车辆运输是露天矿生产中的关键环节.传统的露天矿山车辆管控通常采用人工巡逻、对讲机通信以及固定摄像头监控等方式,存在实时性差、人工管理困难、行驶轨迹无法追溯等问题,难以满足当前矿山智慧化管理的要求.随着三维地理信息系统(Geog...车辆运输是露天矿生产中的关键环节.传统的露天矿山车辆管控通常采用人工巡逻、对讲机通信以及固定摄像头监控等方式,存在实时性差、人工管理困难、行驶轨迹无法追溯等问题,难以满足当前矿山智慧化管理的要求.随着三维地理信息系统(Geographic Information System, GIS)与可视化技术的发展,将露天矿山与3DGIS结合能更好地展示矿山地貌结构等空间环境因素.文章基于三维可视化开源框架Cesium构建露天矿山车辆管控系统,对矿区进行三维实景建模,并将矿车的实时位置、状态及运动轨迹等信息直观地呈现在三维地图上,使矿区运营人员更好地跟踪和调度车辆,提高生产作业效率.展开更多
The removal of cesium-137(^(137)Cs)from nuclear wastewater remains crucial due to its radioactivity and high solubility in water,which pose serious risk to human health and the environment.Aiming at selective capture ...The removal of cesium-137(^(137)Cs)from nuclear wastewater remains crucial due to its radioactivity and high solubility in water,which pose serious risk to human health and the environment.Aiming at selective capture of Cs^(+) from wastewater,a core-shell adsorbent,Prussian blue analog@y-alumina(PBA@Al_(2)O_(3))pellets were synthesized using the hydrothermal-stepwise deposition method.The coreshell PBA@Al_(2)O_(3)pellets showcased a PBA loading of 25%and demonstrated a maximum adsorption capacity of 15.65 mg·g^(-1).The adsorption data was consistent with the pseudo-second-order kinetic model and the Langmuir isotherm model.It effectively reduced bulk Cs^(+) concentrations from an initial 6.62 mg·L^(-1)to 2 μg·L^(-1),achieving a removal efficiency of 99.97%and distribution coefficient(Kd)of 1.265×10^(6)ml·g^(-1),surpassing the performance of other PBA-based materials.The material also indicated good mechanical properties and cesium ion removal rates of 99.7%across a wide pH range(1.82 to 11.12).Furthermore,PBA@Al_(2)O_(3)exhibited consistent removal rate of over 99%and good selectivity(SF=50-1600)towards Cs^(+) even in the presence of interfering ions such as Na^(+),K^(+),Mg^(2+),and Ca^(2+)ions.The Kd(Cs^(+))for PBA@Al2O3 in simulated seawater and groundwater were 9.92×10^(3)and 2.23×10^(4)ml·g^(-1),where the removal rates reached 96.1%and 98.2%,respectively.XPS confirms that the adsorption mechanism is the ion exchange between Cs^(+) and K^(+)ions.This study underscores the significant potential of inorganic core-shell pellets adsorbents as promising agents for the selective capture of Cs^(+) from wastewater.展开更多
0 INTRODUCTION The Yichun Li-Cs-Ta deposit in SE China has received significant attention for several decades,and it represents one of the most typical granitic examples that resemble typical LCT-type mineralization i...0 INTRODUCTION The Yichun Li-Cs-Ta deposit in SE China has received significant attention for several decades,and it represents one of the most typical granitic examples that resemble typical LCT-type mineralization in peraluminous pegmatites.展开更多
文摘车辆运输是露天矿生产中的关键环节.传统的露天矿山车辆管控通常采用人工巡逻、对讲机通信以及固定摄像头监控等方式,存在实时性差、人工管理困难、行驶轨迹无法追溯等问题,难以满足当前矿山智慧化管理的要求.随着三维地理信息系统(Geographic Information System, GIS)与可视化技术的发展,将露天矿山与3DGIS结合能更好地展示矿山地貌结构等空间环境因素.文章基于三维可视化开源框架Cesium构建露天矿山车辆管控系统,对矿区进行三维实景建模,并将矿车的实时位置、状态及运动轨迹等信息直观地呈现在三维地图上,使矿区运营人员更好地跟踪和调度车辆,提高生产作业效率.
基金supported by the Key Reasearch and Development Program of Zhejiang(2022C01029)the National Natural Science Foundation of China(22225802 and 22288102)the Research Funds of Institute of Zhejiang University-Quzhou(IZQ2022KJ3005).
文摘The removal of cesium-137(^(137)Cs)from nuclear wastewater remains crucial due to its radioactivity and high solubility in water,which pose serious risk to human health and the environment.Aiming at selective capture of Cs^(+) from wastewater,a core-shell adsorbent,Prussian blue analog@y-alumina(PBA@Al_(2)O_(3))pellets were synthesized using the hydrothermal-stepwise deposition method.The coreshell PBA@Al_(2)O_(3)pellets showcased a PBA loading of 25%and demonstrated a maximum adsorption capacity of 15.65 mg·g^(-1).The adsorption data was consistent with the pseudo-second-order kinetic model and the Langmuir isotherm model.It effectively reduced bulk Cs^(+) concentrations from an initial 6.62 mg·L^(-1)to 2 μg·L^(-1),achieving a removal efficiency of 99.97%and distribution coefficient(Kd)of 1.265×10^(6)ml·g^(-1),surpassing the performance of other PBA-based materials.The material also indicated good mechanical properties and cesium ion removal rates of 99.7%across a wide pH range(1.82 to 11.12).Furthermore,PBA@Al_(2)O_(3)exhibited consistent removal rate of over 99%and good selectivity(SF=50-1600)towards Cs^(+) even in the presence of interfering ions such as Na^(+),K^(+),Mg^(2+),and Ca^(2+)ions.The Kd(Cs^(+))for PBA@Al2O3 in simulated seawater and groundwater were 9.92×10^(3)and 2.23×10^(4)ml·g^(-1),where the removal rates reached 96.1%and 98.2%,respectively.XPS confirms that the adsorption mechanism is the ion exchange between Cs^(+) and K^(+)ions.This study underscores the significant potential of inorganic core-shell pellets adsorbents as promising agents for the selective capture of Cs^(+) from wastewater.
基金funded by the National Natural Science Foundation of China(Nos.42403065 and 92462302)the Frontiers Science Center for Deep-time Digital Earth(No.2652023001)the Open Research Project from the State Key Laboratory of Critical Earth Material Cycling and Mineral Deposits,Nanjing University(No.2025-K16).
文摘0 INTRODUCTION The Yichun Li-Cs-Ta deposit in SE China has received significant attention for several decades,and it represents one of the most typical granitic examples that resemble typical LCT-type mineralization in peraluminous pegmatites.
