丝瓜络的化学改性及其对铜离子吸附性能研究

Study on Chemical Modification of Loofah Sponge and Its Adsorption Properties for Cu (Ⅱ)

以丝瓜络为基础原料,经皂化和柠檬酸化后制备成化学改性的丝瓜络生物吸附剂,研究其对Cu^2+的吸附性能。结果表明,在pH为6.0、Cu^2+初始质量浓度为50 mg/L、吸附时间为2 h的条件下,该生物吸附剂对Cu^2+吸附率最高,为76.4%。吸附过程遵循准二级动力学模型,符合Langmuir方程。

Based on luffa sponge original material,after saponification and citration,a chemically modified loofah biosorbent was prepared.The adsorption characteristic of copper ions was studied.The result showed that under the condition of pH 6.0,Cu(Ⅱ)initial mass concentration of 50 mg/L and adsorption time was 2 h,the maximum adsorption rate was 76.4%.The adsorption process followed quasi-secondary kinetic model and was consistent with the Langmuir equation.