One of the environmental issues is the release of heavy metal ions into groundwater, in which finding a cost-effective solution is crucial. In this study, lead as a toxic heavy metal cation was adsorbed by two low-cost industrial products of ground granulated blast-furnace slag (GGBFS) and phosphorus slag (PS). Both adsorbents were characterized by various analyses. The response surface methodology (RSM) based on the central composite design (CCD) method is employed to compare the performance of both adsorbents in Pb(II) removal from an aqueous solution. The experiment design was performed by considering three factors of initial Pb(II) concentration (20–100 mg.L⁻¹), rotation rate (15–195 rpm), and adsorbent weight (0.1–2.1 g) at five levels. From the RSM predictions, the maximum adsorption capacity was obtained at 0.1 g, 100 mg.L⁻¹, and 195 rpm. Based on the adsorption capacity data, GGBFS was more efficient than PS adsorbent in Pb(II) removal under the same conditions. The most influential parameter on the adsorption capacity was the adsorbent weight, and the other parameters had no significant effects. The influence of rotation rate could be observed only at low adsorbent weights. Two correlations are developed by taking into account the interaction effects between the studied parameters that fitted well the experimental data with R²-values of 0.986 and 0.993 for GGBFS and PS, respectively. The statistical parameters and plots were also reported for the adsorption capacity of the both adsorbents.

环境问题之一是将重金属离子释放到地下水中，在其中寻找具有成本效益的解决方案至关重要。在这项研究中，作为有毒重金属阳离子的铅被磨碎的高炉矿渣（GGBFS）和磷渣（PS）两种低成本工业产品吸附。两种吸附剂的特征均经过各种分析。基于中央复合设计（CCD）方法的响应面方法（RSM）用于比较两种吸附剂从水溶液中去除Pb（II）的性能。通过考虑初始Pb（II）浓度（20–100 mg.L ^-1）的三个因素进行实验设计），转速（15-195 rpm）和吸附剂重量（0.1-2.1 g）五个等级。根据RSM预测，在0.1g，100mg.L ^-1和195rpm下获得最大吸附容量。根据吸附量数据，在相同条件下，GGBFS在去除Pb（II）方面比PS吸附剂更有效。对吸附容量影响最大的参数是吸附剂的重量，其他参数没有显着影响。仅在低吸附剂重量下才能观察到转速的影响。通过考虑所研究参数之间的相互作用效应来建立两个相关性，该参数与R ²很好地拟合了实验数据-GGBFS和PS的值分别为0.986和0.993。还报道了两种吸附剂的吸附容量的统计参数和曲线。