用PDF处理含Pb^(2+)、Cu^(2+)重金属离子废水的研究

The Treatment of Waste Water Containing Heavy Metal Ions of Pb^(2+)and Cu^(2+) by PDF Adsorption

利用马铃薯提取淀粉后的废弃物—马铃薯渣制成的新型纤维(PDF)模拟处理了含重金属离子Pb2+、Cu2+的废水,研究了吸附剂用量,吸附时间,废水的pH值,温度等对Pb2+、Cu2+的吸附影响及在含有Pb2+,Cu2+,Cd2+,Cr3+,Na+金属离子的废水中PDF对多种混合金属离子的吸附.结果表明,PDF对Pb2+、Cu2+具有良好的吸附作用,且在多种金属离子混合的废水体系中可选择性地吸附Pb2+.

The Potato Dietary Fiber(PDF) was made from residues after starch had been taken off from potatoes. The fiber was used to test its adsorption to such heavy metal ions as Pb^(2+) and Cu^(2+) in the waste water. The dosage of PDF adsorbent, the time of absorption, pH Value and the temperature were studied along with the waste water containing Pb^(2+), Cu^(2+), Cd^(2+), Cr^(3+) and Na^+ ions in solution. The results have shown that PDF adsorbs Pb^(2+) and Cu^(2+) quite well, and especially it can adsorb Pb^(2+) selectively from the waste water containing Pb^(2+), Cu^(2+), Cd^(2+), Cr^(3+), Na^+ ions.