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Al Sabagh AM, Abdel-Hamid TM, Abdel-Salam FH, Noor El-Din MR, Mohamed A. Surface activity and thermodynamic properties of some green surfactants from wastes in formation water at reservoir conditions. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1842755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. M. Al Sabagh
- Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
- Enhanced Oil Recovery Unit (EOR), EPRI, Nasr City, Cairo, Egypt
| | - Tahany Mahmoud Abdel-Hamid
- Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
- Enhanced Oil Recovery Unit (EOR), EPRI, Nasr City, Cairo, Egypt
| | | | - Mahmoud R. Noor El-Din
- Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
| | - Asmaa Mohamed
- Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
- Enhanced Oil Recovery Unit (EOR), EPRI, Nasr City, Cairo, Egypt
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Han W, Hou M, He F, Zhang W, Shi B. Ecotoxicity and interacting mechanism of anionic surfactant sodium dodecyl sulfate (SDS) and its mixtures with nonionic surfactant fatty alcohol-polyoxyethlene ether (AEO). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2020; 222:105467. [PMID: 32208300 DOI: 10.1016/j.aquatox.2020.105467] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 02/20/2020] [Accepted: 03/07/2020] [Indexed: 06/10/2023]
Abstract
This paper reports the proportion-dependent toxicity of binary surfactant mixtures containing anionic sodium dodecyl sulfate (SDS) and nonionic fatty alcohol-polyoxyethlene ether (AEO) toward Photobacterium phosphoreum. The crucial role of toxicity interactions was elucidated by spectroscopic probing the refolding of the unfolded bovine serum albumin (BSA) induced by SDS and theoretical calculating the interaction parameter of mixed surfactants based on Rubingh's model from the critical micelle concentrations. The SDS/AEO mixtures can be divided into two groups based on the toxicity response to the proportion of AEO in the mixtures: Group I contained low mass proportions of AEO, that is, SDS:AEO = 4:1, 3:1; Group II featured high AEO proportions, that is, SDS:AEO = 3:2, 1:1, 2:3, 1:4. The toxicity of SDS/AEO mixtures decreased with the enhanced proportion of AEO in Group I and then fluctuated slightly when the AEO proportion increased to that of Group II. The mixture with the mass ratio of 1:1 showed a slightly higher toxicity than the others in Group II. Scanning electron microscopy (SEM) images illustrated that the addition of AEO hindered the action of SDS against the cell membrane. Fluorescence measurement indicated that AEO could extract SDS molecules embedded in the BSA matrix, except for those bound to the highly active sites of BSA, and refold stepwise the unfolded protein. The results were in excellent analogy to the proportion-dependent toxicity of SDS/AEO mixture, indicating the formation of mixed micelles playing a key role. The interaction parameter further revealed that antagonism led to the mixture with equal mass ratio (1:1) showing higher toxicity than other mass ratios in Group II. These results can be useful for compounding SDS/AEO mixtures in application efficiently and eco-friendly.
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Affiliation(s)
- Weimo Han
- The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610065, China; National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Mengchun Hou
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Faming He
- The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610065, China; National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Wenhua Zhang
- The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610065, China; National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, Sichuan, 610065, China.
| | - Bi Shi
- The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, Sichuan, 610065, China; National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, Sichuan, 610065, China
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