摘要：

用磷酸活化山核桃外果皮制备的生物质炭吸附剂处理碱性染料废水,研究了该吸附剂对废水中孔雀石绿(MG)和亚甲基蓝(MB)的吸附性能。结果表明,该吸附剂为高效的碱性有机染料吸附剂,当其投加量为 1 g/L时,318 K条件下对初始质量浓度为300 mg/L的MG的去除率达99.20%,303 K条件下对初始质量浓度为200 mg/L的MB的去除率达98.48%;吸附动力学符合准二级动力学方程;等温吸附模型符合Langmuir方程。

关键词: 山核桃外果皮炭, 吸附, 孔雀石绿, 亚甲基蓝

Abstract:

The biomass carbon adsorbent made from H₃PO₄-activated hickory shell has been used for treating waste-water containing alkaline dyes. The adsorbing capacity of this adsorbent for malachite green(MG) and methylene blue(MB) in wastewater is studied. The results show that this adsorbent is highly efficient for alkaline organic dyes. When the dosage of adsorbent is 1 g/L,under the temperature condition at 318 K,the removing rate of MG whose initial mass concentration is 300 mg/L reaches 99.20%;while under the temperature condition at 303 K,the removing rate of MB whose initial mass concentration is 200 mg/L reaches 98.48%. The adsorption kinetics is in line with pseudo-second-order kinetics equation,while the isothermal adsorption model is in line with Langmuir equation.

Key words: hickory shell biomass carbon, adsorption, malachite green, methylene blue

中图分类号: 

• X703