UV/H2O2 degradation of endocrine-disrupting chemicals in water evaluated via toxicity assays

2007 ◽  
Vol 55 (12) ◽  
pp. 313-319 ◽  
Author(s):  
Karl G. Linden ◽  
Erik J. Rosenfeldt ◽  
Seth W. Kullman
Keyword(s):  
Natural Waters ◽  
Endocrine Disrupting Chemicals ◽  
The United States ◽  
Biologically Active ◽  
Destruction Efficiency ◽  
Low Concentrations ◽  
Endocrine Disrupting ◽  
Water And Wastewater ◽  
Uv Dose ◽  
Water Values

Due to rising concern regarding the presence of endocrine-disrupting chemicals (EDCs) in surface water and groundwater throughout the United States, Asia and Europe, treatment of these chemicals in drinking water and wastewater to protect human health and the environment is an area of great interest. Many conventional treatment schemes are relatively ineffective in removing EDCs from water and wastewater. This is concerning because these chemicals are biologically active at very low concentrations and effects of mixtures are relatively unknown. 17-α-oestradiol (E2) and 17-β-ethinyl-oestradiol (EE2), suspected EDCs, were degraded significantly by the UV/H2O2 AOP. The UV/H2O2 processes using either low or medium pressure lamps were degraded EDCs by between 80 and 99.3% at a 15 ppm H2O2 concentration and a UV dose of 1,000 mJ/cm2. Significantly greater removal was noted when the removal was based on total oestrogenic activity using a yeast oestrogen screen (YES) assay. These data indicated that a dose of less than 200 mJ/cm2 completely removed oestrogenic activity in lab water. Values for natural waters were slightly higher. A steady state model was developed to determine EDC destruction efficiency in waters of differing quality. The model effectively predicted destruction in water, where concentrations of all scavenging species were known. Based on these results it was concluded than complete destruction of oestrogenic activity was possible under practical advanced oxidation conditions for a variety of water qualities.

scholarly journals Elucidating the Links Between Endocrine Disruptors and Neurodevelopment

Endocrinology ◽  
2015 ◽  
Vol 156 (6) ◽  
pp. 1941-1951 ◽  
Author(s):  
Thaddeus T. Schug ◽  
Ashley M. Blawas ◽  
Kimberly Gray ◽  
Jerrold J. Heindel ◽  
Cindy P. Lawler
Keyword(s):  
Endocrine Disrupting Chemicals ◽  
Endocrine System ◽  
The United States ◽  
Autism Spectrum ◽  
Learning Disorders ◽  
Environmental Chemicals ◽  
Neurodevelopmental Outcomes ◽  
Nutritional Factors ◽  
Hyperactivity Disorder ◽  
Endocrine Disrupting

Abstract Recent data indicate that approximately 12% of children in the United States are affected by neurodevelopmental disorders, including attention deficit hyperactivity disorder, learning disorders, intellectual disabilities, and autism spectrum disorders. Accumulating evidence indicates a multifactorial etiology for these disorders, with social, physical, genetic susceptibility, nutritional factors, and chemical toxicants acting together to influence risk. Exposure to endocrine-disrupting chemicals during the early stages of life can disrupt normal patterns of development and thus alter brain function and disease susceptibility later in life. This article highlights research efforts and pinpoints approaches that could shed light on the possible associations between environmental chemicals that act on the endocrine system and compromised neurodevelopmental outcomes.

Analytical methodologies for determining the occurrence of endocrine disrupting chemicals in sewage treatment plants and natural waters

2004 ◽  
Vol 501 (1) ◽  
pp. 79-88 ◽  
Author(s):  
Aldo Laganà ◽  
Alessandro Bacaloni ◽  
Ilaria De Leva ◽  
Angelo Faberi ◽  
Giovanna Fago ◽  
...  
Keyword(s):  
Natural Waters ◽  
Endocrine Disrupting Chemicals ◽  
Sewage Treatment ◽  
Sewage Treatment Plants ◽  
Endocrine Disrupting

Treatment strategies for enhancing the removal of endocrine-disrupting chemicals in water and wastewater systems

2021 ◽  
Vol 41 ◽  
pp. 102017
Author(s):  
Mohd Faiz Muaz Ahmad Zamri ◽  
Raihana Bahru ◽  
Fatihah Suja' ◽  
Abd Halim Shamsuddin ◽  
Sagor Kumar Pramanik ◽  
...  
Keyword(s):  
Endocrine Disrupting Chemicals ◽  
Treatment Strategies ◽  
Endocrine Disrupting ◽  
Wastewater Systems ◽  
Water And Wastewater

A survey of endocrine disrupting chemicals in sewage and a preliminary treatment trial

2005 ◽  
Vol 52 (8) ◽  
pp. 1-7 ◽  
Author(s):  
J.Q. Jiang ◽  
Q. Yin ◽  
P. Pearce ◽  
J. Zhou
Keyword(s):  
Endocrine Disrupting Chemicals ◽  
Sewage Treatment ◽  
Preliminary Treatment ◽  
Biological Processes ◽  
Oxidation Processes ◽  
Treatment Processes ◽  
Low Concentrations ◽  
Endocrine Disrupting ◽  
17Β Estradiol ◽  
Low Levels

