ADSORPTION STUDIES OF ZINC, COPPER, AND LEAD IONS FROM PHARMACEUTICAL WASTEWATER ONTO SILVER MODIFIED CLAY ADSORBENT

Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE Pub Date : 2022-03-20 DOI:10.48141/sbjchem.21scon.10_abstract_ajala.pdf

M. Ajala, A. Abdulkareem, A. Kovo, J. Tijani, Ayomide Samuel Adeyemi

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引用次数: 1

Abstract

Clay-supported silver nanoparticles were green synthesized using the aqueous leaf extract of Parkia biglobosa. The phytochemical analysis and FTIR results of the Parkia biglobosa showed that the leaf contains phenol, tanning, and flavonoids, which act as reducing, capping, and stabilizing agents required for the synthesis of the silver nanoparticles. The prepared adsorbent has good morphology, is rich in silica, and contains functional groups suitable for heavy metal binding. The adsorptions of Zn, Cu, and Pb from pharmaceutical wastewater onto the silver-modified clay were studied as an adsorbent dosage and contact time. From the percentage removal results obtained, the adsorbent had up to 99.96%, 99.5%, and 99.44% removal efficiency for Zn, Pb, and Cu, respectively. The present work shows that the synthesized silver nanoparticles supported on local clay can be used as a potentially low-cost adsorbent to remove heavy metal ions from industrial wastewater.

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银改性粘土吸附剂对制药废水中锌、铜、铅离子的吸附研究

以大叶Parkia bilobosa叶片水提物为原料，绿色合成了粘土载银纳米颗粒。植物化学分析和红外光谱结果表明，大叶Parkia bilobosa叶片含有酚、鞣质和类黄酮，它们是合成纳米银所需的还原、封盖和稳定剂。所制备的吸附剂具有良好的形貌，富含二氧化硅，并含有适合重金属结合的官能团。研究了银改性粘土对制药废水中锌、铜、铅的吸附性能，考察了吸附剂用量和接触时间。结果表明，该吸附剂对Zn、Pb、Cu的去除率分别达到99.96%、99.5%、99.44%。本研究表明，合成的银纳米颗粒可以作为一种潜在的低成本吸附剂，用于去除工业废水中的重金属离子。

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Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE

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