Fast removal of heavy metal ions and phytic acids from water using new modified chelating fiber

• Published in: Chinese chemical letters Vol. 23; no. 1; pp. 105 - 108
• Main Authors: Xu, Li, Wang, Jin Nan, Meng, Ying, Li, Ai Min
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2012; State Key Laboratory of Pollution Control and Resource Reuse & School of the Environment, Nanjing University, Nanjing 210046, China
• Subjects: Heavy metal ions; Modified chelating fiber; Phytic acid; Removal; 吸附动力学; 改性; 植酸含量; 螯合纤维; 过氧化物; 重金属离子吸附; 除水; 非均匀介质; Removal; Heavy metal ions; Modified chelating fiber; Phytic acid
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2011.09.029

The graft copolymerization of acrylic acid（AA） onto polyethylene glycol terephthalate（PET） fiber initialed by benzoy peroxide （BPO） was carried out in heterogeneous media.Moreover,modification of the grafted PET fiber（PET-AA） was done by changing the carboxyl group into acylamino group through the reaction with dimethylamine.The modified chelating fiber（NDWJN1） was characterized using elementary analysis,SEM and FT-IR spectroscopy.Adsorption kinetic curves indicated that NDWJNl could fast remove heavy metal ions and phytic acids from water effectively.Furthermore,batch kinetic studies indicated that heavy metal ions adsorbed to NDWJNl could be filted well by both pseudo-first-order and pseudo-second-order adsorption equations,but the intra-particle diffusion played a dominant role in the adsorption of phytic acids.