Ionic Resins for Environmental Protection

Alfa Chemistry always regards environmental protection as one of the company's development concepts. We have developed a series of environmentally friendly products, and new products are under development. We can not only help you solve the problem of economic efficiency, but also contribute to the field of environmental protection.

In the process of industrialization, environmental pollution is an inevitable problem. If it is not controlled, the consequences will be disastrous. So to minimize the impact on the environment, recycle and concentrate chemicals. The following processes are usually used: chemical precipitation, ion exchange, adsorption and membrane separation. Due to the presence of metals, lipids and other impurities, the traditional chemical precipitation method has poor recovery quality and cannot meet current environmental protection requirements. The ion exchange technology can not only meet better purification needs, has an optimized treatment process, and is low in cost. Therefore, ion exchange resins are widely used in environmental protection fields, such as repairing depleted soil and recovering chromium ions (hexavalent) and nickel ions in electroplating wastewater.

Repairing damaged and severely depleted soil and forming soil on barren land caused by human technological activities are important considerations for environmental protection. In some cases, nutrient-added ion exchange carriers can improve the fertility of natural soils because it contains all the biological ions in a balanced ratio required by plants.

In addition, waste resin and its activation products can also be used in environmental protection. The waste resin is carbonized at a temperature of 500 to 700 °C, and then activated with CO₂ at 850 °C for 45 minutes to obtain an activated product. The product has a developed ultra-microporous system with more micropores and mesopores than ordinary adsorption carbon. Therefore, they are excellent in removing small-molecular-sized hydrophobic impurities (such as toluene, diesel) in sewage. In addition, it can remove metal ions in sewage (such as Cu²⁺, Pb²⁺, Ni²⁺, etc.). ( WBB Kułażyński, 2002)

Common applications include:

• Wastewater removal of organic matter
• Softened geothermal water
• Removal of phosphorus
• Flue gas purification
• Recovery of Cr (III) salt from synthetic tannery wastewater

Reference

1. WBB Kułażyński. The utilization of waste ion exchange resin in environmental protection. Fuel Processing Technology, 2002.