The process of fluoride removal from water using an Azospirillum biofertilizer as adsorbent was modeled. Experiments were performed in a column with varying flow rates and bed depths, at constant initial fluoride concentration. The experimental data obtained from the column studies were correlated employing different models: Thomas, Yoon-Nelson, Adams-Bohart, Clark, and BDST (bed depth service time). The Thomas and Yoon-Nelson models were found most suitable for describing the dynamic adsorption process with respect to key operating variables. Breakthrough curves were obtained from the modeled equations. The calculated and modeled breakthrough curves were in agreement with each other.

中文翻译：

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固氮螺菌生物肥对氟离子吸附的研究与建模

对使用固氮螺菌生物肥料作为吸附剂从水中去除氟化物的过程进行了建模。实验在具有不同流速和床层深度的色谱柱中进行，初始氟化物浓度恒定。从柱研究中获得的实验数据使用不同的模型进行关联：Thomas、Yoon-Nelson、Adams-Bohart、Clark 和 BDST（床深度服务时间）。发现 Thomas 和 Yoon-Nelson 模型最适合描述与关键操作变量相关的动态吸附过程。从建模方程获得突破曲线。计算和建模的突破曲线彼此一致。