Browsing by Keyword "Membrane technology"
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Item Membrane optimization and process condition investigation for enhancing the CO2 separation from natural gas(Elsevier, 2018-01-01) Llosa Tanco, Margot A.; Medrano, Jose A.; Gallucci, Fausto; Pacheco Tanaka, David A.; TECNOLOGÍA DE MEMBRANAS E INTENSIFICACIÓN DE PROCESOSThis chapter provides an overview of both conventional membrane process technologies and optimization of membrane process technologies for CO2 separation from natural gas. Among other natural gas processing operations, removal of CO2 is required to meet gas specification, typically 2% CO2 for pipeline quality gas. The use of CO2-selective membrane technologies for bulk separation of methane is increasing in the natural gas industry. CO2-selective membranes represent a more efficient alternative for CO2 separation, as in this case the separation does not undergo any phase change. The economics of the process, simple operation, and the use of compact modules have led to an increasing exploration of membrane technology for CO2 separation in the natural gas industry over competing separation technologies. This chapter presents an overview of different CO2-selective membranes for the separation of CO2 from natural gas. In particular, the recent significant advances (from 2010) reported in the literature on various CO2-selective membranes, their stability, the effect of different parameters on the performance of the membranes, the relationships between structure and permeation properties, and the transport mechanism applied in different CO2-selective membranes are summarized. Finally, the future direction for CO2-selective membranes is suggested.Item Membranes utilization for biogas upgrading to synthetic natural gas(Elsevier, 2019-01-01) Medrano, Jose Antonio; Llosa-Tanco, Margot Anabell; Tanaka, David Alfredo Pacheco; Gallucci, Fausto; TECNOLOGÍA DE MEMBRANAS E INTENSIFICACIÓN DE PROCESOSThe use of membranes for selective CO2 separation from biogas, also commonly known as biogas upgrading, is reviewed in this chapter. Nowadays, compared to other well-established technologies such as pressure swing adsorption (PSA), or scrubbing, membrane technology has not found large industrialization for biogas upgrading because of the current limitations of polymer-based materials. Despite these limitations, membrane technology has a great potential for selective CO2 separation because the separation mechanism is the simplest among all technologies. Furthermore, the costs of membrane fabrication and subsequent operation are rather low, thus making membrane technology an interesting alternative for upcoming biogas upgrading plants. The current efficiency of membrane technology in biogas upgrading systems is lower compared to conventional technologies, and therefore current research is focused on the development of improved membranes with higher selectivity and CO2 fluxes per membrane area. In this chapter, the state of the art of the membrane technology and the recent developments of novel membrane materials are given, and the future trends and economics of the technology summarized.