All publications

Mass transport, kinetic model, and application of CO2 adsorption on zeolite 5A granules

Supawon Sangsuradet, Patcharin Worathanakul

CLEAN - Soil Air Water · 2023

Abstract Environmental damage ranges from soil degradation, air pollution, and wastewater from human‐induced activity. In this study, to reduce CO2 emission, zeolite granules were prepared manually. In addition, the mass transfer and kinetic adsorption were analyzed to understand the mechanism of CO2 adsorption using mathematical models. We studied the effects of amount of binder, temperature, granule size, and flow rate of CO2 on efficient CO2 adsorption on zeolite 5A granules of different sizes (3–4 and 6–7 mm). The kinetics of CO2 adsorption and mass transfer of zeolite 5A granules were evaluated for the rate‐limiting step. The results showed that decreasing the temperature and the amount of binder increased the CO2 adsorption capacity. We observed the highest CO2 adsorption capacity of 2.84 mmol g−1 at 298 K with 4 wt% of the binder at a flow rate of 2 L h−1. The pseudo‐first‐order sorption behavior was the best model with R2 > 0.9832, whereas the root mean square error model showed an R2 < 0.2136. The Biot number and film diffusion model were used to investigate the importance of external mass transfer on intraparticle diffusion. It was confirmed that the adsorption on sustainable zeolite 5A granules was controlled by film diffusion.

The Diffusion Behavior of CO2 Adsorption from a CO2/N2 Gas Mixture on Zeolite 5A in a Fixed-Bed Column

Arunaporn Boonchuay, Patcharin Worathanakul

Atmosphere · 2022

The objective of this research was to investigate the behavior and conditions for CO2 adsorption using a mixture of CO2/N2 over a fixed-bed column of zeolite 5A. The study was performed with a variation in gas composition of CO2/N2 as a 20/80, 50/50, and 80/20 volume %, the adsorption temperatures as 298, 333, and 373 K and the total feed flow rates as 1, 2, and 4 L/h under 100 kPa pressure. The Bohart–Adams, Yoon–Nelson, and Thomas models were used to predict the breakthrough behavior of CO2 adsorption in a fixed column. Furthermore, the adsorption mechanism has been investigated using the kinetics adsorption of pseudo-first-order, pseudo-second-order, Boyd model, and intraparticle model. Increasing the CO2 composition of a gas mixture resulted in a high CO2 adsorption capacity because of the high partial pressure of CO2. The capacity of CO2 adsorption was decreased with increasing temperature because of physical adsorption with an exothermic reaction. The CO2 adsorption capacity was also decreased with increasing feed flow rates with inadequate time for CO2 adsorbates diffusion into the pores of the adsorbent before exiting the packed bed. The CO2 adsorption by zeolite 5A confirmed that the physical adsorption with intraparticle diffusion was the rate-controlling step of the whole process.

Comparative Study of Zn Loading on Advanced Functional Zeolite NaY from Bagasse Ash and Rice Husk Ash for Sustainable CO2 Adsorption with ANOVA and Factorial Design

Patchaya Tobarameekul, Supawon Sangsuradet, Patcharin Worathanakul

Atmosphere · 2022

The objectives of the research were to develop synthesis and estimation of each factor on carbon dioxide adsorption of advanced functional zeolite NaY material derived from bagasse ash and rice husk ash with different crystallization temperatures and weight percentages of zinc by the ion exchange method. The adsorbents were tested in a packed bed reactor at different temperatures and flow rates of carbon dioxide. The Minitab program was used to estimate the effects of each factor on carbon dioxide adsorption properties. The results showed that extracted silicon dioxide from bagasse ash and rice husk ash could be successfully used as raw material for zeolite NaY synthesis with a crystallization temperature of 298.15 K. The zeolite NaY crystalline structure was well-preserved after ion exchange. The highest capacity of carbon dioxide adsorption was at 10.33 mmol/g with zeolite 5B298-373-1. The results of the Minitab program showed that the carbon dioxide adsorption decreased with increasing crystallization temperature and carbon dioxide flow rate parameters. However, the increased weight percentage of zinc loading on zeolite NaY resulted in better carbon dioxide adsorption. The factors of the types of adsorbents and adsorption temperature showed interaction with each other.

Simulation and Experimental Studies on Sustainable Process Optimization of CO2 Adsorption Using Zeolite 5A Pellet

Boonthita Wongchalerm, Thanaporn Arunchai, Thanayut Khamkenbong, Supawon Sangsuradet, Anurak Pitiraksakul, Patcharin Worathanakul

Applied Science and Engineering Progress · 2022

This study focused on a quantitative study of the CO2 adsorption dynamic within the adsorbent particle. It could drive and improve ideal pore characteristics and the adsorption process efficiency. The parameters operating conditions for the CO2 adsorption process of zeolite 5A pellet were studied using Aspen Adsorption. The effects of compression force (200–400 MPa), compression time (5–15 min), and addition of bentonite binder (0–15% wt. of bentonite binder) for zeolite 5A pelletization and temperature for CO2 adsorption ranging from 298–373 K were studied. There was an error from the simulation of approximately 0.34–10.62% compared to the experimental results. The results showed that the interparticle voidage was reduced, and the appropriate mass transfer was required for good CO2 adsorption capacity. Reduction of interparticle voidage is achieved using a small compression force, a short compression duration, and a small bentonite binder, all of which significantly increase CO2 adsorption capacity. The mass transfer must be within the optimum range because it will decrease the contact time between the zeolite surface and the CO2 molecules. The CO2 adsorption increases with the gas phase temperature decrease. The result showed that the maximum CO2 adsorption by zeolite 5A was 7.078 mmol CO2/g with 0 wt% bentonite binder, 200 MPa, and 5 min at 298 K, 1 atm pressure.

