To study the adsorption effect of zeolite powder on heavy metal copper, the indoor test is carried out. And the natural zeolite powder, 4-A zeolite powder and modified zeolite powder based on the natural zeolite powder made by the high temperature roasting with fly ash as adsorbent are selected for static adsorption of heavy metal Cu2+. In order to verify the ability of adsorption removal of Cu2+, cement is added as adsorbent. The static adsorption experiment shows that the adsorption capability for the Cu2+ is as follows: 4-A zeolite powder ≈ modified zeolite powder > natural zeolite powder > > cement. Considering the economic factors and preparation technology, the modified zeolite powder is the best choice to removing Cu2+. The optimum content of modified zeolite powder removal Cu2+ is:2 g: 100 mg/L. The pH between 5-8 is better for the adsorption.%为了研究沸石粉对重金属铜的吸附效果,采用室内试验方法,选取天然沸石粉、4A沸石粉以及在天然沸石粉的基础上添加粉煤灰经高温焙烧制成的改性沸石粉作为吸附剂对重金属Cu2+进行静态吸附试验,为了对比验证水泥吸附去除Cu2+的能力,添加了水泥作为吸附剂.通过室内静态吸附试验发现,四者吸附Cu2+能力大小为4A沸石粉≈改性沸石粉>天然沸石粉水泥;考虑到制备工艺及经济因素,改性沸石粉是吸附去除Cu2+的最佳选择;改性沸石粉去除Cu2+的最佳掺量为2 g:100 mg/L;pH值在5~8之间沸石粉吸附Cu2+的效果较好.
展开▼
