The treatment of simulated dyeing wastewater was studied by static adsorption method using biosorbent material dried Potamogeton crispus .The effects of adsorption equilibrium time ,initial pH ,the dosage of adsorbent and initial concentration of methylene blue on the adsorption performance were investi‐gated .The results showed that the removal efficiency of methylene blue reached 95% under the optimized conditions of adsorption equilibrium time 90 min ,initial pH 3 ,the dosage of adsorbent 0 .5 g/100mL and initial concentration of methylene blue 50 mg/L .The methylene blue adsorption onto dried Potamogeton crispus followed the pseudo second -order kinetic model .Thermodynamic studies showed that the adsorp‐tion data was well described by Langmuir adsorption isotherm equation .The maximum adsorption capaci‐ty of methylene blue was 88 .5 mg/g .%采用静态法研究了菹草干体处理模拟染料废水，考察了吸附时间、溶液初始pH值、吸附剂用量以及亚甲基蓝初始浓度等因素对吸附过程的影响．结果表明，菹草干体对亚甲基蓝吸附去除的最佳反应条件为：菹草干体用量为0．5 g／100 m L、吸附反应90 m in、初始浓度为50 m g／L、溶液p H为3．在最佳反应条件下，菹草干体对亚甲基蓝的吸附去除率可达95％．菹草对亚甲基蓝的吸附行为符合拟二级动力学方程；菹草对亚甲基蓝的吸附平衡符合Langmuir等温方程，最大吸附量为88．5 mg／g ．
展开▼
