相关实验视频

Updated: Jul 9, 2025

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Published on: February 21, 2017

从矿尾矿中炼重金属:基于静态和动态炼试验的案例研究

Xiaojun Zheng¹, Shiyue Qiu¹, Buchan Zhou¹

¹Cooperative Innovation Center jointly established by the Ministry and the Ministry of Rare Earth Resources Development and Utilization, Ganzhou, 341000, Jiangxi, China; Key Laboratory of Environmental Pollution and Control in Mining and Metallurgy of Jiangxi Province, Ganzhou, 341000, Jiangxi, China; School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, Jiangxi, China.

Environmental pollution (Barking, Essex : 1987)

|December 8, 2023

概括

从矿尾矿中出重金属会给环境带来风险. ,和是优先污染物,估计有大量的流量,指导尾矿管理策略.

科学领域:

环境科学环境科学
地质化学地质化学
采矿工程采矿工程采矿工程

背景情况:

由于重金属 (HM) 的漏,矿尾矿对环境构成重大危害.
了解HM污染水平和泄漏行为对于有效的环境风险管理至关重要.

研究的目的:

为了评估 tungsten 尾矿中的重金属污染.
为了确定重金属的漏模式和机制.
为了估计从尾矿储库中的重金属流量.

主要方法:

综合污染指数 (CRSi) 计算用于HM评估.
顺序提取以确定HM物种分数 (Res,Exc,Wat).
一般酸中和能力 (GANC) 试验和柱子漏试验,以分析漏机制.
动力建模 (第二阶动态模型) 模拟出水行为.
年度HM流量的估计.

主要成果:

根据CRSi值确定了 (Cd), (W) 和 (Pb) 作为优先污染物.
对于所有HM (>50%),残留 (Res) 分数占主导地位.
显示出高水溶性 (Wat) 分数,而Pb和Cd显示出高可交换 (Exc) 分数.
漏机制因pH而异:中性条件有利于W漏,而酸性条件有利于Cd和Pb漏.
第二级动态模型准确地模拟了W,Pb和Cd的漏.
估计的年流量:W (6.35 × 10^8毫克/年),Pb (1.3288 × 10^9毫克/年),Cd (1.012 × 10^8毫克/年). 估计的年流量:W (6.35 × 10^8毫克/年),Pb (1.3288 × 10^9毫克/年),Cd (1.012 × 10^8毫克/年).

结论:

该研究量化了尾矿的HM污染和漏特征.
调查结果为制定针对性环境管理和对尾矿库的修复策略提供了关键数据.
估计的HM流量对于评估长期环境影响和规划有效干预措施至关重要.

关键词:

酸中和能力酸中和能力柱子的漏,导致柱子的漏.重金属是一种重金属.尾巴的尾巴是什么意思?尾巴是什么意思?钢是什么意思钢是什么意思

更多相关视频

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability

Published on: June 21, 2015

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Published on: December 6, 2015

相关概念视频

Extraction: Advanced Methods

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...

Voltammetry: Stripping Methods

Voltammetry: Stripping Methods

Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...