推进水处理可持续性:研究电气化Ti3C2Tx复合膜,以尽量减少微塑料污染
Mariam Ouda1, Ravi P Pandey1, Fawzi Banat1
1Center for Membranes and Advanced Water Technology (CMAT), Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates; Department of Chemical Engineering, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates.
Chemosphere
|September 21, 2023
概括
这项研究引入了由硫化聚乙硫 (SPES) 和MXene (Ti3C2Tx) 制成的新型复合膜,用于打击水处理中的微塑料 (MP) 污染. 电气化膜有效降低了MP粘附和改善了水流,为水污染提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 微塑料 (MP) 污染是一个日益严重的全球问题,严重影响水体和处理设施.
- 微塑料在超过 (UF) 等低压膜技术中造成严重污染,扰乱了水处理过程.
- 现有的水处理方法难以有效地去除微塑料,需要创新的解决方案.
研究的目的:
- 开发和评估用于减轻水处理中的微塑料污染的新型复合膜.
- 为了研究含有MXene (Ti3C2Tx) 的电气化膜的功效,以提高抗污染性能.
- 为了优化硫化聚硫 (SPES) /MXene复合膜在不同电位下的性能.
主要方法:
- 用于制造SPES/MXene (Ti3C2Tx) 复合膜.
- 在不同应用电位 (0-2 V) 下评估膜性能.
- 测试间歇性电压应用 (30分钟开启:60分钟关闭) 以减轻污染.
- 对归因于静电排斥和in-situ凝固剂形成的水流和污垢减少的分析.
主要成果:
- 该SPES/Ti3C2Tx复合膜的导电性和防腐能力得到了改善.
- 由于静电排斥,水流从0V的42 L m−2 h−1增加到2V的49 L m−2 h−1以5重%的Ti3C2Tx,增加到2V的49 L m−2 h−1.
- 间歇性电压应用 (30分钟开启:60分钟关闭) 通过现场凝固剂形成和清洗保持稳定的水流.
结论:
- 在水处理中,SPES/MXene复合膜具有显著的减轻微塑料污染的潜力.
- 电气化膜提供了一个有前途的策略,以提高基于膜的净水系统的性能和寿命.
- 这项研究为开发先进的膜材料铺平了道路,以应对微塑料污染的挑战.
相关概念视频
Microbial Wastewater Treatment
Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
Microbial Fuel Cells
Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...
Biological Treatment of Effluent and Waste Water
Biological wastewater treatment relies on the metabolic activity of microorganisms to remove pollutants from sewage. In modern treatment systems, this process is organized into sequential stages that progressively reduce solid material, dissolved organic matter, and microbial contamination. Each stage plays a distinct role in improving water quality and preparing the effluent for safe discharge or reuse.Primary and Secondary TreatmentPrimary treatment is a physical process that removes large...
Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...


