Paitoon Tontiwachwuthikul

• Ph.D. in Chemical Engineering (UBC, CANADA); MIT Sloan Executive Certificate (USA)
• Professor at University of Regina

In order to reduce the massive heat duty of amine-based CO2 capture technology, an AlOOH/FeOOH composite catalyst (AF-M/N) was synthesized to speed up the CO2 desorption rates and reduce the heat duty of an aqueous MEA solution. The catalysis of AF-M/M from 1/9 to 9/1 was investigated comprehensively, with characterization of the catalytic desorpti...

This study developed the presented process simulation based on the design parameters of typical gas plant CCS units in North America. Since the recovered waste heat technology is a new commercial design in solvent regeneration processes, the parametric sensitivity study could provide several detailed optimization methods for further operations. The...

In this study, the high potential tertiary N-methyl-4-piperidinol or MPDL (0.25–1.00 M) was blended with 5 M monoethanolamine (MEA) to formulate 5.25–6.00 M MEA-MPDL solvent and compare with the benchmark 5 M MEA. It was found that the density and the Henry’s constant slightly decreased, while the viscosity increased as the MPDL concentration in th...

To reduce the huge energy cost of CO2 capture technology applicable in industry, the CO2 absorption–desorption performance was conducted in a novel bench-scale pilot plant with hot water as a heat source. The trisolvent MEA(monoethanol amine)–BEA(butylethanol amine)–AMP(2-amino-2-methyl-1-propanol) was prepared at a specific concentration to analyz...

Although coal mining has played a substantial role in world’s development as a critical fuel source for at least 25 years, its value is partly offset by the massive environmental issues it presents during combustion. The shift to a net-zero CO 2 emission will open unique possibilities for new coal technological models in which progressive studies a...

To explore the regulatory factor of phase separation and the effect of solvent structure, the phase separation behavior, absorption/desorption performance, viscosity change, heat duty and ternary phase diagram of 3 monoethanolamine(MEA)-based phasic absorbents using 3 alcohols with various carbon chain lengths and isomers were determined by compreh...

Flue gas stream generated from combusted natural gas, petroleum, and coal in power plants contains enormous CO2 with detrimental effects on the environment. CO2 capture systems must be integrated into these power plants to prevent emissions of CO2 into the open atmosphere. This work uses rate-based process modelling and a parametric design approach...

This study explored potential of highly concentrated AMP-PZ-MEA solvent for capturing CO2 in terms of solvent precipitation, density, viscosity, and CO2 absorption capacity. It was found that most of the studied AMP-PZ-MEA solvents precipitated at high AMP and PZ concentrations and at high CO2 loading. The minimum possible MEA concentration (which...

This research presented the new experimental results of the absorption and desorption performance of various single and blended solvents in terms of initial CO2 absorption rate, initial desorption rate for blank solvents and solvents with the aid of HZSM-5 catalyst, and equilibrium CO2 solubility. MEA and PZ are two promoters used to facilitate sev...

In this work, new ANN models were developed and correlated with the CO2 equilibrium solubility in three new tertiary amines of 1-dimethyl-amino-2-propanol (1DEA2P), 1-dimethylamino-2-propanol (1DMA2P), and 1-(2-Hydroxyethyl)-piperidine (1-(2-HE) PP). The predicted data of CO2 solubility extracted from the newly developed ANN model was consistent wi...

Novel N-methyl-4-piperidinol (MPDL)-based solvents have been considered as high potential solvents for post combustion carbon capture, especially for power generation industry. To comprehensively investigate the CO2 absorption-regeneration performance of MPDL-based solvents, transport properties (i.e., density, viscosity, and physical CO2 diffusivi...

In this study, volumetric, viscometric, and refraction properties of binary 4-diethylamino-2-butanol (DEAB) and water mixture were comprehensively investigated over an entire range of amine concentration and a temperature range of 298.15-343.15 K. In addition to typical density, viscosity, refractive index, and their excess properties, the associat...

This study used ProMax® 5.0 process simulator to develop three innovative configurations for cement plant flue gases specifically. A detailed evaluation of three innovative configurations was presented, and the advanced technical and economic benefits of the three innovative configurations were compared with the conventional configuration. The simu...

