Experiments were carried out to evaluate the NH4+ adsorption capacity of natural vermiculite and bio-vermiculite systems.

As an alternative solution to the poor performance of constructed wetlands in municipal sewage treatment in winter,a buffer unit using natural vermiculite as filler was introduced into the system.

Adsorption of cesium by vermiculite;

Progress in research on alkylamine-vermiculite composites;

Preparation and properties of natural rubber/organic vermiculite nanocomposites;

Production practice of substitue desulfogypsum for natural gypsum as retardant;

The results show that though the waste gypsum used independent can affect the setting time and the strength of cement, the waste gypsum mixed with natural gypsum is used as cement eretarder, and the content of SO3 is controlled correctly, the qualified cement can be produced in inherent technology conditions, and the high performance concrete can be made with this cement.

Oil recovery enhancing mechanism by natural zeolite and the effect analysis;

Adsorption of cadmium (Ⅱ) in solution by natural zeolite-chitosan adsorbent;

Removal of arsenic from water by modified natural zeolite and chitosan;