Sand-fixing agent proposed in papermaking waste liquid

According to the Lanzhou Daily reported on December 16, the reporter learned from the Lanzhou Institute of Chemicals of the Chinese Academy of Sciences that the research group of the organic polymer materials of the State Key Laboratory of Oxo Synthesis and Selective Oxidation has carried out research on chemical sand fixation methods for polymer materials and successfully prepared Lignosulphonate graft copolymer chemical sand fixing agent, which can increase organic content in sandy soil after spraying, improve soil and be biodegradable. It not only controls the pollution of papermaking waste liquid, but also can be used for desertification treatment. The governance-based development of the western ecological environment is of great significance. Recently, this achievement has won national invention patents.

The research group extracted lignin or lignin sulfonate derivatives by pretreatment of papermaking waste liquid, and then separately or simultaneously used aldehyde compounds and unsaturated amide, unsaturated acid or ester compounds as reaction components, and lignin Or its derivatives are chemically modified to synthesize series of lignosulphonate graft copolymer chemical sand fixing agents. The lignin in the sand-fixing agent is a humus protozoa. After spraying, the organic matter content in the sandy soil can be increased, and the soil can be modified and biodegraded. This sand-fixing agent has enhanced water solubility and better moisture absorption and water retention. The professional experimental tests show that the sand-fixing agent has good anti-wind erosion ability and high compressive strength performance, which can not only avoid the pollution of papermaking waste liquid, but also can be used for desertification treatment, and it is also important for the construction of the western ecological environment based on desertification control. It is of great significance.

Binder Clips

Colored Binder Clips, Black Binder Clips, Metal Binder Clip, Small Binder Clips

JNY International Trade Co., Ltd , http://www.jny-stationery.com