In the present work, the kinetics of the reactive absorption of CO2 in 1‐dimethylamino‐2‐propanol (1DMA2P) solution were experimentally measured using a laminar jet absorber over a temperature range of 298–313 K, 1DMA2P concentration range of 0.5–2.0 mol/L, and CO2 loading range of 0–0.06 mol CO2/mol amine. The measured kinetics data were then used...

In this work, the density, viscosity, and specific heat capacity of pure 1‐dimethylamino‐2‐propanol (1DMA2P) as well as aqueous unloaded and CO2‐loaded 1DMA2P solution (with a CO2 loading of 0.04–0.70 mol CO2/mol amine) were measured over the 1DMA2P concentration range of 0.5–3.0 mol/L and temperature range of 293–323 K. The observed experimental r...

The slow kinetics of CO2 absorption and high energy cost of CO2 desorption were the main challenges for CO2 capture technology. To overcome these drawbacks, a novel tri-solvent MEA (monoethanolamine) + EAE (2-(ethylamino)ethanol) + AMP (2-amino-2-methyl-1-propanol) was prepared at different amine concentrations of 0.1 ~ 0.5 + 2 + 2 mol/L. The CO2 a...

In this work, new CO2 solubility data on three types of aqueous amine blends were reported to complement existing databases. The experiments were conducted at temperatures of 313 K (absorption condition) and 363 K (desorption condition). The effect of the MEA concentration on the CO2 solubility in several amine blends at low CO2 partial pressure (8...

Post-combustion carbon capture (PCC) is a mature technology, which aims to capture CO2 from industrial emitters by using practical amine solvents. However, solvent regeneration process requires huge energy cost. Mechanical vapor recompression (MVR) is a promising technique, which can be applied to regenerate the heat from different fluid streams to...

Antibiotic drugs have become dominating organic pollutants in water resources, and efficient removal of antibiotic drugs is the priority task to protect the water environment. Cu3P/SnO2 photocatalysts of various Cu3P loadings (10-40 wt% Cu3P) were synthesized using a combination of hydrothermal synthesis and a partial annealing method. Their photoc...

Solubility of hydrogen sulfide (H2S) in 46 single and blended physical absorbents, amines, ionic liquids, and hybrid absorbents of amines + ionic liquids and amines + physical absorbents was successfully predicted based on artificial neural networks (ANNs). Three neural network algorithms of Levenberg-Marquardt (LM), Bayesian regularization (BR), a...

In the present work, novel blended piperazine (PZ) and N-methyl-4-piperidinol (MPDL) solvent was investigated in terms of density, viscosity, physical diffusivity of CO2, and CO2 absorption capacity. Density and viscosity were measured over PZ/MPDL concentration ratios of 5/25, 10/20, and 15/15 %wt. and temperatures of 313, 323, and 333 K. Physical...

Hydrogen mixed natural gas for combustion can improve combustion characteristics and reduce carbon emission, which has important engineering application value. A casing swirl burner model is adopted to numerically simulate and research the natural gas hydrogen mixing technology for combustion in gas boilers in this paper. Under the condition of con...

Compression and liquefaction of carbon dioxide are important parts of the carbon capture, utilization, and storage (CCUS) process. A CCUS project with an actual workload of 1 million tons/year of China is simulated and analyzed in this paper. A new process scheme of compressed liquefaction of CO2 in the CCUS project by using liquid natural gas (LNG...

The research conducted in the last five years can potentially paint a picture of the next generation’s research related to solvent development for post-combustion carbon dioxide capture. This paper presents a comprehensive summary of the research work in this field conducted in the period from 2015 to 2020. The work includes research efforts in the...

In this study, the absorption process of the aqueous DEEA solution for CO2 capture in polytetrafluoroethylene hollow-fiber membrane contactor was investigated by both experiment and simulation. Based on the finite element analysis method, a two-dimensional steady-state mathematical model was established using COMSOL Multiphysics simulation software...

In this research, a new set of experimental data for CO2 solubility in aqueous blended amine solvents were investigated experimentally over the CO2 partial pressure range from 8 to 100 kPa at 40 °C and were compared with the benchmark aqueous 30 wt.% MEA solution. This work developed two multilayer neural network models named models A and B, for pr...

