Enhancement of carbon dioxide capture by amine‐modified rice husk mesoporous material

Abstract

Carbon dioxide capture and sequestration (CCS) has become a promising mitigation measure to reduce carbon dioxide (CO2) emissions from large stationary point sources. The CO2 capture process is the core limitation in terms of operating costs and energy consumption. To address this problem, this work aims to produce low cost solid sorbents for capturing CO2. Rice husk was used as a silica source for Mobil Composition of Matter No. 41 (MCM‐41) synthesis (called R‐MCM‐41). To enhance the CO2 adsorption performance at a high temperature, polyethyleneimine (PEI), monoethanolamine (MEA), and aniline (ANL) were applied as modification reagents onto the R‐MCM‐41 surface. The adsorption test was conducted by using an adsorption column. The results indicated that the adsorption capacity of R‐MCM‐41 decreased with an increase in adsorption temperature. However, amine modification can enhance the adsorption capacity at high adsorption temperatures. Out of all the materials tested, the R‐MCM‐41 impregnated with 50 wt % of PEI provided the highest adsorption capacity at 1.70 mmol g−1. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 1716–1723, 2016

Enhanced Carbon Storage Process from Flue Gas Streams Using Rice Husk Silica Nanoparticles: An Approach in Shallow Coal Bed Methane Reservoirs

“…The small peaks at 1056 and 808 cm −1 are associated with the symmetric and asymmetric bending and stretching vibration of Si−O−Si linkages. 47,81 The amine impregnated samples exhibit similar behavior with three bands at 1051 cm −1 , 958 cm −1 , and 798 cm −1 due to the bending vibration and the symmetric and asymmetric stretching vibration of Si−O−Si. 82 The band observed at 1707 cm −1 is related to the water molecules adsorbed on the surface of the silica structure.…”

“…The peak at 1618 cm –1 is due to the bending vibration of H–O–H, and the vibration mode at 478 cm –1 represents the Si–O bond. The small peaks at 1056 and 808 cm –1 are associated with the symmetric and asymmetric bending and stretching vibration of Si–O–Si linkages. , …”

“…For RSi doped with diethylamine, the peak centered at ∼3435 cm −1 attributed to −OH stretching and N− H stretching in DE became sharp. The peak band observed at 1625 cm −1 exhibits the characteristic absorption peak of secondary amines −N−(R)H. 47 In contrast, triethylamine functionalized samples displayed wider bands at 2885 and 2923 cm −1 associated with the symmetric and asymmetric stretching of −CH 2 −. The peaks at 1332 and 1485 cm −1 are the deformation swing absorption of the CH bond.…”

“…On the other hand, some research has established silica-modified nanomaterials such as amine-functionalized as ideal sorbents for selective separation of CO 2 from a mixture of gases due to their reversible reaction with CO 2 . The interaction between acidic CO 2 and other molecules as basic amine groups could increase the CO 2 uptake, enhancing their sorption capacity, which have been widely studied in the scientific literature in the capture process. − Although the silica nanomaterials developed in the literature mentioned above were not applied to carbon storage in reservoirs of sandstone and CBM, these tunable characteristics have great potential to be involved in this kind of process and, additionally, to promote an environmentally friendly process with a minor footprint carbon. To the best of our knowledge, this is the first study using amine-functionalized biomass-derived silica nanoparticles to improve the chemical-physical properties of carbon bed methane to enhance its CO 2 selective sorption based on a CCS process.…”

Recent Advances in Carbon Dioxide Sequestration in Deep Unmineable Coal Seams Using CO2-ECBM Technology: Experimental Studies, Simulation, and Field Applications

“…However, most of the researchers developed nanomaterials for the carbon capture and separation process toward carbon sequestration. − It is recommended to develop nanomaterials specifically to enhance CO 2 sequestration in CBM for shallow and deep reservoirs.…”