The application of an enhanced salinity-gradient solar pond with nucleation matrix in lithium extraction from Zabuye salt lake in Tibet

Wu, Qian; Yu, Jiangjiang; Bu, Lingzhong; Nie, Zhen; Wang, Yunsheng; Renchen, Norbu; He, Tao; Zhang, Ke; Zhang, Jintao; He, Zhikui

doi:10.1016/j.solener.2022.08.031

Cited by 17 publications

(4 citation statements)

References 16 publications

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“…The higher heat absorption rate by trapezoidal pond compared to rectangular pond is also reported by Meneses-Brassea et al [4]. Besides higher heat absorption rate, trapezoidal pond is found to be less sensitive to changes in the atmospheric conditions according to Wu et al [5]. In case of trapezoidal cross section, the geometrical parameters are found to be playing significant role in determining the thermal performance of pond.…”

Section: Introductionmentioning

confidence: 61%

Temperature and salt concentration behavior of a compact rectangular salinity gradient solar pond

Jegadheeswaran,

Veeramanıkandan

et al. 2024

Journal of Thermal Engineering

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Design of economical and effective solar ponds which are useful thermal energy storage devices, remains a huge challenge. The present work aims at investigating the thermal performance of low cost mini salt gradient solar pond. The portable pond was fabricated as a rectangular configuration having a volume of 0.5m3. Polystyrene and high density polyethylene sheets were employed for insulating the walls. The top of the pond was covered with a slender glass so that the dust accumulation could be prevented without affecting the absorption of solar radiation. Sodium chloride salt was used as the medium and the three salt gradient regions namely lower convective, non-convective, and upper convective regions were established through injection filling technique. The temperature and salt gradient data were observed experimentally for a period of 20 days at Coimbatore, India. The pond could absorb significant amount of available radiation (around 65%) and the maximum temperature of the pond was observed to be 49oC. Frequent washing of the water surface is necessary to maintain stable salt gradient. Nevertheless, portable pond fabricated with low cost materials exhibited good potential of storing solar energy for solar thermal applications.

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Section: Introductionmentioning

confidence: 61%

Temperature and salt concentration behavior of a compact rectangular salinity gradient solar pond

Jegadheeswaran,

Veeramanıkandan

et al. 2024

Journal of Thermal Engineering

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“…Carbonate‐type salt lakes are often not only abundant in lithium resources but also accompanied with fewer impurity ions, typically such as the Zabuye Salt Lake in Tibet, China, 14,18 where lithium resources are industrially extracted mainly through conventional salinity‐gradient solar pond method 19,20 . The lithium‐rich brine obtained by evaporation in the salt field is pumped into the solar pond, and fresh water is injected at the top, whereby a salt gradient layer is formed between the fresh water layer and the brine layer at the bottom to block the heat emitted, and solar heat is preserved in the bottom to make lithium carbonate precipitated under high temperature 21 . However, this process is limited by climatic conditions, and has the disadvantages of long production cycle and high lithium loss.…”

Section: Introductionmentioning

confidence: 99%

“…19,20 The lithium-rich brine obtained by evaporation in the salt field is pumped into the solar pond, and fresh water is injected at the top, whereby a salt gradient layer is formed between the fresh water layer and the brine layer at the bottom to block the heat emitted, and solar heat is preserved in the bottom to make lithium carbonate precipitated under high temperature. 21 However, this process is limited by climatic conditions, and has the disadvantages of long production cycle and high lithium loss. While the raw brine adsorption and membrane separation coupling process can greatly shorten the extraction cycle and improve industrial efficiency, based on the process of lithium production lines have been stable operation in several salt lakes.…”

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confidence: 99%

Adsorption weakening mechanism and regulation strategy of aluminum‐based lithium adsorbents in carbonate‐style brines

Chen,

Jin,

et al. 2024

AIChE Journal

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An efficient adsorption‐strengthening regulation was developed for aluminum‐based lithium adsorbents (Li/Al‐LDHs) in carbonate‐type salt lakes based on reasons for adsorption performance degradation. It was confirmed by adsorption–desorption experiments and density functional theory (DFT) that CO32− in brines preferentially entered Li/Al‐LDH interlayers with a tighter binding energy to the laminates, resulting in the decreasing sharply cyclic re‐adsorption capacity. Intercalated CO32− was effectively removed by high concentration of Cl− to enhance Li+ re‐adsorption, and X‐ray absorption spectroscopy (XAS) demonstrated that this process had no impact on the host laminate integrity. On this basis, an innovative strategy of incorporating interlayer anion regulation into lithium extraction process was proposed and employed for the continuous extraction of Li+ from carbonate‐type brines, bringing about a completely restored re‐adsorption capacity with cyclic stability, and the lithium extraction capacity per unit time could be exceeded by about double compared with the conventional process, assuring the efficiency of lithium extraction from carbonate‐type brines by Li/Al‐LDHs.

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“…In recent years, the lithium extraction process and potassium enrichment process of solar ponds have been applied in western China [11][12] . The application of solar ponds can solve the problems of long production cycles, low brine temperature, and salt algae in these two processes.…”

Section: Introductionmentioning

confidence: 99%

The effect of porous media on the thermal storage performance of salinity-gradient solar pond

Shao,

Wu,

Liang

et al. 2023

J. Phys.: Conf. Ser.

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A solar pond is a system that uses a salt concentration gradient to store heat. The application of the system is conducive to solving the problems of long production cycles, low brine temperature, and salt algae in the solar pond lithium extraction process and the solar pond potassium enrichment process. Based on this, our research group laid porous media at the bottom of the solar pond and utilized the heat storage and adsorption capacity of porous media to improve the thermal storage performance of the solar pond. The experimental results show that foam ceramics have good thermal storage performance and the ability to reduce turbidity. Laying foam ceramics on the bottom of the solar pond can not only increase the thermal storage performance of LCZ but also help reduce the turbidity of the pool water. After adding porous media, the heat extraction position of the solar pool moves from the junction of LCZ and NCZ to the bottom of LCZ. In addition, adding transparent film on the upper surface of the solar pond is also conducive to improving the thermal storage performance of the solar pond and reducing the turbidity of the solar pond.

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The application of an enhanced salinity-gradient solar pond with nucleation matrix in lithium extraction from Zabuye salt lake in Tibet

Cited by 17 publications

References 16 publications

Temperature and salt concentration behavior of a compact rectangular salinity gradient solar pond

Temperature and salt concentration behavior of a compact rectangular salinity gradient solar pond

Adsorption weakening mechanism and regulation strategy of aluminum‐based lithium adsorbents in carbonate‐style brines

The effect of porous media on the thermal storage performance of salinity-gradient solar pond

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