The current experiment investigated the fluoride sorptive efficacies of immobilized beads of zeolite NaA and Nostoc sp. (BTA394) from simulated wastewater in column reactor. Influence of crucial kinetic parameters viz. initial concentration (10, 15, and 20 mg/L), bed height (4, 6, and 8 cm) and flow rate (2, 4, and 6 ml/min) on F⁻ uptake was examined. Influence of these parameters on breakthrough curves was also determined. These breakthrough curves were further estimated by Adams–Bohart's and Thomas models. Spent column was eluted with 0.01 M NaCl, Ca(OH)₂, Na₂SO₄, or NaOH solution to assess column regeneration efficacy. The Thomas model satisfactorily explained the sorption dynamics but Adams–Bohart model could only explicate preliminary portion of the column sorption mechanism. The exhaustion and breakthrough time shortened with increased flow rate, decreased bed height and increased F⁻ concentration. Safe disposal of spent biosorbents were also performed. From the results obtained, it can be said that these biosorbents could be used effectively in treatment of simulated wastewater in continuous flow, although further experiments are being carried out to assess their defluoridation capabilities for real wastewater in large‐scale operations.

中文翻译：

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固定化NaA和Nostoc sp。沸石珠对氟化物的生物吸附实验研究。（BTA394）使用连续流系统

目前的实验研究了固定化的NaA和Nostoc sp。沸石微珠的氟化物吸附效果。（BTA394）来自柱反应器中的模拟废水。关键动力学参数的影响。初始浓度（10,15和20mg / L），床高度（4,6，和8厘米）和流速（2，4，和6毫升/分钟）F上^-摄取检查。还确定了这些参数对穿透曲线的影响。这些突破曲线由Adams–Bohart和Thomas模型进一步估计。用0.01 M NaCl，Ca（OH）₂，Na ₂ SO ₄洗脱用过的柱子或NaOH溶液以评估色谱柱再生效果。Thomas模型令人满意地解释了吸附动力学，但是Adams–Bohart模型只能说明色谱柱吸附机理的初步部分。用尽和具有增加的流率缩短突破时间，降低的床高度和增加的˚F ^-浓度。还可以安全处理用过的生物吸附剂。从获得的结果来看，可以说这些生物吸附剂可以有效地用于连续流模拟废水的处理，尽管正在进行进一步的实验以评估它们在大规模生产中对实际废水的脱氟能力。