Electrospun Nanofibrous Membranes for Water Treatment

Abstract

Nanofibrous structures offer a lot of fascinating features due to large specific surface area. This makes them promising for a wide range of applications, most specifically water treatment. This new generation of highly porous membranes exhibits great prospect to be used in various separation applications due to their distinguished features such as remarkably high porosity (≥90%) and interconnected 3D pore structure. As compared with the conventional techniques, Electrospinning has been highlighted for developing unique porous membranes. Electrospun nanofibrous membranes have been more and more investigated to a lot of advanced water treatment purposes. This chapter reviews the updates on electrospun nanofibrous membranes with a particular prominence in recent accomplishments, bottlenecks, and future perspectives in water treatment. To start, the basic principles of electrospinning are discussed. Next, past and recent efforts for fabricating electrospun MF membranes for various applications are reviewed. The application of electrospun nanofibers as the scaffold for TFC (thin-film composite) membranes in the pressure-and osmotic-membrane processes is then introduced. The new application of electrospun nanofibrous membranes for the thermally-driven MD (membrane distillation) process for water treatment as well as strategies for performance enhancement is discussed. To finish, conclusions and perspectives are stated according to recent developments.

Food Packaging Film Preparation: From Conventional to Biodegradable and Green Fabrication

“…In this way, biopolymers and green solvents have been proposed [57,58]. On the other hand, electrospinning technology has been widely investigated for the fabrication of nanofibrous membranes for water treatment [59] and more recently for the fabrication of food packaging materials [60]. PLA-based nanomaterials as well as active and intelligent packaging materials have been fabricated for food packaging applications by electrospinning with expected structures and enhanced barrier, mechanical, and thermal properties [39].…”

Evaluating the Volume Ratio Effect on Absorption Time of Polyvinyl Alcohol-Sodium Alginate Based Fiber Membranes as a Wound Dressing

“…This method makes it easier to process and control materials and structures, produces fibers down to the nanoscale, and the resulting morphology is more uniform. In addition, the electrospinning method is able to produce nanofiber membranes with good mechanical properties, high porosity above 90%, and a large surface area [2] . This membrane-shaped fiber has great potential for use in various applications, including as a wound dressing.…”

FABRICATION OF PVA/TiO2 NANOFIBERS BY ELECTROSPINNING METHOD AS PHOTOCATALYTIC DEGRADATIO

“…Then, the process parameters include the high voltage, the distance between the syringe to the collector, and the pressure of the syringe pump. Then control parameters which include temperature and humidity [10]. Therefore in this study, optimizing the electrospinning parameter, namely the voltage variation to produce the smallest fiber that is suitable for good and maximum absorption applications.…”