The “coordinative effect” was discovered in MEA + DEA solvents in 2018 via CO2 absorption, and it could enhance both CO2 absorption & desorption within MEA + RR’NH solvents. This study expanded the scope out of MEA + DEA and implemented it by blending MEA into BEA(RR’NH)+AMP solvents. The CO2 absorption, desorption and mass transfer performance wer...

The “coordinative effect” was discovered in MEA + DEA bi‐solvents already, and it enhances both CO2 absorption and desorption within MEA + RR'NH simultaneously. A recent study verified strong coordinative effects within MEA + BEA (RR'NH) + AMP tri‐solvents, but whether the coordination was 100% attributed to interaction of MEA + BEA needs to be con...

In the present study, kinetics of CO2 absorption in novel formulated 2-amino-2-methyl-1-propanol (AMP) and N-methyl-4-piperidinol (MPDL) solvent was investigated in a stirred tank reactor over ranges of temperature (303–333 K) and concentration (5% wt. AMP-25% wt. MPDL, 10% wt. AMP-20% wt. MPDL, and 15% wt. AMP-15% wt. MPDL). A drop of pressure met...

For the envisaged large number of commercial-scale carbon capture and storage (CCS) projects that are to be implemented in the near future, a number of issues still need to be resolved, the most prominent being the large capital and operational costs incurred for the CO2 capture and compression process. An economic assessment of the capture and com...

The intensive energy requirement for rich solvent regeneration is the biggest obstacle to the widespread industrial application of amine-based CO2 capture technology. To address this challenge, here, for the first time, the composite catalysts SO42−/ZrO2/SBA-15 (SZS) with varying ZrO2 content were synthesized and then used to reduce heat duty for t...

Abstract: Amine-Based CO<sub>2 Capture Aided By Acid/Base Catalyst: Advancement of Amine Regeneration Using Fe-MCM-41 Catalyst (2019 AIChE Annual Meeting) https://aiche.confex.com/aiche/2019/webprogram/Paper560159.html

The most critical challenge for the industrial implementation of amine solution CO2 capture is the high heat duty of rich solvent thermal regeneration. Despite significant efforts to lower energy consumption, including employing new amine solvents and process intensification, a novel approach of overcoming this challenge is still demanded. Here, we...

To figure out the influence of different factors on the diffusion of carbon dioxide (CO2) in oil saturated porous media, an experimental method using a multifunctional core displacement instrument instead of a PVT Cell was proposed to monitor the pressure decay in ten cores (porous media) under high temperature from 20 oC to 80 oC and pressure from...

One of the energy-efficient approach was to adopt amine blends with the combination of heterogeneous catalysts as a new solution for an amine scrubbing process of a coal-fired pilot plant. The major challenge was the contradiction that the energy-efficient amine solvents in the desorber usually behave poorly in the absorber. This study re-investiga...

In the operational process for the post combustion CO2 capture plant, there are several issues related to the cost of plant, which need be addressed. Among those issues, the corrosion and the degradation are the emergency problems when the plant is running. The corrosion and degradation could create the problems for the plant, which leads to the sh...

Design is the key step for the commercial process of post combustion CO2 capture by using the amines based solvents. Also, the simulation of the CO2 capture process could provide the guideline or more information for the design. The improvement or enhancement of the process configuration could be achieved by using the simulation. This chapter consi...

In this chapter, the method about selection of amine solvent for CO2 capture plant was proposed in order to improve the efficiency of the process. The properties of amines solvents related to CO2 capture were discussed in order to design the plant based on the selected amines. The physical properties (i.e. density, viscosity, specific heat capacity...

Recently the worsening global warming issue caused by emissions and accumulation of greenhouse gases in the atmosphere has become a subject of public concern. Carbon dioxide (CO2) is widely considered as the predominant contributor of greenhouse gases. The post combustion CO2 capture technology is one of the commonly used technologies for dealing w...

The application of the post combustion CO2 capture technology in the industry, a large amount of research need to be addressed in order to decrease the cost. The purpose of the pilot plants or demonstration plants is to find the issues which may not observed in the fundamental research. Another purpose of this study is to confirm the stimulation of...

This project study involves the techno-economic assessment of two new advanced configurations for amine-based carbon dioxide capture from a pulp mill. The newly proposed advanced configurations include advanced rich amine four split (ARA4S), and advanced rich amine three split with desorber inter-heating (ARA3S-DI) which is aimed at reducing carbon...

