Evaluation of the presence of drugs in sewage treatment station sludge before and after the bioremediation process by composting

IF 0.5 4区 医学 Q4 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH Saude E Sociedade Pub Date : 2023-01-01 DOI:10.1590/s0104-12902023220535en
Suzete Maria Lenzi Caminada, M. M. Bocchiglieri, E. D. Velini, W. Paganini
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Abstract

Abstract The presence of residual drugs in the environment is a growing global issue, with many studies seeking to quantify it. However, its behavior and effects, both on the environment and on humans are still mostly unknown. In this study, seven drugs were evaluated: Atenolol, Carbamazepine, Clonazepam, Ibuprofen, Paracetamol, Simvastatin, and Fluoxetine, from samples of sludge from a sewage treatment plant of the public system. The extraction of the compounds from the matrix was based on the leaching of the compounds in water and the analytical quantification was determined by an ultra-performance liquid chromatograph system, coupled to the mass spectrometer. The data indicate the possible movement of some drugs from aqueous to solid phase. We observed that the composting of the sludge could favor the biodegradation or mobilization of the compounds since there was a significant reduction in the concentrations, when comparing the values obtained before and after the composting process. The non-detection of a compound does not necessarily mean that it has been fully degraded by microorganisms; however, past studies reached similar results, which corroborates the adequacy of the methodological proposal and the adopted procedures, contributing to the production of reliable results.
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堆肥生物修复前后污水处理站污泥中药物含量的评价
环境中残留药物的存在是一个日益严重的全球性问题,许多研究试图对其进行量化。然而,它的行为和对环境和人类的影响仍然是未知的。在这项研究中,评估了7种药物:阿替洛尔、卡马西平、氯硝西泮、布洛芬、扑热息痛、辛伐他汀和氟西汀,这些药物来自公共系统污水处理厂的污泥样本。从基质中提取化合物是基于化合物在水中的浸出,并通过超高效液相色谱仪系统耦合质谱仪进行分析定量。这些数据表明一些药物可能从水相转移到固相。我们观察到,当比较堆肥过程前后获得的值时,污泥的堆肥有利于化合物的生物降解或动员,因为浓度显著降低。未检测到化合物并不一定意味着它已被微生物完全降解;但是,过去的研究得出了类似的结果,这证实了方法建议和通过的程序的适当性,有助于得出可靠的结果。
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来源期刊
Saude E Sociedade
Saude E Sociedade PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH-
CiteScore
0.90
自引率
16.70%
发文量
45
审稿时长
12 weeks
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