Zhao Junxiong, Yang Yan, Li Huirui, Xu Shengchao, Wei Qifeng, Ren Xiulian
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.
iScience. 2023 Mar 23;26(4):106472. doi: 10.1016/j.isci.2023.106472. eCollection 2023 Apr 21.
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, CHNO) 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 SO, NO, and NOx were 97.10%, 75.41%, and 74.28%, respectively. The synergistic effect of HCO /CO and BAD was shown to further restrict NO escape.
船舶排放对环境的影响不容忽视，应加以控制。利用各种海水资源充分证实了应用海水电解技术和新型酰胺吸收剂（BAD，CHNO）对船舶废气进行同步脱硫脱硝的可能性。高盐度的浓缩海水（CSW）可有效降低电解过程中产生的热量以及氯的逸出。吸收剂的初始pH值会极大地影响系统的NO去除能力，而BAD能够长时间保持系统中适合NO氧化的pH范围。使用新鲜海水（FSW）稀释浓缩海水电解产物（ECSW）以制成水性氧化剂是更合理的方案；SO、NO和NOx的平均去除效率分别为97.10%、75.41%和74.28%。结果表明，HCO/CO与BAD的协同作用进一步抑制了NO的逸出。
