Valorization of coffee husks for the sustainable removal of pharmaceuticals from aqueous solutions

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-20 DOI:10.2166/h2oj.2024.102

Valentina Ospina, Valentina Cardozo, Jazmín Porras, N. Acelas, Angélica Forgionny

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引用次数: 0

Abstract

The contamination of wastewater with pharmaceutical compounds represents a growing environmental challenge due to the inefficiency of conventional treatment systems in removing these emerging contaminants. The coffee husk (CH) is a promising bioadsorbent due to its abundant availability as a byproduct of coffee production. This study focuses on using untreated CH as an adsorbent for removing acetaminophen (ACE) and ciprofloxacin (CIP) while exploring the impact of pyrolysis temperature on the adsorption efficiency of these pharmaceutical compounds. The results reveal an excellent CH performance in removing CIP, achieving 64% removal with a maximum adsorption capacity of 37.00 mg/g. Increasing the pyrolysis temperature during the heat treatment of coffee husks significantly affects the adsorption of CIP. This behavior is primarily due to the reduction in functional groups, which are essential for facilitating the adsorption of CIP onto the resulting biochar. Thermodynamic parameters (ΔH° > 0 and ΔG° > 0) indicate that CIP adsorption on CH is an endothermic and not spontaneous process. The removal efficiency of CIP on CH for synthetic wastewater and urine matrices showed that CH can effectively remove CIP from wastewater. Finally, the reuse of CH as a bioadsorbent highlights its potential to contribute to water quality improvement and environmental preservation.

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利用咖啡壳的价值，可持续地去除水溶液中的药物

由于传统处理系统在去除这些新出现的污染物方面效率低下，制药化合物对废水的污染日益成为一项环境挑战。咖啡壳（CH）是一种很有前景的生物吸附剂，因为它是咖啡生产的副产品，来源丰富。本研究的重点是使用未经处理的 CH 作为吸附剂去除对乙酰氨基酚（ACE）和环丙沙星（CIP），同时探索热解温度对这些药物化合物吸附效率的影响。结果表明，CH 在去除 CIP 方面表现出色，去除率达到 64%，最大吸附容量为 37.00 mg/g。在热处理咖啡壳的过程中，提高热解温度会显著影响对 CIP 的吸附。这种行为主要是由于官能团的减少，而官能团对促进 CIP 吸附到生成的生物炭上至关重要。热力学参数（ΔH° > 0 和 ΔG° > 0）表明，CIP 在 CH 上的吸附是一个内热而非自发的过程。合成废水和尿液基质中 CIP 对 CH 的去除率表明，CH 能有效去除废水中的 CIP。最后，CH 作为生物吸附剂的再利用凸显了其在改善水质和保护环境方面的潜力。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.