Poly(ethylenimine) modified Punica granatum derived biochar for antibiotic removal: mechanistic insights

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2024-10-08 DOI:10.1007/s42114-024-00990-8

Saima Batool, Muhammad Idrees, Dalal A. Alshammari, A. Alhadhrami, Gaber A. M. Mersal, Deliang Chen, Junguo Xu

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Abstract

A sustainable polymerized base-activated biochar (PBC-B) derived from Punica granatum peel and surface activation and polymerization with branched poly(ethylenimine) were prepared and demonstrated efficient tetracycline (TC) remediation from wastewater. Polymerized acid-activated biochar (PBC-A) and pristine biochar were also evaluated for comparison. The PBC-B exhibited enhanced porous morphology and surface functional groups, effectively improving TC adsorption. Results indicated that PBC-B has a Langmuir adsorption capacity of 295.9 mg g⁻¹ and a partition coefficient of 18.67 mg g⁻¹ µM⁻¹, manifesting that surface activation and polymerization lead to well-developed pore structures. The PBC-B showed a 19.59 and 75.39% improvement in TC adsorption compared to PBC-A and BC, respectively. Adsorption isotherm studies revealed that the Langmuir model described the strong adsorption behavior with a high adsorption capacity (Q_L = 295.9 mg g⁻¹) and R² (0.98) for PBC-B. Kinetic studies indicated that the pseudo-second-order model fits well, with a low sum of squared error values (< 4.4 × 10⁻³) and high R² values (0.99). This study pioneers the use of PBC as an adsorbent with reduced organic compound content while elucidating the TC adsorption mechanism in aqueous phases, marking a significant advancement in the field. Density functional theory evidenced that chemisorption mechanism predominates in the interaction between TC and PBC.

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聚（乙烯亚胺）改性石榴提取物生物炭去除抗生素：机理认识

本研究制备了一种可持续的聚合碱激活生物炭（PBC-B），该生物炭取自石榴皮，并与支链聚（乙烯亚胺）进行表面活化和聚合，结果表明该生物炭可高效修复废水中的四环素（TC）。此外，还对聚合酸活化生物炭（PBC-A）和原始生物炭进行了比较评估。PBC-B 的多孔形态和表面官能团都得到了增强，有效改善了对 TC 的吸附。结果表明，PBC-B 的朗缪尔吸附容量为 295.9 mg g-1，分配系数为 18.67 mg g-1 µM-1，这表明表面活化和聚合导致了孔隙结构的完善。与 PBC-A 和 BC 相比，PBC-B 对 TC 的吸附分别提高了 19.59% 和 75.39%。吸附等温线研究表明，Langmuir 模型描述了 PBC-B 的强吸附行为，具有较高的吸附容量（QL = 295.9 mg g-1）和 R2（0.98）。动力学研究表明，伪二阶模型拟合良好，平方误差之和值较低（< 4.4 × 10-3），R2 值较高（0.99）。该研究开创性地将 PBC 用作有机化合物含量较低的吸附剂，同时阐明了 TC 在水相中的吸附机理，标志着该领域的重大进展。密度泛函理论证明，化学吸附机制在 TC 与 PBC 的相互作用中占主导地位。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.