Feed Gas Flow Research Articles

Syngas formation by dry and steam reforming of methane using microwave plasma technology

The combined dry and steam reforming of methane at atmospheric pressure was experimentally studied by using microwave plasma technology. The effect of the process parameters such as total feed gas flow rate, steam concentration and input microwave power on the synthesis gas H2/CO ratio was investigated using a commercial microwave reactor system. In order to minimise the carbon formation and plasma instability, the concentration of methane and carbon dioxide in nitrogen plasma were kept at a low level in this study. The long-term test results show that at the flow rate of 0.2 L min−1, 0.4 L min−1 and 1.5 L min−1 for CH4, CO2 and N2 respectively, the carbon formation was not detectable at the input power of 700 W. This reaction condition offers an opportunity to study the effect of adding water to the feed on the syngas ratio H2/CO. The test results show that a higher CH4 conversion (82.74%), H2 selectivity (98.79%) and yield (81.73%) were achieved compared with those of the dry reforming at the same operating conditions. With the steam addition, the desired H2/CO ratio for the Fischer-Tropsch synthesis process can be reached.

Enhancing natural gas dehydration performance using electrospun nanofibrous sol-gel coated mixed matrix membranes

The dehydration process of natural gas was investigated by mixed matrix membranes (MMM), which were fabricated by electrospinning and sol-gel coating methods. Silica and titania nanoparticles (NPs) were incorporated into the polymer matrix via sol-gel method. The fabricated MMMs were characterized by field emission electron microscopy (FESEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). Dehydration tests were carried out for wet pure methane and natural gas streams individually. The effects of different process parameters, including feed and sweep gas flow rates, moisture content in the feed, feed pressure and other hydrocarbons in the feed were investigated. The prepared electrospun nanofibrous supports (ESNS) have smaller fiber diameters in comparison to previously reported works, and with regard to the commercially available materials, contribute to higher water vapor permeation. The results showed that by increasing the feed pressure from 2.5 to 15 bar for the membranes without NPs, the permeance of methane and water vapor was decreased by 8.2 and 29%, respectively. It was also observed that the permeance of heavier hydrocarbons in Pebax 1657 membrane is higher than methane, leading to the increase of H2O/CH4 selectivity and the loss of heavier hydrocarbons. Finally, determining the resistances of the support and selective layers based on the existing empirical relations demonstrated that the total resistance to water vapor transmission had decreased by 75.2% using ESNS instead of microporous supports (MPS). In addition, the contribution of support layer resistances was decreased from 67% in MPS membranes to less than 30% in ESNS ones.

Hydrogen isotopes separation using frontal displacement chromatography: The influences of column temperature and gas flow rate

Based on the previous study in frontal displacement chromatography (FDC) packed with Pd-Al2O3, two groups of separation experiments were conducted to derive the rules how the two most significant factors, temperature and gas flow rate, to influence the separation performance. Separations of the first group were carried out at the feed gas flow rate of 15 mL/min and temperature of 303–213 K, and the second group at 253 K and 10–100 mL/min, with the identical composition of feedstock ((5 ± 0.1)%H2-(5 ± 0.1)%D2-(90 ± 0.1)%Ar). The results indicate the derived rules are consistent with those from references: 1) the rules of temperature effects on separation efficiency lie in two aspects that the lower the temperature is, the larger the thermodynamic separation effect is, and the higher the temperature is, the quicker the hydrogen isotopes exchange dynamics becomes. As to FDC using palladium, 263–213 K will be an appropriate temperature range to have excellent separation performance achieved with the insight into these two aspects. 2) the rule of the influence of gas flow rate basically obeys the van Deemter equation, which means that it does exist an theoretically optimal gas flow rate, ūopt, at a certain temperature and for a certain composition of feedstock, and considering the theoretics and efficiency, separations conducted at the gas flow rate of an suitable range that higher than ūopt but less than 10ūopt can derive good separation performance. The results and discussion have verified the imperative impact of temperature and gas flow rate on the separation performance of this FDC method, and the derived desirable temperature and gas flow rate ranges would supply valuable supports and references for future applications of FDC in hydrogen isotopes separation and tritium recovery in fusion reactors.

