马尾松树皮酯化改性及吸附性能的研究

摘要

Using masson pine bark as raw materials, biological adsorption material was prepared by esterification modification. Bark dissolution characteristics were studied and modified bark’s adsorption of heavy metal chromium was evaluated. The study showed that the better dissolution conditions of bark in ionic liquids were as follows: the heating temperature was 100 ℃ and the heating time was 48 h. The best modified conditions were as follows: the reaction temperature was 100 ℃, the number of maleic anhydride was 1. 5 g and the reaction time was 1 h. It was found that the modified masson pine bark could have good performance to absorb chromiun.%以马尾松树皮为原料,采用酯化法进行改性,制备生物树皮吸附剂,研究树皮溶解特性,并探讨其对重金属铬的吸附性能。研究表明,树皮在离子液体中较优的溶解条件是：加热温度100℃,加热时间为48 h；最佳改性条件为：反应温度100℃,马来酸酐质量1．5 g,反应时间1 h。结果表明,改性后的马尾松树皮具有良好的吸附金属铬的性能。