Abstract

In this study the novel use of scoria to remove ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen from groundwater. The experiments were conducted on connect time, kinetics studies, adsorption isotherms, effect of pH and microstructure, so that the characteristics of removal were studied. The kinetics followed the pseudo-second order model. The rate of ammonia nitrogen adsorption was mainly controlled by intramolecular proliferation. The adsorption process for nitrite nitrogen and nitrate nitrogen was divided into the boundary layer diffusion and intramolecular proliferation. The isotherm data closely fitted the Langmuir isotherm models. Scoria is a mesoporous material whose cylindrical-shaped pores are dominating in microstructure. Overall, scoria was found to be an effective material for nitrogen purification of groundwater.

摘要

在这项研究中，利用氧化渣去除地下水中的氨氮，亚硝酸盐氮和硝酸盐氮的新方法。对连接时间，动力学研究，吸附等温线，pH值和微观结构的影响进行了实验，从而研究了其去除特性。动力学遵循伪二级模型。氨氮的吸附速率主要受分子内增殖控制。亚硝酸盐氮和硝酸盐氮的吸附过程分为边界层扩散和分子内扩散。等温线数据非常符合Langmuir等温线模型。天蝎座是中孔材料，其圆柱形孔在微观结构中占主导地位。总的来说，发现矿渣粉是用于地下水氮气净化的有效材料。