4.7 Article

Removal of ibuprofen and its transformation products: Experimental and simulation studies

期刊

SCIENCE OF THE TOTAL ENVIRONMENT
卷 433, 期 -, 页码 296-301

出版社

ELSEVIER
DOI: 10.1016/j.scitotenv.2012.06.060

关键词

Ibuprofen; Kinetics; Biodegradation; Transformation products

资金

  1. Spanish Ministry of Science and Innovation
  2. European Union [CTM2009-14742-C02-01, IPT-2011102, CTQ2010-21776-C02-02]
  3. Catalan Agency for Administration of University (AGAUR) [2009 CTP 00034]

向作者/读者索取更多资源

Pharmaceutically active compounds (PhACs) deserve attention because of their effect on ecosystems and human health, as well as their continuous introduction into the aquatic environment. Classification schemes are suggested to characterise their biological degradation, e.g., based on pseudo-first-order kinetics, but these schemes can vary significantly, presumably due to pharmaceutical loads, sludge characteristics and experimental conditions. Degradation data for PhAC transformation products (TPs) are largely lacking. The present work focuses not only on the biodegradation of the pharmaceutical compound ibuprofen but also on its best-known TPs (i.e., carboxyl ibuprofen and both hydroxyl ibuprofen isomers). Ibuprofen is one of the most commonly consumed PhACs and can be found in different environmental compartments. The experiment performed consisted of a set of aerated batch tests with different suspended solid and ibuprofen concentrations to determine the influence of these parameters on the calculated biodegradation constant (K-biol). Sampling of the liquid phase at different scheduled times was assessed, removal efficiencies were calculated and pseudo-first-order kinetics were adjusted to obtain experimental K-biol values for the parent compound and its TPs. The experimental data were successfully fitted to ASM-based models, with K-biol values for the target compounds ranging from almost 1 to 17 L gSST(-1) d(-1), depending on the concentrations of the biomass and ibuprofen. This work provides innovative knowledge not only regarding the removal of TPs but also the formation kinetics of these TPs. (C) 2012 Elsevier B.V. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据