The current paper is paying attention to the synthesis of a low-cost, abundant and efficient hybrid activated bentonite–alginate composite ABent/A. Hybrid composite morphology was determined through FTIR, XRPD, and pH_PZC. The operational conditions for the retention of two dyes used in the textile industry (methylene blue and crystal violet) from aqueous mediums were evaluated. Results showed that MB and CV adsorbed amount on ABent/A was 780 and 546 mg/g, respectively. Kinetic Lagergren’s and Ho and McKay’s models provide the best result for the MB and CV adsorption on the prepared adsorbent, respectively. Langmuir isotherm model gives the best analyses of the experimentation, justifying a monolayer and a homogeneous nature of adsorption process. Results indicate also that the operational conditions studied affect significantly dyes removal. Reusability study of ABent/A for dyes was also investigated according to the type of desorbing agents. MB regeneration was found 98.92% using hydrochloric acid 0.01 M and CV regeneration percent was 95% using 0.5 M potassium chloride prepared in the mixture ethanol/water (0.5%/0.5%). From the obtained results, hybrid activated bentonite/alginate composites are low-cost, effective and regenerable adsorbent, which give a promising prospect for contaminated wastewaters treatment.

中文翻译：

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杂化活化膨润土/藻酸盐复合材料的合成与表征，以提高其有效去除废水中染料的能力

当前的论文正在关注低成本，丰富和有效的混合活性膨润土-海藻酸盐复合物ABent / A的合成。通过FTIR，XRPD和pH _PZC确定杂化复合物的形态。评估了从水性介质中保留纺织工业中使用的两种染料（亚甲基蓝和结晶紫）的操作条件。结果表明，MBent和A上的MB和CV吸附量分别为780和546 mg / g。动力学Lagergren模型和Ho和McKay模型分别为制备的吸附剂上的MB和CV吸附提供了最佳结果。Langmuir等温模型对实验进行了最佳分析，证明了单层吸附过程的均质性。结果还表明，所研究的操作条件显着影响了染料的去除。还根据脱附剂的类型对ABent / A对染料的可重复使用性进行了研究。使用0.01 M的盐酸发现MB再生率为98.92％，使用0的CV再生率为95％。在乙醇/水（0.5％/ 0.5％）的混合物中制备5 M氯化钾。从获得的结果来看，杂化活化的膨润土/藻酸盐复合材料是低成本，有效和可再生的吸附剂，为污水处理提供了广阔的前景。