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使用Co (II) /NaHCO3/H2O2氧化系统处理织废水
Francisco J Ariza-Pineda1, Iván F Macías-Quiroga2, Diego F Hinojosa-Zambrano1
1Departamento de Ingeniería Química, Universidad Nacional de Colombia Sede Manizales, Campus La Nubia, km 7 vía al Aeropuerto, Manizales, Colombia.
Heliyon
|December 18, 2023
概括
碳酸盐活性过氧化物 (BAP) 系统有效降解织废水染料. 催化BAP处理脱色了酸黑194,降低了毒性,并提高了生物降解性.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 先进的氧化过程 先进的氧化过程
背景情况:
- 织废水 (TWW) 由于耐火有机污染物 (如染料) 构成重大环境风险.
- 传统的处理方法与这些持久化合物的降解作斗争.
- 先进的氧化工艺 (AOP) 提供了有前途的解决方案,以消除反抗性污染物.
研究的目的:
- 为了优化TWW中的酸黑194的降解,使用催化二碳酸激活过氧化物 (BAP) 系统.
- 研究关键变量对染料降解效率的影响.
- 评估CO2+-BAP系统在脱色,矿化,COD去除和毒性降低方面的整体有效性.
主要方法:
- 为了优化,采用了响应表面方法 (RSM) 与中央复合设计 (CCD).
- 差异分析 (ANOVA) 用于识别显著因素和相互作用.
- 碳酸盐激活过氧化物 (BAP) 系统被离子 (Co2+) 催化.
主要成果:
- 确定了H2O2和NaHCO3度的最佳条件,以在25°C和45μM Co2+下有效降解染料.
- 实现了完全脱色 (≥99.40%).
- 观察到显著的矿化 (32.20%) 和化学氧气需求 (COD) 移除 (52.02%).
- 用鱼进行的急性毒性测试显示,治疗后死亡率完全降低.
结论:
- 二氧化碳+BAP氧化系统是处理织废水的高效方法.
- 该过程实现了完整的染料脱色,部分矿化和增强的生物降解性.
- 处理方法显著降低了织废水的毒性,使其成为一个可行的环保选择.
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