In order to estimate the heavy metal retention capacity of clay, the adsorption test on three clay samples which respectively consist mainly of illinite, montmorillonite and kaolinite was carried out.

Liquid N_2 adsorption test was made on lime and cement modified expansi ve soils by automatic adsorption apparatus, and quantitative analysis was made o n micro pores of modified expansive soils through adsorption theory.

Many tests are hold including the static adsorption test, the dynamic adsorption test, the test of forming membran.

Research status and progress of solid adsorption desiccant air conditioning system;

For the solar energy solid adsorption rotary refrigeration system using activated carbon fiber-ethanol as its pair,one-dimensional uniform pressure field mathematical model along the circumference of adsorbent bed was adopted to carry out a static simulation calculation of the temperature field of the adsorption wheel bed.

A review and a comprehensive analysis was made of the research and application of the solid adsorption heat storage technology, the key problem of solid adorption heat storage technology was put forward, research progress of ad- sorption heat storage workong pairs and optimization of mass and heat transfer through the heat storage beds was clarified.