scholarly journals Recent Advances in the Rejection of Endocrine-Disrupting Compounds from Water Using Membrane and Membrane Bioreactor Technologies: A Review

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 392 ◽  
Author(s):  
Kamil Kayode Katibi ◽  
Khairul Faezah Yunos ◽  
Hasfalina Che Man ◽  
Ahmad Zaharin Aris ◽  
Mohd Zuhair bin Mohd Nor ◽  
...  
Keyword(s):  
Membrane Bioreactor ◽  
Endocrine Disrupting Chemicals ◽  
Endocrine Disrupting Compounds ◽  
Mitigation Strategies ◽  
Treatment Methods ◽  
Treatment Techniques ◽  
Treatment Processes ◽  
Recent Advances ◽  
Comprehensive Information ◽  
Endocrine Disrupting

Water is a critical resource necessary for life to be sustained, and its availability should be secured, appropriated, and easily obtainable. The continual detection of endocrine-disrupting chemicals (EDCs) (ng/L or µg/L) in water and wastewater has attracted critical concerns among the regulatory authorities and general public, due to its associated public health, ecological risks, and a threat to global water quality. Presently, there is a lack of stringent discharge standards regulating the emerging multiclass contaminants to obviate its possible undesirable impacts. The conventional treatment processes have reportedly ineffectual in eliminating the persistent EDCs pollutants, necessitating the researchers to develop alternative treatment methods. Occurrences of the EDCs and the attributed effects on humans and the environment are adequately reviewed. It indicated that comprehensive information on the recent advances in the rejection of EDCs via a novel membrane and membrane bioreactor (MBR) treatment techniques are still lacking. This paper critically studies and reports on recent advances in the membrane and MBR treatment methods for removing EDCs, fouling challenges, and its mitigation strategies. The removal mechanisms and the operating factors influencing the EDCs remediation were also examined. Membranes and MBR approaches have proven successful and viable to eliminate various EDCs contaminants.

scholarly journals Contemporary Techniques for Remediating Endocrine-Disrupting Compounds in Various Water Sources: Advances in Treatment Methods and Their Limitations

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3229
Author(s):  
Kamil Kayode Katibi ◽  
Khairul Faezah Yunos ◽  
Hasfalina Che Man ◽  
Ahmad Zaharin Aris ◽  
Mohd Zuhair Mohd Nor ◽  
...  
Keyword(s):  
Membrane Separation ◽  
Endocrine Disrupting Compounds ◽  
Aquatic Life ◽  
Treatment Methods ◽  
Treatment Processes ◽  
Recent Advances ◽  
Endocrine Disrupting ◽  
Research Findings ◽  
Negative Impacts ◽  
Membrane Treatment

Over the years, the persistent occurrence of superfluous endocrine-disrupting compounds (EDCs) (sub µg L−1) in water has led to serious health disorders in human and aquatic lives, as well as undermined the water quality. At present, there are no generally accepted regulatory discharge limits for the EDCs to avert their possible negative impacts. Moreover, the conventional treatment processes have reportedly failed to remove the persistent EDC pollutants, and this has led researchers to develop alternative treatment methods. Comprehensive information on the recent advances in the existing novel treatment processes and their peculiar limitations is still lacking. In this regard, the various treatment methods for the removal of EDCs are critically studied and reported in this paper. Initially, the occurrences of the EDCs and their attributed effects on humans, aquatic life, and wildlife are systematically reviewed, as well as the applied treatments. The most noticeable advances in the treatment methods include adsorption, catalytic degradation, ozonation, membrane separation, and advanced oxidation processes (AOP), as well as hybrid processes. The recent advances in the treatment technologies available for the elimination of EDCs from various water resources alongside with their associated drawbacks are discussed critically. Besides, the application of hybrid adsorption–membrane treatment using several novel nano-precursors is carefully reviewed. The operating factors influencing the EDCs’ remediations via adsorption is also briefly examined. Interestingly, research findings have indicated that some of the contemporary techniques could achieve more than 99% EDCs removal.

scholarly journals Effects of the Hedgehog signalling inhibitor itraconazole on developing rat ovaries

2021 ◽  
Author(s):  
Hanna Katarina Lilith Johansson ◽  
Camilla Taxvig ◽  
Gustav Peder Mohr Olsen ◽  
Terje Svingen
Keyword(s):  
Endocrine Disrupting Chemicals ◽  
Endocrine Disrupting Compounds ◽  
Perinatal Period ◽  
Endocrine Function ◽  
Ovary Development ◽  
Knock Out ◽  
Female Reproductive Health ◽  
Endocrine Disrupting ◽  
Hh Signaling ◽  
Knock Out Mice

