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通过使用支持酸盐的零价值铁的酸盐激活来有效降解环素:过程优化,机制,降解途径和水矩阵

Eslam Salama¹, Kenneth Mensah², Marwa ElKady^3,4

¹Environment and Natural Materials Research Institute (ENMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, 21934, Egypt.

Environmental science and pollution research international

|July 7, 2023

概括

支持的零价值铁 (ZVI-Si) 通过使用硫酸盐 (PS) 有效降解四环素. 这种ZVI-Si/PS系统显示出高效率,稳定性和可重复使用性,为工业废水处理提供了潜力.

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:

环素污染对水生生态系统和人类健康构成风险.
开发有效和稳定的污染物降解催化剂对于环境修复至关重要.
零价值铁 (ZVI) 是有前途的,但需要修改以提高性能.

研究的目的:

为了合成和表征支持 (ZVI-Si) 的ZVI,以增强酸盐 (PS) 激活.
使用ZVI-Si/PS系统调查四环素的降解.
为了优化反应条件并阐明降解机制.

主要方法:

在上支持的ZVI (ZVI-Si) 通过微观和光谱技术进行了合成和表征.
在各种条件下,使用ZVI-Si/PS系统评估了环素降解.
响应表面方法用于优化PS度,初始四环素度和ZVI-Si剂量.
用液态染色学质谱法 (LC-MS) 分析了降解产品.

主要成果:

采用ZVI-Si/PS系统实现了67.55%的四环素去除,这是由于ZVI-Si.的水友性和稳定性得到了改善.
光催化 (光) 增强了9.45%的降解.
最佳降解发生在pH 3-7,最佳参数包括0.22 mM PS,10 mg/L四环素和0.46 g/LZVI-Si.
硫酸盐基因被确定为主要的活性物种,并提出了降解途径.
催化剂在五个周期内表现出良好的稳定性和可重复使用性.
在蒸和自来水中降解是有效的,但受到湖泊,排水和海水等复杂矩阵的阻碍.

结论:

ZVI-Si是硫酸盐激活的有效催化剂,导致有效的四环素降解.
该ZVI-Si/PS系统表现出高性能,稳定性和可重复使用性,使其适合实际应用.
需要进一步的研究来评估复杂的环境矩阵和工业废水中的性能.

关键词:

抗生素抗生素是一种抗生素.降解机制的降解机制降解途径的降解途径硫酸盐基的存在硫酸盐基的存在没有价值的铁.

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