to oversupply of nitrogen and phosphorus but silicon in seawater. The proportion of nitrogen, phosphorus and silicon was seriously imbalanced and the limitation of silicon for phytoplankton growth has become more serious. The silicon deficiency has damaged the marine ecosystem in coastal regions and slowed down the carbon sedimentation in the atmosphere of the world. The authors believe that the continual discharge of co2 into the atmosphere is the cause for the global warming including marine water temperature rise. consequently, the earth ecosystem would have to trigger its complementary action to resume to the silicon balance by algae bloom in seawater for reducing air and water temperatures. In order to complement nutrient silicon into the sea, the ecosystem would transport silicon via the atmosphere; therefore, the desertification in the inner land is a natural reaction. As marine phytoplankton booming can reduce the co2 concentration in the atmosphere and further ease the green-house effect, during this process, a large amount of silicon are demanded by the ecosystem, which human being are unable to stop desertification from happening but slow down the progress and ease the risk. Therefore, as an important role in earth ecosystem, people should reduce the co2 discharge into the atmosphere first; then, the normal function of river transporting silicon must be restored. In this way, the co2 in the atmospher

关键词： silicon dust/sandstorm (DSS) desertification marine ecosystem earth ecosystem

A new two-dimensional experimental apparatus for electrochemical remediation processes

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Chinese Journal of Chemical engineering 2015年第8期23卷 1389-1397页

作者：顾莹莹付融冰李鸿江安慧 Department of environmental & Safety engineering China University of Petroleum (East China) shanghai Academy of environmental Sciences qingdao Water Group co.Ltd.

Electrochemical extraction of contaminants from soils is a promising soil decontamination technology. Various experiments have been conducted to study electrochemical reactions and geochemical processes in the electrochemical extraction using different experimental apparatuses. This paper presents the development of a new closed two-dimensional(2D) apparatus that can better simulate the field application of the technology and accurately monitor the most important electrochemical parameters to understand the process. The innovative features of the new apparatus include the outer and inner electrodes designed to apply a non-uniform electrical field across the specimen as in the field electrochemical remediation process, the probes installed to measure the 2D distribution of electrical voltage, and the gas and fluid volume measurement devices used to accurately monitor the gas generation and electroosmotic flow rates at both electrodes as a function of time. The components of this new apparatus and the features of each component are described. The operating procedure and some typical results from three experiments with the apparatus are demonstrated. The results show that the variation of the gas generation rate is in good agreement with the electric current. Their relation provides a valid evaluation for electrochemical behavior of the system and Faraday's laws of electrolysis. The 2D profiles of cadmium concentration and voltage distribution at the end of the experiment reveal the great effects of a non-uniform electrical field on the contaminant mobilization.

关键词： Electrochemical extraction 2D experimental apparatus Non-uniform electrical field Gas generation rate

Effect of Failure Mode of Taut Mooring System on the Dynamic Response of A Semi-Submersible Platform

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China Ocean engineering 2021年第6期35卷 841-851页

作者： WANG Teng HAO jun-jie WU Xiao-ni LI Ye WANG Xiao-tong Department of Naval Architecture and Offshore engineering China University of Petroleum(East China)Qingdao 266580China shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure Department of Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Ocean engineering School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China China National Oil and Gas Exploration and Development co. Ltd.Beijing 100034China

Mooring system failure can lead to largely different dynamic response of floating structures when compared to the response under the condition of intact mooring *** a semi-submersible platform with taut mooring system under extreme environmental conditions,the typical mooring system failure includes anchor line breaking failure due to the broken anchor line,and the anchor dragging failure caused by the anchor failure in the seabed soil due to the shortage of the anchor bearing ***,study on the mooring failure caused by anchor failure is *** current work investigates the effect of three failure modes of taut mooring system on dynamic response of a semi-submersible platform,including one line breaking failure,two lines breaking failure,and one line breaking with one line attached anchor dragging *** nonlinear polynomial mooring line model in AQWA was used with integrating the load and displacement curve from the anchor pulling study to characterize the anchor dragging behavior for mooring system failure caused by the anchor *** offsets of the platform and the tension of mooring lines were analyzed for mooring system failure with 100-year return *** is found that the mooring failure of one line breaking with one line attached anchor dragging is a case between the other two mooring *** traditional mooring analysis considering only the damaged condition with one line breaking is not safe *** the simple way of mooring analysis of two lines breaking is too conservative for the costly offshore engineering.

关键词： taut mooring system failure semi-submersible platform dynamic response anchor dragging line breaking

Oxygen vacancy O-terminated surface:The most exposed surface of hexagonal WO3(001)surface

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Chinese Chemical Letters 2020年第8期31卷 2095-2098页

作者： Feng Hui Tian Zhenze Liu Jin Tian Yunfan Zhang Institute of computational Science and engineering State Key Laboratory of Bio-Fibers and Eco-Textiles&College of Chemistry and Chemical Engineering&College of Environmental Science and EngineeringQingdao UniversityQingdao 26607 JChina

It is known that exposed surface determines material’s ***3 is widely used in gas sensing and its working surface is proposed to control its ***,the working surface,or most exposed surface with detailed surface structure remain *** this paper,DFT calculation confirmed that oxygen vacancy O-terminated surface is the most exposed hexagonal WO3(001)surface,judging from competitive adsorption of co and O2,working surface determination for co sensing and comparison of oxygen vacancy formation ene rgies on different h-WO3(001)*** is found that DFT can be a useful alternate for exposed surface *** results provide new perspectives and performance explanations for material research.

关键词： Hexagonal WO3(001) Oxygen vacancy O-terminated surface competitive adsorption Working surface Exposed surface determination theoretically