Adsorption Study of the Removal of Copper (II) Ions using Activated Carbon Based Canarium Schweinfurthii Shells Impregnated with ZnCl2

Abstract

<p>The adsorption of Cu2+ions on activated carbon based canarium schweinfurthii impregnated with ZnCl2 was studied. The shells of canarium schweinfurthii were impregnated with ZnCl2 at varying ZnCl2 concentrations, temperature, residence time while keeping the heating rate fixed at 10 °C / min and the ratio of impregnation of 1:1. The activated carbon with the highest surface area in term of iodine number of 860,817 mg/g, the highest methylene blue of 741,6 mg/g and 74,66 % of yield of carbon was obtained at 650 °C, 60 % ZnCl 2 and 30min. From the batch adsorption studies, the equilibrium time was found to be 40 min. Analysis of equilibrium isotherm models revealed a good correlation of the experimental data with the Tempkin (R 2 = 0.909) model. This confirms a high affinity of the activated carbon for Cu 2+ ions on the heterogeneous surface. The value of energy obtained from the Tempkin model was 60,606 J/mol and the presence of pics between 487 cm-1 to 871 cm-1 indicating that physisorption and chemisorption were taking place during this sorption. The pseudo-second order kinetics(R 2 = 0.999) governs the adsorption of Cu2+ions on this activated carbon.</p>

Kinetic and Mechanism of the Adsorption of ß-Carotene Rich-Palm Oil onto Smectite Clay Activated by Fe (II) Lewis Acid Ion

“…Finally, the band at 3621 cm -1 corresponds to stretching vibrations of Al-Al-OH or Al-Mg-OH. But the difference occurred for the bands related to the Si-O-Fe groups between 400 and 600 cm -1 and to Fe-OH groups between 880 and 1100 cm -1 (Maguie et al, 2017) [29]. The latter bands exhibited higher absorbance for Clay-Fe (II), indicating that the fixation of Fe(II) onto clay has just provoked the rise of the Fe-related bands intensity.…”

Adsorption Capacity of Low Cost Activated Carbon For Removal of Copper Ions From Aqueous Media

“…Copper, an essential element in trace amount for human metabolism, but become toxic at above 2mg/L [4]. Such higher concentrations causes irritation in mucous membranes, hair damage and may be source of necrotic variations in the kidneys and liver [5]. The major sources of copper in wastewaters is energy and electronic industries [4].…”

“…The major sources of copper in wastewaters is energy and electronic industries [4]. To remove such pollutants from groundwater, adsorption on different costly adsorbents like imported activated carbons, photochemical decomposition by UV radiations, zeolites, or aeration is usually applied, but such methods are costly [6,7].The use of agricultural waste and products for the elimination of metals from queous media has been explored by many researchers [5,[8][9][10][11]. Activated carbon is an effective and competitive adsorbent for the elimination of toxic metals in tracesin aqueous media [11,12].…”