The removal of tetracycline from water using biochar produced from agricultural discarded material

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment Pub Date : 2021-01-10 DOI:10.1016/j.scitotenv.2020.141755

John Hoslett , Heba Ghazal , Evina Katsou , Hussam Jouhara

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引用次数: 84

Abstract

An issue of significant importance worldwide is the contamination of water with antibiotics giving rise to antibiotic resistance in the environment. Antibiotics such as tetracycline are widely used in agriculture, as such they can pollute water courses, providing a means by which environmental bacteria can evolve antibiotic resistance genes. Biochar can form part of a solution as it is a well-known adsorbent. This material can be efficient in the adsorption of a wide range of pollutants and is inexpensive. An innovative heat pipe reactor was used to produce biochar from excess food and garden materials. This biochar was characterised using scanning electron microscopy with energy dispersive X-ray analyser (SEM–EDAX), Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The biochar produced had an adsorption capacity between 2.98 mg/g and 8.23 mg/g for initial tetracycline concentrations of 20 mg/l and 100 mg/l, respectively. The Freundlich isotherm provided the best fit to the experimental data. Kinetics examination revealed a rapid adsorption of tetracycline during the initial stages. The Elovich equation fitted the experimental data well. This adsorbent could therefore be produced at the site of an agricultural enterprise through the pyrolysis of agriculture waste and then used to reduce the infiltration of antibiotics into the environment.

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利用农业废弃材料生产的生物炭从水中去除四环素

世界范围内一个非常重要的问题是抗生素污染水，导致环境中的抗生素耐药性。四环素等抗生素在农业中广泛使用，因此它们可以污染水道，为环境细菌进化出抗生素抗性基因提供了手段。生物炭可以作为溶液的一部分，因为它是一种众所周知的吸附剂。这种材料可以有效地吸附各种污染物，而且价格低廉。一个创新的热管反应器被用来从多余的食物和园艺材料中生产生物炭。利用扫描电子显微镜、能量色散x射线分析仪(SEM-EDAX)、傅里叶变换红外光谱(FTIR)和拉曼光谱对该生物炭进行了表征。制备的生物炭对四环素初始浓度为20 mg/l和100 mg/l的吸附量分别为2.98 ~ 8.23 mg/g。Freundlich等温线最适合实验数据。动力学检查显示，在初始阶段，四环素的快速吸附。Elovich方程与实验数据拟合较好。因此，这种吸附剂可以在农业企业现场通过对农业废弃物的热解生产，然后用于减少抗生素对环境的渗透。

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来源期刊

Science of the Total Environment 环境科学-环境科学

CiteScore

17.60

自引率

10.20%

发文量

8726

审稿时长

2.4 months

期刊介绍： The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.