SusFil: Sustainable Filtration - Multifunctional nonwoven layers to achieve efficient and sustainable filtration solutions allowing cost-effective processing of compressed air for industrial processes

L. Sinowzik*, Saxon Textile Research Institute (STFI); W. Mölter-Siemens, Institute for Energy and Environmental Technology e.v. (IUTA), Germany

Main goal of the BMBF joint project "SusFil" were the development of multifunctional nonwoven layers to be used in air filter elements and energetic optimization of the compressed air cleaning process. Filament nonwoven fabrics to be used in pre-filtration and fine fiber nonwoven fabrics (meltblown) for fine filtration were developed as filter media. Carbon nanotubes (CNTs) of about 10 nm in diameter were used to functionalize the filter layers. CNTs have several filtration-relevant properties, such as large effective surfaces, good catalytic effects, very high thermal conductivity, electrical conductivity, extreme elasticity and antibacterial efficacy. One major challenge in the project was the integration of the CNTs via additives directly into the fiber matrix. Beside functional properties such as hydrophilicity / hydrophobicity, oleophobia, conductivity and electret properties, important criteria for evaluation of filter media are the air permeability / pressure difference (operating costs) and the degree of separation (compressed air quality). The results are...

Session: G11 - Short Oral + Poster Presentations II
Day: 14 March 2018
Time: 14:45 - 16:45 h

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