alexa Fate of estrogens in a municipal sewage treatment plant.
Environmental Sciences

Environmental Sciences

Journal of Bioremediation & Biodegradation

Author(s): Andersen H, Siegrist H, HallingSrensen B, Ternes TA

Abstract Share this page

Abstract The fate of the highly potent endocrine disrupters estrone (E1), 17beta-estradiol (E2), and 17alpha-ethinylestradiol (EE2) was investigated in mechanical and biological sewage treatment as well as in sewage-sludge treatment at a municipal German sewage treatment plant (STP). The main outcome of the study was that a common municipal STP with an activated sludge system for nitrification and denitrification including sludge recirculation can appreciably eliminate natural and synthetic estrogens. As a consequence, the endocrine effects of biota in the receiving waters should be significantly reduced. All estrogen concentrations decreased gradually along the treatment train. In the STP effluent, the steroid estrogen concentrations were always below the quantification limit of 1 ng/L. The elimination efficiency of the natural estrogens (E1 and E2) exceeded 98\%, and EE2 was reduced by more than 90\%. The natural estrogens were largely degraded biologically in the denitrifying and aerated nitrifying tanks of the activated sludge system, whereas EE2 was only degraded in the nitrifying tank. Only about 5\% of the estrogens are sorbed onto digested sewage sludge. It is very likely that conjugates (glucuronides and sulfates) of the estrogens were cleaved into the parent compounds mainly in the first denitrification tank.
This article was published in Environ Sci Technol and referenced in Journal of Bioremediation & Biodegradation

Relevant Expert PPTs

Relevant Speaker PPTs

  • Dassanayake TDMSB
    Comparison of BMI, body fat percentage and lean body weight of national level teenage swimmers and non-swimmers in Sri Lanka
    PPT Version | PDF Version
  • Rasha Mosa
    Effects of growth hormone secretagogue receptor agonist and antagonist in non-obese Type 2 Diabetes MKR mice
    PPT Version | PDF Version
  • Trent Jackman
    Exploratory comparison of credentialed clinical instructors’ and non-credentialed clinical instructors’ report of frequency and importance of professional behaviors in clinical education
    PPT Version | PDF Version
  • Saraswathi K
    Diagnosis of different stages of non-proliferative diabetic retinopathy
    PPT Version | PDF Version
  • Guldeniz Karadeniz Cakmak
    The importance of intraoperative ultrasound guidance to achieve negative margins for palpable and nonpalpable breast cancer
    PPT Version | PDF Version
  • Elena Bonanno
    Microcalcification as an active phenomenon mediated by epithelial cells with mesenchymal characteristics
    PPT Version | PDF Version
  • Antoine N. Gergess
    Antoine N. Gergess-University-of-Balamand-Lebanon-Cold-Bending-Steel-Beams-a-State-of-The-Art-Engineering-Solution-that-Meets-Industry-Challenges
    PPT Version | PDF Version
  • Gabriela Briceno
    Selection of an actinobacteria consortium for enhancing diazinon degradation
    PPT Version | PDF Version
  • Osama O. Ibrahim
    Chemicals structure, properties, regulations and applications of non-nutritive-high intensity sweeteners
    PDF Version
  • Wendy peters
    A non-replicating Ad5 vaccine for treatment of HSV-2
    PPT Version | PDF Version
  • Yosef Yarden
    Classically, the 3’untranslated region (3’UTR) is that region in eukaryotic protein-coding genes from the translation termination codon to the polyA signal. It is transcribed as an integral part of the mRNA encoded by the gene. However, there exists another kind of RNA, which consists of the 3’UTR alone, without all other elements in mRNA such as 5’UTR and coding region. The importance of independent 3’UTR RNA (referred as I3’UTR) was prompted by results of artificially introducing such RNA species into malignant mammalian cells. Since 1991, we found that the middle part of the 3’UTR of the human nuclear factor for interleukin-6 (NF-IL6) or C/EBP gene exerted tumor suppression effect in vivo. Our subsequent studies showed that transfection of C/EBP 3’UTR led to down-regulation of several genes favorable for malignancy and to up-regulation of some genes favorable for phenotypic reversion. Also, it was shown that the sequences near the termini of the C/EBP 3’UTR were important for its tumor suppression activity. Then, the C/EBP 3’UTR was found to directly inhibit the phosphorylation activity of protein kinase CPKC in SMMC-7721, a hepatocarcinoma cell line. Recently, an AU-rich region in the C/EBP 3’UTR was found also to be responsible for its tumor suppression. Recently we have also found evidence that the independent C/EBP 3’UTR RNA is actually exists in human tissues, such as fetal liver and heart, pregnant uterus, senescent fibroblasts etc. Through 1990’s to 2000’s, world scientists found several 3’UTR RNAs that functioned as artificial independent RNAs in cancer cells and resulted in tumor suppression. Interestingly, majority of genes for these RNAs have promoter-like structures in their 3’UTR regions, although the existence of their transcribed products as independent 3’UTR RNAs is still to be confirmed. Our studies indicate that the independent 3’UTR RNA is a novel non-coding RNA species whose function should be the regulation not of the expression of their original mRNA, but of some essential life activities of the cell as a whole.
    PPT Version | PDF Version
  • Ding-Gan Liu
    Independent 3’untranslated region RNA: A novel non-coding regulator RNA
    PPT Version | PDF Version
  • Sergey Alekseenko
    Sergey-Alekseenko-Institute-of-Thermophysics-Russia-Nonlinear-waves-and-transfer-processes-in-liquid-film-flow
    PPT Version | PDF Version
  • Ewa Maj
    Antiangiogenic treatment in non-small cell lung cancer (NSCLC)
    PPT Version | PDF Version
  • Zakaria Hmama
    A non-genetic approach to improve the tuberculosis vaccine BCG
    PPT Version | PDF Version

Recommended Conferences

  • 6th World Congress on Biofuels and Bioenergy
    Sep 5-6, 2017 London, UK
  • 6th World Congress on Biopolymers
    September 7-9, 2017 Paris, France
  • 7th International Conference and Exhibition on Biopolymers and Bioplastics
    October 19-21, 2017 San Francisco, USA
Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords