This post has been edited by CLMcar: 07 March 2021 - 10:26 PM
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The significance of Dingxinda activated carbon to the life of the whole world and its enterprise vision https://www.dxdcarbon.com/
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Posted 07 March 2021 - 10:23 PM
In the Study of preparation of activated carbon by chemical activation method, sawdust and coconut shell were used as raw materials, zinc chloride and phosphoric acid were used as activators respectively, activated Carbon was prepared At different impregnation rate ® , activation temperature (t) and activation time (At) . The iodine adsorption value (in.) , methylene blue adsorption value (M. The adsorption values of N and phenol (P. N.). The effects of impregnation rate, activation time and activation temperature on the adsorbability of the product were investigated. The effects of impregnation rate, activation time and activation temperature on the specific surface area and Pore volume of activated carbon were investigated by measuring the specific surface area and pore size distribution of some samples. Activated Carbon was prepared by zinc chloride activation method, the best soaking rate was 100 ~ 150% , the best activation temperature was 500 °C, and the activation time was 60 ~ 90 min. The optimum impregnation rate is 100 ~ 150% . The higher the impregnation rate, the larger the MESOPORE and macropore volume, and the smaller the micropore volume. The activation temperature has little effect on Pore volume. When the soaking rate is 100% and the activation time is 60 Min, the specific surface area of activated carbon reaches its maximum value at 500 °C. When the activation time increases, the Mesopore and macropore volume of activated carbon increase, while the micropore volume decreases. The fixed impregnation rate is 100% and the activation temperature is 500 °c. when the activation time is 90 min, the specific surface area of activated carbon is the largest. Through the orthogonal test, it can be found that the impregnation rate and activation temperature have great influence on the yield of activated carbon, the impregnation rate has the greatest influence on the methylene blue adsorption value of activated carbon, and the activated time has the greatest influence on the phenol adsorption value of activated carbon. When the impregnation rate was 150% and the activation temperature was 600 °C, and the activation time was 60 min, the methylene blue adsorption value of the activated carbon was 343 mg/g. At the same impregnation rate and the activation temperature, the activation time was 120 min, the activated carbon had larger phenol adsorption value.My linkMy link
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