Endocrine disrupting compounds: A comparison of removal between conventional activated sludge and membrane bioreactors

Cases, V.; Alonso, V.; Argandoña, V.; Rodrı́guez, Manuel; Prats, Daniel

doi:10.1016/j.desal.2011.01.026

Cited by 53 publications

(19 citation statements)

References 18 publications

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“…; Cases et al . ) indicated that various EDCs at low concentrations(< 1 μg/L) were present in the influents of sewage treatment plants (STPs), and the present treatment processes in STPs could not realise the complete removal of the researched EDCs, and thus many EDCs were found in the effluents. Discharge of effluents could, therefore, be recognised as the important point source for EDCs to enter into the aquatic environment (Joss et al .…”

Section: Introductionmentioning

confidence: 99%

Fate and removal of selected endocrine‐disrupting compounds in sewage using activated sludge treatment

Zhou

Lai

et al. 2012

Water & Environment J

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The variation and fate of four endocrine‐disrupting compounds (EDCs) composed of 4‐n‐nonylphenol (4‐n‐NP), bisphenol A (BPA), 17β‐estradiol (E2) and 17α‐ethinylestradiol (EE2) were investigated along treatment units in a sewage treatment plant (STP), China with anaerobic, anoxic and aerobic activated sludge processes. The mean concentrations were 64.8 ng/L (E2), 115.3 ng/L (4‐n‐NP), 171.5 ng/L (EE2), and 920.7 ng/L (BPA) in the influents, and 22.8 ng/L (E2), 50.9 ng/L (4‐n‐NP), 49.9 ng/L (EE2), and 84.3 ng/L (BPA) in the effluents. The biological treatment was more effective in removing NP, BPA and E2 from the aqueous phase than the primary treatment, while the latter could effectively remove EE2. Their possible removal mechanisms during the biological treatment with activated sludge were further explored through spiked batch experiments under three oxygen‐supplying conditions (anaerobic, anoxic and aerobic). The batch experiments showed that 4‐n‐NP, E2 and BPA were removed from the aqueous phase through biodegradation. The combination of sludge sorption and biodegradation accounted for the removal of EE2. Anoxic activated sludge showed the most rapid degradation of 4‐n‐NP, while E2 could be removed most effectively by aerobic activated sludge, and sludge sorption had a remarkable effect on its removal within the initial 15 min of the experiments under three oxygen‐supplying conditions.

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Section: Introductionmentioning

confidence: 99%

Fate and removal of selected endocrine‐disrupting compounds in sewage using activated sludge treatment

Zhou

Lai

et al. 2012

Water & Environment J

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“…Bisphenol A (BPA) is one of the phenolic compounds that is produced by condensation reaction of acetone and phenol [3] using an ionexchange resin as catalyst [4]. BPA is used in manufacture of polycarbonate, epoxy resins, polysulfone, flame retardants, PVC, dental care, baby bottles, and other industrial goods [5][6][7][8]. BPA is in group of endocrine disrupting compounds (EDCS) [6] that these compounds have potential for adverse effects on human and wildlife [9].…”

Section: Introductionmentioning

confidence: 99%

Application of low-pressure reverse osmosis for effective recovery of bisphenol A from aqueous wastes

Khazaali

Kargari

Rokhsaran

2014

Desalination and Water Treatment

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A B S T R A C TIn this study, bisphenol A (BPA) was removed from aqueous solutions using a low-pressure reverse osmosis system. The influence of various parameters such as feed pressure (136-544 kPa), feed flow rate (0.25-1.172 L/min), feed concentration (30-100 mg/L), and pH (8, 10, and 11) on BPA rejection was investigated. The results showed a maximum rejection of 87.34% for a 50 mg/L feed concentration at 408.1 kPa, pH 8, and 1.172 L/min feed flow rate. The effect of feed pressure on BPA rejection, showed a critical pressure at which the maximum rejection was observed. This critical pressure was measured to be in the range of 408-476 kPa. The most effective parameter on the BPA rejection was feed flow rate which showed a severe concentration polarization at the surface of the membrane. The effect of feed pH revealed a minimum rejection at pH 10.

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“…Endocrine Disrupting Chemicals (EDCs) are of increasing concern in recent times, as they pose a threat to human health and the environment [1,2]. These chemicals are capable of impacting negatively on the endocrine systems of humans and wildlife [3].…”

Section: Introductionmentioning

confidence: 99%

An Evaluation of the Removal of Progesterone in Wastewater by Adsorption onto Waste Tea Leaves

Osamor¹,

Noble²

2016

Fourth International Conference on Advances in Applied Science and Environmental Technology- ASET 2016

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The removal of endocrine disrupting chemical progesterone by adsorption onto waste black tea leaves was investigated in laboratory-scale experiments. The removal efficiency was compared with the widely used granular activated carbon (GAC). The performance of waste black tea leaves for the adsorption of progesterone was found to be comparable to conventional GAC. The maximum adsorption capacities for tea leaves and GAC were 1.8 mg/g and 1.4 mg/g respectively. The values for the thermodynamic parameters associated with sorption of progesterone onto tea leaves were Gibb's free energy (-6.0 KJ/mol), enthalpy (-3.7 KJ/ mol) and entropy (8.0 J/mol K), indicating that the sorption process was favorable, spontaneous and involved physical adsorption held by Van der Waal forces. The adsorption was guided by diffusion within the pores of the tea leaves.

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Endocrine disrupting compounds: A comparison of removal between conventional activated sludge and membrane bioreactors

Cited by 53 publications

References 18 publications

Fate and removal of selected endocrine‐disrupting compounds in sewage using activated sludge treatment

Fate and removal of selected endocrine‐disrupting compounds in sewage using activated sludge treatment

Application of low-pressure reverse osmosis for effective recovery of bisphenol A from aqueous wastes

An Evaluation of the Removal of Progesterone in Wastewater by Adsorption onto Waste Tea Leaves

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