Effect of acid-base solutions used in acid-base compartments for simultaneous recovery of lithium and boron from aqueous solution using bipolar membrane electrodialysis (BMED)

İpekçi, Deniz; Altıok, Esra; Bunani, Samuel; Yoshizuka, Kazuharu; Nishihama, Syouhei; Arda, Müşerref; Kabay, Nalan

doi:10.1016/j.desal.2018.10.001

Cited by 61 publications

(24 citation statements)

References 19 publications

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“…These can be observed in Figure 3. This can be attributed to the variation of voltage and current conformed to Ohm's law; that is, the larger the current, the higher the voltage, and there will be a relatively constant stack resistance [16,17]. When a higher current was applied, the water dissociation in the interface layer of the bipolar membrane and the transfer of various ions in the feed solution would be accelerated to the production of a large amount of sulfuric acid and mixed base solutions, forming the low resistance of the stack.…”

Section: Effects Of Current Densitymentioning

confidence: 99%

The Novel Strategy for Increasing the Efficiency and Yield of the Bipolar Membrane Electrodialysis by the Double Conjugate Salts Stress

et al. 2020

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To improve sulfuric acid recovery from sodium sulfate wastewater, a lab-scale bipolar membrane electrodialysis (BMED) process was used for the treatment of simulated sodium sulfate wastewater. In order to increase the concentration of sulfuric acid (H2SO4) generated during the process, a certain concentration of ammonium sulfate solution was added into the feed compartment. To study the influencing factors of sulfuric acid yield, we prepared different concentrations of ammonium sulfate solution, different feed solution volumes, and different membrane configurations in this experiment. As it can be seen from the results, when adding 8% (NH4)2SO4 into 15% Na2SO4 under the experimental conditions where the current density was 50 mA/cm2, the concentration of H2SO4 increased from 0.89 to 1.215 mol/L, and the current efficiency and energy consumption could be up to 60.12% and 2.59 kWh/kg, respectively. Furthermore, with the increase of the volume of the feed compartment, the concentration of H2SO4 also increased. At the same time, the configuration also affects the final concentration of the sulfuric acid; in the BP-A-C-BP (“BP” means bipolar membrane, “A” means anion exchange membrane, and “C” means cation exchange membrane; “BP-A-C-BP” means that two bipolar membranes, an anion exchange membrane, and a cation exchange membrane are alternately arranged to form a repeating unit of the membrane stack) configuration, a higher H2SO4 concentration was generated and less energy was consumed. The results show that the addition of the double conjugate salt is an effective method to increase the concentration of acid produced in the BMED process.

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Section: Effects Of Current Densitymentioning

confidence: 99%

The Novel Strategy for Increasing the Efficiency and Yield of the Bipolar Membrane Electrodialysis by the Double Conjugate Salts Stress

et al. 2020

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“…It is widely applied in the food, chemical industry and effluent treatment. Fruitful research has been performed using BMED to separate ions from neutral solution and convert them into acid and base [8,25]. Moreover, the production of sodium hydroxide through BMED from reverse osmosis concentrate [9,35], glyphosate neutralization liquor [27,34], brominated butyl rubber wastewater [32] and other industrial wastewater [14,31] have been reported, the results showed that it could be used as a promising and environmentally friendly technique to regeneration sodium hydroxide.…”

Section: Introductionmentioning

confidence: 99%

“…Fig 8. The efficiency (ƞ) and energy consumption (EC) of HCl and LiOH at different initial concentration…”

mentioning

confidence: 99%

Effect of process conditions on generation of hydrochloric acid and lithium hydroxide from simulated lithium chloride solution using bipolar membrane electrodialysis

Tian¹,

Yan²,

et al. 2022

SN Appl. Sci.

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A feasibility study was carried out on generation of hydrochloric acid and lithium hydroxide from the simulated lithium chloride solution using EX3B model bipolar membrane electrodialysis (BMED). The influence of a series of process parameters, such as feed concentration, initial acid and base concentration in device component, feed solution volume, and current density were investigated. In addition, the maximum achievable concentrations of HCl and LiOH, the average current efficiency, and specific energy consumption were also studied and compared in this paper to the existing literature. Higher LiCl concentrations in the feed solution were found to be beneficial in increasing the final concentrations of HCl and LiOH, as well as improving current efficiency while decreasing specific energy consumption. However, when its concentration was less than 4 g/L, the membrane stack voltage curve of BMED increased rapidly, attributed to the higher solution resistance. Also low initial concentration of acid and base employed in device component can improve the current efficiency. Increasing of the initial concentration of acid and base solution lowered energy consumption. Moreover, a high current density could rapidly increase HCl and LiOH concentration and enhance water movements of BMED process, but reduced the current efficiency. The maximum achievable concentration of HCl and LiOH generated from 130 g/L LiCl solution were close to 3.24 mol/L and 3.57 mol/L, respectively. In summary, the present study confirmed the feasible application for the generation of HCl and LiOH from simulated lithium chloride solution with BMED.

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“…The results show that after ED treatment of a Li 2 CO 3 feed solution using a bipolar membrane, the purity of the obtained LiOH can reach 95% [224]. The ED process combined with a bipolar membrane shows a promising ability for lithium recovery from boron-lithium mixed solutions [226][227][228][229]. Similar to the ED process using a monovalent ion exchange membrane, the lithium recovery rate using a bipolar membrane can be remarkably promoted at higher voltage [229].…”

Section: Electrodialysis Technologymentioning

confidence: 91%

Materials for lithium recovery from salt lake brine

et al. 2020

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Rapid developments in the electric industry have promoted an increasing demand for lithium resources. Lithium in salt lake brines has emerged as the main source for industrial lithium extraction, owing to its low cost and extensive reserves. The effective separation of Mg 2? and Li ? is critical to achieving high recovery efficiency and purity of the final lithium product. This paper summarizes Mg 2? /Li ? separation materials and methods in the field of lithium recovery from salt lake brines. The review begins with an introduction to the global distribution and demand for lithium resources, followed by a description of the materials used in various separation techniques, including precipitation, adsorption, solvent extraction, nanofiltration membrane, electrodialysis, and electrochemical methods. A comparison, analysis, and outlook of such methods are comprehensively discussed in terms of principles, mechanisms, synthesis/operation, development, and industrial applications. We conclude with a presentation of challenges and insights into the future directions of lithium extraction from salt lake brines. A combination of the advantages of various materials is the most logical step toward developing novel methods for extracting lithium from brines with high separation selectivity, stability, low cost, and environmentally friendly characteristics.

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Effect of acid-base solutions used in acid-base compartments for simultaneous recovery of lithium and boron from aqueous solution using bipolar membrane electrodialysis (BMED)

Cited by 61 publications

References 19 publications

The Novel Strategy for Increasing the Efficiency and Yield of the Bipolar Membrane Electrodialysis by the Double Conjugate Salts Stress

The Novel Strategy for Increasing the Efficiency and Yield of the Bipolar Membrane Electrodialysis by the Double Conjugate Salts Stress

Effect of process conditions on generation of hydrochloric acid and lithium hydroxide from simulated lithium chloride solution using bipolar membrane electrodialysis

Materials for lithium recovery from salt lake brine

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