氯化锌活化法制备甘蔗渣活性炭吸附剂

Preparation of Activated Carbon from Bagasse by Activation with Zinc Chloride

采用氯化锌活化法制备了甘蔗渣活性炭吸附剂,并考察了活化剂氯化锌溶液浓度、活化温度和活化时间对吸附剂吸附性能的影响。实验结果表明,氯化锌活化法制备甘蔗渣活性炭吸附剂的最佳工艺条件为:活化温度800℃、氯化锌溶液质量浓度190g/L、活化时间60m in。所得甘蔗渣活性炭吸附剂的得率为30.3%,碘吸附值为1 070m g/g,亚甲基蓝吸附值(以0.1g吸附剂吸附的亚甲基蓝体积计)为15.0mL,达到了GB/T13803.2—1999《木质净水用活性炭》一级品标准(碘吸附值1 000m g/g,亚甲基蓝吸附值9mL)。采用氯化锌活化法制备了甘蔗渣活性炭吸附剂,并考察了活化剂氯化锌溶液浓度、活化温度和活化时间对吸附剂吸附性能的影响。实验结果表明,氯化锌活化法制备甘蔗渣活性炭吸附剂的最佳工艺条件为:活化温度800℃、氯化锌溶液质量浓度190g/L、活化时间60min。所得甘蔗渣活性炭吸附剂的得率为30.3%,碘吸附值为1 070mg/g,亚甲基蓝吸附值(以0.1g吸附剂吸附的亚甲基蓝体积计)为15.0mL,达到了GB/T13803.2—1999《木质净水用活性炭》一级品标准(碘吸附值1 000mg/g,亚甲基蓝吸附值9mL)。

The activated carbon adsorbent was prepared from bagasse by activation with zinc chloride. The effects of zinc chloride concentration, activation temperature and activation time on the adsorption capacity of the adsorbent were studied. The optimal preparation conditions are as follows： activation temperature 800 ℃, zinc chloride mass concentration 190 g/L, activation time 60 rain. The yield of the adsorbent is 30. 2%. The iodine value is 1 070 rag/g, and the methylene blue adsorption is 15.0 mL for 0.1 g adsorbent, which can meet the requirement of the first grade product standard of GB/T 13803.2 - 1999.