In this paper, the thermodynamic phase behaviour of pure and mixing nanoconfined fluids in shale reservoirs are studied. First, an analytical generalized equation of state (EOS) is developed by including the effects of pore radius and intermolecular interactions. Based on the generalized EOS, four extended cubic EOS are proposed and used to calcula...

ABSTRACT The intensive energy penalty for amine solvent regeneration in the absorption/desorption process considered one of the major obstacles of this technology. Therefore, a series of a super solid acid catalyst (SO 4 2- /SnO 2 , SO 4 2- /ZrO 2 , and mesoporous silica Kit-6) were synthesized and studied separately to investigate their eff...

The intensive energy penalty for amine solvent regeneration in the absorption/desorption process considered one of the major obstacles of this technology. Therefore, a series of a super solid acid catalyst (SO 4 2- /SnO 2 , SO 4 2- /ZrO 2 , and mesoporous silica Kit-6) were synthesized and studied separately to investigate their effectiveness...

In this study, the performance of carbonated water injection (CWI) as a means of secondary oil recovery process was investigated. A series of flooding experiments were carefully designed and conducted in two state-of-the-art micromodels representing single and dual permeability porous media. The dual permeability micromodel is referring to a model...

To figure out the steric hindrance and its magnitude effects on CO2 absorption performance and Brønsted correlations of primary and secondary alkanolamines, the pKa values and kinetics data (second order reaction rate, k2) were investigated for nine alkanolamines at 293–313 K using pH meter and stopped-flow technique. The tested amines include mono...

The mechanism was proposed of heterogeneous catalytic CO 2 absorptions with primary/secondary amines involving 'catalytic carbamate formation'. Compared with the non-catalytic 'Zwitterion mechanism', this Eley-Rideal model was proposed for CO 2 þ RR 0 NH with MCO 3 (M ¼ Ca, Mg, and Ba) with four elementary reaction steps: (B1) amine adsorption, (B2...

The high energy consumption of CO2-loaded amine solvent regeneration is the biggest impediment for the real application of the amine-based CO2 capture process. To lower the energy requirement, three Fe promoted SO42-/ZrO2 supported on MCM-41 catalysts (SZMF) with different iron oxide content (5%, 10% and 15%) were synthesized and applied for the ri...

1‐(2‐Hydoxyethyl)‐piperidine (1‐(2HE)‐PP) is a new tertiary amine with desirable properties and can be potentially used to formulate superior absorbents for CO2 capture. The equilibrium CO2 solubility of 1‐(2HE)‐PP solution is measured over temperatures from 298 to 333 K, CO2 partial pressures from 8.1 to 101.3 kPa and initial amine concentrations...

This work investigates the carbon dioxide (CO 2 ) equilibrium solubility of seven novel tertiary amines, which include 1-(2-Hydroxyethyl)pyrrolidine (1-(2-HE)PRLD), 4-((2-hydroxyethyl)(ethyl)amino)-2-butanol (HEEAB), 3-diethylamino-1,2-propanediol (DE-1,2-PD), 4-(dipropylamino)-2-butanol (DPAB), 1-(2-Hydroxyethyl)-piperidine (1-(2-HE)PP), 4-((2-hyd...

Studies of catalytic CO2 absorption and desorption were completed in two well-performed tertiary amines: diethylmonoethanolamine (DEEA) and 1-dimethylamino-2-propanol (1DMA-2P), with the aid of CaCO3 and MgCO3 in the absorption process, and with the aid of γ-Al2O3 and H-ZSM-5 in the desorption process. The batch process was used for CO2 absorption...

The solubility constant of N 2 O in aqueous 1-dimethylamino-2-propanol (1DMA2P) solution in the concentration range of 0–3.0 mol/L was measured over the temperature range of 298–333 K, and the data used to fit existing models: Redlich-Kister, semi-empirical, and polynomial. A new model has also been developed to predict the solubility constant. Als...

The extensive energy penalty of CO2-loaded solution regeneration is one of the most crucial challenges facing industrial application of amine-based CO2 capture technology. Here, to decrease the energy requirement, the regeneration behaviors of the rich 5 M monoethanolamine (MEA) and 3 M MEA-2.5 M N-methyl-diethanolamine (MDEA)−0.5 M piperazine (PZ)...

