通过反相悬浮交联法制备研究了一种新型的可生物降解吸附剂:淀粉-腐植酸复合凝胶珠(STHA)。利用ST-HA可有效去除Pb(II)和亚甲基蓝(MB)。Pb(II)和MB在ST-HA上的吸附与溶液p H值有关,在酸性溶液中吸附量下降。Pb(II)和MB的吸附机制也不同,后者除了离子交换外还涉及到p-p相互作用,还观察到S T-H A可以选择性 A novel biodegradable adsorbent, starch-humic acid composite gel beads (STHA), was prepared by reversed-phase suspension cross-linking method. The use of ST-HA effectively removes Pb (II) and methylene blue (MB). The adsorption of Pb (II) and MB on ST-HA is related to the pH value of solution, and the adsorption capacity of Pb (II) and MB is decreased in acidic solution. The adsorption mechanisms for Pb (II) and MB are also different, the latter involving p-p interactions in addition to the ion exchange and also the ability of S T-H A to be selective