摘要
将芦竹与环氧氯丙烷、乙二胺、三乙胺反应,合成出一种新型吸附剂。研究了改性芦竹对磷酸根的动态吸附及脱附再生效果,分别考察了在动态吸附、脱附再生过程中各种因素的影响。实验结果表明:与改性前相比,芦竹的吸附性能有了很大提高。随着KH2PO4溶液质量浓度的增加,改性芦竹吸附磷酸根至饱和的时间缩短,动态吸附的穿透点提前;随着KH2PO4溶液流速增大,改性芦竹对磷酸根的去除率降低;在pH为5.0时,吸附效果最好;脱附再生实验中,分别选用0.01mol/LNaCl溶液、HCl溶液和NaOH溶液做脱附剂进行脱附可以得到较好的脱附效果。
The giant reed（GR）was modified for the removal of phosphate by reacting with epichlorohydrin,ethylenediamine（EDA）and triethylamine.The factors influencing dynamic adsorption and desorption were investigated and the re-adsorption effects of phosphate were tested.The results showed that the adsorption capacity of the modified giant reed greatly increased much,compared with giant reed.A shorter breakthrough time was found in a higher concentration of phosphate and the phosphate removal in solution decreased with increasing flow velocity.The effective pH for phosphate removal was 5.0.The 0.01 mol/L NaCl,HCl and NaOH solutions had good desorption capacities.
出处
《山东大学学报（工学版）》
CAS
北大核心
2010年第2期105-109,共5页
Journal of Shandong University（Engineering Science）
基金
国家自然科学基金资助项目(50878121)
山东省自然科学基金资助项目(2006GG2206007)
山东省博士后创新基金资助项目(200802020)
关键词
改性芦竹
磷酸根
动态吸附
动态脱附
吸附量
脱附率
modified giant reed
phosphate
dynamic adsorption
dynamic desorption
adsorptive capacity
desorption rate