Simulation Study of an Oxy-Biomass-Based Boiler for Nearly Zero Emission Using Aspen Plus

Bioenergy integrated CO2 capture is considered to be one of the viable options to reduce the carbon footprint in the atmosphere, as well as to lower dependability on the usage of fossil fuels. The present simulation-based study comprises the oxy bio-CCS technique with the objective of bringing about cleaner thermal energy production with nearly zero emissions, CO2 capture and purification, and with the ability to remove NOx and SO2 from the flue gas and to generate valuable byproducts, i.e., HNO3 and H2SO4. In the present work, a simulation on utilization of biomass resources by applying the oxy combustion technique was carried out, and CO2 sequestration through pressurized reactive distillation column (PRDC) was integrated into the boiler. Based on our proposed laboratory scale bio-CCS plant with oxy combustion technique, the designed thermal load was kept at 20 kWth using maize stalk as primary fuel. With the objective of achieving cleaner production with near zero emissions, CO2 rich flue gas and moisture generated during oxy combustion were hauled in PRDC for NOx and SO2 absorption and CO2 purification. The oxy combustion technique is unique due to its characteristic low output of NO sourced by fuel inherent nitrogen. The respective mechanisms of fuel inherent nitrogen conversion to NOx, and later, the conversion of NOx and SO2 to HNO3 and H2SO4 respectively, involve complex chemistry with the involvement of N–S intermediate species. Based on the flue gas composition generated by oxy biomass combustion, the focus was given to the fuel NOx, whereby different rates of NO formation from fuel inherent nitrogen were studied to investigate the optimum rates of conversion of NOx during conversion reactions. The rate of conversion of NOx and SO2 were studied under fixed temperature and pressure. The factors affecting the rate of conversion were optimized through sensitivity analysiês to get the best possible operational parameters. These variable factors include ratios of liquid to gas feed flow, vapor-liquid holdups and bottom recycling. The results obtained through optimizing the various factors of the proposed system have shown great potential in terms of maximizing productivity. Around 88.91% of the 20 kWth boiler’s efficiency was obtained. The rate of conversion of NOx and SO2 were recorded at 98.05% and 87.42% respectively under parameters of 30 °C temperature, 3 MPa pressure, 10% feed stream holdup, liquid/gaseous feed stream ratio of 0.04 and a recycling rate of the bottom product of 20%. During the simulation process, production of around four kilograms per hour of CO2 with 94.13% purity was achieved.

Performance of dry water- and porous carbon-based sorbents for carbon dioxide capture

Carbon dioxide is the primary greenhouse gas that has a strong impact on global warming. Several technologies have been developed for capturing CO2 to mitigate the greenhouse effect. The objective of this research was to investigate the performance of several sorbents based on dry water and porous carbon materials for capturing CO2. Seven sorbents were prepared and comparatively evaluated for their CO2 capture capabilities: (i) Conocarpus biochar (CBC); (ii) commercial activated carbon (CAC); (iii) normal dry water (NDW); (iv) K2CO3-treated CBC (TCBC); (v) K2CO3-modified dry water (MDW); (vi) MDW and 2% TCBC (MDWTCBC); and (vii) MDW and 2% activated carbon (MDWCAC). The sorption process was carried out with initial CO2 concentration of 5.7%, temperature of 25 °C, feed gas flow rate of 0.5 l min−1 and a pressure of 1.0 bar. The pure CO2 was mixed with O2 or N2 to achieve the desired inlet concentration of CO2. The CO2 adsorption capacity and partition coefficient (PC) of the tested sorbents were evaluated at 5% and 100% breakthrough (BT). The results showed a longer breakthrough and equilibrium adsorption times for CO2 when mixed with N2 than with O2. Among all sorbents, both CAC and CBC showed enhanced CO2 capture performance with equilibrium (100% BT) adsorption capacities of 239 and 197 mg g−1, respectively (in terms of PC: 1.0 × 10−3 and 7.9 × 10−4 mol kg−1 Pa−1, respectively). In contrast, the performance of TCBC and the dry water-based sorbents was far lower than CAC or CBC. The CO2 adsorption data fitted well to the non-linearized form of the pseudo-first-order kinetic model. The Fourier-transform infrared spectral patterns indicated that the reaction of CO2 molecules with the hydroxyl groups of sorbents is possible through the formation of chemisorbed CO2 species. It could be concluded that the activation process did not play a role in increasing the CO2 capture performance in order to form new active sorption sites. However, Conocarpus biochar can be used as efficient sorbent for CO2 capture with a better performance than other materials tested previously (e.g., activated carbon).