This paper demonstrates that synthetic endocrine disrupting chemicals (EDCs) (e.g. bisphenol-A) and natural EDCs (e.g. estrone and 17β-estradiol) were found in the crude sewage from two sewage treatment works. Conventional biological processes can lower EDC concentrations to several hundred nanograms per litre. Because natural EDCs (e.g. estrone and 17β1-estradiol) have biological activity and an adverse impact on the environment at extremely low concentrations (several tens of nanograms per litre), and because the existing wastewater/sewage treatment processes are not adequate to reduce natural EDC concentrations lower than 100ngL−1, further treatment after conventional biological processes is required. Preliminary trials with ferrate(VI) and electrochemical oxidation processes demonstrated that the former is more effective than the latter in reducing EDC concentrations, and that both the processes can effectively reduce EDCs to very low levels, ranging between 20 and 100ngL−1.

scholarly journals Overview of the Mechanisms of Action of Selected Bisphenols and Perfluoroalkyl Chemicals on the Male Reproductive Axes

2021 ◽  
Vol 12 ◽  
Author(s):  
Michal Ješeta ◽  
Jana Navrátilová ◽  
Kateřina Franzová ◽  
Sandra Fialková ◽  
Bartozs Kempisty ◽  
...  
Keyword(s):  
Endocrine Disruptors ◽  
Male Fertility ◽  
Endocrine Disrupting Chemicals ◽  
Subsequent Development ◽  
The United States ◽  
Mechanisms Of Action ◽  
Male Reproduction ◽  
Human Reproduction ◽  
Testicular Development ◽  
Endocrine Disrupting

Male fertility has been deteriorating worldwide for considerable time, with the greatest deterioration recorded mainly in the United States, Europe countries, and Australia. That is, especially in countries where an abundance of chemicals called endocrine disruptors has repeatedly been reported, both in the environment and in human matrices. Human exposure to persistent and non-persistent chemicals is ubiquitous and associated with endocrine-disrupting effects. This group of endocrine disrupting chemicals (EDC) can act as agonists or antagonists of hormone receptors and can thus significantly affect a number of physiological processes. It can even negatively affect human reproduction with an impact on the development of gonads and gametogenesis, fertilization, and the subsequent development of embryos. The negative effects of endocrine disruptors on sperm gametogenesis and male fertility in general have been investigated and repeatedly demonstrated in experimental and epidemiological studies. Male reproduction is affected by endocrine disruptors via their effect on testicular development, impact on estrogen and androgen receptors, potential epigenetic effect, production of reactive oxygen species or direct effect on spermatozoa and other cells of testicular tissue. Emerging scientific evidence suggests that the increasing incidence of male infertility is associated with the exposure to persistent and non-persistent endocrine-disrupting chemicals such as bisphenols and perfluoroalkyl chemicals (PFAS). These chemicals may impact men’s fertility through various mechanisms. This study provides an overview of the mechanisms of action common to persistent (PFAS) and nonpersistent (bisphenols) EDC on male fertility.

Treatment of aqueous bisphenol A using nano-sized zero-valent iron in the presence of hydrogen peroxide and persulfate oxidants

2015 ◽  
Vol 71 (12) ◽  
pp. 1859-1868 ◽  
Author(s):  
B. Girit ◽  
D. Dursun ◽  
T. Olmez-Hanci ◽  
I. Arslan-Alaton
Keyword(s):  
Hydrogen Peroxide ◽  
Bisphenol A ◽  
Natural Waters ◽  
Elevated Temperatures ◽  
Vibrio Fischeri ◽  
Endocrine Disrupting Chemicals ◽  
Zero Valent Iron ◽  
Pseudokirchneriella Subcapitata ◽  
Endocrine Disrupting ◽  
Influence Of Ph

Bisphenol A (BPA) is an industrial pollutant considered as one of the major endocrine-disrupting chemicals found in natural waters. In the present study, the use of a commercial, air-stable, zero-valent iron (ZVI) powder, consisting of Fe0 surface stabilized nanoparticles was examined for the treatment of 20 mg/L, aqueous BPA solutions. The influence of pH (3, 5, 7), addition of hydrogen peroxide (HP) and persulfate (PS) oxidants (0.0, 1.25 and 2.5 mM) as well as temperature (25 and 50 °C) was studied for BPA treatment with 1 g/L ZVI. ZVI coupled with HP or PS provided an effective treatment system, which was based on rapid ZVI-mediated decomposition of the above-mentioned oxidants, resulting in complete BPA as well as significant total organic carbon (TOC) (88%) removals, in particular when PS was employed as the oxidant. Increasing the PS concentration and reaction temperature dramatically enhanced PS decomposition and BPA removal rates, whereas HP was not very effective in TOC removals and at elevated temperatures. According to the bioassays conducted with Vibrio fischeri and Pseudokirchneriella subcapitata, the acute toxicity of aqueous BPA fluctuated at first but decreased appreciably at the end of ZVI/PS treatment.

Sign in / Sign up

Export Citation Format

Share Document