In addition, the discharge of colored waste water into the water affects the penetration of sunlight and, in turn, reduces the activity of photosynthesis.

Therefore, removing highly stable dyes from textile dyestuff wastewater is the most important.

Nanomaterials are small in size and have wide industrial potential, including energy, biomedicine, and electronic applications.

Nanomaterials are small enough to ensure that many atoms or molecules are near the interface and form very high surfaces.

The surface properties can be completely different from the internal state, such as energy, electronic structure and reaction, resulting in completely different material properties.

Because of the enlargement of the area with nanomaterials, the adsorption capacity is enhanced.

The raw materials of nano composite adsorbent are nano metal / nano metal oxide materials, which are dispersed on the loading materials and synthesize a one-dimensional, two-dimensional and three-dimensional nanomaterials.

The ultraviolet visible spectrum is studied to ensure that it achieves the amount of color adsorption.

The nanocomposite adsorbent also eliminates the smell of gas molecules caught in the functional group.