ABSTRACT This research uses tap water to absorb carbon dioxide from mixed gas (N2 and CO2) in an absorption apparatus coupled with a water-film-forming-unit (WFFU). The objective is to assess the benefits of using a WFFU to enhance CO2 removal efficiency at low pressure conditions. Based on our results, the WFFU significantly improves CO2 capture at 0.30 MPa in a water absorption system with two WFFUs. The CO2 removal efficiency was 20% greater than for systems without WFFUs. Moreover, statistical data attained by the Taguchi analysis method showed that the number of WFFUs used in the absorption system has the greatest influence on CO2 removal efficiency (contribution percentage = 50.65%) compared to gas pressure, initial CO2 concentration, gas-to-liquid ratio, and liquid temperature. We also thoroughly investigated the effects of these factors on CO2 removal performance. The optimum conditions for CO2 removal efficiency in a system equipped with two WFFUs are low temperature, low gas-to-liquid ratio, low gas pressure (0.25–0.30 MPa), and high inlet CO2 concentration. These findings could provide an effective method for capturing CO2 from exhaust gases, and thus help mitigate global warming. GRAPHICAL ABSTRACT

中文翻译：

---

水成膜装置对吸水装置强化脱除混合气中二氧化碳的影响

摘要 本研究使用自来水在与水膜形成单元 (WFFU) 耦合的吸收装置中从混合气体（N2 和 CO2）中吸收二氧化碳。目的是评估使用 WFFU 在低压条件下提高 CO2 去除效率的好处。根据我们的结果，WFFU 在具有两个 WFFU 的吸水系统中显着提高了 0.30 MPa 的 CO2 捕获。CO2 去除效率比没有 WFFU 的系统高 20%。此外，通过田口分析法获得的统计数据表明，与气体压力、初始 CO2 浓度、气液转化率相比，吸收系统中使用的 WFFU 数量对 CO2 去除效率的影响最大（贡献百分比 = 50.65%）比例和液体温度。我们还彻底研究了这些因素对 CO2 去除性能的影响。配备两个 WFFU 的系统中 CO2 去除效率的最佳条件是低温、低气液比、低气压 (0.25-0.30 MPa) 和高入口 CO2 浓度。这些发现可以提供一种从废气中捕获二氧化碳的有效方法，从而有助于缓解全球变暖。图形概要