Adsorption of Nickel (II) Ions From Aqueous Solutions Using Alumina

Abstract

Abstract:The paper presents the results achieved during the process of nickel removal from aqueous solutions by adsorption on alumina (Aluminum oxide) in continuous conditions. The continuing experiments were conducted in a glass column with diameter of 16 mm and fi xed bed of adsorbent with quantity ranging from 30 to 115 g, adsorbent grains size from 1.0 to 2.0 mm, and retention time of 0.5 to 12 minutes. The quantity of nickel in the aqueous solutions was changed within the range of 0.045 up to 0.12 mg/l Ni. The analysis of the obtained experimental data defi ned the mutual affection of the retention time, the initial nickel concentration in the water, and the adsorbent quantity, i.e. the content of the adsorbent in the treated solution to the adsorbent capacity.According to the achieved results, logarithmic mathematical model showed best correlation between experimental and calculated values, also maximum nickel ions adsorption uptake onto the alumina were determined as 400 mg/g.

Adsorption of arsenites and arsenates from aqueous solutions by application of modified natural inorganic materials: A kinetic study

“…This water supply was used for preparation of experimental solutions. An operating solution with concentration of 1 g/l was used for preparation of experimental solutions with concentrations of 20, 30, 40 and 90 μg/l of As(III) and As(V) by utilization of the following salts [6], provided by FLUKA Riedel-de-Haen -Germany: The modified materials were subjected to a chemical analysis to determine the effect on the material and obtained results are presented in Table 4. The analysis was performed according to the same procedure and on the same instrument as in the case of the raw material using the analyzer XRF ARL 9900 XP Thermo ARL.…”

Equilibrium Study for Adsorption of Arsenites and Arsenates From Aqueous Solutions by Application of Modified Natural Inorganic Materials

“…This water supply was used for preparation of experimental solutions. An operating solution with concentration of 1 g/l was used for preparation of experimental solutions with concentrations of 20, 30, 40 and 90 μg/l of As(III) and As(V) by utilization of the following salts [6], provided by FLUKA Riedel-de-Haen -Germany:…”