Preparation and characterization of a novel hybrid chelating material for effective adsorption of Cu(II) and Pb(II)

Journal of Environmental Sciences (China)
Ya LiuYunfa Chen

Abstract

The discharge of heavy metal ions such as Cu2+ and Pb2+ poses a severe threat to public health and the environment owing to their extreme toxicity and bioaccumulation through food chains. Herein, we report a novel organic-inorganic hybrid adsorbent, Al(OH)3-poly(acrylamide-dimethyldiallylammonium chloride)-graft-dithiocarbamate (APD), for rapid and effective removal of Cu2+ and Pb2+. In this adsorbent, the "star-like" structure of Al(OH)3-poly(acrylamide-dimethyldiallylammonium chloride) served as the support of dithiocarbamate (DTC) functional groups for easy access of heavy metal ions and assisted development of large and compact floccules. The synthesized adsorbent was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). APD was demonstrated to have rapid adsorption kinetics with an initial rate of 267.379 and 2569.373mg/(g·min) as well as superior adsorption capacities of 317.777 and 586.699mg/g for Cu2+ and Pb2+ respectively. The adsorption process was spontaneous and endothermic, involving intraparticle diffusion and chemical interaction between heavy metal ions and the functional groups of APD. To...Continue Reading

Citations

Sep 25, 2019·Environmental Technology·Xiaomi YuanJianhan Huang
Oct 14, 2018·Environmental Science and Pollution Research International·Serdar KorpayevPınar Akkaş Kavaklı
Jan 4, 2019·Environmental Science and Pollution Research International·Mengjiao ZhangGuangzhu Cao
Jan 17, 2020·Journal of Environmental Management·Xiaoyi XuTianyin Huang

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