Assessment of the produced grafted nylon-6 non woven fabrics as ion-exchangers in wastewater treatment

Abstract

The present work aims to assess: (a) The effectiveness of nylon nonwoven fabrics containing antimicrobial substance and grafted with PMAA, PDMAEMA and the blended fabric containing the above mentioned two types of nonwoven fabrics for metal ions (Cu 2+ , Pb 2+) and chromate (Cr 2 O 7) 2recovery from wastewater; (b) The amount of the ion-exchanger used; and (c) The desired quality of product water (breakthrough point) on the operating capacity of textile under investigation. The main objective of this study is to investigate the possibilities of the final effluent in order to comply with the National Environmental Regularity standard for wastewater discharge into the public sewage network. The Cu 2+ and Pb 2+ removal efficiency by the above mention textile types was studied by batch adsorption and column runs methods. It was found, in case of applying batch adsorption method that, the maximum removal of Cu 2+ (92%) takes place when nylon grafted with PMAA nonwoven fabric was used. The application of blended nonwoven grafted with PMAA and PDMAEMA fabric paves the way for high sorption (79%) of Cu 2+ from wastewater. The Cu 2+ removal with grafted with PDMAEMA nonwoven fabric slightly increased relative to control fabric. The maximum ion removal % of Pb 2+ (80-82%) was attained upon using all three types of grafted textiles, irrespective of the types of grafted polymer. Column method was used for determination of Cu 2+ and Pb 2+ removal efficiency by using the three types of grafted nylon-6 nonwoven fabrics. The copper and lead free effluents, breakthrough points and breakthrough capacities for the ion-exchangers under investigation were obtained Chromate removal efficiency by using Nylon non woven antimicrobial fabrics grafted with PDMAEMA was studied. For this anion exchanger fabric chromate free effluent, chromate breakthrough point and breakthrough capacity were also obtained.

Production of Antimicrobial Nonwoven Fabrics Based on Polyamide-6 (PA-6) Fibers on Industrial Scale

“…and Al-Balakocy, N.G. have developed an effective simple, and generally applicable method for imparting antimicrobial properties to polyester fabrics [5][6][7][8][9][10][11][12][13][14][15] . The achieved antimicrobial functions on woven fabrics produced on laboratorial scale have excellent durability in repeated laundering process.…”

Nonwoven Nylon-6 Functional Filters for Protection from Air Pollutants

“…This technology consists of the creation of antimicrobial substance (AS) in Nylon-6 fibers followed by grafting with methacrylic acid (MAA) [25] or with dimethylaminoethylmethacrylate (DMAEMA) [26] using Cu 2+ -K 2 S 2 O 8 redox system. The assessment of the produced above nonwoven fabrics as ion-exchangers in wastewater treatment was carried out [27].…”

Development of Pilot Scale System for Production of Polyamide-6 Fibers Grafted With Polymethacrylic Acid For Ion Exchange Applications

“…It is well known that quaternary ammonium groups (QAG) can form complexes with peroxides. This was successfully used for grafting PA-6 fibers with different vinyl monomers [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”