Method for preparing activated carbon by carrying out microwave irradiation on banana straws

Abstract

The invention discloses a method for preparing activated carbon by carrying out microwave irradiation on banana straws. The method comprises the steps of: cutting air-dried banana straws into small sections, soaking with zinc chloride/calcium chloride mixing solution, fishing up and drying without water drops, performing microwave irradiation, soaking with acid solution, taking out for draining, bleaching with deionized water and drying, cooling to room temperature, and crushing to obtain activated carbon. The activated carbon prepared by using the method achieves the methylthionine chloride decolorizing capacity of 16-25mL/0.1g which is greatly higher than that of the national standard high-quality activated carbon. Furthermore, wastes of agricultural products are utilized, so that the added value of the agricultural products can be improved, the environment protection pressure can be effectively reduced, and the method is simple in technique, short in flow and favorable for popularization.

Description

technical field [0001] The invention relates to a method for preparing activated carbon by irradiating banana stalks with microwaves. Background technique [0002] Banana is a very important subtropical fruit with special economic value. After the bananas are harvested each year, the stalks of the bananas become waste. Because banana stems have long fibers and contain a lot of water, they are not easy to rot and constitute environmental pollution. How to comprehensively develop banana stalk waste to increase the added value of crops has been a subject of many researchers. [0003] Activated carbon has a well-developed pore structure. Due to its huge surface area and excellent adsorption performance, it has been widely used in many industrial and living fields, and has gradually entered people's daily life. Theoretically, any carbonaceous material can be used as a raw material for activated carbon, but due to the great differences in raw materials and production processes,...

AI Technical Summary

Problems solved by technology

At present, most of the fruit shells and agricultural and forestry wastes are often discarded in the fields, or burned to cause air pollution, which not o

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