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Identified the hydrochemical and the sulfur cycle process in subsidence area of Pingyu mining area using multi-isotopes combined with hydrochemistry methods

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Journal of Groundwater Science and Engineering 2024年第1期12卷 62-77页

作者： Hui-Meng Su Fa-Wang Zhang Jing-Yu Hu Jin-Feng Lei Wei Zuo Bo Yang Yu-Hua Liu School of Environmental Studies China University of GeosciencesWuhan 430074China center for Hydrogeology and Environmental Geology China Geological SurveyBaoding 071051Hebei ProvinceChina Henan Branch China South-to-North Water Diversion Middle Route Corporation LimitedZhengzhou 450046China The Fifth Geological Survey Institute Henan Provincial Bureau of Geology and Mineral ResourcesZhengzhou 450012China Natural resources Science and Technology Innovation center of Henan Province(research on Eco-Environmental Assessment and Restoration Technology) Zhengzhou 450012China

Groundwater serves as an important water source for residents in and around mining *** achieve scientific planning and efficient utilization of water resources in mining areas,it is essential to figure out the chemical formation process and the ground water sulfur cycle that transpire after the coal mining *** on studies of hydrochemistry and D,^(18)O-H_(2)O,^(34)S-SO_(4)isotopes,this study applied principal component analysis,ion ratio and other methods in its attempts to reveal the hydrogeochemical action and sulfur cycle in the subsidence area of Pingyu mining *** study discovered that,in the studied area,precipitation provides the major supply of groundwater and the main water chemistry effects are dominated by oxidation dissolution of sulfide minerals as well as the dissolution of carbonate and silicate *** sulfate in groundwater primarily originates from oxidation and dissolution of sulfide minerals in coal-bearing strata and human *** mixed sulfate formed by the oxidation of sulfide minerals and by human activities continuously recharges the groundwater,promoting the dissolution of carbonate rock and silicate rock in the process.

关键词： PCA Ion ratio Water chemistry Sulfide minerals Multi-isotopes Subsidence area of mining area

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The selective adsorption of rare earth elements by modified coal fly ash based SBA-15

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Chinese Journal of Chemical Engineering 2022年第7期35卷 155-164页

作者： Jinglei Cui Qian Wang Jianming Gao Yanxia Guo Fangqin Cheng State Environmental Protection Key Laboratory of Efficient Resource utilization Techniques of coal Waste Institute of Resources and Environmental EngineeringShanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related WastesShanxi UniversityTaiyuan 030006China

Rare earth elements(REE)are strategic resources and the recycling of REE in alternative resources is urgent and gets increasingly ***,the separation of REE in these alternative resources is still a challenge due to the low concentration of REE and multi coexisted ions in acidic *** this study,the species distribution of REE within the pH 0-8.0 was *** SBA-15 originated from coal fly ash was modified by two steps with(3-aminopropyl)triethoxysilane(APTES)and diethylenetriaminepentaacetic dianhydride(DTPADA)to obtain DTPADA-SBA-15 adsorbent,which was applied to the selective adsorption of *** results showed that DTPADA-SBA-15 possessed excellent adsorption performance on the selective adsorption of REE,including Eu,Gd,Tb,Nd and Sm,in acidic solution(pH 2)with multi competing *** FT-IR and Zeta potential characterization verified that the chemical adsorption through the coordination of O in DTPADA-SBA-15 with REE was dominant at lower pH *** study of adsorption kinetics indicated that the adsorption of rare earth metal ions followed pseudosecond-order kinetic,of which the adsorption process followed the Langmuir isotherm model.

关键词： Rare earth elements Selective adsorption SBA-15 Modification

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Bainite Transformation of Low-carbon and Boron-containing Steel under Continuous Cooling

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Journal of Iron and Steel research International 2014年第3期21卷 359-363页

作者： Zhi-hong ZHANG Xiang-xin XUE Institute of Metallurgical resources and Environmental Engineering Northeastern University Liaoning Key Laboratory of Metallurgical resources Circulation Science Liaoning Engineering Technology research center of comprehensive utilization of Boron resources Liaoning University Key Laboratories of Ecological utilization Technology of Boron resources and Boron Materials

The effects of deformation temperature and strain on bainite transformation of low carbon steel and boron- containing steel were investigated under continuous cooling conditions by means of dilatometric measurement and mi- crostructure observation. The results show that with decreasing the deformation temperature from 1000 to 800 ℃ and increasing strains, bainite start temperature for boron-containing low carbon steel increases, whereas it decreases for low carbon steel under the same condition. The bainite microstructures are easily obtained for boron-containing steel deformed at different temperatures and different strains compared with plain low carbon steel. With increasing the continuous cooling rate, the bainite start temperature under deformed condition is about 20 ℃ higher than that under undeformed condition for boron-containing steel, but it changes slightly when the cooling rate is 20 ℃/s or more.

