Thermodynamic modeling of HCl-H2O binary system with symmetric electrolyte NRTL model

Saravi, Sina Hassanjani; Honarparvar, Soraya; Chen, Chau‐Chyun

doi:10.1016/j.jct.2018.05.024

Cited by 14 publications

(5 citation statements)

References 63 publications

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“…The binary parameters for the H 2 O + LA + MIBK system were regressed from experimental data , and the liquid–liquid equilibrium (LLE) model was validated based on the Purac Biochem patent data . The HCl absorption process was also modeled using ELECNRTL with binary parameters from Ref . The extraction columns were sized as tray columns, while absorption and distillation columns were sized in Aspen Plus using the Radfrac model.…”

Section: Methodsmentioning

confidence: 99%

Techno-Economic Analysis of Alternative Designs for Low-pH Lactic Acid Production

Marchesan

Silva

Filho

et al. 2021

ACS Sustainable Chem. Eng.

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Lactic acid production is highly affected by the fermentation pH. The need for neutralizing agents and the salts produced during fermentation have a significant impact on the overall process performance. Changing the neutralizing agent and allowing lower pH fermentation can improve the process profitability. This work investigates the impact of fermentation parameters and evaluates the process economics of alternative downstream processing designs to produce lactic acid. The results show that low-pH fermentation (pH = 3.86) was profitable (internal rate of return, IRR > 10%) at a fermentation yield of 0.97 g/g sucrose. Decomposing the salt subproduct to reduce the environmental burden associated with gypsum disposal has a significant impact on the economic performance, resulting in a lower IRR than the other designs. Although the salt decomposition process has a high energy demand, it is compensated by the savings obtained in the downstream processing, thus resulting in a similar overall energy demand when compared to conventional reactive distillation. A novel process configuration with ammonium sulfate subproduct shows potential for 3 p.p. higher IRR and up to 30% lower fuel demand in comparison with the conventional process. Therefore, alternative downstream processes could drive low-pH fermentation to outperform the conventional process without any neutralizing agent.

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Section: Methodsmentioning

confidence: 99%

Techno-Economic Analysis of Alternative Designs for Low-pH Lactic Acid Production

Marchesan

Silva

Filho

et al. 2021

ACS Sustainable Chem. Eng.

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“…As described in a recent assessment of the thermodynamic properties of the HCl-H 2 O system on the whole composition range (Saravi et al, 2018), the addition of HCl to water, up to about 50 wt%, forms a oneliquid system with H 2 O, H 3 O + and Clas dominant species. At higher HCl concentrations, the content of molecular HCl (aq) increases, which eventually forms a non-miscible phase when concentration reaches 60 to 70 wt% depending on temperature.…”

Section: Thermodynamic Description Of the Hcl-h 2 O Systemmentioning

confidence: 94%

“…1, as a function of the amount of HCl added to 1 kg of water up to 600 g of HCl (37.5 wt% of HCl), at a total pressure of 1, 3 and 5 bar. The equilibrium curves were calculated using the OLI software and the AQ database (see next section for further details), and validated with the data compiled in the recent article of Saravi et al (Saravi et al, 2018). As illustrated in Fig.…”

Section: Composition Of the Systemmentioning

confidence: 99%

Thermo-kinetic modelling of the acidic leaching of anorthosite: Key learnings toward the conception of a sustainable industrial process

Neron

Cassayre

Zhuo

et al. 2022

Minerals Engineering

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“…80%) of V(+5) solutions in the presence of chloride was explained on the basis of activity coefficients. 236 Nevetheless, because of a high vapor pressure of HCl solutions, 237 such mixed electrolytes have not been widely adopted by the VRFB industry. 238 The third major improvement was the switch in VRFBs and other flow batteries from multi-micron to submicron diameter fibers in the porous electrodes.…”

Section: Vanadium Rfbs-the Technology Frontrunnersmentioning

confidence: 99%

Review—Flow Batteries from 1879 to 2022 and Beyond

Tolmachev

2023

J. Electrochem. Soc.

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We present a quantitative bibliometric study of flow battery technology from the first zinc-bromine cells in the 1870s to megawatt vanadium redox flow battery (RFB) installations in the 2020s. We emphasize that the cost advantage of RFBs in multi-hour charge-discharge cycles is compromised by the inferior energy efficiency of these systems, and that there are limits on the efficiency improvement due to internal cross-over and the cost of power (at low current densities) and due to acceptable pressure drop (at high current densities). Differences between lithium-ion and vanadium redox flow batteries are discussed from the end-user perspective.

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Thermodynamic modeling of HCl-H2O binary system with symmetric electrolyte NRTL model

Cited by 14 publications

References 63 publications

Techno-Economic Analysis of Alternative Designs for Low-pH Lactic Acid Production

Techno-Economic Analysis of Alternative Designs for Low-pH Lactic Acid Production

Thermo-kinetic modelling of the acidic leaching of anorthosite: Key learnings toward the conception of a sustainable industrial process

Review—Flow Batteries from 1879 to 2022 and Beyond

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