Adsorptive Removal of Ibuprofen, Ketoprofen and Naproxen from Aqueous Solution Using Coconut Shell Biomass

Q3 Environmental Science

Environmental Research, Engineering and Management Pub Date : 2022-07-14 DOI:10.5755/j01.erem.78.2.29695

A. Arinkoola, S. Alagbe, I. Akinwole, Ayobami I Ogundiran, Lawrence Ajayi, O. Agbede, O. Ogunleye

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引用次数: 5

Abstract

The use of commercial activated carbon (AC) to remove organic micropollutants from aqueous solution is expensive and unsustainable. In this study, coconut shell activated carbon (CSAC) was synthesized and applied for the removal of ibuprofen, ketoprofen and naproxen from aqueous solutions. The effects of carbonization and acid activation on the CSAC were studied using Fourier-transform infrared spectroscopy, scanning electron microscope, proximate and ultimate analyses. The influence of initial concentration (200–1000 mg/L), contact time (10–200 min), and temperature (30–60°C) was also investigated. The adsorptive capacity of CSAC for various pollutants was found to increase with concentration up to 150 min. Ibuprofen, ketoprofen and naproxen removal obeyed Langmuir (R2 = 0.9978), Temkin (R2 = 0.9551) and Freundlich (R2 = 0.9879) isotherm, respectively. The kinetic data obtained for various pollutants are best described by the pseudo-first-order model with correlation coefficient values in the range 0.96–0.99. The free energy ( G) values ranged between 1.0 and 9.0 kJ/mol for all the pollutants investigated. The mechanism of adsorption is physical, endothermic, and non-spontaneous. This study shows that CSAC is an effective alternative adsorbent for sequestering mixture of organic pollutants from aqueous solution.

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椰壳生物质吸附去除水溶液中的布洛芬、酮洛芬和萘普生

使用商用活性炭(AC)去除水溶液中的有机微污染物是昂贵且不可持续的。本研究合成了椰壳活性炭(CSAC)，并将其应用于布洛芬、酮洛芬和萘普生的去除。采用傅里叶变换红外光谱、扫描电镜、近似分析和极限分析研究了炭化和酸活化对CSAC的影响。考察了初始浓度(200-1000 mg/L)、接触时间(10-200 min)和温度(30-60℃)对其的影响。对布洛芬、酮洛芬和萘普生的去除分别符合Langmuir (R2 = 0.9978)、Temkin (R2 = 0.9551)和Freundlich (R2 = 0.9879)等温线。得到的各种污染物的动力学数据最好用拟一阶模型来描述，相关系数在0.96 ~ 0.99之间。所有污染物的自由能(G)值均在1.0 ~ 9.0 kJ/mol之间。吸附机理为物理吸附、吸热吸附和非自发吸附。研究表明，CSAC是一种有效的替代吸附剂，可吸附水中混合的有机污染物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental Research, Engineering and Management Environmental Science-Environmental Engineering

CiteScore

2.40

自引率

0.00%

发文量

期刊介绍： First published in 1995, the journal Environmental Research, Engineering and Management (EREM) is an international multidisciplinary journal designed to serve as a roadmap for understanding complex issues and debates of sustainable development. EREM publishes peer-reviewed scientific papers which cover research in the fields of environmental science, engineering (pollution prevention, resource efficiency), management, energy (renewables), agricultural and biological sciences, and social sciences. EREM’s topics of interest include, but are not limited to, the following: environmental research, ecological monitoring, and climate change; environmental pollution – impact assessment, mitigation, and prevention; environmental engineering, sustainable production, and eco innovations; environmental management, strategy, standards, social responsibility; environmental economics, policy, and law; sustainable consumption and education.