Preparation of a Novel Adsorbent and Heavy Metal Ion Adsorption

Abstract

The article focuses on the preparation of a novel adsorbent by grafting amino-terminated hyperbranched polymer to cotton fibers and the adsorption of heavy metal ions from aqueous solution. The prepared novel adsorbent was characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The experimental results show that the amino-terminated hyperbranched polymer was grafted to the oxidized cotton fibers, and the adsorbent with amino-terminated hyperbranched polymer was successfully obtained. The grooves on the surface of the grafted cotton fiber were filled with amino-terminated hyperbranched polymer. The adsorption experiments show that the adsorption amount of Cu2+ and Pb2+ was up to 16.1 mg/g and 13.4 mg/g with the metal ion concentration of 319.5 ppm and 315.9 ppm, respectively. When the dosage of adsorbent was 1.5 g in 100 mL metal ion solution, the adsorption rate of Cu2+ and Pb2+ reached 73.5 wt. % and 71.2 wt.%, respectively. The use of the adsorbent for the removal of metal ions is considered to be efficient and have great potential for practical applications.

Synthesis and characterization of cellulose-based adsorbent for removal of anionic and cationic dyes

“…Hyperbranched polymers, such as hyperbranched poly(ethylene imine), hyperbranched polyamide amine, and hyperbranched polyester, have shown efficiently to entrap heavy metal ions and organic molecules in their interior. [19][20][21][22][23] Amino-terminated hyperbranched polymer (NH 2 -HBP) have abundant functional groups to be used in the dyeing as an auxiliary. 24 Beta-cyclodextrin (β-CD) is a torus-shaped cyclic oligosaccharide made up of seven α-1,4-linked-d-glucopyranose units.…”

Nanostructured and Selective Filter To Improve Detection of Arsenic on Surface Plasmon Nanosensors

“…This material offers the following advantages: (i) high rate retention of solids in collected water samples; (ii) capacity of being functionalized for selective retention of heavy metals; (iii) no retention of arsenic (when the cotton fibers are not activated); (iv) low cost; (v) easy operation; and (vi) degradability.…”

“…In a second stage, the filter is a hollow polypropylene cylinder filled with cotton fibers as absorbent of microand nanoparticles and chemical agents (Figure 1). This material offers the following advantages: (i) high rate retention of solids in collected water samples; (ii) capacity of being functionalized for selective retention of heavy metals; 26 (iii) no retention of arsenic (when the cotton fibers are not activated); (iv) low cost; (v) easy operation; and (vi) degradability.…”

Adsorption of Cu(II) from Aqueous Solutions by Ammoniated Cotton Fiber

“…Cotton fiber (CF) was preprocessed using sodium hydroxide according to previous studies [20,21] in order to decrease the crystallinity. The preprocessed cotton fiber was then oxidized with sodium periodate solution (2 wt.%), with a bath ratio of 1:50, at 70℃, for 2 hours, washed with deionized water several times to remove the oxidant, and dried in vacuum oven.…”