Mixing the Scenedesmus species with nanoclay and immobilizing in sodium alginate was evaluated as a sustainable treatment method for removing nitrate, atrazine, and metals from groundwater. Gel beads containing the hybrid mixture removed 100% of 10 mg/L N nitrate and 98% of 100 µg/L atrazine from synthetic groundwater in three days. The optimal amount of nanoclay was found to be 0.30 mg per bead. The experimental data fit well into a Freundlich adsorption isotherm and followed pseudo first-order kinetics. When tested in actual groundwater, 91% of nitrate and 100% of Cr, Se, and V were eliminated in three days without need for any nutrients or carbon source. Immobilizing algal beads embedded with nanoclay is a natural, low-cost alternative for groundwater treatment. The gel beads can be reused for at least two cycles without a compromise in performance. They are water-insoluble, easy to harvest, and offer high removal efficiency.

中文翻译：

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固定化纳米粘土-藻类混合物处理污染地下水的混合生物吸附方法

混合场景具有纳米粘土并固定在藻酸钠中的生物物种被评估为从地下水中去除硝酸盐，at去津和金属的可持续处理方法。含有杂化混合物的凝胶珠在三天内从合成地下水中去除了100％的10 mg / LN硝酸盐和98％的100 µg / L阿特拉津。发现纳米粘土的最佳量为每珠0.30 mg。实验数据非常适合Freundlich吸附等温线，并遵循拟一级动力学。在实际的地下水中进行测试时，三天内消除了91％的硝酸盐和100％的Cr，Se和V，而无需任何营养或碳源。固定嵌入纳米粘土的藻珠是用于地下水处理的一种天然，低成本的替代方法。凝胶珠可以重复使用至少两个周期，而不会影响性能。