Biomolecule-assisted synthesis of magnetic biochar from betel nut husk and iron ore tailings: characterization and arsenic elimination studies

IF 2.8 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2025-06-09 DOI:10.1002/jctb.7906

Rutuja T Kamble, MG Sujana

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引用次数: 0

Abstract

BACKGROUND

Arsenic contamination in drinking water remains a significant global public health issue, necessitating sustainable and efficient removal technologies. In this work, magnetite-biochar composites were synthesized through a green and cost-effective approach using betel nut husk-derived biochar and iron ore tailings, with Hibiscus rosa sinensis leaf extract serving as a natural biosurfactant and reducing agent. The synthesis plan aimed to utilize agricultural and industrial waste materials to fabricate a functionalized magnetic adsorbent with improved physicochemical properties for arsenic species elimination.

RESULTS

The optimized Fe₃O₄@BC composite (Fe:BC ratio = 1:2) demonstrated a substantial BET (Brunauer-Emmett-Teller) surface area of 73 m² g⁻¹. X-ray diffraction patterns confirmed the successful formation of crystalline magnetite nanoparticles anchored to the biochar matrix. Fourier transform infrared and field emission scanning electron microscopy/energy dispersive X-ray spectroscopic analyses evidenced the presence of active functional groups and uniform magnetite dispersion on the Fe₃O₄@BC surface. The green synthesis route, facilitated by hibiscus leaf phytochemicals, contributed to improved nanoparticle stability and surface functionality, enabling efficient arsenic removal from aqueous solutions. Batch experiments confirmed maximum adsorption capacities of 42.74 and 27.62 mg g⁻¹ for arsenic(V) and arsenic(III), respectively. The material demonstrated favourable kinetics, minimal interference from coexisting ions and effective regeneration over three cycles.

CONCLUSION

The environmentally benign synthesis of Fe₃O₄@BC using biomass waste and mine tailings, assisted by plant-derived biomolecules, offers a low-cost, scalable and sustainable adsorbent for arsenic elimination. The material's high surface properties and promising removal performance in real water systems highlight its potential for field-scale applications in water purification. © 2025 Society of Chemical Industry (SCI).

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从槟榔壳和铁矿尾矿中合成磁性生物炭的生物分子辅助：表征和去砷研究

饮用水中的砷污染仍然是一个重大的全球公共卫生问题，需要可持续和有效的去除技术。本研究以槟榔壳生物炭和铁矿尾矿为原料，以芙蓉叶提取物为天然生物表面活性剂和还原剂，采用绿色经济的方法合成了磁铁矿-生物炭复合材料。该合成计划旨在利用农业和工业废料制备一种具有改进物理化学性质的功能化磁性吸附剂，用于消除砷物种。结果优化后的Fe3O4@BC复合材料（Fe:BC比为1:2）的BET （brunauer - emmet - teller）表面积为73 m2 g−1。x射线衍射图证实了晶体磁性纳米颗粒锚定在生物炭基质上的成功形成。傅里叶变换红外和场发射扫描电镜/能量色散x射线光谱分析证明了Fe3O4@BC表面存在活性官能团和均匀的磁铁矿分散。绿色合成路线，由芙蓉叶植物化学物质促进，有助于提高纳米颗粒的稳定性和表面功能，使砷从水溶液中有效去除。批量实验证实，对砷(V)和砷（III）的最大吸附量分别为42.74和27.62 mg g−1。该材料表现出良好的动力学，共存离子的干扰最小，在三个循环中有效再生。结论利用生物质废弃物和矿山尾矿，在植物源性生物分子的辅助下，环境友好地合成Fe3O4@BC是一种低成本、可扩展、可持续的砷去除吸附剂。该材料的高表面性能和在实际水系统中有前途的去除性能突出了其在水净化领域的应用潜力。©2025化学工业学会（SCI）。

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.