There are many factors that affect the adsorption performance of activated alumina. According to different uses of activated alumina, the products need to play different roles, and the problems encountered in the use process are also different. The factors that may affect its adsorption performance are also diverse. details as follows:
1. Particle size: When used as activated alumina desiccant, the effect of particle size on the adsorption performance is more obvious. The smaller the particle size, the stronger the adsorption performance. The more commonly used are 3-5mm, 4- These two specifications of 6mm, but the mechanical strength of activated alumina with small particles is relatively lower than that of large particles, and the service life is not as long as that of activated alumina with large particles.
2. Use environment: as a fluoride removal agent for activated alumina to remove fluoride ions in water. When the pH value of raw water is lower, the adsorption capacity of activated alumina is larger, the effect of fluoride removal is better. The greater the fluorine and adsorption capacity. The raw water has high alkalinity, heavy bicarbonate concentration, and low adsorption capacity. Secondly, the effects of chloride ions, sulfate ions, and arsenic in the raw water are very important. Activated alumina will adsorb arsenic in water. The accumulation of arsenic leads to a decrease in the adsorption capacity of fluoride ions, and it is difficult to elute arsenic ions during the regeneration process. It will affect the use effect.
3. Packaging and storage: The adsorption performance of activated alumina is extremely strong, the product packaging must be done well, the inner thickened plastic moisture-proof film lining, the outer woven bag packaging, the double-layer packaging is safer, avoid contact with the air humid gas, avoid Soaked in water. Activated alumina should be stored in a ventilated and dry place, and the packaging bag should avoid damage caused by sun exposure, avoid squeezing of heavy objects, and ensure the integrity of the desiccant product.