Experiment on adaptability of feed gas flow rate and sea conditions on FLNG spiral wound heat exchanger

As one of the core equipment of floating liquid natural gas (FLNG), the spiral wound heat exchanger (SWHE) will be affected by feed gas flow and sea conditions, which will lead to more complex flow and heat transfer process inside the heat exchanger. In this paper, the experimental device of SWHE based on dual mixed refrigeration (DMR) liquefaction process is built to test the adaptability of feed gas flow and sea conditions on SWHE. Meanwhile, a multi-phase four-stream code for liquid natural gas (LNG) SWHE is developed. The following conclusions are obtained: (1) the parallel heat transfer calculation program can predict the change of the heat transfer coefficient and the temperature inside the heat exchanger well. (2) The temperature decreasing rate of feed gas inside SWHE decreases gradually. When the feed gas is liquefied completely, the temperature decreasing rate increases gradually. (3) The heat transfer performance of SWHE is greatly affected under sea conditions.

Research on Manufacturing Technology of Thin-walled Parts of Fe105 metal Based on Laser Cladding

According to some working conditions of thin-walled parts, Fe105 iron-based alloy powder is used to print parts based on laser cladding. Laser cladding, also called 3D Print, is the last manufacturing method in world. The test method of single factor experiment and orthogonal experiment is used to find the best parameters of powder feed rate, laser power, scanning speed and gas flow rate. The research is based on the laser cladding, using advanced equipment, such as, OM, SEM, Micro-hardness, to find out the best parameters of laser machine. Also, by the equipment, the morphology and characteristic of thin-walled parts were studied.

Decomposition of high concentration benzene (produced in paper and painting industries) and its byproducts, methane and carbon dioxide, using plate gliding arc.

High concentration benzene production in paper and painting industries is a restrictive problem in production line of companies. In this study, removal of high concentrated benzene produced in painting companies was investigated using a Plate Gliding Arc (PGA) reactor. Decomposition of methane and carbon dioxide as the most predominate byproducts of benzene decomposition was also studied using (PGA) reactor. The effect of several parameters such as input power, feed gas flow rate, type of carrier gas, and [CH4/CO2] flow ratio was studied by two series of experiments. The results show significant conversion (>70%) of high concentration benzene (74000ppm) without using any catalyst. Selectivity of CO2 and CO was 88% and 10% respectively showing complete oxidation of benzene. The maximum conversion of CH4 and CO2 reached 52% and 69%, respectively by using optimum ratio of 3:4. The main results of this study proved removal of high concentration benzene using a low-energy-density reactor. Furthermore, an optimum value for efficient conversion of methane and carbon dioxide was achieved and the energy density of the PGA reactor was evaluated, which shows a good promise for industrial applications.

Enhanced CO selectivity for reverse water‐gas shift reaction using Ti4O7‐doped SrCe0.9Y0.1O3‐δ hollow fibre membrane reactor

AbstractReverse water‐gas shift reaction (RWGS) is important in the CO2 utilization cycle to convert carbon dioxide (CO2) and hydrogen (H2) to carbon monoxide (CO). In this work, the RWGS performance is evaluated by utilizing Ti4O7‐doped SrCe0.9Y0.1O3‐δ (SCY‐b) hollow fibre membrane reactor where H2 permeates through the SCY‐b proton conducting membrane and reacts with CO2 feed gas. Upon increasing the temperature from 750 to 950 °C, the CO yield increased from a negligible value to 14.82 %, when the sweep gas flow rate was 50 mL min−1 H2‐He (50:50 vol. ratio) and the feed gas flow rate was 100 mL min−1 CO2‐N2 (5:95 vol. ratio). The CO yield increase with the temperature increase reflects the enhanced H2 permeation flux through the SCY‐b membrane at higher temperatures. Higher CO2 concentration in the feed gas led to lower CO yield due to the higher amount of remaining CO2 in the outlet stream. The deposition of porous SCY or SCY‐b surface layer onto the hollow fibre outer circumference surface also increased H2 flux through the fibre relative to the non‐deposited one. Thermogravimetric and CO2‐temperature programmed desorption results further reveal that SCY‐b adsorbed CO2 at temperature above 500 °C due to the reaction between CO2 and SCY‐b material. Despite the formation of SrCO3 during RWGS, the SCY‐b hollow fibre membrane reactor still displayed a stable CO yield of around 14 % throughout the 6‐day continuous membrane reactor test.