关键词： bainite start temperature boron containing steel phase transformation bainite

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中国废弃矿井抽水蓄能及多能源互补开发模式研究（英文）

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Journal of Central South University 2024年第8期 2860-2871页

作者：杨科吕鑫许潮水方珏静段敏克张寨男 State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep coal Mines Anhui University of Science and Technology Institute of Energy Hefei Comprehensive National Science Center School of Mining Engineering Anhui University of Science and Technology School of Chemical Engineering University of Adelaide

随着中国地下能源的长期开采，废弃矿井数量将持续增加，为能源再利用和生态恢复带来新的挑战和机遇。将废弃矿井改造为抽水蓄能电站，并在矿井周边形成多能源互补开发模式，为矿区生态恢复和矿井再利用提供了一种绿色、经济的方案。本... 详细信息

随着中国地下能源的长期开采，废弃矿井数量将持续增加，为能源再利用和生态恢复带来新的挑战和机遇。将废弃矿井改造为抽水蓄能电站，并在矿井周边形成多能源互补开发模式，为矿区生态恢复和矿井再利用提供了一种绿色、经济的方案。本文总结了五个关键科学问题：水道系统和地下厂房的防渗、支护和加固，多巷道的引流和节流，人员与设备的安全保障，以及废弃矿井的水下传感和大数据系统。根据废弃矿井的开发场景，划分三种开发利用模式：露天矿坑全地表利用、塌陷矿井半地表利用和废弃矿井全地下利用。结合抽水蓄能电站规模和城市电网特性，提出四种电网模式，确保电能输送、调峰以及光伏电站的联合运行，充分发挥废弃矿井的资源潜力。通过全面梳理这五个关键科学问题和七种利用模式，本文为废弃矿井的多能源互补综合开发提供了明确的路径，并为中国未来废弃矿井的抽水蓄能和新能源电站开发提供了重要参考。

关键词：废弃矿井抽水蓄能地下水库能源系统碳中和

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Chemical composition and Pb(II)binding of dissolved organic matter in a hypersaline lake in China

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Journal of Oceanology and Limnology 2022年第1期40卷 113-127页

作者： Keli YANG Yaoling ZHANG Yaping DONG Wu LI Key Laboratory of comprehensive and Highly Effi cient utilization of Salt Lake resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008China Qinghai Technology research and Development center of comprehensive utilization of Salt Lakes resources Xining 810008China Qinghai Provincial Key Laboratory of resources and Chemistry of Salt Lakes Xining 810008China

Dissolved organic matter(DOM)plays a vital role in promoting carbon and nutrient *** is a food source for organisms and controls the migration and transformation of trace metals and other contaminants in aquatic *** contributions of aquatic DOM to the environment and ecology of a system are closely related to its abundance and chemical *** this study,the chemical composition and binding properties of DOM in a hypersaline lake watershed were investigated for the fi rst time using dissolved organic carbon(DOC)analysis,absorption spectroscopy,Fourier transform infrared spectroscopy,pyrolysis-GC-MS(Py-GC-MS),and fl uorescence parallel factor(PARAFAC)analysis combined with Pb(II)titration *** results showed that DOM from the tributaries that fl owed into the lake had a lower DOC content,higher molecular weight,and higher specifi c UV absorbance than the DOM in lake ***-like fl uorophores were mainly found in tributary and lake surface water DOM(LSDOM)and humic-like substances were abundant in lake groundwater DOM(LGDOM).Using this multi-methodological approach,we found that the DOM from the hypersaline lake watershed was mainly from microbial origins,and consisted of aromatics,carbohydrates,and *** results from quantitative analysis showed that DOM from the infl owing tributaries contained more aromatics,lower carbohydrates,and lower aliphatics than DOM in the *** aromatic hydrocarbons and carbohydrates were more abundant in LSDOM than *** results from the Pb(II)titration technique coupled with PARAFAC analysis suggested that PARAFAC-derived components had relatively low condition stability constants(log K_(M)<2).Of the two types of lake DOM,the LGDOM had a higher Pb(II)binding potential than the *** this study we have improved our understanding of how DOM within a hypersaline lake watershed varies in its composition and potential to bind with metals.

