Removal of cadmium and lead from aqueous solutions by magnetic acid-treated activated carbon nanocomposite

An iron-activated carbon nanocomposite synthesized by a facile, low temperature technique was successfully tested for Pb(ii) removal from aqueous solutions.

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Competitive effects for the adsorption of copper, cadmium and lead ions using modified activated carbon from bambo

MATEC Web of Conferences ◽

10.1051/matecconf/201926806021 ◽

2019 ◽

Vol 268 ◽

pp. 06021 ◽

Cited By ~ 2

Author(s):

Jherwin Ocreto ◽

Chester Ian Go ◽

Jans Cholo Chua ◽

Cyrrus Jude Apacible ◽

Anabella Vilando

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Aqueous Solutions ◽

Low Cost ◽

Modified Activated Carbon ◽

Box Behnken Design ◽

Competitive Effects ◽

Controlling Parameter ◽

Ph Level ◽

Cadmium And Lead

Modified activated carbon from bamboo was used as a low-cost potential adsorbent to remove cadmium, copper and lead in single, bimetal and trimetal aqueous solutions. Using the initial concentration of 40 ppm, the analysis was conducted to determine the effect of pH (2.5, 3.0, and 5.5), contact time (60, 90, 120 min) and adsorbent dosage (20, 40, 60 mg/50 mL of solution). Results showed that for single metal aqueous solution, the % adsorption for Cu, Cd, and Pb were 89.0%, 87.4%, and 99.5% respectively. For bimetal aqueous solution the % adsorption of CuCd, CuPb, CdCu, CdPb, PbCu,and PbCd were 90.6%, 98.9%, 55.1%, 80.7%, 99.6%, and 96.05%, respectively. While for trimetal aqueous solutions, % adsorption of Cu, Cd, and Pb were 87.4%, 73.0%, and 98.4%, respectively. The % removal uptake followed the order Pb > Cu> Cd gave insights into competition effects among the three solutes during the adsorption process. Using Box–Behnken Design, the effect pH of the aqueous solution is an important controlling parameter in which the % adsorption increased as the pH level is increased while other parameters were insignificant.

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The adsorption of Cadmium and Lead Ions from aqueous solutions using non living biomass of Phragmites australis

Iraqi Journal of Science ◽

10.24996/ijs.2017.58.1c.5 ◽

2017 ◽

Vol 58 (1C) ◽

Keyword(s):

Aqueous Solutions ◽

Phragmites Australis ◽

Lead Ions ◽

Living Biomass ◽

Cadmium And Lead

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Sorption of Cadmium and Lead by Chelating Ion Exchangers Ostsorb OXIN, Ostsorb DETA, and Ostsorb DTTA

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19941311 ◽

1994 ◽

Vol 59 (6) ◽

pp. 1311-1318 ◽

Cited By ~ 5

Author(s):

Ladislav Svoboda ◽

Petr Vořechovský

Keyword(s):

Ionic Strength ◽

Aqueous Solutions ◽

Sodium Perchlorate ◽

Exchange Capacity ◽

Chloride Ions ◽

Point Of View ◽

Alkaline Media ◽

Ion Exchangers ◽

Acidic Media ◽

Cadmium And Lead

The properties of cellulose chelating ion exchangers Ostsorb have been studied in the sorption of cadmium and lead from aqueous solutions. The Cd(II) and Pb(II) ions are trapped by the Ostsorb OXIN and Ostsorb DETA ion exchangers most effectively in neutral and alkaline media but at these conditions formation of stable hydrolytic products of both metals competes with the exchange equilibria. From this point of view, Ostsorb DTTA appears to be a more suitable sorbent since it traps the Pb(II) and Cd(II) ions in acidic media already. Chloride ions interfere with the sorption of the two metals by Ostsorb DTTA whereas the ionic strength adjusted by the addition of sodium perchlorate does not affect the exchange capacity of this ion exchanger.

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