2results about How to "Increase fixed amount" patented technology

The application discloses an improver for treating cadmium contaminated soil and a preparation method thereof, and belongs to the technical field of heavy metal contaminated soil treatment. The improver comprises the following raw materials: iron oxide, tri-potassium phosphate, biochar, corn sugar residue, xanthan gum, sodium citrate, vitamin E, arbutin, bilirubin and sodium bicarbonate. The improver is applied to cadmium contaminated soil, cadmium ions in the soil can be adsorbed and precipitated to form cadmium precipitates, the toxicity of the cadmium ions is reduced, earthworms ingest the cadmium precipitates into the body and fix them, so that the cadmium content in the soil is reduced. The improver can also promote the absorption, ingestion and digestion of cadmium ions by earthworms, maintain the normal physiological activities of the earthworms, reduce the toxic effect of cadmium on the earthworms, and make the earthworms better treat cadmium contaminated soil. The preparation method of the improver is simple, good in effect and friendly to the environment.

This invention discloses a method for full-cycle carbon dioxide sequestration based on multiphase reaction filling materials, relating to the field of carbon sequestration, comprising the following steps: adding gaseous SiO2 and nano-CaO particles to the filling material as gas-entraining agents and transport enhancers; injecting CO2 gas into the filling slurry to form a gas-liquid two-phase dispersion system, and adding a surfactant with a mass fraction of 0.05%-0.2% to the filling slurry; transporting the filling slurry to the downhole filling area through a delivery pipeline, and installing an online rheometer in the delivery pipeline; after the filling slurry is injected into the goaf, injecting CO2 into at least one of the top, bottom, and sidewalls of the goaf through a gas injection pipeline until a gas-liquid-solid three-phase reaction interface is formed; monitoring its strain and acoustic emission signals in real time, and when a sudden change in signal is detected, determining that a new fracture has been generated or an existing fracture has expanded, and injecting CO2 gas into the target fracture through a pre-embedded gas injection pipeline.