In a previous work, the overall performance of modified Solvay process was investigated in absence ammonia, where carbon dioxide and brine treatments were accomplished single reaction presence calcium hydroxide (Ca(OH)2). this study, impact alkaline amphoteric oxides, namely potassium (KOH) aluminum oxide (Al2O3), on pH level, CO2 capture capacity, ions reduction, type produced solids at temperature 20°C gas flow rate 1 L/min. At stoichiometric ratio less than solubility limit, KOH/brine...

The aim of this research is to investigate the reaction kinetics for a modified Solvay process based on KOH. global rate was measured within 3−15% CO2 inlet concentration, 10−50 °C temperature, 30–190 g/L KOH 400–2000 mL/min gas flow rate, and 1–5 bar total applied pressure range, changing one factor at time while keeping values remaining parameters fixed. As part each set experimental runs, temporal changes in ion reduction pH value were also monitored. results revealed that directly...

Previous studies have investigated the overall performance of modified Solvay process based on a new alkaline compound, namely, KOH. Preliminary results confirmed its high reactivity and effectiveness in capturing CO2 managing reject brine. In this study, parametric sensitivity analysis has been carried out to optimize operating conditions thereby maximize capture ions removal from high-salinity brines. Response surface methodology (RSM) using central composite design (CCD) approach was...

The traditional Solvay process and other modifications that are based on different types of alkaline material waste promise to be effective in the reduction reject brine salinity capture CO2. These processes, however, require low temperatures (10–20 °C) increase solubility CO2 enhance precipitation metallic salts, while is usually discharged from desalination plants at relatively high (40–55 °C). A modified potassium hydroxide (KOH) has emerged as a promising technique for simultaneously...

Inert-particles spouted bed reactor (IPSBR) is characterized by intense mixing generated the circular motion of inert particles. The operating parameters play an important role in performance IPSBR system, and therefore, parameter optimization critical for design scale-up this gas–liquid contact system. Computational fluid dynamics (CFD) provides detailed modeling system hydrodynamics, enabling determination conditions that optimize present work optimizes main parameters, which include a...

In this study, we investigate the preliminary effect of bovine carbonic anhydrase (BCA) catalyst on CO2 capture via a reaction with potassium hydroxide (KOH) and reject brine under different operational conditions. Experiments were performed at constant gauge pressure 2 bar, inlet concentration 10% flow rate 776 mL/min. First, impact BCA in absence alkaline material was studied. Results showed that using 3-mg/L increases by 181% compared case without BCA. Second, uptake ions reduction...

Abstract A novel system for contacting gases and liquids, suitable many applications involving gas–liquid contact such as CO 2 capture brine desalination, has been simulated experimentally validated. The comprises a vertical vessel with gas liquid ports inert particles that enhance mixing provide high interfacial area. low flow rate was statistically demonstrated verified to be the optimum condition desalination; however, velocity can have considerable effect on motion of inside reactor....

Effective gas dispersion and liquid mixing are significant parameters in the design of an inert-particle spouted-bed reactor (IPSBR) system. Solid particles can be used to ensure good efficient rate mass heat transfer between liquid. In this study, computational fluid dynamics (CFD) coupled with discrete phase model (DPM) were developed investigate effect feed velocity (0.5–1.5 m/s), orifice diameter (0.001–0.005 m), head (0.15–0.35 particle (0.009–0.0225 mixing-particle-to-reactor-volume...

This study used a computational fluid dynamics simulation of an inert-particle spouted-bed reactor, which consists cylindrical vessel with conical base, to investigate the effect different operational parameters on hydrodynamics process. The reactor was composed three phases, namely, air, water, and mixing particles 0.850 m high 0.078 in diameter. Water continuous phase, whereas air dispersed phase operating turbulent region. All runs were accomplished 2D axisymmetric, unsteady, Eulerian...

Soda ash (Na2CO3) is produced using the traditional Solvay process. It entails reaction of CO2 with high-salinity water in presence ammonia (NH3), which produces insoluble sodium bicarbonate (NaHCO3) and soluble ammonium chloride (NH4Cl). In current work, a newly combined approach has been developed to effectively manage removal sulfate from effluent The devised technique centers on an electrochemical coagulation process, complemented utilization calcium oxide (CaO) as buffering reagent....

In this study, electrodialysis was used to achieve a combined action of capturing carbon dioxide and treating high-salinity water produce hydrochloric acid, hydrogen gas, carbonate bicarbonate salts. Sodium chloride (NaCl) selected as representative salt sea water. A six-chamber cell in which the chambers were separated by monovalent ion-exchange membranes for process. The cathode anode made titanium, with being coated mixed oxides iridium platinum provide corrosion resistance. parametric...

The experimental findings unequivocally demonstrate the superiority of modified Solvay process concerning its CO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> capture efficiency, sodium removal capabilities, and energy efficiency. Notably, while outperforms conventional in removal, it is imperative to acknowledge that further enhancements are necessary through optimization implementation multistage treatment strategies. Despite fact...

Soda ash Na <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> CO xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> ) is conventionally manufactured through the Solvay process, which involves reaction of CO2 with highly saline water in presence ammonia (NH ). This results formation insoluble sodium bicarbonate (NaHCO and soluble ammonium chloride xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> Cl. In present study, an innovative...