Abstract Early ovary development is considered to be largely hormone independent, yet there are associations between fetal exposure to endocrine disrupting chemicals and reproductive disorders in women. This can potentially be explained by perturbations to establishment of ovarian endocrine function rather than interference with an already established hormone system. In this study we explore if Hedgehog (HH) signaling, a central pathway for correct ovary development, can be disrupted by exposure to HH-disrupting chemicals, using the antifungal itraconazole as model compound. In the mouse Leydig cell line TM3, used as a proxy for ovarian theca cells, itraconazole exposure had a suppressing effect on genes downstream of HH signaling, such as Gli1. Exposing explanted rat ovaries (gestational day 22 or postnatal day 3) to 30 µM itraconazole for 72 h induced significant suppression of genes in the HH signaling pathway with altered Ihh, Gli1, Ptch1, and Smo expression similar to those previously observed in Ihh/Dhh knock-out mice. Exposing rat dams to 50 mg/kg bw/day in the perinatal period did not induce observable changes in the offspring’s ovaries. Overall, our results suggest that HH signal disruptors may affect ovary development with potential long-term consequences for female reproductive health. However, potent HH inhibitors would likely cause severe teratogenic effects at doses lower than those causing ovarian dysgenesis, so the concern with respect to reproductive disorder is for the presence of HH disruptors at low concentration in combination with other ovary or endocrine disrupting compounds.

scholarly journals Removal of endocrine disrupting chemicals and microbial indicators by a decentralised membrane bioreactor for water reuse

2012 ◽  
Vol 2 (2) ◽  
pp. 67-73 ◽  
Author(s):  
T. Trinh ◽  
B. van den Akker ◽  
H. M. Coleman ◽  
R. M. Stuetz ◽  
P. Le-Clech ◽  
...  
Keyword(s):  
Water Reuse ◽  
Membrane Bioreactor ◽  
Endocrine Disrupting Chemicals ◽  
Membrane Bioreactors ◽  
Log10 Reduction ◽  
High Quality ◽  
Comprehensive Overview ◽  
Microbial Indicators ◽  
Endocrine Disrupting ◽  
Small Footprint

Submerged membrane bioreactors (MBRs) have attracted a significant amount of interest for decentralised treatment systems due to their small footprint and ability to produce high quality effluent, which is favourable for water reuse applications. This study provides a comprehensive overview of the capacity of a full-scale decentralised MBR to eliminate 17 endocrine disrupting chemicals (EDCs) and five indigenous microbial indicators. The results show that the MBR consistently achieved high removal of EDCs (>86.5%). Only 2 of the 17 EDCs were detected in the MBR permeate, namely two-phenylphenol and 4-tert-octylphenol. Measured log10 reduction values of vegetative bacterial indicators were in the range of 5–5.3 log10 units, and for clostridia, they were marginally lower at 4.6 log10 units. Removal of bacteriophage was in excess of 4.9 log10 units. This research shows that MBRs are a promising technology for decentralised water reuse applications.

Removal of endocrine disrupting compounds using a membrane bioreactor and disinfection

2007 ◽  
Vol 6 (2) ◽  
pp. 131-137 ◽  
Author(s):  
A J Spring ◽  
D M Bagley ◽  
R C Andrews ◽  
S Lemanik ◽  
P Yang
Keyword(s):  
Membrane Bioreactor ◽  
Endocrine Disrupting Compounds ◽  
Endocrine Disrupting

Analysis and occurrence of typical endocrine-disrupting chemicals in three sewage treatment plants

2010 ◽  
Vol 62 (11) ◽  
pp. 2501-2509 ◽  
Author(s):  
L. Y. Wang ◽  
X. H. Zhang ◽  
N. F. Y. Tam
Keyword(s):  
Biological Treatment ◽  
Endocrine Disrupting Chemicals ◽  
Sewage Treatment ◽  
Average Concentration ◽  
Gas Chromatography Mass Spectrometry ◽  
Wet Season ◽  
Physical Treatment ◽  
Sewage Treatment Plants ◽  
Treatment Processes ◽  
Endocrine Disrupting