Modified hierarchical zeolite X derived from riceberry rice husk for propionic acid adsorption

Nareerat Na chat, Supawon Sangsuradet, Patchaya Tobarameekul, Patcharin Worathanakul

Materials Chemistry and Physics · 2022

Optimization of CO2 Adsorption and Physical Properties for Pelletization of Zeolite 5A

Patcharin Worathanakul, Supawon Sangsuradet, Boonthita Wongchalerm, Thanaporn Arunchai, Thanayut Khamkenbong

Current Applied Science and Technology · 2021

This research investigated the effects of compression force, compression time, and addition of bentonite binder on zeolite 5A pelletization. Carbon dioxide (CO2) adsorption of zeolite 5A pellets was tested in a laboratory-scale packed-bed reactor at 298 K, atmospheric pressure and 2 l/h flow rate. Zeolite 5A pellets were prepared using a pelletization technique at 200-400 MPa compressive force, 5-15 min compression time, and with 0-15% wt. of bentonite binder. The specific surface area and density of zeolite 5A pellets increased with increase of compression force. Compression force led to increase in specific surface area and resulted in an agglomeration of zeolite pellets, making CO2 molecules more difficult to become active sorbent. The addition of bentonite into zeolite 5A pellets with more compression time resulted in the reduction of specific surface area. The compression force and mass fraction of the binder were found to offer significant control over CO2 adsorption capacity. No addition of binder, 200 MPa compression force and 5 min compression time resulted in a maximum CO2 adsorption capacity of 3.64 mmol CO2/g. This research indicated that zeolite 5A pellets have a beneficial effect and high potential as an adsorbent, especially in terms of CO2 adsorption and environmental applications

Static and Dynamic Simulation of Single and Binary Component Adsorption of CO2 and CH4 on Fixed Bed Using Molecular Sieve of Zeolite 4A

Supatsorn Parinyakit, Patcharin Worathanakul

Processes · 2021

The simulation of carbon dioxide (CO2)-methane (CH4) mixed gas adsorption and the selectivity on zeolite 4A using Aspen Adsorption were studied. The influence of temperature ranging from 273 to 343 K, pressure up to 10 bar and various compositions of CO2 in the binary system were simulated. The findings of the study demonstrate that the models are accurate. In addition, the effects of various key parameters such as temperature, pressure, and various compositions of binary gases were investigated. The highest CO2 and CH4 adsorption are found at 273 K and 10 bar in the Langmuir isotherm model with 5.86 and 2.88 mmol/g, respectively. The amount of CO2 adsorbed and the selectivity of the binary mixture gas depends on the composition of CO2. The kinetics of adsorption for pure components of CO2 at high temperatures can reach saturation faster than CH4. The influence of the physical properties of zeolite 4A on kinetic adsorption were also studied, and it was observed that small adsorbent particles, large pore diameter, and large pore volume would enter saturation quickly. The prediction of CO2-CH4 mixed gas adsorption and selectivity on zeolite 4A were developed for further use for commercial gas separation.

Enhancement of CO2 Adsorption Containing Zinc-ion-exchanged Zeolite NaA Synthesized from Rice Husk Ash

Patchaya Tobarameekul, Supawon Sangsuradet, Nareerat Na Chat, Patcharin Worathanakul

Applied Science and Engineering Progress · 2020

Carbon dioxide is main causes the greenhouse effect and it contributes to global warming. Zeolite NaA is an excellent adsorbent among other materials but its potential as a carbon dioxide adsorption still needs to be developed. Therefore, this research was to synthesize zeolite NaA from rice husk ash under different temperatures and crystallization times. The synthesized zeolite NaA was modified with zinc by an ion exchange method. Adsorbents were tested for the carbon dioxide adsorption at different operating temperatures and flow rates. The results showed that the zeolite NaA was successfully synthesized from rice husk ash under optimal conditions of the crystallization temperature at 333.15 K and time for 2 h. The zeolite NaA can be synthesized at low crystallization temperature and time resulted in this adsorbent has low cost while achieving high efficiency. The results of zeolite NaA modification with zinc playing a key role to increase the BET surface area, micropore volume and total pore volume resulted in an increase of carbon dioxide adsorption capacity. High carbon dioxide adsorption at 89.08% with the operating temperature at 573.15 K and carbon dioxide flow rate of 1 L/h were shown with 5 wt.% zeolite NaA.

A Study of CO2 Thermodynamic Adsorption and Desorption with Bi-Metal Loading on Zeolite Y

Peeradaphan Saisuwansiri, Patcharin Worathanakul

Materials Today Proceedings · 2019

Simulation of CO2 Adsorption to Enhance Adsorbent Material Efficiency

Supawon Sangsuradet, Patcharin Worathanakul

Key engineering materials · 2018

Computer simulation techniques have gained many attentions. The objective of this research was to study influence of the exchangeable cations of Group 1A (Li+, Na+, K+, Rb+, Cs+) on the CO2 adsorption in the system using Grand Canonical Monte Carlo (GCMC) simulation. In this simulation, zeolite is a simulation box. The interaction potential simulation with Lennnard-Jones potential showed that Li+ and CO2 had the greatest molecular attraction with Li+ having the highest number of CO2 molecules in the simulation box. The number of CO2/molecules in the simulation box are as followed with Li+ > Na+ > K+ > Rb+ > Cs+.