Removal of lead(II) from water by di (2-ethylhexyl) phosphate containing ion exchange resin

A B S T R A C TChemically oxidized pineapple fruit peel biomass has been used as a biosorbent for Cd(II) and Pb(II) removal from aqueous solutions. Fourier transform infrared spectroscopy and scanning electron microscopy techniques were used to characterize the treated pineapple fruit peel. The biosorption efficiency of pineapple fruit peel for Cd(II) and Pb(II) was greatly enhanced after chemical oxidation probably due to introduction of carboxylic and hydroxyl groups onto the biosorbent surface. Biosorption kinetics for both metals was well described by pseudo-second-order kinetic equation and intraparticle film diffusion. Langmuir, Freundlich, and Temkin isotherm models were applied to the biosorption equilibrium data and best results were obtained with Langmuir isotherm model. Maximum monolayer biosorption capacity was found to be 42.10 and 28.55 mg g −1 for Cd(II) and Pb(II), respectively. Thermodynamic study indicates that the biosorption was exothermic and the spontaneity of the process decreases with the increase in solution temperature.

Section: Desalination and Water Treatmentmentioning

confidence: 98%

“…[4][5][6][7][8]. Among these methods, biosorption has been investigated as a cost-effective and highly efficient process, and the ability of the biosorbent was to bind and sequester the metal ions from wastewater [9].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Chemically oxidized pineapple fruit peel for the biosorption of heavy metals from aqueous solutions

Ahmad

Khatoon

Mohd‐Setapar

et al. 2016

“…(2015) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] www.deswater.com doi: 10.1080/19443994.2015.1055813 even at trace levels. Both causes an acute and chronic poisoning, adverse effects on human body parts such as kidney, liver, and heart, damage the functioning of the thyroid gland, the vascular system, the immune system, and causes asthma [6,7].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…Currently several methods being used for the treatment of heavy metals from contaminated wastewaters including filtration, membrane separation, electrochemical treatment, ion exchange, adsorption, and bioremediation [12][13][14][15][16]. However, bioremediation has been investigated as a cost effective, highly efficient process, and with the ability of biosorbent to bind and sequester the metal ions from wastewaters [17].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Factors affect on bioremediation of Co(II) and Pb(II) onto Lonicera japonica flowers powder

Lingamdinne

Koduru

Jyothi

et al. 2016

A B S T R A C TBioremediation is a low-cost eco-friendly separation technique for the treatment of pollutants such as heavy metals and organics from wastewaters. In the present study, a biosorbent, Lonicera japonica flowers powder (LJFP) was prepared from Lonicera japonica flowers (LJF) for treating Pb (II) and Co(II) from aqueous solutions and was well characterized by FT-IR and SEM-EDX. The kinetic results showed that the kinetics of both metal ions was rate limiting pseudo-second order. However, Pb(II) was also involved in chemisorptions, which was proved by the Elovich kinetic model. The equilibrium data of Pb(II) were tuned with Langmuir isotherm whereas Co (II) was fit to Freundlich isotherm model. The maximum uptake capacities of LJFP for Pb(II) and Co(II) were 19.61 and 43.48 mg/g at 298 ± 2 K, pH 6.0. Thermodynamic studies were conducted in the range of temperature, 298-313 ± 2 K, and were revealed that the sorption process of Pb(II) and Co(II) on LJFP was endothermic. Overall studies demonstrated that the biomass, LJFP is a promising, efficient, economical, and reusable sorbent.

“…Traditional metal ion treatment methods mainly include precipitation, ion exchange, electrolysis, reverse osmosis, and adsorption. Among these treatment methods, adsorption is considered to be an excellent and promising method for the removal of heavy metals from wastewater [2][3][4][5]. Nowadays, most chelating resins developed for the removal of heavy metal ions rely on the complexation of the metal ions with the functional groups present in the chelating resins.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of 2-phenoxyethanol/formaldehyde copolymer beads by dispersion polycondensation and their adsorption properties for copper ions after polyamine modification

Song

et al. 2016

A B S T R A C TTwo kinds of novel chelating resins were prepared by surface modification of 2-phenoxyethanol/formaldehyde copolymer beads (PB) with ethylenediamine (EA) and diethylenetriamine (DEA) (denoted as PB-EA and PB-DEA, respectively). The obtained resins were characterized by infrared spectra, scanning electron microscopy (SEM), and elemental analysis to demonstrate successful surface modification. The adsorption properties of the resins for metal ions are investigated. The results showed that the resins have higher adsorption capacities for Cu(II) than other metal ions such as Pb(II), Hg(II), Ag(I), Ni(II), Zn(II), Co(II), and Cr(III), with the maximum adsorption capacities of 0.15 mmol/g for PB-EA and 0.18 mmol/g for PB-DEA. Furthermore, the adsorption mechanism was studied in details. The adsorption processes of the resins for Cu(II) are governed by a film diffusion mechanism and follow the pseudo-first-order model well. The Langmuir model fits the equilibrium data better than the Freundlich isotherm. The adsorbed Cu(II) can be effectively desorbed with 1 M HNO 3 solution, and the resins can be used more than five adsorption-desorption cycles.