关键词： dissolved organic matter hypersaline lake watershed composition parallel factor analysis Pb(II)titration

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基于绿色生态开采的我国西部生态脆弱矿区“煤-水-热”共采范式（英文）

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Engineering 2024年第7期 209-222页

作者：刘晓秀曾一凡武强孟世豪梁季月侯柱平 National Engineering research center of coal Mine Water Hazard Controlling China University of Mining and Technology College of Geoscience and Surveying Engineering China University of Mining and Technology University of Mining and Technology (Beijing) Inner Mongolia research Institute

A substantial reduction in groundwater level,exacerbated by coal mining activities,is intensifying water scarcity in western China’s ecologically fragile coal mining ***’s national strategic goal of achieving a carbon peak and carbon neutrality has made eco-friendly mining that prioritizes the protection and efficient use of water resources *** on the resource characteristics of mine water and heat hazards,an intensive coal–water–thermal collaborative comining paradigm for the duration of the mining process is *** integrated system for the production,supply,and storage of mining companion resources is achieved through technologies such as roof water inrush prevention and control,hydrothermal quality improvement,and deep-injection geological *** active preventive and control system achieved by adjusting the mining technology and a passive system centered on multiobjective drainage and grouting treatment are suggested,in accordance with the original geological characteristics and dynamic process of water *** implementing advanced multi-objective drainage,specifically designed to address the‘‘skylight-type”water inrush mode in the Yulin mining area of Shaanxi Province,a substantial reduction of 50%in water drillings and inflow was achieved,leading to stabilized water conditions that effectively ensure subsequent safe coal *** integrated-energy complementary model that incorporates the clean production concept of heat utilization is also *** findings indicate a potential saving of 8419 t of standard coal by using water and air heat as an alternative heating source for the Xiaojihan coalmine,resulting in an impressive energy conservation of 50.2%and a notable 24.2%reduction in carbon *** ultra-deep sustained water injection of100 m3.h-1in a single well would not rupture the formation or cause water leakage,and 7.87×10～5t of mine water could be effectively stored in the Liujiagou Formation,presenting a viab

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The extraction of potassium from K-feldspar ore by low temperature molten salt method

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Chinese Journal of Chemical Engineering 2018年第4期26卷 845-851页

作者： Zhao Wang Quanyou Zhang Ying Yao Yongzhong Jia Bingjun Xie Key Laboratory of comprehensive and Highly Efficient utilization of Salt Lake resources Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining 810008 China Qinghai Engineering and Technology research center of comprehensive utilization of Salt Lake resources Xining 810008 China University of Chinese Academy of Sciences Beijing 100049 China Mangya Xingyuan Potash Corporation Ltd. Haixi 817500 China

The low temperature molten salt method was used to extract potassium from K-feldspar ore, and some related factors including mass ratio between NaNO_3, NaOH, H_2O and K-feldspar ore, particle size of K-feldspar ore,reaction temperature and time were investigated, respectively. In addition, the optimum condition for this method was determined by a series of condition experiments. What was more, the K-feldspar ore and the leach residue after reaction based on the above optimum condition were analyzed by XRD, SEM and EDS,separately. The results of which indicated that the mechanism of extraction of potassium for this method was according to the ion exchange reaction between sodium ion and potassium ion, and the extraction ratio of potassium had an obvious improvement than that of traditional methods, which could reach up to 96.25%.Therefore, this method can be a feasible solution to extract potassium from K-feldspar ore for its low energy consumption and high efficiency.

关键词： Low temperature molten salt K-feldspar Mechanism Extraction ratio

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Motion characteristics and density separation of fine coal in an inflatable-inclined liquid-solid fluidized bed

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Particuology 2021年第5期19卷 299-307页

作者： Bo Lv Bobing Dong Xiaowei Deng Chaojun Fang College of Chemistry and Chemical Engineering Henan Polytechnic UniversityJiaozuo 454000China Henan Key Laboratory for Green and Efficient Mining&comprehensive utilization of Mineral resources Henan Polytechnic UniversityJiaozuo 454000China Collaborative Innovation center of coal Work Safety and Clean High Efficiency utilization Henan Polytechnic UniversityJiaozuo 454000China

