Multi-step column leaching using low-molecular-weight organic acids for remediating vanadium- and chromium-contaminated soil

Zou, Quan; Gao, Yuchen; Yi, Sangho; Jiang, Jianguo; Aihemaiti, Aikelaimu; Li, De’an; Meng, Yonggang

doi:10.1007/s11356-019-04915-7

Cited by 22 publications

(1 citation statement)

References 55 publications

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“…This presents a new strategy for the targeted separation of these elements. Zou 5 developed a multistep column percolation method, employing a 1.0 M oxalic acid solution to leach contaminated soil containing vanadium and chromium three times, with a solution-to-soil ratio of 0.3 mL/g. This approach resulted in 77.2% vanadium and 7.2% chromium removal rates.…”

Section: Introductionmentioning

confidence: 99%

Removal of V(V) from a Mixed Solution Containing Vanadium and Chromium Using a Micropocrous Resin in a Column: Migration Regularity of the Mass Transfer Zone and Analysis of Dynamic Properties

Li,

You,

et al. 2024

ACS Omega

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In China, both vanadium(V) and chromium(VI) are present in wastewater resulting from vanadate precipitation (AVP wastewater) and from leaching vanadium–chromium reduction slag. Addressing environmental preservation and the comprehensive utilization of metal resources necessitates the extraction and separation of V(V) and Cr(VI) from these mixed solutions. However, their separation is complicated by very similar physicochemical properties. This study establishes a method for the dynamic selective adsorption of V(V) from such mixtures. It evaluates the impact of various operating conditions in columns on dynamic adsorption behavior. This study examines the migration patterns of the mass transfer zone (MTZ) and forecasts its effective adsorption capacity through multivariate polynomial regression and a neural network (NN) model. The NN model’s outcomes are notably more precise. Its analysis reveals that C 0 is the most critical factor, with Q and H following in importance. Furthermore, the dynamic properties were analyzed using two established models, Thomas and Klinkenberg, revealing that both intraparticle and liquid film diffusion influence the rates of exchange adsorption, with intraparticle diffusion being the more significant factor. Using 3 wt % sodium hydroxide as the eluent to elute V(V)-loaded resin at a flow rate of 4 mL/min resulted in a chromium concentration of less than 3 mg/L in the V(V) eluate, indicating high vanadium–chromium separation efficiency in this method. These findings offer theoretical insights and economic analysis data that are crucial for optimizing column operation processes.

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Section: Introductionmentioning

confidence: 99%

Removal of V(V) from a Mixed Solution Containing Vanadium and Chromium Using a Micropocrous Resin in a Column: Migration Regularity of the Mass Transfer Zone and Analysis of Dynamic Properties

Li,

You,

et al. 2024

ACS Omega

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Will Vanadium‐Based Electrode Materials Become the Future Choice for Metal‐Ion Batteries?

et al. 2022

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Metal-ion batteries have emerged as promising candidates for energy storage system due to their unlimited resources and competitive price/performance ratio. Vanadium-based compounds have diverse oxidation states rendering various openframeworks for ions storage. To date, some vanadium-based polyanionic compounds have shown great potential as highperformance electrode materials. However, there has been a growing concern regarding the cost and environmental risk of vanadium. In this Review, all links in the industry chain of vanadium-based electrodes were comprehensively summarized, starting with an analysis of the resources, applications, and price fluctuation of vanadium. The manufacturing processes of the vanadium extraction and recovery technologies were discussed. Moreover, the commercial potentials of some typical electrode materials were critically appraised. Finally, the environmental impact and sustainability of the industry chain were evaluated. This critical Review will provide a clear vision of the prospects and challenges of developing vanadium-based electrode materials.

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Remediation of PTEs Contaminated Soils by Washing Treatment with Biodegradable Reagents

Race,

Ferraro,

Spasiano

et al. 2024

Frontier Studies in Soil Science

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Multi-step column leaching using low-molecular-weight organic acids for remediating vanadium- and chromium-contaminated soil

Cited by 22 publications

References 55 publications

Removal of V(V) from a Mixed Solution Containing Vanadium and Chromium Using a Micropocrous Resin in a Column: Migration Regularity of the Mass Transfer Zone and Analysis of Dynamic Properties

Removal of V(V) from a Mixed Solution Containing Vanadium and Chromium Using a Micropocrous Resin in a Column: Migration Regularity of the Mass Transfer Zone and Analysis of Dynamic Properties

Will Vanadium‐Based Electrode Materials Become the Future Choice for Metal‐Ion Batteries?

Remediation of PTEs Contaminated Soils by Washing Treatment with Biodegradable Reagents

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