A cost-effective and high-efficiency online ED-BMED integrated system enables the conversion of 3.5 wt% NaCl aqueous solution into 6.20 mol/L NaOH

Bipolar Membrane Electrodialysis for Direct Conversion of L-Ornithine Monohydrochloride to L-Ornithine

“…Cations in the dilute solution migrate through CEM with a direction from the anode to the cathode under the driving force of direct current, while anions in the dilute solution migrate through AEM with the opposite direction [10]. Currently, ED has been used widely in the fields of salt concentration [11], feed desalination [12,13], ion metathesis reaction [14,15], ion substitution [16,17], acid and base production [18][19][20][21][22], etc. For instance, as for the separation of basic amino acid, Kattan Readi et al [23] reported that 1,5 pentanediamine (PDA) can be separated from L-arginine (Arg) by ED at a pH of 10 (PDA +1.5 /Arg ± ) with a high recovery ratio of 63%.…”

“…This is because the lower the value of the sum of H + ions leakage and OH − ions migration through AEM, the higher the current efficiency is. As for the energy consumption, in general, the higher the voltage drop or current density, the higher the energy consumption is [18]. Therefore, the energy consumption in the case of 10 V is as high as 0.41 kWh/kg.…”

Techno-Economic Analysis of Bipolar Membranes Electrodialysis for the Hexacyanocobalic Acid Green Conversion

“…Under the action of an electric field, water molecules in the intermediate interface layer are dissociated, and the protons (H + ) and hydroxide ions (OH – ) enter the solution on both sides . In the absence of introducing extra chemicals, the salts in the solution are converted into their corresponding acids and bases. , Currently, BMED is widely applied in desalination, acid/base making in chemical production activities, and wastewater recovery. − It has injected new vitality and vitality into the solution of technical problems in environmental, chemical, biological, and marine chemical fields. , Hence, BMED is recognized as a mature technology (TRL 9) with important industrial applications and environmental benefits. − …”