High-Temperature Co-Electrolysis: A Versatile Method to Sustainably Produce Tailored Syngas Compositions

High-temperature co-electrolysis of carbon dioxide and steam is a promising method to produce ‘white’ syngas by making use of renewable energy and carbon dioxide as sustainable feedstock. The technological key advantage is the possibility to tailor syngas compositions over a broad range. This paper presents a systematic investigation of the syngas tailoring process by establishing relationships between feed gas compositions and flow rates to the syngas ratio. A linear dependence between the H2O:CO2 ratio in the feed gas and the H2:CO ratio in the output gas was observed. Furthermore, the syngas ratio remains mostly invariant upon variations in electrochemical potential and fluctuating gas utilizations/flow rates during operation of a co-electrolysis cell. Most importantly, the co-electrolysis performance was demonstrated to operate at high current densities of up to 3.2 A·cm−2 over a broad range of feed gas compositions with faradaic efficiencies of nearly 100%. The possibility to operate co-electrolysis under transient load conditions renders this method particularly suitable in future scenarios of intermittent availability of renewables. The results described here illustrate the versatility of co-electrolysis, which can produce all relevant syngas compositions in a single-step process at constantly high performance.

Input-state estimation of a spatially distributed tubular gasification reactor

Abstract The problem of on-line estimating the gas feed flow input and the 13 (2 flows, 1 temperature and 10 component)-profile state of a bistable tubular gasification reactor is addressed. The estimator must be developed from the underlying first principles nonlinear partial differential equation (PDE) model in conjunction with feed and sensitive-location temperature measurements. The problem is solved through the dynamical inversion of an efficient finite differences (FD)-based differential-algebraic equation (DAE) model approximation of the PDE one. It is found that, using a model previously calibrated against experimental data, the problem can be solved with a DA inverse made of 60 ODEs and 180 AEs.

Optimization of Welding Parameters and Microstructure and Fracture Mode Characterization of GMA Welding by Using Taguchi Method on SS304H Austenitic Steel

Abstract This study is centre on optimizing different welding parameters which affect the weldability of SS304H, Taguchi technique was employed to optimize the welding parameters and fracture mode characterization was studied. A number of experiments have been conducted. L9 orthogonal array (3×3) applied for it. Analysis of variance (ANOVA) and signal to noise ratio (SNR), a statistical technique was applied to determine the effect of different welding parameters such as welding current, wire feed speed and gas flow rate on weldability of SS304H. Tensile strength, toughness, micro hardness and mode of fracture was examined to determine weldability of SS304H and it was observed from result that welding voltage have major impact whereas gas flow rate has minour impact on ultimate tensile strength of the welded joints and optimum process parameters were found to be 23 V, 350 IPM travel speed of wire and 15 l/min gas flow rate for tensile strength and mode of fracture was ductile fracture for tensile test specimen.

Effect of Some Technological Parameters on the Conversion of Dimethyl Ether to Light Olefins in a Slurry Reactor

Effect of mode parameters, such as the feed gas flow rate, its content of dimethyl ether, and content of a catalyst in the suspension, on the main parameters of the dimethyl ether conversion into light C2–C4 olefins in a three-phase system (slurry reactor) in the presence of a catalytic suspension based on a nanosize zeolite Mg–MFI dispersed in silicone oil was examined. The values of the parameters, at which the conversion of dimethyl ether occurs in the steady state mode under favorable hydrodynamic conditions at a relative chemical stability of the dispersion medium and its minimum mechanical entrainment from the reactor, were found. Irrespective of the dimethyl ether concentration in the operating gas, the reaction was shown to occur with conversion of up to ~80% at selectivity of ~50%, and ethylene is the main reaction product (up to 30 wt %).

