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Srinam N, Mohdee V, Pancharoen U, Nootong K, Maneeintr K, Punyain W, Chunsawang S. Application of green solvents for arsenic removal from petroleum produced water: Statistical, DFT and McCabe-Thiele determination. Heliyon 2024; 10:e36072. [PMID: 39253147 PMCID: PMC11382183 DOI: 10.1016/j.heliyon.2024.e36072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/04/2024] [Accepted: 08/08/2024] [Indexed: 09/11/2024] Open
Abstract
This work presents the novel application of green oils to extract arsenic ions from petroleum produced water via liquid-liquid extraction (LLE). In the experiment, the removal of arsenic ions from synthetic petroleum produced water is investigated, using five green oils: canola oil, corn oil, linseed oil, rice bran oil, and sunflower oil, in place of petroleum-based solvents: toluene and kerosene. Both extraction and stripping optimizations are examined. For extractants, Aliquat 336 and Cyanex 921 are implemented. The initial arsenic concentration (3.984 mg L-1) of petroleum produced water is examined. Results demonstrate that Aliquat 336 in corn oil proved to be most effective for arsenic removal. At optimal conditions via response surface methodology (RSM), the highest extraction and stripping percentages reached 99.95 % and 100.00 %, respectively. In accordance with the World Health Organization (WHO) levels of ≤0.01 mg L-1, arsenic concentration remaining in the extracted water (0.002 mg L-1), is seen to fulfill the requirement needed. The extraction and stripping kinetics are of first and second-order. Mechanisms of arsenic removal are evaluated via density functional theory (DFT). Further, selectivity, recycling of the organic phase, and the number of stages via McCabe-Thiele theory are determined under optimal conditions.
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Affiliation(s)
- Natthawan Srinam
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Vanee Mohdee
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Ura Pancharoen
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Kasidit Nootong
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Kreangkrai Maneeintr
- Department of Mining and Petroleum Engineering, Faculty of Engineering, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
- Carbon Dioxide Capture, Transportation, Subsurface Utilization and Storage Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Wikorn Punyain
- Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand
| | - Sirikul Chunsawang
- Department of Chemical Engineering, College of Engineering, Rangsit University, Pathum Thani, 12000, Thailand
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