Increasing industrialization and extensive use of chemicals by the wide range of human sources of heavy metals contribute to increased impact on environment and human health. The excess concentration of heavy metals causes problems of toxicity and growth inhibition of living things. This research has two parts: first, the optimum dose of chemical coagulants (Fe₂So₄, Fe₂So₃, Al₂So₃ and natural coagulant (Moringa Oleifera seed)) was investigated, also study adsorption with / without coagulant. The natural coagulant (Moringa Oleifera seed) and mixture with carbonized Moringa Oleifera and chemical adsorbent (lead + cadmium) were used in batch reactor in different operation conditions. As shown from the result, this method is successful for removing lead more than cadmium due to the characteristics of metals, and also the adsorption with coagulant has the best results than without coagulant. When using Moringa Oleifera as adsorbent and coagulant for lead removal, the adsorbent dose for the best operation condition is 0.45 mg, pH 7, lead concentration 0.5 mg at normal temperature. But when using Moringa Oleifera as adsorbent only, adsorbent dose for the operation conditions is 1 mg, pH 7, lead concentration 0.25 mg at normal temperature.

中文翻译：

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最佳结合吸附剂（化学和天然）混凝工艺以去除废水中的一些重金属

人类广泛的重金属来源的日益工业化和化学物质的广泛使用，对环境和人类健康的影响日益增加。重金属的过量浓度引起毒性和生物生长抑制的问题。这项研究分为两个部分：首先，研究了化学混凝剂（Fe ₂ So ₄，Fe ₂ So ₃，Al ₂ So ₃和天然混凝剂（辣木种子）的最佳剂量），还研究了有/无凝结剂的吸附。天然凝结剂（辣木种子）以及与碳化辣木的混合物在不同的操作条件下，间歇式反应器中使用了化学吸附剂（铅+镉）。从结果可以看出，由于金属的特性，该方法成功地去除了镉以外的铅，而且与不使用凝结剂相比，使用凝结剂的吸附效果最佳。当使用辣木作为吸附剂和凝结剂去除铅时，在最佳温度下，最佳操作条件的吸附剂剂量为0.45 mg，pH 7，铅浓度为0.5 mg。但是当仅使用辣木作为吸附剂时，在正常条件下，操作条件下的吸附剂剂量为1 mg，pH 7，铅浓度0.25 mg。