对荸荠皮渣进行改性：用环氧氯丙烷进行醚化，二甲胺进行胺化。得到的改性荸荠皮渣进行染料吸附，分别就温度、pH和浓度进行吸附研究。并对改性的变化进行了初步研究。结果表明：改性荸荠皮渣对三种染料（直接大红4B、活性深蓝B、还原黄G）具有显著的吸附作用，100 mg/L浓度下，其最佳条件：50 ℃，非碱性，吸附率达到100%；除还原黄G外，其他两种色素在300 mg/L时有280 mg/g以上的吸附量；红外图谱的相关吸收峰的变化说明荸荠皮渣纤维素发生了醚化和胺化的改性反应；扫描电镜分析表明皮渣纤维素表面发生了显著的变化，说明发生了剧烈的改性化学反应。

The Chinese water chestnut peel dreg was modified through epoxidation and amination to prepare a new dye sorption agent. The effects of temperature, pH and concentration on dye sorption were studied. The results showed that the absorption effect of modified products with dye waste was significant at the concentration of 100 mg/L, and absorption temperature 50 ℃ under non-alkaline environments. Under the optimum conditions, the absorption rate was about 100%. Except vat yellow G, the adsorptive capacity of the tested dyes with the concentration of 300 mg/L was about 280 mg/L. FT-IR analysis indicated that the etherification and amination reactions took place on the Chinese water chestnut. SEM analysis showed that the surface of cellulose changed a lot which indicated it was result from chemical modification.

广东省部产学研合作项目（2007B090100009）；粤港关键领域重点突破项目（2007A020901003、2008A02400003）