Seven typical endocrine-disrupting chemicals (EDCs), including bisphenol A (BPA), 4-tert-octylphenol (OP), estrone (E1), estradiol (E2), 17α-estradiol (17α-E2), estriol (E3) and 17α-ethinylestradiol (EE2) in wastewater, were simultaneously determined with gas chromatography–mass spectrometry (GC–MS). Samples, including influents, effluents and wastewater of different unit processes, were taken seasonally from three different sewage treatment plants. The result showed that BPA and EE2 were the two main types of EDCs in all the samples. The average concentration of BPA were in the range of 268.1–2,588.5 ng l−1 in influents and 34.0–3,099.6 ng l−1 in effluents, while EE2 ranging from 133.1 to 403.2 ng l−1 and from 35.3 to 269.1 ng l−1, respectively. Seasonal change of EDCs levels in effluents was obvious between wet season and dry season. Besides, BPA and E3 could be effectively removed by the biological treatment processes (oxidation ditch and A2/O) with the unit removal of 64–91% and 63–100% for each compound, while other five EDCs had moderate or low removal rates. The study also proved that physical treatment processes, including screening, primary sedimentation and pure aeration, had no or little effect on EDCs removal.

Fate and transport of endocrine-disrupting compounds (oestrone and 17β-oestradiol) in a membranebio-reactor used for water re-use

2006 ◽  
Vol 53 (9) ◽  
pp. 123-130 ◽  
Author(s):  
Seojin Chang ◽  
Namjung Jang ◽  
Younghyun Yeo ◽  
In S. Kim
Keyword(s):  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Fate And Transport ◽  
Endocrine Disrupting Compounds ◽  
Hollow Fibre ◽  
Incomplete Removal ◽  
Endocrine Disrupting ◽  
Micro Pollutants

Oestrogens have been detected in the effluents of sewage treatment plants (STPs) in several countries, as well as in surface water. This occurrence is fundamentally attributed to the excretion of oestrogen from humans and mammalian bodies, and the incomplete removal of these compounds from wastewater treatment plants. These micro-pollutants are causing great concern when it comes to water re-use. There is a lack information on endocrine-disrupting compounds (EDCs) such as oestrogen in water re-use systems, e.g. a membrane bioreactor (MBR). It is clear that there is a strong need for “EDCs in MBR for water re-use”. This study examined an E1 and E2 biodegradation batch test by an activated sludge and hollow fibre membrane filtration test with and without a bio-cake. E2 was effectively removed, even in high initial concentrations (1,000 ppb). E2 was oxidised into E1, and E1 had a lower adsorption rate than E2. The membrane with the bio-cake provided better removal than the virgin membrane.

scholarly journals Environment-Friendly Removal Methods for Endocrine Disrupting Chemicals

2020 ◽  
Vol 12 (18) ◽  
pp. 7615
Author(s):  
Xiufang Gao ◽  
Shuang Kang ◽  
Rongwei Xiong ◽  
Ming Chen
Keyword(s):  
Water Treatment ◽  
Endocrine Disrupting Chemicals ◽  
Chemical Properties ◽  
Catalytic Efficiency ◽  
High Catalytic Activity ◽  
Treatment Methods ◽  
Endocrine Disrupting ◽  
Removal Technology ◽  
Definition Of ◽  
Estrogen Effect

In the past few decades, many emerging pollutants have been detected and monitored in different water sources because of their universal consumption and improper disposal. Among these, endocrine-disrupting chemicals (EDCs), a group of organic chemicals, have received global attention due to their estrogen effect, toxicity, persistence and bioaccumulation. For the removal of EDCs, conventional wastewater treatment methods include flocculation, precipitation, adsorption, etc. However, there are some limitations on these common methods. Herein, in order to enhance the public’s understanding of environmental EDCs, the definition of EDCs and the characteristics of several typical EDCs (physical and chemical properties, sources, usage, concentrations in the environment) are reviewed and summarized in this paper. In particular, the methods of EDC removal are reviewed, including the traditional methods of EDC removal, photocatalysis, biodegradation of EDCs and the latest research results of EDC removal. It is proposed that photocatalysis and biodegradation could be used as an environmentally friendly and efficient EDC removal technology. Photocatalytic technology could be one of the water treatment methods with the most potential, with great development prospects due to its high catalytic efficiency and low energy consumption. Biodegradation is expected to replace traditional water treatment methods and is also considered to be a highly promising method for efficient removal of EDCs. Besides, we summarize several photocatalysts with high catalytic activity and some fungi, bacteria and algae with strong biodegradability.

Comparison of the removal efficiency of endocrine disrupting compounds in pilot scale sewage treatment processes

Chemosphere ◽  
2008 ◽  
Vol 71 (8) ◽  
pp. 1582-1592 ◽  
Author(s):  
Jiho Lee ◽  
Byoung C. Lee ◽  
Jin S. Ra ◽  
Jaeweon Cho ◽  
In S. Kim ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Sewage Treatment ◽  
Endocrine Disrupting Compounds ◽  
Pilot Scale ◽  
Treatment Processes ◽  
Endocrine Disrupting
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