CO2 sorption using functionalized clays as solid sorbents

Carbon dioxide (CO2) emissions are one of the leading causes of the increase in greenhouse gases responsible for global warming. Its colossal increase in the atmosphere is mainly due to the burning of fossil fuels, which has significantly impacted the climate. Nowadays, solid sorbents, such as amine-functionalized clays, offer a promising alternative for CO2 capture. This work focuses on carrying out an adsorption study with sorbent solids, such as industrial usage clays and artisanal usage clays, from the province of Imbabura, Ecuador. The operation conditions of this study are high pressure (initial pressure: 500 psig) and room temperature (25◦C), in a non-stirring system. The capacity to capture CO2 was evaluated, considering solid sorbents without functionalization and with functionalization. Based on this, functionalized artisanal usage clays presented better results in CO2 sorption compared to industrial usage clays. In addition, characterization studies of the simples were carried out using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA) to determine physical-chemical properties, crystalline phases present in the samples and study of the functional groups. Finally, an economic study was conducted to analyze the feasibility and profitability of implementing a large-scale system with a bed of functionalized clays for capturing CO2 from the natural gas stream from Block 56 of Lago Agrio in the Ecuadorian Amazon region.

• Автор: Narváez Pistala, Jennifer Lisbeth (author)
• Формат: bachelorThesis
• Мова: eng
• Опубліковано: 2025
• Предмети: Captura de CO2; Adsorción; Sorbentes sólidos; CO2 capture; Adsorption; Solid sorbents
• Онлайн доступ: http://repositorio.yachaytech.edu.ec/handle/123456789/926