相关实验视频

Updated: Jul 2, 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

危险矿山尾矿的零碳惰性化过程:矿物质的物理化学特性,转化机制和长期稳定性

Xuquan Huang¹, Zhenghua Sun², Yanhui Zhao³

¹Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, PR China; College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang 443002, PR China.

Journal of hazardous materials

|February 27, 2024

概括

使用废米灰和碳化物渣稳定了危险的矿山尾矿,产生了固定重金属和封存二氧化碳的惰性材料. 这种可持续的零碳方法提供了一个廉价的解决方案,可以减少尾矿的风险并保护环境.

科学领域:

环境工程环境工程
材料科学材料科学材料科学
地质化学地质化学

背景情况:

危险的矿山尾矿 (HMTs) 由于潜在的水故障,造成了重大环境和安全风险.
对HMTs的修复通常是昂贵,复杂和碳密集的.
需要具有成本效益,可持续和低排放的方法来处理和稳定HMTs.

研究的目的:

提出和研究一种廉价,可持续,零碳的HMT的惰性处理方法.
在安全矿物中稳定危险的重金属离子,并同时隔离二氧化碳 (CO2).
评估-尾矿硬化面料 (LZTHP) 的矿物转化机制和长期稳定性.

主要方法:

在特定的比例下,使用废米灰 (RHAs) 和碳化物渣 (CS) 惰性化-尾矿.
用实验性能,分析特性和模拟扩散方法来研究LZTHPs.
分析了矿物质转化机制和离子稳定性.

主要成果:

在LZTHP中,压力强度在1.04-4.73 MPa之间.
对Pb,Zn,Cr和Cd的泄漏毒性度明显低于监管限值.
Pb,Zn,Cr和Cd的固定率分别为86%,78%,76%和65%,二氧化碳矿化能力为0.16公斤/公斤.
低的扩散系数表明有效的长期阴离体稳定,在100年后,模拟的环境影响可以忽略不计.

结论:

拟议的惰性化方法有效地稳定了尾矿中的危险重金属.
该过程为HMTs管理提供了一个可持续的零碳解决方案,利用废物.
这种方法提供了一个有前途的战略,以消除矿山尾矿的风险,实现可持续发展目标.

关键词:

碳二氧化碳 (CO2) 矿化扩散机制的扩散机制危险的矿山尾矿.长期稳定性的长期稳定性矿物转化矿物转化的过程在零碳惰性化过程中,

更多相关视频

An Experimental Protocol for Studying Mineral Effects on Organic Hydrothermal Transformations

An Experimental Protocol for Studying Mineral Effects on Organic Hydrothermal Transformations

Published on: August 8, 2018

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Published on: June 4, 2021

相关概念视频

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...