The Technical Method Of Odor Absorption Of Nut Shell Activated Carbon?

In the process of food production, the national quality inspection department will have a set of strict requirements on product quality, raw materials, packaging, etc., in order to protect the safety of consumers. Therefore, relevant food manufacturers will There is a strict check on color, taste, packaging, and quality. In the production of food, there are often problems with odors in products. For this odor, most manufacturers will choose fruits that are healthy, non-toxic, harmless, and non-irritating. Shell activated carbon to purify these gases, and the effect is excellent.

Nutshell activated carbon can be used for sewage treatment and air purification, it also has a wonderful effect on removing the earthy smell and odors mixed with alcohol, beverages and tap water. The reason why the shell activated carbon can remove odor is mainly because it has a special microporous structure. These micropores constitute a very large specific surface area of activated carbon. At a certain temperature and pressure, activated carbon absorbs some gases through micropores, especially polar-containing gases into its pores, thereby greatly reducing the content of these gases in the air and purifying.

The shell activated carbon adsorbs these gases. The strong adsorption is called 0010010 quot;chemical adsorption 0010010 quot;, and the weak adsorption is called 0010010 quot;physical adsorption 0010010 quot;. The vast majority of physical adsorption is reversible, some of chemical adsorption is reversible, and some are irreversible. Irreversible adsorption is non-renewable and will permanently inactivate the activated carbon. At this time, only the shell activated carbon can be replaced.

When the fruit shell activated carbon is saturated, it loses its adsorption effect (failure). At this time, it is necessary to heat to desorb the gas adsorbed by it, thereby restoring the activity of the fruit shell activated carbon, which can be reused.

Due to the high requirements for water pretreatment of fruit shell activated carbon and the high price of activated carbon, in the treatment of wastewater, fruit shell activated carbon is mainly used to remove trace contaminants in wastewater to achieve the purpose of deep purification. The husk activated carbon is used to treat cyanide-containing wastewater. In industrial production, gold and silver wet extraction, chemical fiber production, coking, synthetic ammonia, electroplating, gas production and other industries all use cyanide or by-product cyanide, so a certain amount of cyanide must be emitted during the production process Wastewater.

Fruit shell activated carbon has a long history of purifying wastewater, and there are more and more literature reports on the treatment of cyanide-containing wastewater. However, due to the small adsorption capacity of CN_ and HCN on the shell activated carbon, generally 3mgCN / gAC to 8mgCN / gAC varies with the species, which is not cost-effective in terms of treatment cost. Nutshell activated carbon is used for water purification and sewage treatment, and microfiltration is a precision filtration technology. Its pore size generally ranges from 0.05 to I0 // m.

Between conventional filtration and ultrafiltration, it belongs to the purpose of separation and concentration driven by pressure. There is no change of phase state and interface quality transfer, which is different from conventional filtration. Conventional filtration is generally divided into deep filtration and mesh filtration. The media it uses, such as paper, asbestos, glass fiber, ceramics, cloth, felt, etc., are some porous bodies with extremely unporous pores. The pore size distribution is wide, and the pore size cannot be marked. It was blocked by the tortuous trapped inside the medium. The retention rate B6 pressure increases and decreases, the medium is thick, and the particle accommodation is large, which is used for general clear filtration.