反向化诱导氧气改性多孔聚硫化物,用于有效吸附重金属
Shiqi Lyu1, Zurina Zainal Abidin2, Thomas Choong Shean Yaw1
1Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400, Serdang, Malaysia.
Environmental science and pollution research international
|February 7, 2024
概括
这项研究引入了硫和棕油 (PSP) 中的多孔聚硫化物,以有效去除重金属. 优化的PSP显示了增强的孔隙性和功能性,显著改善了从水中的,铜和的修复.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学 化学 化学
背景情况:
- 来自植物油和硫的多硫化物在去除重金属方面存在局限性,原因是孔隙性和疏水性较低.
- 现有的聚硫化物缺乏足够的表面功能,无法有效地从水溶液中吸附重金属.
研究的目的:
- 从硫和棕油 (PSPs) 中合成多孔聚硫化物,具有增强的多孔性和表面含氧的功能组.
- 评估PSP作为吸附剂的效率,以从水溶液中去除Pb (II),Cu (II) 和Cr (III) 等重金属.
- 研究工艺条件和溶液参数对PSP吸附性能的影响.
主要方法:
- 使用不同的反应时间,温度和硫,棕油,NaCl和酸盐的比率来优化聚硫化物合成.
- 合成的多硫化物对孔隙性和表面功能群的表征.
- 批量吸附实验以确定不同条件下的重金属去除能力和动力学 (pH,离子强度).
主要成果:
- 合成的PSP呈现出明显增强的多孔性 (13.7-24.1 m2/g) 和含有表面氧的功能组 (6.9-8.6 wt.%).
- PSP表现出Pb (II) (218.5 mg/g),Cu (II) (74.8 mg/g) 和Cr (III) (68.4 mg/g) 的快速动力 (4.0小时) 和高吸附能力.
- 吸附性能取决于pH值和离子强度,显示出出色的抗干扰能力和内热,自发过程.
结论:
- 表面修饰的优化多孔聚硫化物 (PSP) 是重金属修复的高效吸附剂.
- 增强PSP的多孔性和功能克服了以前的聚硫化物材料的局限性.
- 这种方法为开发高效和坚固的材料提供了一条道路,用于处理受重金属污染的水.
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