Study On The Preparation And Application Of Activated Carbon Of Xinjiang Thin-skinned Walnut Shell

In this study, thin walnut shell as raw material in Xinjiang, respectively, microwave-zinc chloride activation and microwave-Preparation of phosphoric acid activation of two thin walnut shell activated carbon, activated carbon was first discussed the impact of the rate of methylene blue and iodine adsorption value of the various preparation conditions, and then determined by response surface experiment walnut shell activated carbon prepared by the optimal process parameters through the pore distribution and pore size analysis, to microporous activated carbon-based thin walnut shell; finally produced a-thin shell activated carbon for the apple walnut Adsorption effect of juice.The results are as follows:(1) Microwave-Preparation of thin zinc chloride activated carbon from walnut shellsSingle factor experiment to explore the drying temperature, drying time, chloride concentrations than the liquid, soaking time ultrasonic, microwave fire, radiation time on the performance of activated carbon, zinc chloride and an important factor in selecting the concentration of solid to liquid ratio, microwave, fire and radiation time of methylene blue value of the response value for the response surface experiments, the microwave-Preparation of thin zinc chloride activated carbon from walnut shells optimum conditions are: concentration of zinc chloride 53%, high microwave fire fire, radiation time 19min, solid to liquid ratio 1:9 for activated carbon preparation, then the value of methylene blue up 11.36 mL/0.1g, basically consistent with the theoretical prediction, the value of optimization process is not increased more than 1.23 times. Pore distribution and pore size analysis show that the prepared activated carbon derived mainly microporous based.(2) Microwave-Activated carbon prepared thin walnut shellInvestigated by single factor experiments drying temperature, drying time, acid concentration, solid to liquid ratio, soaking time ultrasonic, microwave fire, radiation time on the performance of activated carbon, and then select the important factors in acid concentration, solid to liquid ratio, microwave firepower and radiation time of methylene blue value of the response value for the response surface experiments, the microwave-Activated carbon prepared thin walnut shell the optimum conditions were:44% phosphoric acid concentration, microwave fire in the fire, and radiation time 18min, solid to liquid Preparation for activated carbon than 1:7, the value of methylene blue at this time up to 10.12 mL/0.1g, basically consistent with the theoretical prediction, the value of optimization process is not increased more than 1.08 times.(3) thin walnut shell activated carbon adsorption effect of apple juiceUsing zinc chloride activated carbons prepared apple juice Adsorption. Experimental results show that the amount of active carbon was 2%, marking time for 70min, bleaching temperature was 50℃.