| Summary: | 碩士 === 中原大學 === 土木工程學系 === 87 === Abstract
The purpose of this experiment is to study : 1. The adsorption test in different weight of soil with Cadmium solution ; 2. The adsorption test in different particle size of soil with Cadmium solution ; 3. The adsorption test in different soil depth with Cadmium solution.
Using simple filtration equipment, pouring Cadmium solution into different weight of soil to find out the critical change about soil adsorb Cadmium. The results showed that, clay soil could adsorb Cadmium about ten thousands to one in weight ratio and have good linear correlation between the amount of soil and Cadmium.
The results also showed that the more the soil (pH=5.31) used, the more the Cadmium acid solution (pH=2.57)could be neutralized.
In the analysis of different particle size of soil, the finer the particles, the more the particle numbers, specific surface and Cation exchange capacity, and more polluted material could be adsorbed.
In the analysis of different soil depth, a small scale of model was used to simulate the real condition. It was found that most of the heavy metal Cadmium distributed within the depth of 30cm.
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