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Zhao J, Yang Y, Li H, Xu S, Wei Q, Ren X. The application of two-phase composite absorbent systems consisting of BAD and seawater resources in the wet treatment of ship exhaust gas. iScience 2023; 26:106472. [PMID: 37096040 PMCID: PMC10121448 DOI: 10.1016/j.isci.2023.106472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/20/2023] [Accepted: 03/17/2023] [Indexed: 04/26/2023] Open
Abstract
The impact of ship emissions on the environment cannot be ignored and should be controlled. The possibility of applying seawater electrolysis technology and a novel amide absorbent (BAD, C12H25NO) to the simultaneous desulfurization and denitrification of ship exhaust gas is entirely confirmed by using various seawater resources. Concentrated seawater (CSW) with high salinity can effectively reduce the heat generated during electrolysis and the escape of chlorine. The initial pH of the absorbent can greatly affect the NO removal capacity of the system, and the BAD could keep the pH range suitable for NO oxidation in the system for a long time. The use of fresh seawater (FSW) to dilute the electrolysis of concentrated seawater (ECSW) to make an aqueous oxidant is a more reasonable scheme; the average removal efficiencies of SO2, NO, and NOx were 97.10%, 75.41%, and 74.28%, respectively. The synergistic effect of HCO3 -/CO3 2- and BAD was shown to further restrict NO2 escape.
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Affiliation(s)
- Junxiong Zhao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, China
- Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, Shandong 264209, China
| | - Yan Yang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, China
- Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, Shandong 264209, China
| | - Huirui Li
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, China
- Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, Shandong 264209, China
| | - Shengchao Xu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, China
- Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, Shandong 264209, China
| | - Qifeng Wei
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, China
- Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, Shandong 264209, China
- Corresponding author
| | - Xiulian Ren
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, China
- Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, Shandong 264209, China
- Corresponding author
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Zhao J, Wei Q, Bi D, Liu L, Wang S, Ren X. A brand new two-phase wet oxidation absorption system for the simultaneous removal of SO 2 and NO X from simulated marine exhaust gas. CHEMOSPHERE 2022; 307:135830. [PMID: 35944677 DOI: 10.1016/j.chemosphere.2022.135830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/20/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Marine engine exhaust emissions are increasingly harmful to the natural environment and human health and must be controlled. A self-synthesized amide (BAD, C12H25NO) in the laboratory shows a strong absorption capacity of nitric acid and nitrous acid, which may solve the problem that only using chlorine-based oxidant as an absorbent cannot completely absorb or retain NO2 produced by NO oxidation in previous studies. Based on Multiwfn and VMD (Visual Molecular Dynamics) program calculation, the formation mechanism of hydrogen bonds between BAD with nitric acid and nitrous acid was revealed by electrostatic potential (ESP) analysis and further confirmed by FT-IR (Fourier transform infrared spectroscopy) spectra research. Subsequently, simultaneous removal of SO2 and NOX from simulated flue gas was carried out by using NaClO/BAD as a two-phase composite absorbent, and the maximum removal efficiencies of SO2 and NOX were 98.9% and 86.6%, respectively. The recycling experiments and the engineering experiments showing that NaClO/BAD can solve the problem of absorption of NO2, and it can be a promising composite absorbent in wet desulfurization and denitrification of marine engine exhaust gas in practical applications.
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Affiliation(s)
- Junxiong Zhao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, Shandong, China; Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, 264209, Shandong, China
| | - Qifeng Wei
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, Shandong, China; Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, 264209, Shandong, China
| | - Dongkui Bi
- Weihai Survey Station, China Classification Society, Weihai, 264209, Shandong, China
| | - Lijuan Liu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, Shandong, China; Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, 264209, Shandong, China
| | - Shanshan Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, Shandong, China; Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, 264209, Shandong, China.
| | - Xiulian Ren
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, Shandong, China; Shandong Institute of Shipbuilding Technology, Institute of Shipping Oil Residue and Oily Sewage Clean Technology, Weihai, 264209, Shandong, China.
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Jin J, Wang L, Yu Z, Sun W, Yang Z, Chen X, Liu G. Study on cooperative removal of NOx in simulated flue gas by paired electrolysis. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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