Bionic research : 3D textiles for aerosol separation / Jamal Sarsour in TECHNICAL TEXTILES, Vol. 65, N° 4 (10/2022)  

[article]  inTECHNICAL TEXTILES > Vol. 65, N° 4 (10/2022) . - p. 212-214 Titre : Bionic research : 3D textiles for aerosol separation Type de document : texte imprimé Auteurs : Jamal Sarsour, Auteur ; Benjamin Ewert, Auteur ; Thomas Stegmaier, Auteur ; Götz T. Gresser, Auteur Année de publication : 2022 Article en page(s) : p. 212-214 Langues : Multilingue (mul) Catégories : Aérosols Bionique Capteurs (technologie) Dépoussiérage Deshumidification Eau - Récupération Gaz de combustion -- Désulfuration Séparation (technologie) Structures tridimensionnelles Textiles et tissus à usages techniques Index. décimale : 677 Textiles Résumé : According to WasserStiftung, Munich/Germany, 1.2 billion people do not have safe access to a spring, well or piped system with clean water. In 2025, this numberwill rise to 2.3 billion people. No raw material is as important as water, and access to clean water is a human right. The fact that it is unequally distributed around the world leads to conflicts, which are exacerbated by increasing desertification as a result of climate change. The problem exists primarily in developing countries. There, centralized water supply systems are often not feasible for technical and logistical reasons, or connecting remote settlements, such as those on islands or at high altitudes, is uneconomical. Note de contenu : - Highly efficient : biological models - Bionic conversion to 3D structures for fog catchers - Industrial application examples for the 3D textiles FogHa-TiN : Dehumidifcation of process exhaust air from cleaning systems - Aerosol deposition/separation in flue gas desulfurization - Fine dust catcher in urban agglomeration En ligne : https://drive.google.com/file/d/1wVOErlI9LJ8ZGbZXc9Gb7NrUpRPufJTy/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38554 [article]

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Energy-efficient production of hydroentangled nonwovens in CHEMICAL FIBERS INTERNATIONAL, (10/2017)  

[article]  inCHEMICAL FIBERS INTERNATIONAL > (10/2017) . - p. 87-88 Titre : Energy-efficient production of hydroentangled nonwovens Type de document : texte imprimé Année de publication : 2017 Article en page(s) : p. 87-88 Langues : Anglais (eng) Catégories : Coût de production Eau - Récupération Economies d'énergie Nontissés Production Séchage Séchoirs Index. décimale : 677 Textiles Résumé : Hydroentanglement is one of the standard entanglement processes for nonwovens. Despite its undeniable advantages in production speed or related to special product properties (touch, softness, etc.), there is one significant downside : its huge energy consumption. In total, the energy consumption for hydroentangled nonwovens is typically in the range 01.2-2.5 kWh/kg - only for the entanglement part of the production line. While fiber costs still dominate the total costs of the product, the energy costs of hydroentanglement cause 40-50% of all other costs of such a production line (energy, depreciation, loan costs, maintenance etc.) and add up to, depending on product, € 1.5-2.5 million/year for a nonwovens line with a 2,000 kg/h production. Thus a reduction of these energy costs leads to a significant reduction of the production costs of hydroentangled nonwovens. Note de contenu : - Entangling - Drying - Square drum dryer SQ-V - Process water recovery system - Combined heat and power plant - FIGURES : 1. Water jet at a standard injector - 2. Standard injector - 3. V-Jet injector (Autefa solutions) - 4. HiPer Therm SQ-V dryer (Autefa Solutions) En ligne : https://drive.google.com/file/d/1UYThwepzzHELv4VZfA5FJdPl8C0PT6MR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29418 [article]

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Robust patterned superoleophobic platform for efficient water harvesting / Pan Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 6 (11/2023) . - p. 2019-2029 Titre : Robust patterned superoleophobic platform for efficient water harvesting Type de document : texte imprimé Auteurs : Pan Li, Auteur ; Chenyang Zhao, Auteur ; Shan Peng, Auteur Année de publication : 2023 Article en page(s) : p. 2019-2029 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Amphiphobie Brouillard Eau - Récupération Hydrophilie Morphologie (matériaux) Oléophobie Procédés de fabrication Index. décimale : 667.9 Revêtements et enduits Résumé : With the development of global industry and the increase of population, the shortage of freshwater resources has become a serious global challenge to the sustainable development of human society, prompting in-depth research on advanced water-harvesting technologies. However, the existing methods have many defects, such as easy pollution, insufficient water transportation speed, low water collection efficiency, complex preparation process, expensive raw materials, and so on. Here, inspired by natural organisms, such as beetles and cactus thorns, a new patterned surface combining a superamphiphobic region and a triangular fluorosurfactant (capstone FS50)-modified hydrophilic region has been designed for efficient and rapid water collection and condensation. The superamphiphobic part has an efficient water transmission capacity. On the one hand, owing to a good hydrophilic property, the FS50-modified part efficiently collects fog droplets that are further condensed into much larger water droplets. On the other hand, many large water drops condensed on the superamphiphobic region easily roll onto the hydrophilic FS50-modified surface, and form much larger droplets when combined with the original ones. The patterned surface achieves a very large water collection rate (WCR) of 20.6 mg min−1 cm−2, which is much larger than others reported in previous papers, while it is 1.5 and 1.3 times than that of single superamphiphobic and FS50-modified surfaces. Since both the patterns show superior oil repellency, it presents good resistance to organic pollution, resulting in very superior chemical stability and recyclability. Even after water collection for 60 cycles, the patterned surface can still reach a WCR value of 18 mg min−1 cm−2. The patterned surfaces also collect acid fog, alkali fog, and hot water fog when their WCR values are 20.1, 19.8, and 20.5 mg min−1 cm−2, respectively. This work has found a new patterned superoleophobic surface for efficient water collection, which achieves robust mechanical durability and chemical stability. Note de contenu : - MATERIALS AND METHODS : Materials - Fabrication methods of various samples - RESULTS AND DISCUSSION : Fabrication process of the patterned surface - Morphology and composition of the patterned surface - Wettability summary and demonstration of the patterned surface - Water collection processes of diverse samples - Various critical parameters about water collection capability of diverse specimens - Designed origin of patterned surface and mechanisms of water collection behaviors for diverse specimens - Mechanical durability and chemical stability of superamphiphobic surfaces - Acid fog, alkali fog, and hot water collection processes by the patterned surfaces - Table 1 : Summary of CAs and SAs of various samples DOI : https://doi.org/10.1007/s11998-023-00796-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00796-1.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40178 [article]

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