【摘要】 对改性贻贝壳吸附去除亚甲基蓝的效果进行了研究,考察了改性温度、吸附剂投加量、溶液盐度、吸附剂粒径、吸附温度等条件对亚甲基蓝吸附去除效果的影响。在200~1 060℃条件下对贻贝壳进行了温度改性优化,结果表明,最佳改性温度为550℃。当改性贻贝壳投加量为0.6 g/L时,对亚甲基蓝的去除率达到87%;亚甲基蓝的吸附去除效果随着贻贝壳粒径变小吸附能力略有上升,当粒径小于60目时,吸附能力趋于稳定,对亚甲基蓝的去除率在90%左右;盐度对吸附效果影响较大,亚甲基蓝去除效果受离子强度效应影响随盐度的增加先减小后增大最后到达稳定;而吸附温度对改性贻贝壳的吸附能力的影响较小。更多还原

【Abstract】 The adsorption removal of methylene blue by modified mussel shell was studied,and influencing factors such as modified temperature,adsorbent dosage,solution salinity,sorbent particle size and solution temperature on methylene blue adsorption removal were explored. Mussel shells modified temperature was optimized from 200~1 060 ℃,the result showed that the optimum modified temperature was 550 ℃. When the modified mussel shell dosage is 0.6 g/L,the removal rate of methylene blue could reach 87%. The methylene blue adsorption capacity of mussel shell increased with the decrease of mussel shells particle size,and when the particle size was less than 60 mesh,the adsorption removal efficiency of methylene blue went to stabilized,which was about 90%. The effect of solution salinity on the adsorption was apparently,the removal of methylene blue was decreased firstly,then increased and finally stabilized followed by salinity increased because of the ionic strength,while the solution temperature had less effect on methylene blue removal by modified mussel shells.更多还原