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锆笼状枣核衍生的蒸汽活化海藻酸钠珠在固定床柱中对布洛芬的吸附效果

Ibuprofen sorptive efficacy of zirconium caged date seed derived steam activated alginate beads in a static bed column.

作者信息

Chakraborty Prasenjit, Halder Gopinath

机构信息

Department of Chemical Engg, National Institute of Technology Durgapur Durgapur-713209 West Bengal India

出版信息

RSC Adv. 2020 Jun 25;10(41):24293-24307. doi: 10.1039/d0ra04265j. eCollection 2020 Jun 24.

Abstract

The sorption capability of zirconium coupled sodium alginate beads of steam activated biochar derived from date seed (Zr(DSPB)Al) was explored towards Ibuprofen (IBP) removal from simulated water solution in a static bed column. The impact of governing variables column bed height (5-25 cm), influent (IBP) concentration (10-30 mg L) and inflow rate (2-6 mL min) was investigated in the present study. The column experimentation reflected that with an increase in column bed length, the breakthrough curve height was increased. The maximum sorbent uptake was found to be 23.33 mg g from an optimal column bed height of 20 cm, influent (IBP) concentration of 30 mg L and inflow rate of 2 mL min with the achievement of 94.86% of IBP removal. The bed depth service model (BDST) was studied to examine the sorbent's efficacy and it was observed that column bed height was one of the effective factors towards effective IBP sorption. The Yoon-Nelson model and Thomas model corroborated extremely well with the experimental findings. The desorption study presented a sorbent efficiency up to 5 cycles for IBP exclusion with 37.59% regeneration of the column. The investigation indicated that the novel sorbent Zr(DSPB)Al with proficient performance could be successfully applied for IBP elimination from aqueous solutions.

摘要

研究了以椰枣籽为原料的蒸汽活化生物炭负载锆的海藻酸钠珠(Zr(DSPB)Al)在静态床柱中对模拟水溶液中布洛芬(IBP)的吸附性能。本研究考察了柱床高度(5 - 25 cm)、进水(IBP)浓度(10 - 30 mg/L)和流速(2 - 6 mL/min)等控制变量的影响。柱实验表明,随着柱床长度的增加,穿透曲线高度增加。在柱床高度为20 cm、进水(IBP)浓度为30 mg/L、流速为2 mL/min的条件下,最大吸附剂吸附量为23.33 mg/g,IBP去除率达到94.86%。研究了床层深度服务模型(BDST)以考察吸附剂的效能,发现柱床高度是有效吸附IBP的有效因素之一。Yoon - Nelson模型和Thomas模型与实验结果吻合得非常好。解吸研究表明,该吸附剂对IBP的排除效率可达5个循环,柱再生率为37.59%。研究表明,新型吸附剂Zr(DSPB)Al性能优异,可成功应用于水溶液中IBP的去除。

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