Developing Technology Necessary to Produce Domestic Vanadium Resources

Jeon, Ho-Seok; Baek, Seung‐Mook; Han, Yosep; Go, Byung-Hun; Jeong, Dohyun; Kim, Seong–Min

doi:10.32390/ksmer.2021.58.1.066

Cited by 6 publications

(2 citation statements)

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“…However, most of the world's reserves are stored in three countries, China, Russia, and South Africa, and more than 90% of the world's production is concentrated in these countries. In Korea, the possibility of the existence of vanadium deposits is suggested in the Geumsan area located in the central part and the Pocheon area located in the northern part of the country (Lee et al 1997; Kim et al 1994), and high-e ciency bene ciation and eco-friendly smelting technologies are being developed to secure stable vanadium raw materials (Jeon et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Establishment of geochemical thresholds for vanadium throughout Korea and at potential development sites using geochemical map data

Ahn

Youm

Cho

et al. 2022

Environ Geochem Health

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Geochemical maps can be used for a variety of purposes, one of which is to establish regional or local geochemical thresholds for the analyzed elements. In the case of vanadium, as industrial demand and use increases, it is necessary to expand the development of vanadium in Korea. However, the environmental management standards are insu cient. Therefore, in this study, using geochemical data, we derived geochemical threshold values for the entire country and areas with potential for the development of vanadium deposits. The regional (country-wide) threshold value was derived using logarithmic transformation of raw data (N = 23,548) of the rst-and second-order stream sediments collected across the country in the late 1990s and the early 2000s. The median + 2 median absolute deviation (MAD) and Tukey inner fence (TIF) values were 116 mg/kg and 200 mg/kg, respectively. Of these, the TIF standard, which showed 0.6% of data exceeding the threshold, was judged to be appropriate for distinguishing clear enrichment or contamination of vanadium. In the case of the Geumsan and Pocheon, areas with potential for vanadium development, the TIF and median + 2 MAD values of 259 mg/kg and 218 mg/kg, respectively, can be used as the criteria for evaluating the impact of environmental pollution before and after deposit development. Likewise, by deriving threshold values of the target elements using geochemical map data, it is possible to provide basic environmental information for geochemical evaluation and follow-up management in advance during large-scale site development.

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Section: Introductionmentioning

confidence: 99%

Establishment of geochemical thresholds for vanadium throughout Korea and at potential development sites using geochemical map data

Ahn

Youm

Cho

et al. 2022

Environ Geochem Health

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“…Among various heavy metals, vanadium (V) is directly used in reallife applications as catalysts in the steel and semiconductor industries [6], and vanadiumbased batteries are considered a promising energy storage device [7][8][9][10]. Vanadium ore is mined only in a few countries, including China, the United States, and South Africa, therefore it is an industrially valuable commodity [11]. However, vanadium is often discarded in various industrial wastewaters [12,13], even though its different forms have been acknowledged to be toxic [6].…”

Section: Introductionmentioning

confidence: 99%

Microalgae as an Effective Recovery Agent for Vanadium in Aquatic Environment

Kim

Park

et al. 2022

Energies

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Given that vanadium is a valuable material, the implementation of vanadium recycling processes is thus necessary to enhance the element’s value chain as well as minimize its undesirable environmental consequences. Among various remediation methods available, a biological method based on microalgal adsorption is known to be eco-friendly and calls for further investigations. Herein, we evaluated V2O5 adsorption efficiencies of four different microalgal strains: Nannochloropsis oculata, Heterocapsa circularisquama, Chattonella marina, and Chattonella antiqua. Inductively coupled plasma mass spectrometry (ICP-MS) data indicated that vanadium concentration in the culture medium of Nannochloropsis oculata was reduced from 4.61 ± 0.11 mg L−1 to 1.85 ± 0.21 mg L−1 after being exposed to V2O5 solution for 24 h, whereas the supernatants of the other three strains displayed no change in vanadium ion concentration. Therefore, our results indicated a strong potential of Nannochloropsis oculata for recycling vanadium with approximately 59.9% of vanadium ion removal efficiency. Furthermore, morphological observation of Nannochloropsis oculata using scanning electron microscopy (SEM) indicated that the cells were able to maintain their intact morphology even under the presence of high concentrations of heavy metals. Due to the high adsorption efficiency and robustness of Nannochloropsis oculata, the results collectively support it as a potential strain for V2O5 recovery.

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