大洋多金属结核浸出渣动态吸附Cu^(2+)的实验研究

EXPERIMENTAL STUDY ON DYANMIC ADSOPTION OF CU^(2+) WITH OCEANIC POLYMENTALLIC NODULES

实验以大洋多金属结核浸出渣(66%,质量分数)为主要原料、高岭土(21%)为粘结剂、蛭石(13%)为膨胀剂,研制出用于动态吸附废水中重金属离子的浸出渣颗粒。以造粒后的颗粒为吸附剂动态处理含Cu2+的模拟废水,研究发现溶液浓度、流速、pH值对动态吸附效果的影响,选定浸出渣颗粒动态处理重金属废水的工艺参数:造粒后浸出渣颗粒的比表面积为18.61 m2/g,当模拟废水中Cu2+溶液的初始浓度为27 mg/L、pH=5.35、出口流速为10 ml/h时,每克浸出渣颗粒可动态处理模拟废水114.3 ml,处理后溶液中阳离子的浓度≤0.5 mg/L,实验效果明显。

Experimental study is conducted on dynamic adsorption of Cu^2＋ in aqueous solution with the particle of the leaching residue（66 % ）, kaolin（21% ） and vermiculite（13 % ） as raw materials,with the particle surface area of 18.61 m^2/g. The experiment indicates that pH,initial density and velocity of flow of the solution also have a remarkable influence on the results of absorbing. The particle （1 g） absorbs Cu^2＋ from the solution （Cu^2＋=27 mg/L. When the velocity of flow is 10 ml/h）,pH=5.35,the purifying simulation volume is 114.3 ml.