REACTIONS OF COPPER IN SOIL
Sayed Ahmed El-Tohamy Mohamed;
Abstract
Three experiments were conducted to (i) evaluate adsorption isotherms of copper by two soils (varied in their texture and calcium carbonate content), pure clay minerals and oxides of Fe and Al,(ii) investigate the effect of pH on adsorption and desorption of copper from the adsorbent materials, and(iii) assess the competitive adsorption of copper and zinc on the tested materials.
Experiment 1:
This experiment was carried out to evaluate adsorption of copper by tow soil samples (sandy loam and sandy clay loam with
11.84 and 21.15%CaC03,respectively) clay minerals (kaolinite
,bentonite,atapolgite and montmorillonite) and oxides of Fe and AI
with and without back -ground of calcium nitrate.
A portion of one gram of each soil sample and 0.1 gram of clay minerals and oxides of Fe and AI were equilibrated for an hour in a 50-mL reaction vessel with a solution of Cu(N03)2 having 0-50 flg Cu mL, in presence ofCa(N03)2 ranging from 0-0.1 Mas a back ground.
The pH of clay minerals and Fe and AI oxides was adjusted to 4 and 6. After equilibrium, Cu content in the filtrate was determined using atomic absorption spectroscopy (AAS) and calculations of adsor bed Cu were done .
Experiment II:
To investigate the desorption of Cu from the adsorbent materials the second experiment was conducted.
Experiment 1:
This experiment was carried out to evaluate adsorption of copper by tow soil samples (sandy loam and sandy clay loam with
11.84 and 21.15%CaC03,respectively) clay minerals (kaolinite
,bentonite,atapolgite and montmorillonite) and oxides of Fe and AI
with and without back -ground of calcium nitrate.
A portion of one gram of each soil sample and 0.1 gram of clay minerals and oxides of Fe and AI were equilibrated for an hour in a 50-mL reaction vessel with a solution of Cu(N03)2 having 0-50 flg Cu mL, in presence ofCa(N03)2 ranging from 0-0.1 Mas a back ground.
The pH of clay minerals and Fe and AI oxides was adjusted to 4 and 6. After equilibrium, Cu content in the filtrate was determined using atomic absorption spectroscopy (AAS) and calculations of adsor bed Cu were done .
Experiment II:
To investigate the desorption of Cu from the adsorbent materials the second experiment was conducted.
Other data
| Title | REACTIONS OF COPPER IN SOIL | Other Titles | تفاعلات النحاس فى التربة | Authors | Sayed Ahmed El-Tohamy Mohamed | Issue Date | 2002 |
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