Reduction of carbon dioxide emission from natural and industrial flue gases is paramount to help mitigate its effect on global warming. Efforts are continuously deployed worldwide to develop efficient technologies for CO2 capture. The use of environment friendly amino acids as rate promoters in the present amine systems has attracted the attention...

This research is a bench-scale pilot plant investigation of novel amine solvent blend containing MDEA and 1,5-diamino-2-methylpentane (DA2MP) for CO2 capture from water-gas shift process plant (H2 production). The CO2 concentration used in this study (50 vol.% CO2 with N2 balance) is similar to that of the water-gas shift product gas. The CO2 captu...

An extensive experimental study was performed to investigate the effect of various parameters such as temperature, pressure, and crude oil API gravity on the fluid interactions in the binary systems of brine‐CO2 and two heavy oil‐CO2 systems. The solubility of CO2 in 20 000 ppm brine solution was measured at various experimental conditions. The sol...

An accurate and reliable estimation of minimum miscibility pressure (MMP) of CO2–oil system is a critical task for the design and implementation of CO2 miscible displacement process. In this study, an improved CO2–oil MMP correlation was developed to predict the MMP values for both pure and impure CO2 injection cases based on ten influential factor...

This experimental study covered pilot plant analysis of novel AMP and 1,5–diamino–2–methylpentane (DA2MP) amine solvent blend for CO2 capture from a lime kiln. The gas flow rate (F(GAS)), amine solution flow rate (F(amine)), CO2 concentration and reboiler temperature (T(REB)) were kept at 14 SLPM, 50 mL/min, 30 vol.% CO2 (N2 balance) and 120 °C res...

In this work, four bifunctional Al2O3/HZSM-5 catalysts (Al-ZSM) were prepared and characterized with various techniques. The regeneration behaviors of a 5 M monoethanolamine (MEA) solvent with four Al-ZSM catalysts were studied at an initial CO2 loading of 0.5 mol CO2/mol amine and the temperature of 96 °C. The results reveal that all the catalysts...

In the present work, artificial neuron network (ANN) based models for predicting equilibrium solubility and mass transfer coefficient of CO2 absorption into aqueous solutions of high performance alternative 4-diethylamino-2-butanol (DEAB) solvent were successfully developed. The ANN models show an outstanding predictive performance over the predict...

This research covered the rate-based process simulation (ProMax® 4.0) and techno-economic analysis of carbon dioxide (CO2) capture from a 1.2 million metric tonne per annum cement plant using aqueous 2 kmol/m3 AMP-1 kmol/m3 PZ-2 kmol/m3 MEA blend. The waste gas composition for this study was provided by a cement plant from Quebec, Canada. The effec...

This study used ProMax® 4.0 process simulator (rate–based model) to conduct a parametric sensitivity of carbon dioxide (CO2) capture from a 115 MW coal–fired power plant (Boundary Dam 3 power plant) using monoethanolamine (MEA) and diethanolamine (DEA) blend. Saskatchewan Power Corporation (SaskPower), Canada provided the flue gas composition used...

In this work, the composite catalysts, SO42/ZrO2/γ-Al2O3 (SZA), with different ZrO2 and γ-Al2O3 mass ratios were prepared and used for the first time for the carbon dioxide (CO2)-loaded monoethanolamine (MEA) solvent regeneration process to reduce the heat duty. The regeneration characteristics with five catalysts (three SZA catalysts and two paren...

Bench-scale pilot plant study of AMP and 1,5-diamino-2-methylpentane (DA2MP) blend for CO2 capture from gas-fired power plant is investigated. The concentration of the amine blend is 2 kmol/m3 AMP-1.5 kmol/m3 DA2MP while that of single solvent MEA is 5 kmol/m3. Comparative analysis was based on CO2 absorption efficiency (%), absorber mass transfer...

Heat duty reduction is the major challenge in CO2 desorption and amine regeneration. The use of a combination of heterogeneous catalytic desorption with improved amine solvents is a novel approach to address this issue. Research studied CO2 desorption tests of non-catalytic DEA (diethylamine) solvents as benchmark, and focused on 5 blended amines D...