净水厂干化铝污泥对水中Pb2+和Cu2+的吸附研究

马晨阳,段润斌,杜震宇

Adsorption of Pb2+ and Cu2+ in water by dried alum-sludge from a water treatment plant

Chenyang Ma,Runbin Duan,Zhenyu Du

表2 准一级和准二级动力学模型拟合参数

模型 类型 重金属 离子 表达式 k2 k3 qe/ (mg·g-1 R2 准一级 动力学 Pb2+ log(qe-qt) = -0.440t+1.938 1.012 — 86.68 0.885 Cu2+ log(qe-qt) = -0.387t+1.532 0.891 — 34.02 0.984 准二级 动力学 Pb2+ t/qt=0.006 7t+ 0.002 9 — 0.016 149.32 0.997 Cu2+ t/qt=0.016 5t+ 0.006 2 — 0.044 60.61 0.999