Kinetics of CO2 capture by novel amine-functionalized magnesium oxide adsorbents

The increase in the concentration of carbon dioxide (CO2) gas in the atmosphere has led to various severe negative consequences. There are numerous methods for the reduction of CO2 that have been introduced such as chemical and physical absorption, organic liquid scrubbing, amine-based absorption, etc. Adsorption by using solid adsorbents is one of the promising methods that has been widely studied by researchers. The performance of the adsorbents can be enhanced by functionalized with diverse types of promoters. This review is discussing the performance of polyethyleneimine (PEI) as a promoter towards the adsorption of CO2. To achieve high effective PEI-adsorbents, the percentage of PEI amine loading, type of porous support, temperature, and different flow conditions are among the important parameters that need to be considered. The chemical stability of PEI can be improved through modification crosslinking of PEI. Hence in this review, the effect of amine loading, porous support, temperature, slow condition and crosslinking of PEI to its CO2 adsorption performance is observed.

Section: 3effect Of Adsorption Temperaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Amine (Polyethyleneimine)-modified solid adsorbent for CO₂ capture

Rani

Hitam

Taib

2022

“…However, several drawbacks related to amine utilization such as high energy consumption during the regeneration process, corrosive nature, etc. have restricted its widespread applications [2]. The previous studies have revealed that this issue could be reduced via the incorporation of various solid adsorbents [3].…”

Section: Introductionmentioning

confidence: 99%

“…(3-aminopropyl) triethoxysilane (APTES)) functionalized on numerous solid adsorbents such as metal oxides (e.g. MgO) [4], zeolites [5], SBA-15 silica [6], MOFs, etc. As one of the potential amines, APTES-functionalization was usually achieved via the grafting method.…”

Section: Introductionmentioning

confidence: 99%

Recent progress on (3-Aminopropyl)triethoxysilane (APTES) functionalized-adsorbent for CO2 capture

Sim

Ruhaimi

2022

The increasing emission of carbon dioxide (CO2) to the atmosphere has gained worldwide concern due to its main contribution to climate changes, global warming, and the greenhouse effect. Numbers of technologies have been carried out to remove this hazardous gas from the environment such as absorption, adsorption, membrane separation, cryogenic separation, and the biological process. Due to limitation of the current absorption technique, CO2 adsorption technique using porous solid adsorbents seems to be a potential candidate in capturing CO2. This is due to the advantages such as low regeneration energy requirements, no liquid waste and low cost. Furthermore, amine functionalization such as APTES on solid adsorbents has been progressively study for the usage of enhancing CO2 adsorption. The uses of adsorbents that modified with APTES could enhance the CO2 adsorption performance due to the chemisorption of -NH2 bond from the amine that further improve the CO2 adsorption performance in terms of the CO2 uptake and selectivity. Besides that, functionalization of APTES on adsorbent will also greatly enhance the reactivity towards CO2. In this review, the impact of the diverse amine loadings on different adsorbents and the type of solvent used for APTES-functionalization towards CO2 capture performance was thoroughly elaborated. The suitable reaction conditions and the regenerability of the adsorbents that could significantly affect their CO2 adsorption capacity were also discussed in detail. Other than distributing useful knowledge on the current progress of the APTES-functionalization adsorbents, this review is anticipated to provide benefit for the industrial and academic usage and appeal more attention in this fascinating area of CO2 capture.

“…Kamran and Park have stated that the amount of CO2 in the atmosphere has increased from 280 to 410 ppm as the world temperature has risen from 273.6 to 274 K (3). A study conducted by Alkadhem and co-workers has demonstrated that the average Earth temperature will rise by about 274.5 K in this century (4). It is anticipated that the environment and the lives of many species will be adversely impacted if the global warming problem remains severe for the next few decades.…”

Section: Introductionmentioning

confidence: 99%

A brief on tetraethylenepentamine (TEPA) functionalized-adsorbents in CO₂ capture application

Tan

Ruhaimi

Hitam

et al. 2022

Among numerous carbon capture technologies, adsorption is considered one of the most effective approaches to reduce carbon dioxide (CO2) emissions in the atmosphere. Various modification approaches of adsorbents have been introduced to enhance the CO2 adsorption ability. Recently, an amine such as tetraethylenepentamine (TEPA) has been extensively used as an adsorbent’s promoter because of its high amine density, low viscosity, low cost, and low toxicity properties. This has added an advantage to the adsorbent in terms of economical and environmentally benign. Therefore, it is important to provide the latest review on TEPA-functionalized adsorbents, specifically on the effects of TEPA functionalization, different TEPA loading, diverse adsorption conditions, as well as the structure of adsorbents towards the CO2 adsorption capacity. Different adsorption conditions over a wide range of adsorption temperatures were thoroughly discussed and several recommendations for future studies were also been proposed.