Barreto-Rodrigues Marcio, Silva Flávio T, Paiva Teresa C B
Federal Technological University Of Paraná - UTFPR, Pato Branco-PR, Brazil.
J Hazard Mater. 2009 Jun 15;165(1-3):1224-8. doi: 10.1016/j.jhazmat.2008.09.120. Epub 2008 Oct 9.
The environmental impact caused by the production of explosives made from nitroaromatic compounds such as 2,4,6-trinitrotoluene (TNT) is currently a major concern, mainly due to their toxic nature, a fact that makes these compounds highly harmful. This work evaluated a continual system treatment reactor (CSTR) consisting of column zero-valent iron and a system to promote a fenton reaction in order to create possible definitive routines for treating effluents originating from the TNT production process. The spectrophotometric results demonstrated that this combination of processes was highly efficient in promoting the removal of all the absorbed species at 290 nm and the visible region of the specter. The results also revealed that the combination of treatments was significantly efficient in terms of correcting the effluent's main parameters of relevance, mainly COD (95.5% reduction) and TNT concentration, whose total was converted into nitrous and phenolic compounds and, additionally, the acute toxicity was also significantly reduced (95%). These results indicate that the strategy can serve as an efficient option for effluent treatment, for release into the receiving body, or eventually for use as industrial reuse water.
由硝基芳香化合物（如2,4,6-三硝基甲苯（TNT））制成的炸药生产所造成的环境影响目前是一个主要问题，主要是由于它们的毒性，这一事实使得这些化合物具有高度危害性。这项工作评估了一个由零价铁柱和促进芬顿反应的系统组成的连续系统处理反应器（CSTR），以便为处理TNT生产过程产生的废水创建可能的最终处理流程。分光光度法结果表明，这种工艺组合在促进290nm处和光谱可见区域所有吸收物种的去除方面非常有效。结果还显示，就校正废水的主要相关参数而言，处理组合显著有效，主要是化学需氧量（COD）降低了95.5%以及TNT浓度，其总量转化为亚硝酸盐和酚类化合物，此外，急性毒性也显著降低（95%）。这些结果表明，该策略可作为废水处理的有效选择，用于排放到接收水体中，或最终用作工业回用水。
