Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China.
Bioresour Technol. 2022 Oct;361:127646. doi: 10.1016/j.biortech.2022.127646. Epub 2022 Jul 19.
Antibiotic contamination in water has been an increasing global concern, and how to effectively remove antibiotics (e.g., oxytetracycline [OTC] hydrochloride) from wastewater becomes imperative. In this study, the biochar derived from an invasive plant (Mikania micrantha Kunth) was synthesized with Zn/Fe- layered double hydroxide (LDH) by co-precipitation method (ZnFe-LDH/MBC) to remove OTC from water. ZnFe-LDH/MBC posed the highest OTC removal performance of 426.61 mg/g. ZnFe-LDH/MBC exhibited stability and efficiency in OTC adsorption at different pH levels and under interfering conditions with co-existing ions, as well as outstanding regeneration capabilities during adsorption-desorption cycles. Furthermore, the removal of OTC by ZnFe-LDH/MBC was mediated by several processes including pore filling, hydrogen bonding force, electrostatic interaction, π-π interaction, as well as complexation. Consequently, ZnFe-LDH/MBC has excellent potential for the purification of OTC pollutants that is low-cost, efficient, and environmentally friendly.
抗生素在水中的污染已经成为一个日益严重的全球性问题，因此如何有效地从废水中去除抗生素（例如盐酸土霉素[OTC]）变得至关重要。在本研究中，通过共沉淀法（ZnFe-LDH/MBC）用 Zn/Fe-层状双氢氧化物（LDH）合成了一种源自入侵植物（微甘菊）的生物炭，用于从水中去除 OTC。ZnFe-LDH/MBC 对 OTC 的去除性能最高，为 426.61mg/g。ZnFe-LDH/MBC 在不同 pH 值和共存离子干扰条件下对 OTC 吸附具有稳定性和高效性，以及在吸附-解吸循环过程中的出色再生能力。此外，ZnFe-LDH/MBC 通过多种过程介导 OTC 的去除，包括孔填充、氢键力、静电相互作用、π-π 相互作用以及络合作用。因此，ZnFe-LDH/MBC 具有去除 OTC 污染物的巨大潜力，这种方法具有成本低、高效和环保的特点。
