Aqueous heavy metals removal by adsorption on β-diketone-functionalized styrene–divinylbenzene copolymeric resin

Abstract

An investigation was undertaken regarding the adsorption of different heavy metal ions from aqueous solutions using b-diketone-functionalized styrene divinylbenzene resin under different experimental conditions such as initial concentration of metal ions, contact time, pH, and chelating capacity. The functionalization of resin was carried out by the condensation reaction of sodium salt of b-diketones (pentane-1,3-dione) and chloromethylated styrenedivinylbenzene resin in dichloromethane. Functionalized resin beads were characterized by Fourier transform infrared spectroscopy. The batch method was employed using different metal ions solution from 5 to 15 mg/L at different contact times. The adsorption kinetics was tested for the pseudo-first order, pseudo-second order reaction at different experimental conditions. The rate constant of adsorption kinetic models were also calculated and good correlation coefficient (R 2 [ 0.9941) was obtained for pseudo-second order kinetic model. The maximum adsorption value obtain for lead (0.725728 mg/g), chromium (0.9199 mg/g), nickel (0.4974 mg/g), cobalt (0.6196 mg/g) and cadmium (0.6519 mg/g) at equilibrium condition, which shows that b-diketone-functionalized styrene divinylbenzene resin is an effective adsorbent for toxic metal ions.

Adsorbents apply for Cr(VI) removal from aqueous solutions

“…Żywice chelatujące są syntetycznymi polimerami składającymi się z dwóch części: chelatu zawierającego grupy funkcyjne oraz polimerowej matrycy [27]. Grupy funkcyjne posiadają jeden lub więcej atomów donorowych tworzących z jonami metali kompleksy.…”

“…Grupy funkcyjne posiadają jeden lub więcej atomów donorowych tworzących z jonami metali kompleksy. Atomem donorowym jest najczęściej azot (w grupach aminowych, azotowych, amidowych, nitrylowych), tlen (w grupach karboksylowy, hydroksylowych, fenoplastach, eterach, grupach karbonylowych) czy siarka (tiola, tioetery) [27].…”

Defluoridation of water by activated carbon prepared from banana (Musa paradisiaca) peel and coffee (Coffea arabica) husk

“…However, these techniques have certain disadvantages such as incomplete removal, complicated treatment process, high cost, high energy requirement and operational cost, use of chemicals, and generation of toxic sludge or other waste products that again require disposal (Dubey and Shiwani 2012;Aliabadi et al 2012;Kumar et al 2012). Adsorption processes using natural adsorbents or agricultural waste products are becoming the new alternatives for the removal of fluoride from aqueous solution as they are cheap, simple, sludge-free, regenerable, environment friendly, involve small initial cost, and minimal chemical use (Saka et al 2012;Zhu et al 2012).…”

Efficient adsorption of dibutyl phthalate from aqueous solution by activated carbon developed from phoenix leaves

“…The pseudo-first-order rate model of Lagergren (Kumar et al 2012) is based on solid capacity and generally expressed as follows:…”

“…Constant k 1 and correlation coefficient (R 2 ) had been calculated and summarized 0.0172 and 0.9698. The kinetic data were further analyzed using the pseudosecond-order model (Kumar et al 2012) which, can be expressed as…”