利用具有成本效益的生物炭-羟基磷灰石复合材料高效去除新出现的污染物土霉素

IF 1.8 4区 工程技术 Q3 Chemical Engineering Asia-Pacific Journal of Chemical Engineering Pub Date : 2024-07-30 DOI:10.1002/apj.3124
Quang Minh Tran, Phuong Thu Le, Thu Phuong Nguyen, Hong Nam Nguyen, Thi Hai Do, Trung Dung Nguyen, Thi Mai Thanh Dinh
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引用次数: 0

摘要

生物炭(BC)和羟基磷灰石(HAp)具有吸附能力强、多孔结构、比表面积大、化学性质稳定、无毒、溶解度低等特点,因此被广泛应用于环境修复领域。将 BC 和 HAp 结合在一起是一种绿色、有效的策略,可制造出对废水处理具有协同作用的新型吸附剂(BCH)。本研究采用湿法浸渍法合成了从磷灰石矿石和澳洲坚果壳中提取的 BCH 复合材料,用于去除水溶液中的土霉素(OTC)。重量比为 10:1 的 BC-HAp 复合材料是去除 OTC 最有效的材料。在测试的四种模型(Freundlich、Langmuir、Temkin 和 Redlich-Peterson)中,Redlich-Peterson 模型的相关系数最高。用 Langmuir 等温线计算的最大吸附容量为 49.59 毫克 g-1。研究发现,吸附过程受溶液 pH 值的影响很大。OTC 在纳米复合材料上的吸附主导机制可能是静电吸引、氢键形成、表面络合或离子交换。因此,BCH 复合材料在以经济、环保的方式去除 OTC 污染物方面显示出巨大的潜力。
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Efficient removal of emerging pollutant oxytetracycline by cost‐effective biochar–hydroxyapatite composite
Biochar (BC) and hydroxyapatite (HAp) are widely used in environmental remediation due to their high adsorption capacity, porous structure, large specific surface area, chemical stability, non‐toxicity, and low solubility. Combining BC and HAp is a green and effective strategy for creating new adsorbents (BCH) that have a synergistic impact on wastewater treatment. In this study, BCH composites derived from apatite ore and macadamia nut shells were synthesized by the wet impregnation method to remove oxytetracycline (OTC) from aqueous solutions. The BC‐HAp composite with a ratio of 10:1 (by weight) was the most effective material for removing OTC. The Redlich–Peterson model achieved the highest correlation coefficient among the four models tested (Freundlich, Langmuir, Temkin, and Redlich–Peterson). The maximum adsorption capacity calculated with the Langmuir isotherm was 49.59 mg g−1. It was found that the adsorption process was significantly affected by the solution pH. The bipolar form of the drug was found to be OTC±, and the adsorption was most effective in solutions with a pH of 6. The OTC adsorption dominant mechanisms on nanocomposites could be electrostatic attraction, hydrogen bonding formation, surface complexation, or ion exchange. Therefore, the BCH composite showed great potential for removing OTC pollutants in a cost‐effective, and environmentally friendly manner.
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来源期刊
Asia-Pacific Journal of Chemical Engineering
Asia-Pacific Journal of Chemical Engineering 工程技术-工程:化工
CiteScore
3.50
自引率
11.10%
发文量
111
审稿时长
2.8 months
期刊介绍: Asia-Pacific Journal of Chemical Engineering is aimed at capturing current developments and initiatives in chemical engineering related and specialised areas. Publishing six issues each year, the journal showcases innovative technological developments, providing an opportunity for technology transfer and collaboration. Asia-Pacific Journal of Chemical Engineering will focus particular attention on the key areas of: Process Application (separation, polymer, catalysis, nanotechnology, electrochemistry, nuclear technology); Energy and Environmental Technology (materials for energy storage and conversion, coal gasification, gas liquefaction, air pollution control, water treatment, waste utilization and management, nuclear waste remediation); and Biochemical Engineering (including targeted drug delivery applications).
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