Abstract

The removal of heavy metals from the wastewater solution using a novel zeolitic material was conceived and experimentally probed. The natural zeolite was ground in a planetary ball mill to increase negative surface charge and amorphization of the material as well as a conventional ball mill. The ground materials were used for the removal of heavy metals from the wastewater solution. The maximum removals were found to be 78% for Pb, 67% for Ni and 54% for Cd by using the conventional milled natural zeolitic material at pH 11. However, 93% of Pb, 72% of Ni and 57% of Cd were removed at pH 9 with the novel zeolitic material milled by a planetary ball mill. It was revealed that the novel zeolitic material produced by a planetary ball mill increased the absorption capacity of the heavy metals and reduced the alkali requirement for pH adjustment. The removal order of heavy metals with the novel zeolitic material is determined as follows: \(\mathrm{Pb}> \mathrm{Ni}>\mathrm{Cd}\).

中文翻译：

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使用机械活化的新型沸石材料去除废水溶液中的重金属

摘要

设想并通过实验探索了使用新型沸石材料从废水溶液中去除重金属。天然沸石在行星式球磨机中与传统球磨机一样研磨，以增加材料的负表面电荷和非晶化。研磨材料用于去除废水溶液中的重金属。使用常规研磨的天然沸石材料在 pH 值为 11 时，发现 Pb 的最大去除率为 78%，Ni 为 67%，Cd 为 54%。然而，93% 的 Pb、72% 的 Ni 和 57% 的 Cd 是用行星式球磨机研磨的新型沸石材料在 pH 值为 9 时去除。结果表明，行星式球磨机生产的新型沸石材料提高了重金属的吸收能力，降低了调节 pH 所需的碱量。\(\mathrm{Pb}> \mathrm{Ni}>\mathrm{Cd}\)。