A sustainable valorization of neopentyl glycol salt waste containing sodium formate via bipolar membrane electrodialysis

Wei, Xiangfeng; Wang, Yaoming; Yan, Haiyang; Jiang, Chenxiao; Xu, Tongwen

doi:10.1016/j.seppur.2020.117563

Cited by 38 publications

(27 citation statements)

References 35 publications

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“…In the operation of BMED, current density is one of the most important factors that determine current efficiency, energy consumption, capital cost, and other operation performance indicators [ 21 ]. Current density in the range of 10 to 50 mA·cm −2 , commonly used in BMED processes, was selected in this experiment.…”

Section: Resultsmentioning

confidence: 99%

“…BMED technology is based on traditional electrodialysis, in which H 2 O splits into H + and OH − in the interfacial layer of the bipolar membrane [ 19 , 20 ]. BMED can simultaneously achieve high-salinity wastewater desalination and acid and alkali production without introducing other components [ 21 , 22 ]. The produced acid and alkali can be directly or indirectly reused in industrial applications, enhancing the value of high-salinity wastewater.…”

Section: Introductionmentioning

confidence: 99%

“…BMED has been researched in waste salt treatment and acid–base reuse in the production processes of neopentyl glycol, ore mining, and phenyl glycine. [ 21 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

“…Membranes 2021, 11, x FOR PEER REVIEW 3 of 15 [21,22]. The produced acid and alkali can be directly or indirectly reused in industrial applications, enhancing the value of high-salinity wastewater.…”

Section: Introductionmentioning

confidence: 99%

“…BMED has been researched in waste salt treatment and acid-base reuse in the production processes of neopentyl glycol, ore mining, and phenyl glycine. [21,23,24]. In order to solve the problem of the sodium sulfate waste salt produced in the lithium carbonate production process, BMED technology was introduced into the above process to recycle the waste salts, as shown in Figure 1; the waste salt (sodium sulfate) can be converted into sodium hydroxide and sulfuric acid, and both products can be used as raw materials in the upstream process.…”

Section: Introductionmentioning

confidence: 99%

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Recovery of Acid and Base from Sodium Sulfate Containing Lithium Carbonate Using Bipolar Membrane Electrodialysis

et al. 2021

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Lithium carbonate is an important chemical raw material that is widely used in many contexts. The preparation of lithium carbonate by acid roasting is limited due to the large amounts of low-value sodium sulfate waste salts that result. In this research, bipolar membrane electrodialysis (BMED) technology was developed to treat waste sodium sulfate containing lithium carbonate for conversion of low-value sodium sulfate into high-value sulfuric acid and sodium hydroxide. Both can be used as raw materials in upstream processes. In order to verify the feasibility of the method, the effects of the feed salt concentration, current density, flow rate, and volume ratio on the desalination performance were determined. The conversion rate of sodium sulfate was close to 100%. The energy consumption obtained under the best experimental conditions was 1.4 kWh·kg−1. The purity of the obtained sulfuric acid and sodium hydroxide products reached 98.32% and 98.23%, respectively. Calculated under the best process conditions, the total process cost of BMED was estimated to be USD 0.705 kg−1 Na2SO4, which is considered low and provides an indication of the potential economic and environmental benefits of using applying this technology.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…BMED has been researched in waste salt treatment and acid–base reuse in the production processes of neopentyl glycol, ore mining, and phenyl glycine. [ 21 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recovery of Acid and Base from Sodium Sulfate Containing Lithium Carbonate Using Bipolar Membrane Electrodialysis

et al. 2021

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Electrodialysis as a potential technology for 4-nitrophenol abatement from wastewater

Lopez,

Cornaglia,

Gutierrez

et al. 2023

Environ Sci Pollut Res

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4-Nitrophenol is a widely used emerging pollutant in various industries, including the production of agrochemicals, drugs, and synthetic dyes. Due to its potential environmental harmful effects, there is a need to study its reuse and removal from wastewater. In this study, electrodialysis technology was used to separate 4-Nitrophenol ions using a four-compartment stack. The effects of supporting electrolyte concentration, pH, voltages, and current density on the performance of electrodialysis for separating 4nitrophenol were investigated. A high extraction percentage of 77% was achieved with low energy consumption (107 kwh kg -1 ) when high 4-nitrophenol flows and transport numbers were reached.

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The green resource recovery process of a new type of selective bipolar membrane electrodialysis system for saline wastewater treatment

Zhang,

Zhao,

Cheng

et al. 2024

Chemical Engineering Journal

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A sustainable valorization of neopentyl glycol salt waste containing sodium formate via bipolar membrane electrodialysis

Cited by 38 publications

References 35 publications

Recovery of Acid and Base from Sodium Sulfate Containing Lithium Carbonate Using Bipolar Membrane Electrodialysis

Recovery of Acid and Base from Sodium Sulfate Containing Lithium Carbonate Using Bipolar Membrane Electrodialysis

Electrodialysis as a potential technology for 4-nitrophenol abatement from wastewater

The green resource recovery process of a new type of selective bipolar membrane electrodialysis system for saline wastewater treatment

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