Functionalized construction of highly aromatic condensed graphitized biochar for tetracycline adsorption

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation Pub Date : 2025-02-01 DOI:10.1016/j.eti.2024.104002

Xiaotong Zhang , Jinju Hou , Tong Cai , Shudong Zhang , Lichun Shen , Qiuzhuo Zhang

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Abstract

Designing biochar for the efficient removal of specific pollutants remains a significant challenge. In this work, a graphitized biochar with large carbon clusters (HBC700) was synthesized specifically for the removal of tetracycline. HBC700 exhibited outstanding adsorption performance, with a maximum adsorption capacity of 257.04 mg·g⁻¹ , which is 4.72 times that of the pristine biochar. The superior performance is attributed to its low electrical resistance, which facilitates electron transfer at the interface, enabling rapid and efficient tetracycline removal. After tetracycline adsorption, the structure of HBC700 became more ordered, forming a stable honeycomb arrangement. HBC700 also demonstrated high regeneration stability, maintaining a 94.85 % removal rate after five cycles, and achieving 100 % removal after H₂O₂ purification. Furthermore, HBC700 achieved over 98 % tetracycline removal in both tap water and wastewater, highlighting its potential for real-world applications.

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高芳香缩合石墨化生物炭吸附四环素的功能化结构

设计有效去除特定污染物的生物炭仍然是一个重大挑战。本研究合成了一种具有大碳团簇的石墨化生物炭（HBC700），专门用于去除四环素。HBC700表现出优异的吸附性能，其最大吸附量为257.04 mg·g⁻¹ ，是原始生物炭的4.72倍。优越的性能归功于其低电阻，这有利于在界面上的电子转移，从而实现快速有效的四环素去除。吸附四环素后，HBC700结构更加有序，形成稳定的蜂窝状排列。HBC700也表现出很高的再生稳定性，经过5次循环后，去除率保持在94.85 %，经过H₂O₂净化后去除率达到100% %。此外，HBC700在自来水和废水中都实现了98% %以上的四环素去除率，突出了其在实际应用中的潜力。

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来源期刊

Environmental Technology & Innovation Environmental Science-General Environmental Science

CiteScore

14.00

自引率

4.20%

发文量

435

审稿时长

74 days

期刊介绍： Environmental Technology & Innovation adopts a challenge-oriented approach to solutions by integrating natural sciences to promote a sustainable future. The journal aims to foster the creation and development of innovative products, technologies, and ideas that enhance the environment, with impacts across soil, air, water, and food in rural and urban areas. As a platform for disseminating scientific evidence for environmental protection and sustainable development, the journal emphasizes fundamental science, methodologies, tools, techniques, and policy considerations. It emphasizes the importance of science and technology in environmental benefits, including smarter, cleaner technologies for environmental protection, more efficient resource processing methods, and the evidence supporting their effectiveness.