通过硫酸修饰的生物炭去除离子
Jie Yu1, Jo-Shu Chang2, Hongliang Guo1
1College of Forestry, Northeast Forestry University, Harbin, 150040, China.
Environmental research
|July 9, 2023
概括
硫酸修饰显著增强了玉米生物炭中的 (Na+) 吸附,达到高达221.1 mg/g的容量. 这种酸修饰的生物炭显示出了修复污染水的巨大潜力.
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:
- 生物炭是一种潜在的吸附剂,可用于水资源整治.
- 来自玉米,茎和的原始生物炭具有较低的 (Na+) 吸附能力.
- 需要有效的方法来增强生物炭的Na +吸附,以实现实际应用.
研究的目的:
- 调查硫酸修饰对来自玉米,茎和的生物炭Na+吸附能力的影响.
- 探索修改生物炭在污染水中去除的潜力.
主要方法:
- 生物炭是从玉米,茎和中提取的,随后使用硫酸进行了修改.
- 进行了BrunauerEmmettTeller (BET) 表面积分析.
- 使用批量实验测量了Na+吸附能力.
- 福利埃变换红外光谱 (FT-IR) 和X射线光电子光谱 (XPS) 用于分析表面功能群.
主要成果:
- 硫酸修饰使玉米生物炭的BET表面积增加到101.6 m2/g.
- 经过酸修饰的玉米生物炭表现出 221.1 mg/g 的优越 Na+ 吸附能力,明显高于原始生物炭和文献值.
- 修改后的生物炭还在从实际受污染的水中去除Na+方面表现良好 (193.1 mg/g).
- FT-IR和XPS分析证实了-SO3H组的存在,与通过离子交换增强的Na+吸附有关.
结论:
- 硫酸修饰,特别是硫酸组 (-SO3H) 的移植,有效地提高了生物炭的Na+吸附能力.
- 玉米衍生的生物炭,当用硫酸改性时,表现出异常的潜力,用于修复被污染的水.
- 这项研究提出了一种新且有前途的方法,用于开发用于净化水的先进吸附剂.
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