Optimisation of CH4 and CO2 conversion and selectivity of H2 and CO for the dry reforming of methane by a microwave plasma technique using a Box–Behnken design

AbstractA microwave plasma was generated by N2 gas. Synthesis gases (H2 and CO) were produced by the interaction of CH4 and CO2 under plasma conditions at atmospheric pressure. The experimental pilot plant was set up, and the gases were sampled and analysed by gas chromatography–mass spectrometry. The Box–Behnken design (BBD) method was used to find the optimising conditions based on the experimental results. The response surface methodology based on a three‐parameter and three‐level BBD has been developed to find the effects of independent process parameters, which were represented by the gas flow rates of CH4, CO2, and N2 and their effects on the process performance in terms of CH4, CO2, and N2 conversion and selectivity of H2 and CO. In this work, four models based on quadratic polynomial regression have been determined to understand the connection between the limits of the feed gas flow rate and the performance of the process. The results show that the most important factor influencing the CO2, CH4, and N2 conversion and the selectivity of H2 and CO was “CO2 feed gas flow rate.” At the maximum desirable value of 0.92, the optimum CH4, CO2, and N2 conversion were 84.91%, 44.40%, and 3.37%, respectively, and the selectivities of H2 and CO were 51.31% and 61.17%, respectively. This was achieved at a gas feed flow rate of 0.19, 0.38, and 1.49 L min−1 for CH4, CO2, and N2, respectively.

Effect of impregnated activated carbon on carbon dioxide adsorption performance for biohydrogen purification

The challenge in biohydrogen (bio-H2) production is the presence of low hydrogen purity, which contains a high concentration of carbon dioxide (CO2). Bio-H2 purification systems are required to produce high-purity hydrogen for industrial applications, such as adsorption for CO2 removal. This study tested the effect of impregnated activated carbon (AC) and feed gas flow rate on CO2 adsorption performance. Different types of adsorbents were synthesized by impregnating the chemical on AC, such as potassium iodide, potassium hydroxide, copper (II) sulfate, sodium carbonate, and zinc acetate. The feed gas flow rate was varied in the range of 0.25–1.0 L min−1 by using synthetic bio-H2 gas, that is, mixing the gas with 50 vol.% H2 and 50 vol.% CO2. The CO2 adsorption performances of the synthesized adsorbents were evaluated in terms of breakthrough time and adsorption capacity. To evaluate the reusability of the adsorbents, adsorption–desorption cycles were conducted for several times. For desorption, atmospheric air was used to remove the adsorbed CO2 from the adsorbents. The effect of air flow rate on CO2 desorption was assessed by setting the air flow rate to be between 100 and 350 L min−1. The impregnated AC with zinc acetate displayed the highest adsorption capacity of 63.61 mg CO2/g adsorbent and the longest breakthrough time of 25.7 min. The optimum feed gas flow rate was 0.25 L min−1, thereby demonstrating that the lowest feed gas flow rate resulted in the highest adsorption capacity. Moreover, desorption was faster at higher air flow rates.

Nafion/TiO2 nanoparticle decorated thin film composite hollow fiber membrane for efficient removal of SO2 gas

In this work, thin film nanocomposite (TFN) membranes for SO2 gas removal have been fabricated by incorporation of PEBAX and Nafion/TiO2 (hereafter referred as Nf/TiO2) nanoparticles on a polyethersulfone hollow fiber membrane substrate. Membrane structure, inner coating, and thickness were confirmed by SEM cross-sectional images. In addition, morphological and structural analyses of the membranes were performed using FTIR, SEM, EDX, TEM, and AFM. To investigate the effects of Nf/TiO2 nanoparticles on the gas permeation performance, four membrane modules with different mass concentrations of Nf/TiO2 – 0.025, 0.050, 0.075, and 0.1 g – were fabricated. The gas permeation experiments were performed with pure SO2, N2, and CO2 gases and a mixed gas (SO2/CO2/N2) within a pressure range of 1–3 bar and feed gas flow rate of 0.03–0.15 L/min. The obtained experimental results suggest that the addition of Nf/TiO2 nanoparticles improved the membrane performance by introducing sulfonate and hydroxyl functional groups to the membrane, and thus increased SO2 permeation and selectivity. The SO2 permeation was found to be 411–1671 GPU in the range of the studied parameters. The ideal selectivities achieved for SO2/N2 and SO2/CO2 were 2928 and 72, respectively. Overall, an SO2 removal efficiency of 93% was achieved by using the Nf/TiO2 incorporated TFN membrane.

