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首页> 外文期刊>Journal of Hazardous Materials >Fluoride removal from water using activated and MnO_2-coated Tamarind Fruit (Tamarindus indica) shell: Batch and column studies
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Fluoride removal from water using activated and MnO_2-coated Tamarind Fruit (Tamarindus indica) shell: Batch and column studies

机译：使用活化的和MnO_2涂层的罗望子果（Tamarindus indica）外壳从水中除氟：批处理和色谱柱研究

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摘要

The present work is concerned with the defluoridation capacities of activated (ATFS) and MnO_2-coated Tamarind Fruit Shell (MTFS), using batch and column sorption techniques. In the batch technique, the dynamics of fluoride sorption, with respect to pH, [F]o and sorbent doser was studied. The applicability of pseudo-first order for ATFS and Ritchie-second order for MTFS was observed. The kinetics data were found to fit well with Temkin isotherm for ATFS and Langmuir for MTFS. The interaction of co-ions in the defluoridation capacity of the sorbent was studied. Column experiments were carried out under a constant fluoride concentration of 2 mg/1, flow rate and different bed depths. The capacities of the breakthrough and exhaustion points increased with increase in the bed depth for ATFS unlike MTFS. The Thomson model was applied to the column experimental results. The characterization of the sorbents, ATFS and MTFS, was done using the FTIR, SEM and XRD techniques.
机译：当前的工作涉及使用批吸附和柱吸附技术的活化（ATFS）和MnO_2包裹的罗望子果壳（MTFS）的脱氟能力。在分批技术中，研究了氟化物相对于pH值，[F] o和吸附剂添加器的吸附动力学。观察到ATFS的伪一阶和MTFS的里奇二阶的适用性。发现动力学数据与ATFS的Temkin等温线和MTFS的Langmuir非常吻合。研究了钴离子在吸附剂脱氟能力中的相互作用。在2 mg / 1的恒定氟化物浓度，流速和不同的床深度下进行柱实验。与MTFS不同，ATFS的突破点和排气点的容量随床深度的增加而增加。将Thomson模型应用于色谱柱实验结果。使用FTIR，SEM和XRD技术对吸附剂ATFS和MTFS进行表征。

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