Xylose decolorization is effective with nutshell activated carbon


As an adsorbent, coal-based columnar activated carbon has the advantages of strong adsorption performance, high mechanical strength, good purification efficiency, easy regeneration, and low cost.

Xylose decolorization is effective with nutshell activated carbon
As an adsorbent, coal-based columnar activated carbon has the advantages of strong adsorption performance, high mechanical strength, good purification efficiency, easy regeneration, and low cost. It is widely used in industry, agriculture, science and technology and people's lives. It has become an indispensable and important raw material in the national economy and industry.
Xylose products mainly use corn cobs, bagasse and other agricultural and sideline products as raw materials, and are widely used in food, candy and other industries through processes such as hydrolysis, purification, evaporation, crystallization, centrifugation, and drying. Because xylose is extracted from plant raw materials, it often contains melanin, caramel pigment and other pigments, which seriously affects the selection of production process indicators and product quality, and must be removed.
Nutshell activated carbon technology has been widely used in the modern sugar industry, but most sugar factories use powder activated carbon to decolorize and purify the sugar liquid, which has problems such as operation failure, serious environmental pollution, difficulty in recycling waste carbon, and difficulty in regeneration treatment. The powdered activated carbon has a great adsorption effect on sugar, resulting in the loss of sugar and higher operating costs.
Nutshell activated carbon is a kind of solid particle adsorption material. Its pore size is mainly mesoporous, and the pore diameter is cylindrical. The V shape is mainly based on the shell of the fruit and adding chemical reagents such as phosphate. It has a large adsorption capacity and is easy to regenerate. , Strong anti-pollution, strong liquid flow resistance, not easy to lose and other advantages. Due to the reasonable pore size distribution and special pore type of nutshell activated carbon, it is easy to adsorb various pigment ions and produce chemical bonds.
The chitosan activated carbon produced by the chemical method is used to decolor the sugar solution in the process of xylose removal. The light transmittance of the decolorized sugar solution is more than 70%, which fully meets the production requirements. At the same time, the decolorization of the nutshell activated carbon simplifies the production process. The labor intensity and production cost of workers are reduced, and the goal of continuous process and simple operation is truly realized. Experimental results show that nutshell activated carbon can completely replace powdered activated carbon in the sugar industry.