Preparation method of mizue brocade straw activated charcoal

Abstract

The invention provides a method for preparing loosestrife straw active carbon, comprising the steps that: 1. the loosestrife straw is dried and crumbled into fractions so as to be able to get through a 70 to 100 mesh sieve; 2. the loosestrife straw is steeped for 3 to 4 hours in phosphoric acid with 50 percent to 70 percent density at a dipping ratio of 2.5:1; 3. the loosestrife straw is put into an activating oven for carbonization and activation with the activation temperature of 450 DEG C to 500 DEG C for 1.5 to 2.5 hours, or the carbonization and activation are carried out in a microwave oven with the protection of nitrogen, the power of the microwave is 1000W and the microwave radiation time is 7 to 8 minutes; 4. then washing with water is carried out until getting a neutral status; finally, drying under 105 DEG C is carried out so as to obtain the loosestrife straw active carbon. The invention takes the loosestrife with a wide source as the raw material, thereby being easy to be operated and environment protective with low cost, and compared with active carbon prepared with other raw materials, the invention is characterized by a plurality of pore canals, good absorbability performance, larger surface area and more pore volume.

Description

technical field [0001] The invention relates to a method for preparing activated carbon by using Shuizhijin straw. Background technique [0002] At present, wood, sawdust, coconut shells, fruit stones, etc. are mostly used as raw materials for the preparation of activated carbon. Due to the reduction of sources of wood, etc., it is difficult to collect fruit shells centrally, which greatly limits the raw materials for the preparation of activated carbon, and the price is also on the rise. Also have sludge, plastics as raw material preparation activated carbon, but this method can cause environmental pollution. At the same time, the adsorption effect of activated carbon prepared with the above raw materials is not very ideal. Therefore, it is of great practical significance to seek new raw materials to prepare activated carbon by adopting a feasible new process. As a common aquatic plant, the stalks of Shuizhijin not only cause lake water pollution but also affect the lands...

AI Technical Summary

Problems solved by technology

[0002] At present, the raw materials for the preparation of activated carbon are mostly wood, wood chips, coconut shells, fruit cores, etc. Due to the reduction of sources of wood, etc., it is difficult to collect the fruit shells in a centralized manner, which greatly limits the raw materials for the preparation of activated carbon, and the price is also on the rise.

Others use sludge and plastics as raw materials to prepare activated carbon, but this method will cause environmental pollution

At the same time, the adsorption effect of activated carbon prepared with the above raw materials is not very ideal

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