Poly(methacylic acid-co-maleic acid) grafted nanofibrillated cellulose as a reusable novel heavy metal ions adsorbent.
A poly(methacrylic acid-co-maleic acid) grafted nanofibrillated cellulose (NFC-MAA-MA) aerogel was prepared via radical polymerization in an aqueous solution using Fenton's reagent. The ensuing aerogel, in the form of a rigid porous material, was characterized by FTIR and NMR and used as an adsorbent for the removal of heavy metals from aqueous solutions. It showed an efficient adsorption, exceeding 95% toward Pb(2+), Cd(2+), Zn(2+) and Ni(2+) when their concentration was lower than 10 ppm and ranged from 90% to 60% for a metal concentration higher than 10 ppm. Over 98% of the adsorbed metal ion was recovered using EDTA as a desorbing solution, and the subsequent washing allowed the aerogel to be reused repeatedly without noticeable loss of adsorption capacity. It was concluded that the (NFC-MAA-MA) aerogel may be used as a high capacity and reusable sorbent material in heavy-metal removing processes.
University of Sfax, Faculty of Science, LMSE, BP 802-3018 Sfax, Tunisia.
Wafa
W
Maatar
University of Sfax, Faculty of Science, LMSE, BP 802-3018 Sfax, Tunisia. Electronic address: sami.boufi@fss.rnu.tn.
Sami
S
Boufi
D000327:Adsorption; D002482:Cellulose / Q000737:chemistry*; D005782:Gels / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000737:chemistry; D007700:Kinetics; D008298:Maleates / Q000737:chemistry*; D019216:Metals, Heavy / Q000302:isolation & purification*; D057139:Nanofibers / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry*; D014867:Water / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods
C045076:Fenton's reagent; D005782:Gels; D008298:Maleates; D019216:Metals, Heavy; D011109:Polymethacrylic Acids; D014874:Water Pollutants, Chemical; D014867:Water; C030613:polymethacrylic acid; D002482:Cellulose; C030272:maleic acid; D006861:Hydrogen Peroxide; D007501:Iron
Adsorption; Aerogel; Metal; Nanofibrillated cellulose