Abstract In the face of water scarcity and more strict environmental regulation, water treatment is a demand and reuse is being encouraged in diverse production processes. Advanced treatments, such as adsorption, may be indicated for specific and/or recalcitrant contaminants removal, such as dyes, present in textile industries wastewater, for example. However, the conventional adsorbents cost may be unattractive for such a purpose. In this context, bone char, 0.5–1.4 mm particle size, mesoporous structure, produced from tannery, food and cattle breeding waste, was tested to remove crystal violet dye from synthetic effluent, in a lab scale fixed bed adsorption column. A complete removal was observed up to 74 min of column operation. The greatest adsorption capacity (qo = 20.63 mg·g−1) was observed for the lowest flow rate evaluated (Q = 15.4 ± 0.8 mL·min−1) and intermediate bed depth (h = 24 cm) at 27.1 ± 0.9 °C. At the same operational conditions, the experimental breakthrough curve was better predicted by Yan model (qo = 20.42 mg·g−1; a = 1.667; b = 2.93 and R2 = 0.955) compared to Thomas model (qo = 22.44 mg·g−1; kTH = 0.056 mL·mg−1·min−1 and R2 = 0.878).

中文翻译：

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骨炭在连续流动系统中从水溶液中吸附结晶紫

摘要 面对水资源短缺和更严格的环境法规，水处理成为一种需求，并鼓励在不同的生产过程中重复使用。高级处理，例如吸附，可用于去除特定和/或顽固的污染物，例如存在于纺织工业废水中的染料。然而，常规吸附剂的成本对于这样的目的可能没有吸引力。在这种情况下，在实验室规模的固定床吸附柱中，测试了由制革厂、食品和养牛废物产生的 0.5-1.4 毫米粒径、中孔结构的骨炭，以从合成流出物中去除结晶紫染料。观察到完全去除长达 74 分钟的柱操作。在评估的最低流速（Q = 15.4 ± 0. 8 mL·min−1) 和中间床深度 (h = 24 cm) 在 27.1 ± 0.9 °C。在相同的操作条件下，与 Thomas 模型（qo = 22.44 mg·g−）相比，Yan 模型（qo = 20.42 mg·g−1；a = 1.667；b = 2.93 和 R2 = 0.955）更好地预测了实验突破曲线1；kTH = 0.056 mL·mg−1·min−1 和 R2 = 0.878)。