Measurement and Characterization of a High-Temperature, Coke-Resistant Bi-functional Ni/BZY15 Water-Gas-Shift Catalyst Under Steam-Reforming Conditions

This paper characterizes the bi-functional behavior of a unique, nano-dispersed Ni/BZY15 water-gas-shift catalyst under steam-reforming conditions. The catalyst is highly active above 500 $$^\circ$$ C and has been found to be exceptionally stable in a hydrocarbon steam reforming environment. The performance can be attributed to two features: (1) well dispersed, nano-sized Ni particles with high surface area, and (2) the ability of the redox-active BZY15 support to remove carbon from the Ni. The bi-functionality is demonstrated through a comparison of WGS activity with BZY15 alone and with a traditional $$\text {Al}_2\text {O}_3$$ support. The WGS activity is measured under a range of operating temperatures, steam-to-carbon ratios, and feed-gas flow rates. A series of elementary reaction steps are proposed to explain the bi-functionality and to provide a basis for development of a detailed reaction mechanism.

Optimization of parameters involved in robotic MIG welding process based on quality responses

Automation in the welding process are preferred for the enhancement of quality and time reduction. Robots are widely used for welding process in sheet metal fabrication industries. In this study, the parameters of robotic (ABB IRB 1520) Metal Inert Gas (MIG) welding process (reference voltage, wire feed rate and gas flow rate) is optimized based on the quality responses such as depth of penetration, bead width and reinforcement at welded joints in IS2062 (GRADE A) material. In order to locate optimum conditions with a relatively small number of experiments in parameter optimization, Response Surface Methodology is used. RSM is an empirical approach which uses the polynomials as local approximation to relate the true relationship between input and output. The process improvement in industrial setting is achieved by this empirical approach. The mathematical model has been deduced based on experimental data and model selection techniques. And the approach reveals the condition which favour the good balance between maximum penetration, minimum bead reinforcement and minimum bead width.

The pilot dual-reflux vacuum pressure swing adsorption unit for CO2 capture from flue gas

The results of carbon dioxide separation from real flue gas using the dual-reflux vacuum pressure swing adsorption (DR-VPSA) technology have been presented. The mobile pilot CO2 separation plant consists of two containers: a processing container and a control container. The processing container includes a flue gas treatment section (which comprises dust removal, cooling, deSOx, deNOx, gas drying and compression units), as well as a CO2 adsorptive separation unit. The adsorption unit is made up of four fixed-bed columns, each divided into two sections, operating in a dual-reflux vacuum pressure swing adsorption mode. Two kinds of activated carbon in the total amount of 540 kg were used as the beds filling. The results from the 8-step reference process with no partition of the adsorbers into the upper and lower sections (as one-step separation process with partial product recirculation), and from the 9-step DR-VPSA process (as two-step separation process) with a division of the adsorbers are presented. In the measurement campaign three different feed gas flow rates and five different times of adsorption step were selected to assess their influence on separation results. The results show the optimal parameters of 100 Nm3/h for feed gas flow rate and 300 sec for adsorption step time for both mentioned processes. The 87.5% of purity, 44.6% of recovery, 11.4 kg/(m3 h) of productivity and 978 kWh/MgCO2 of energy demand for gas compression and vacuum evacuation in the case of optimal parameters of 9-step DR-VPSA technology were obtained. Additionally the results from measurement campaign were compared with those reported by other researchers.

Impregnated carbon–ionic liquid as innovative adsorbent for H2/CO2 separation from biohydrogen

Currently, purification is a considerably important technology for biohydrogen (bioH2) production as a renewable energy resource. Adsorption methods are promising techniques for separation of CO2 from the H2/CO2 mixture of bioH2. In this study, the adsorbent is synthesized by impregnating activated carbon (AC) with ionic liquid (IL). The ILs were prepared using choline chloride and zinc chloride at different wt% with the AC, i.e., 0.5 wt%–3 wt%. The physical and chemical properties of the synthesized adsorbents, such as surface morphology, porosity, and structures, were investigated and characterized by using scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and Brunauer–Emmett–Teller analysis (BET). To investigate the actual adsorption performances, the effects of different synthesized adsorbent types and feed gas flow rates, i.e., 0.1–1.0 L min−1, were observed. Hence, a commercial gas composed of CO2 and H2 mixture with different compositions, i.e., 40, 50, and 60 vol%, was used as synthetic bioH2 gas. The adsorption capacity of CO2, i.e., adsorption capacity, were determined using single adsorber column (0.6 L) at a temperature of 300 K and pressure of 1 bar. Results showed that adsorption capacity decreased with the increased feed gas flow rate. Moreover, the carbon impregnated with 1 wt% of IL showed the most excellent adsorption capacity at 84.89 mg of CO2/g of adsorbent. The present results are the initial findings generated for the bioH2 separation technology for future high-purity hydrogen production.