生物炭在超氧化物主导的染料降解中的作用 在催化剂激活的氧化硫酸盐工艺中
E Nandana1, Anand Harsh Dwivedi2, P V Nidheesh2
1CSIR-National Environmental Engineering Research Institute, Nagpur, 440020, India; Sacred Heart College, Thevara, Kochi, 682013, India.
Chemosphere
|April 10, 2024
概括
含铁的竹子生物炭有效地激活过氧硫酸盐 (PMS),以去除刚果红色染料. 这种绿色合成催化剂在净化水方面表现出高效率和稳定性.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 生物炭 (BC) 越来越被认为是降解持久性环境污染物的可持续催化剂.
- 污染废水的染料,如刚果红 (CR) 构成显著的生态和健康风险.
研究的目的:
- 为了研究含铁的竹子生物炭激活过氧化硫酸盐 (PMS) 对于清除刚果红色染料的有效性.
- 探索开发的基于生物炭的催化剂的合成,表征和催化性能.
主要方法:
- 通过绿色方法合成了一种新的催化剂,使用尼姆提取物,含有含铁的竹子生物炭.
- 催化剂使用SEM,FTIR和XRD进行了表征.
- 进行了批量实验,以优化CR染料降解的pH,催化剂剂量和PMS度等参数.
主要成果:
- 在优化条件下 (300 mg L-1 PMS, 200 mg L-1 催化剂, pH 6) 在60分钟内实现了89.7%的CR染料去除 (初始10 ppm).
- 扫描研究表明,超氧化激素 (O2•-),基激素 (OH) 和单片氧 (O2) 是关键的反应物种,其中O2•-占主导地位.
- 生物炭成分,而不是装载的铁,主要负责PMS激活.
- 催化剂表现出极好的可重复使用性,在四个周期内保持高活性.
结论:
- 含铁的竹子生物炭是消除刚果红色染料的PMS激活的高效和稳定的催化剂.
- 绿色合成方法为开发先进的氧化催化剂提供了一个可持续的途径.
- 催化剂的性能凸显了其在处理染料污染废水中的实际应用潜力.
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