eprintid: 14677 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/01/46/77 datestamp: 2023-11-10 03:29:16 lastmod: 2023-11-10 03:29:16 status_changed: 2023-11-10 01:57:32 type: article metadata_visibility: show creators_name: Tackie-Otoo, B.N. creators_name: Atta, D.Y. creators_name: Ayoub Mohammed, M.A. creators_name: Otchere, D.A. title: Investigation into the Oil Recovery Process Using an Organic Alkali-Amino Acid-Based Surfactant System ispublished: pub keywords: Adsorption; Critical micelle concentration; Emulsification; Enhanced recovery; Ethanolamines; Floods; Micelles; Oil well flooding; Sodium Carbonate; Sulfur compounds; Wetting, Amino acid-based surfactants; Critical micelle concentration (cmc); Enhanced oil recovery; Langmuir-type adsorption; Oil recovery process; Original oil in places; Surfactant concentrations; Wettability alteration, Sodium dodecyl sulfate note: cited By 8 abstract: The development of combinatory flooding has evolved over the years to utilize the synergies that come into play upon combining more than one chemical agent in a chemical flooding process. This study focuses on investigating the synergies that exist in combining monoethanolamine (ETA) and sodium cocoyl alaninate (SCA) as an alkali-surfactant (AS) formulation for the enhanced oil recovery process. A conventional formulation made of sodium carbonate (Na2CO3) and sodium dodecyl sulfate (SDS) was used for a comparative purpose. The proposed formulation proved to be compatible with the prepared hard brine. The ETA-SCA combination proved superior to Na2CO3-SDS in interfacial tension (IFT) reduction and wettability alteration. Addition of ETA to SCA synergistically reduced IFT to a low value of 4.73 � 10-2 mN/m at a surfactant concentration lower than the critical micelle concentration (CMC). ETA also played a synergistic role in improving the wetting power of SCA on quartz surface. The formulation also showed a high emulsifying ability owing to its superior IFT reduction capability. Static adsorption studies showed SCA to exhibit Langmuir-type adsorption behavior similar to SDS. The adsorption of SCA onto a sand surface was favorable, but ETA proved to reduce adsorption of SCA effectively at 0.3 wt . The ETA-SCA and Na2CO3-SDS systems achieved additional oil recoveries of 31 and 25 original oil in place (OOIP) over conventional core flooding, respectively. The proposed AS formulation, therefore, showed better recovery potential in addition to its environmentally friendly nature. © 2021 American Chemical Society. date: 2021 publisher: American Chemical Society official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110963067&doi=10.1021%2facs.energyfuels.1c00551&partnerID=40&md5=e02ce66eabace1da648d29e630a21e44 id_number: 10.1021/acs.energyfuels.1c00551 full_text_status: none publication: Energy and Fuels volume: 35 number: 14 pagerange: 11171-11192 refereed: TRUE issn: 08870624 citation: Tackie-Otoo, B.N. and Atta, D.Y. and Ayoub Mohammed, M.A. and Otchere, D.A. (2021) Investigation into the Oil Recovery Process Using an Organic Alkali-Amino Acid-Based Surfactant System. Energy and Fuels, 35 (14). pp. 11171-11192. ISSN 08870624