活性聚丙烯纳米纤维吸附去除2,6-二氯苯酚

Q1 Chemical Engineering
Duduku Krishnaiah , Arswitaa Baskaran , S.M. Anisuzzaman , Reddy Prasad D.M.
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引用次数: 0

摘要

2,6-二氯苯酚是苯酚的一种有机氯化物,由于其极强的腐蚀性和即使在低浓度下也具有毒性,被认为是废水中的新兴污染物之一。采用熔融吹塑活化聚丙烯(PP)纳米纤维作为高分子吸附剂,研究了其对2,6-二氯酚的去除效果。熔喷PP纳米纤维的高表面体积比、高孔隙率、低表面能、低密度和优异的力学特性使其成为一种合适的吸附剂。考察了2,6-二氯酚的初始浓度、聚丙烯纳米纤维的重量、温度和溶液pH对2,6-二氯酚去除率的影响。Langmuir模型最大吸附量为44.44 mg/g,与吸附等温线最吻合。采用扫描电镜(SEM)和傅里叶变换红外光谱(FTIR)对熔融吹制PP纳米纤维吸附前后进行了表征。通过SEM图像证明,吸附后的PP纳米纤维的平均直径增加到7.93 μm。此外,FTIR分析证实了PP纳米纤维表面存在酚类化学物质。拟一阶模型与动力学数据吻合较好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Removal of 2,6-dichlorophenol by adsorption with activated polypropylene nanofiber
2,6-Dichlorophenol is an organochloride of phenol, and it is considered one of the emerging pollutants in wastewater due to its extreme corrosive nature and toxicity even at low concentrations. Melt-blown activated polypropylene (PP) nanofiber is a polymeric adsorbent and it is used to investigate the removal of 2,6-dichlorophenol. The high surface-to-volume ratio, high porosity, low surface energy, low density, and excellent mechanical characteristics of melt-blown PP nanofiber make it a suitable adsorbent. On the removal efficiency of 2,6-dichlorphenol, the influence of the initial concentration of 2,6-dichlorphenol, the weight of PP nanofiber utilized, temperature, and pH of the solution were examined. The Langmuir model, with a maximum adsorption capacity of 44.44 mg/g, was found to be the best match for the adsorption isotherm. Scanning Electron Microscopy (SEM) and Fourier-Transform Infrared Spectroscopy were used to examine melt-blown PP nanofiber before and after adsorption (FTIR). Through SEM images, it was proven that the average diameter of PP nanofiber after adsorption had increased up to 7.93 μm. Furthermore, the existence of phenolic chemicals on the surface of PP nanofiber is confirmed by FTIR analysis spectra. The pseudo-first-order model matched the kinetic data nicely.
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来源期刊
Journal of King Saud University, Engineering Sciences
Journal of King Saud University, Engineering Sciences Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
12.10
自引率
0.00%
发文量
87
审稿时长
63 days
期刊介绍: Journal of King Saud University - Engineering Sciences (JKSUES) is a peer-reviewed journal published quarterly. It is hosted and published by Elsevier B.V. on behalf of King Saud University. JKSUES is devoted to a wide range of sub-fields in the Engineering Sciences and JKSUES welcome articles of interdisciplinary nature.
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