以稻草为原料,经粉碎、筛分及蒸馏水浸泡预处理,初步确定了吸附铜离子的条件,探讨了经过硫酸、碱处理的改性稻草的吸附效果,并采用紫外-可见分光光度计测定其吸附量.实验结果表明:粒径为0.1～0.2 mm的稻草颗粒经水浸泡4h,在35℃吸附2.5h,吸附量可达最大值；经硫酸处理后,稻草颗粒对铜离子的吸附性能得到改善,其吸附量大于未改性稻草颗粒的吸附量；选择0.1～0.2 mm的稻草颗粒,用水浸泡4h并用丙酮脱蜡处理,然后分别用硫酸浸泡4h、NaOH浸泡8h,在35℃吸附2.5h,吸附量达到4.7 mg/g.
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