Jilin Jianzhu University, Changchun, China.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2021;56(4):386-393. doi: 10.1080/10934529.2021.1883958. Epub 2021 Feb 9.
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.
本研究采用炉渣去除地下水中的氨氮、亚硝酸盐氮和硝酸盐氮。通过连续时间实验、动力学研究、吸附等温线、pH 值和微观结构的影响，研究了去除的特性。动力学符合准二级模型。氨氮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增殖。等温线数据与朗缪尔等温模型拟合较好。炉渣是一种中孔材料，其圆柱形孔在微观结构中占主导地位。总的来说，炉渣被发现是一种有效的地下水氮净化材料。
