Nylon 6,6 Waste Nanofiber Membrane for Produced Water Filtration: Experimental, Performance Modelling, Optimization and Techno-Economic Analysis

Abstract

Produced water (PW) is a by-product of oil and gas extraction, of which it is deemed as the primary contributor of wastewater stream in oil production. Conventional treatment such as membrane separation is favoured due to its sustainability and cost effectiveness. On the other hand, oceanic litters such as abandoned fishing nets endangered the marine life ecosystem, despite of its potential to be raw material for fabrication of nanofiber membrane (NFM). This study explores the potential usage of electrospun nylon 6,6 waste NFM for treatment of real PW. In terms of modelling, it is found that feed concentration is the dominant factor with R2 of 0.94 for permeate concentration response and 0.91 for average flux response. Moreover, the optimized system with average flux of 216.5 L/m2h with low specific power consumption of ca. 0.09 kWh/m3 is proven to be economically feasible with less than 5% error from predicted model. As for technoeconomic analysis, it is found that permeate flux plays the major role in controlling total capital cost (CAPEX) and operating cost (OPEX) of the system. The lowest total CAPEX and OPEX to achieve 10 ppm of permeate concentration, also was found to be RM 3.7 M and RM/year 1660, hence proving the economic feasibility of the proposed system.

Facile Coaxial Electrospinning Synthesis of Polyacrylonitrile/Cellulose Acetate Nanofiber Membrane for Oil–Water Separations

“…Of all these methods, electrospinning stands as a straightforward and efficient process for producing polymerbased membranes with high porosity, desirable surface properties, and exceptional permeation rates [11]. Electrospinning technology enables the fabrication of nanofibers using a diverse range of materials, either natural or synthetic polymers, such as poly(vinylidene fluoride) (PVDF) [12], polyvinyl alcohol [13], nylon 6 [14], polyethylene glycol [15], polyacrylonitrile [15], and cellulose acetate (CA) [2]. CA is considered the most important organic ester of cellulose, an abundant polymer in nature [16][17][18][19].…”

Sustainable Nano‐Nonwoven Fabric Production from Recycled Polyamide 6 Waste via Electrospinning: Controlling Characteristics and Comprehensive Analytical Study

“…On the other hand, recycling polyamide wastes to produce advanced products such as nanofibers has gained attention recently. [ 7,16,17 ] In terms of the advantages of nanofiber production, it enables the creation of fabrics with unique properties that find applications in various fields. For example, nanofiber‐based fabrics are extensively used in biomedical textiles, [ 18,19 ] environmental solutions, [ 20–25 ] electronics and energy sectors, [ 26,27 ] and textiles manufacturing.…”