However, there are also some disadvantages
(1) it is highly corrosive to equipment; (2) it pollutes the environment, etc., which makes the chemical method limited to a certain extent.
www.wyactivatedcarbon.comThere are many researches on activation by adding H3P04 at home and abroad. In China, the development and research work of preparing activated carbon by using phosphoric acid method with wood chips as raw material has been carried out since the end of 1980s，It has been successfully put into industrial application in the 1990s，The mesopore (transition pore) structure of products produced by phosphoric acid activation method is well developed and has wide application fields.Science and the project feasibility study report based on the in-depth market supply and demand analysis, the future price forecasting, the resources supply, construction scale, process route, equipment selection, environmental impact, energy conservation and emissions reduction, investment estimation and fund-raising, profitability and other aspects of scientific research, from the Angle of market, technology and economy, engineering project study and comparative analysis, and after the completion of the project have made the financial, economic and social environment for scientific forecast, for the project decision-making provides a fair and reliable, scientific investment advice.The iodine adsorption value, methylene blue adsorption value, strength and BET specific surface area of GAC were 1020.04mGG, 225mg/g, 88.73% and 1486.48m2/g respectively.
The experimental results show that the impregnation ratio and carbon activation temperature have great effects on the adsorption performance of GAC, while the kneading temperature and impregnation ratio have great effects on the strength of GAC.
bulk powdered activated charcoalBecause the strength of GAC decreases with the increase of impregnation ratio, and the decrease range is large, so the preparation of GAC with compound activator is proposed.
The results show that the composite activator can reduce the impregnation ratio of phosphoric acid to wood chips and improve the strength of granular activated carbon.
At the same time, the composite activator can improve the adsorption performance of GAC.
Therefore, granular activated carbon with good adsorption performance and high strength can be prepared by this method.
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