Method for preparing carbon material by utilizing biomass waste materials and application of carbon material prepared by method

Abstract

The invention discloses a method for preparing a carbon material by utilizing biomass waste materials and application of the carbon material prepared by the method. The method comprises the followingsteps: drying and crushing biomasses and then putting the biomasses into an acid solution for immersing; then putting the biomasses into an open hydrothermal system; putting the hydrothermal system into a muffle furnace and heating until the temperature is 180 DEG C to 250 DEG C; keeping the temperature for 5h to 8h, and reacting and filtering to obtain a carbon precursor; filtering and washing until the carbon precursor is neutral; mixing the carbon precursor with an alkaline activating agent solution with a certain concentration; putting the mixture into a magnetic stirring constant-temperature water bath pot, and stirring and heating to carry out hydrolysis reaction; after the reaction is finished, washing a product with water until the product is neutral; drying to obtain the carbon material. The surface of a carbon adsorbent contains abundant oxygen containing functional groups, such as carboxyl and hydroxyl, and the carbon adsorbent has a relatively good adsorption property to various heavy metal cations. According to the method disclosed by the invention, the biomass waste materials of agriculture and forestry are utilized, and the functionalized carbon adsorbent capable ofbeing used for managing heavy metal adsorption is prepared through a simple and rapid method; wastes are changed into valuable things and resources are sufficiently utilized; the environmental pollution is reduced, the economic benefits are good and the industrial production is facilitated.

Description

Technical field: [0001] The invention relates to the technical field of carbon material preparation, in particular to a method for preparing carbon material by utilizing biomass waste materials, and the application of the prepared carbon material in the preparation of functionalized materials for absorbing heavy metals. Background technique: [0002] With the rapid advancement of the global industrial economy, the discharge of industrial waste, the disposal of urban garbage, and the application of various chemicals have caused heavy metal pollution problems that have become increasingly prominent, seriously endangering the safety, production and utilization of food crops, and affecting human survival and development. Development poses a serious threat, which has attracted worldwide attention and attention. Among many remediation methods, using cheap and efficient adsorbents to adsorb harmful organic matter or heavy metal pollutants in water or soil environments is considered...

AI Technical Summary

Problems solved by technology

my country is a large agricultural country, and a large amount of agricultural and forestry waste is produced every year. The current cleaning method of these materials is mainly incineration, which not only causes serious pollution to the environment, but also is a great waste of resources. Therefore, how to dispose of biomass waste Harmless treatment and reuse is a key topic of widespread concern in scientific research and industry

However, due to the large amount of impurities contained in biomass raw materials, the carbon adsorption materials directly prepared from biomass have low adsorption efficiency for pollutants, and often need to be further activated and modified to meet the demand.

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