微波辐射棉秆制备优质活性炭研究

The Research of Preparation for Activated Carbon by Microwave Irradiation from the Haulm of Cotton

研究了以棉秆废料为原料,采用微波辐射氯化锌法制备活性炭的可行性,探讨了微波功率、活化时间及氯化锌浓度对产品活性炭各项指标的影响。得到了微波辐射氯化锌法制备活性炭的最佳工艺:微波功率560W、活化时间6min、氯化锌浓度50%。用此工艺条件制得的活性炭碘吸附值1030 2mg/g、亚甲基蓝脱色力180mL/g、得率36 82%。工艺所需活化时间为传统方法的1/36,产品活性炭吸附性能超过了国家一级标准。该工艺方法为农村棉秆资源的综合开发利用找到了新的途径。

The feasibility of preparation for activated carbon from the haulm of cotton with ZnCl2 microwave irradiation was researched.The effect of microwave power,activation time and ZnCl2 solution concentration on the quality of activated carbon was investigated.The best technology on preparation activated carbon with ZnCl2 by microwave irradiation was obtained:microwave power was 560W,activation time was 6 min,ZnCl2 solution concentration was 50%.The iodine value of activated carbon could reach 1030.2mg/g,the decolorizing capacity for methylene blue was 180ml/g and the yield reach 36.82%.The quality of activated carbon was greater than the state level.The new way of empoldering the haulm of cotton resource in countryside was obtained.