To improve the adaptability of fluidized beds for fine coal separation,a new type of liquid-solid fluidized bed was constructed,i.e.,the inflatable-inclined liquid-solid fluidized bed(IILSFB).A combination of simulation analysis and separation experiments was used to analyze the fluidization characteristics and separation performance of the *** results showed that there was upflow and downflow in the fluidized *** upflow was mainly composed of water flow,followed by light and heavy particles;on the other hand,the downflow was caused by the backflow of heavy particles that settled at the inclined *** addition,the light particles that settled at the inclined section could return to the rising water flow under the action of secondary *** the water velocity,separation time,and secondary gas velocity increased,the comprehensive separation efficiency of fine coal in the fluidized bed improved,while the value decreased as the feed quantity *** also indicated the order of importance for these four factors,i.e.,water velocity,separation time,feed quantity,and secondary gas velocity,on ***,the comprehensive separation efficiency of 0.1-1 mm fine coal varied significantly with various factors,while that of∼0.1 mm and 1-3 mm fine coal was always at a low *** the latter case,the classification process of the size fraction was significantly better than the separation process in the fluidized *** optimal working conditions,an IILSFB was used to separate the fine coal(0.1-1 mm).The yield of clean coal was 37.95% with an ash content of 12.11%,and the possible error was 0.085 g/cm^(3),indicating that the IILSFB had good separation performance for 0.1-1 mm fine coal.

关键词： Inflatable-inclined liquid-solid fluidized bed Fine coal separation Fluidization Separation efficiency Secondary gas velocity Size fraction

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Spatial and Temporal Distribution Characteristics of Solar Energy resources in Tibet

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Energy Engineering 2024年第1期121卷 43-57页

作者： Yanbo Shen Yang Gao Yueming Hu Xin Yao Wenzheng Yu Yubing Zhang Public Meteorological Service center China Meteorological AdministrationBeijing100081China center forWind and Solar Energy resources China Meteorological AdministrationBeijing100081China School of Applied Meteorology Nanjing University of Information Science&TechnologyNanjing210044China School of Geographical Sciences Nanjing University of Information Science&TechnologyNanjing210044China

The Tibet Plateau is one of the regions with the richest solar energy resources in the *** the process of achieving carbon neutrality in China,the development and utilization of solar energy resources in the region will play an important *** this study,the gridded solar resource data with 1km resolution in Tibet were obtained by spatial correction and downscaling of SMARTS *** this basis,the spatial and temporal distribution characteristics of solar energy resources in the region in the past 30 years(1991–2020)are finely evaluated,and the annual global horizontal radiation resource is *** results show that:1)The average annual global horizontal radiation amount in Tibet is 1816 kWh/m^(2).More than 60%of the area belongs to the“Most abundant”(GHI≥1750 kWh/m^(2))area of China’s solar energy resources category A,and nearly 40%belongs to the“Quite abundant”(1400≤GHIresources in Tibet increased gradually from north to south and from east to ***,Central and Eastern Shigatse,Shannan,and Southwestern Ali are the most abundant cities,with a maximum annual radiation level of 2189 kWh/m2.3)In terms of time,the total horizontal radiation in Tibet was the highest in May and the lowest in December.74%of the total area belongs to the“Very stable”(R_(w)≥0.47)area of solar resource stability category A,and 26%belongs to the“stable”(0.36≤R_(w)resources in the region show the characteristics of both strong and *** solar energy resources in the region have shown a fluctuating downward trend over the past 30 years,with an average decline of about 12.86(kWh/m2)per decade.4)In terms of solar radiation resources reaching the earth’s surface,the theoretical total amount of annual horizontal radiation in Tibet is about 240.07 billion tons of standard coal or 222.91 billion kilowatts on average.

关键词： Tibet solar resource spatiotemporal distribution

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Hydrothermal Synthesis of NiCo-layered Double Hydroxide Nanosheets Decorated on Biomass Carbon Skeleton for High Performance Supercapacitor

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Chemical research in Chinese Universities 2021年第3期37卷 772-777页

作者： YANG Fan CHU Jia CHENG Yaping GONG Jiafang WANG Xiaoqin XIONG Shanxin College of Chemistry and Chemical Engineering Xi’an University of Science and TechnologyXi’an710054P.R.China Key Laboratory of coal resources Exploration and comprehensive utilization Ministry of Nature ResourcesXi’an710054P.R.China

A facile hydrothermal strategy is adopted to synthesize the composite of NiCo-layered double hydroxide(NiCo-LDH)with biomass carbon as substrate for supercapacitor *** prepared NiCo@BC was characterized by means of X-ray diffraction(XRD),scanning electronic microscopy(SEM),Fourier transform infrared spectroscopy(FTIR)and Raman spectroscopy,and electrochemical *** SEM images demonstrated that numerous NiCo-LDH nanosheets directly grew on the surface of biomass carbon *** tests indicated that the NiCo@BC electrode exhibited good capacitive behavior with a specific capacitance of 606.4 F/g at the current density of 0.5 A/*** addition,the composite electrode showed excellent cyclic stability of 87.1%even after 1000 *** results manifest that NiCo@BC nanocomposite is a promising candidate for the electrode material for future supercapacitor practical applications.

关键词： NiCo-layered double hydroxide Biomass carbon Hydrothermal Supercapacitor

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