Adsorptive removal of fluoride from aqueous medium using a fixed bed column packed with Zr(IV) loaded dried orange juice residue

The potential of the adsorbent prepared from DOJR marketed as cattle food in Japan was identified as an efficient and low cost adsorbent for fluoride using fixed bed column. DOJR was loaded with Zr(IV) ions to develop active adsorption sites for fluoride. Fluoride adsorption performance of column packed with Zr(IV) loaded DOJR was assessed under variable operating conditions such as Zr(IV) loading temperature, initial fluoride concentration, bed depth, initial pH, and flow rate. Breakthrough curve modeling showed that Thomas and bed depth service time (BDST) models were in good agreement with the experimental data. Application of adsorbent investigated in this study to the treatment of actual waste plating solution containing fluoride ion showed successful removal below acceptable standard in Japan using a fixed bed column, hence, Zr(IV)-DOJR can be expected to be a promising candidate for the treatment waste water containing trace amount of fluoride ion in fixed bed column. (c) 2013 Elsevier Ltd. All rights reserved.

在日本作为牛饲料销售的DOJR制备的吸附剂，其在固定床柱中作为一种高效且低成本的氟化物吸附剂的潜力已被确定。DOJR负载了Zr(IV)离子以形成氟化物的活性吸附位点。在不同的操作条件下，如Zr(IV)负载温度、初始氟化物浓度、床层深度、初始pH值和流速，对填充Zr(IV)负载的DOJR的柱体的氟化物吸附性能进行了评估。穿透曲线模型表明，托马斯模型和床层深度服务时间（BDST）模型与实验数据吻合良好。本研究中所研究的吸附剂应用于处理含氟离子的实际电镀废水时，使用固定床柱可成功将氟化物去除至日本可接受标准以下，因此，Zr(IV)-DOJR有望成为固定床柱中处理含微量氟离子废水的有前途的候选材料。（c）2013爱思唯尔有限公司。保留所有权利。