Valorization of oil palm fiber waste into mesoporous silica for selective removal of heavy metals from industrial wastewater

IF 3.9
Siti Salamah , Totok Eka Suharto , Ilham Mufandi , Zian Prizki Utama , Muhammad Hikmal Firdausya
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引用次数: 0

Abstract

The increasing need for sustainable waste management and circular material use has encouraged research into converting agricultural residues into high-value functional materials. This study explores the valorization of oil palm fiber (OPF) waste for the production of mesoporous silica through sequential acid-alkali treatment and thermal calcination at 500 °C and 600 °C. The optimized silica synthesized at 600 °C exhibited a surface area of 138.3 m²/g and a pore diameter of 16.4 nm, indicating a mesoporous structure favorable for adsorption. Characterization using FTIR and XRF confirmed the presence of silanol and siloxane groups with low impurity levels. Adsorption performance was evaluated using industrial wastewater from silver processing, targeting copper (Cu²⁺) and silver (Ag⁺) removal. Results demonstrated high selectivity for Ag⁺, achieving 99.8 % removal, while Cu²⁺ showed limited uptake. SEM–EDX mapping confirmed the presence and distribution of metal ions on the silica surface. This study highlights the potential of OPF-derived silica as a low-cost, eco-friendly adsorbent, contributing to both waste valorization and heavy metal remediation within a cleaner production framework.
油棕纤维废弃物转化为介孔二氧化硅选择性去除工业废水中重金属的研究
对可持续废物管理和循环材料使用的需求日益增加,鼓励了将农业残留物转化为高价值功能材料的研究。本研究探讨了油棕纤维(OPF)废料在500°C和600°C的顺序酸碱处理和热煅烧中用于生产介孔二氧化硅的价值。优化后的二氧化硅在600℃下的比表面积为138.3 m²/g,孔径为16.4 nm,具有有利于吸附的介孔结构。用FTIR和XRF表征证实了硅醇和硅氧烷基团的存在,杂质含量低。以银加工工业废水为对象,以铜(Cu 2 +)和银(Ag +)的去除为目标,对吸附性能进行了评价。结果表明,Ag⁺具有很高的选择性,去除率达到99.8 %,而Cu 2⁺的吸收率有限。SEM-EDX成像证实了金属离子在二氧化硅表面的存在和分布。这项研究强调了opf衍生二氧化硅作为一种低成本、环保吸附剂的潜力,有助于在清洁生产框架内实现废物增值和重金属修复。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
2.60
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0.00%
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