Surface functionalized waste-silk fabric engineered with polylactic acid & activated charcoal for oil/solvent recovery from oily wastewater |
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| Institution: | 1. Institute for Frontier Materials, Deakin University, Waurn Ponds Campus, Geelong, 3220, Victoria, Australia;2. Nano Surface Texturing Lab, Department of Metallurgical & Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune, 411025, India;3. Fiber Science and Technology, School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;1. Department of Chemistry, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India;2. Regional Ayurveda Research Institute, Ministry of Ayush, Gwalior, 474009, India;1. Department of Mathematics, College of Engineering and Technology, Srinivas University, Mangalore, 574146, India;2. Department of Mathematics, Bapuji Institute of Engineering & Technology, Davanagere, 577004, India;3. Department of Computer Science & Engineering, Bapuji Institute of Engineering & Technology, Davanagere, 577004, India;4. Department of Chemistry, College of Engineering and Technology, Srinivas University, Mangalore, 574146, India;1. University of Raparin, College of Science, Department of Physics, Sulaymaniyah, Iraq;2. Salahaddin University, Department of Physics, College of Education, Erbil, Iraq;1. Inorganic Materials Research Laboratory, Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar, Nigeria;2. Computational and Bio-Simulation Research Group, University of Calabar, Calabar, P.M.B 1115, Nigeria |
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| Abstract: | The present study reports using waste silk fabric functionalized using Polylactic acid (PLA) and Activated charcoal for oil/solvent recovery from simulated seawater (3.5% NaCl-based water). An average of 91% separation was visible in the functionalized waste silk fabric with an efficiency up to 20 cycles towards petroleum oils/solvents from simulated seawater. Further, the functionalized waste fabric showed hydrophobic properties with a water-based contact angle of 105° and oil/solvent absorption towards petroleum oils and organic solvent, with a surface free energy of 52.46 mN m−1. The functionalized waste silk also showed permeation flux of 658, 386, and 993 L m−2 h−1, for Petrol, Diesel, and n-Hexane, respectively. The results show that PLA/Activated-charcoal engineered waste silk can be effectively applied for practical oil/solvent recovery from simulated seawater. Utilizing waste silk fabric further supports in reducing the global carbon footprints as silk does not emit and/-or produce carbon dioxide due to its green origin and generating the circular economy approach. |
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| Keywords: | Silk fabric Polylactic acid (PLA) Hydrophobicity Surface functionalization Oil/solvent recovery Environmental remediation |
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