Occurrence, fate and effects of Di (2-ethylhexyl) phthalate in wastewater treatment plants: A review

Abstract. Negative and effectively "irreversible" changes in the environment have often been caused by one or more factors including the intensive development of new technologies, progressing urbanisation andabove all -insufficient knowledge of the properties and toxic effects of many chemicals used. Hundreds of non-natural compounds capable of exerting a negative effect on the natural environment have now been identified in it, including within the broad categories of pesticides, polychlorinated biphenyls and polycyclic aromatic hydrocarbons. Such new and emerging pollutants pose a serious threat to living organisms on account of their tendency to accumulate in certain parts of the environment. Furthermore, the substances in question may prove toxic and harmful to human beings and the environment even at low concentrations. Work described here thus had as its objective an analysis of the pollution of surface water in Poland in terms of content of organic compounds in general, and the aforementioned emerging organic pollutants in particular. Results confirm the presence in waters of such substances as phthalic esters, polybrominated diphenylethers, and organic tin compounds. Reference to average values for individual parameters in the cases of different rivers and lakes further show that, as of 2014-15, the various Polish surface waters researched were characterised by similar levels of pollution, other than in the case of naphthalene.

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“…This latter maximum was noted in Spain. The distribution of DEHP in groundwater is found to relate to the concentration in surface waters [21].…”

Section: Resultsmentioning

confidence: 99%

Selected EPs in the water of certain Polish lakes and rivers

Ziembowicz¹,

Kida²,

Koszelnik³

2018

E3S Web Conf.

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“…Trace organic compounds are divided into different groups based on their charge and hydrophobicity. Di 2-ethyl hexyl phthalate (DEHP) is highly hydrophobic, negatively charged plasticizer (Zolfaghari et al 2014). Fluoranthene is the positive charged, hydrophobic compound with log Kow of 4.5.…”

Section: Introductionmentioning

confidence: 99%

Unwanted metals and hydrophobic contaminants in bioreactor effluents are associated with the presence of humic substances

et al. 2016

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Biological treatment of landfill leachate is difficult due to the presence of complex compounds.Here we treated an old landfill leachate using a membrane bioreactor under the following conditions 24 hours for hydraulic retention, 65 days of sludge retention and an average organic load rate of 1.71±0.16 g/L/day. We observed a high removal of ammonia, phosphorous and some metals. However, removal of organic carbon was incomplete. Specifically, despite a major removal of suspended solids, hydrophobic and volatile hydrophilic compounds; high concentration of fulvic acid and hydrophilic contaminants were found in the effluent. Overall we demonstrate that the presence humic substances in the effluent is associated with the detection of arsenic, copper and chromium and di(2-ethylhexyl) phthalate.

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“…Negative charged, highly hydrophobic DEHP (low pKa and high Log Kow), is the most utilized plasticizer and phthalate acid ester, with concentration up to 120 µg/L and is representative of highly hydrophobic organic compounds [2]; while positive charged hydrophobic FLAN is considered as a representative of polycyclic aromatic hydrocarbon family which is carcinogenic [5] and widely present in refinery and petrochemical plant wastewater. Finally, neutral hydrophilic CBZ belongs to the pharmaceutical compounds with very low biodegradability [4].…”

Section: Introductionmentioning

confidence: 99%

“…Even at the trace concentration, they were recognized as a biological hazard for aquatic and land organisms [1]. Bioaccumulation and biomagnification of emerging contaminants gradually introduced them into the human body, finally led to the hormone interruption and cancer [2]. It could be hypothesized that large portion of trace organic carbons (TrOCs) readily escape from wastewater treatment plants, by two main reasons: (1) adsorption to the recalcitrant complex dissolve organic matter (DOM), such as humic substances, and (2) no interaction with sludge.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, three TrOCs were selected according to their hydrophobicity and charge (Table 1) Table 1, the mentioned compounds have low volatility and biodegradability; they have also been frequently detected in wastewater and landfill leachate worldwide and categorized in the US Environmental Protection Agency priorities list [2,4,5]. Negative charged, highly hydrophobic DEHP (low pKa and high Log Kow), is the most utilized plasticizer and phthalate acid ester, with concentration up to 120 µg/L and is representative of highly hydrophobic organic compounds [2]; while positive charged hydrophobic FLAN is considered as a representative of polycyclic aromatic hydrocarbon family which is carcinogenic [5] and widely present in refinery and petrochemical plant wastewater.…”

Section: Introductionmentioning

confidence: 99%

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Insight into the adsorption mechanisms of trace organic carbon on biological treatment process

Zolfaghari

Drogui

Brar

et al. 2016

Environmental Technology

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Presence of recalcitrant dissolved organic matter (DOM) could have a significant effect on the adsorption mechanism and capacity of the sludge for many trace organic carbons (TrOCs), especially for the hydrophobic and/or positively charged compounds. In this study, adsorption of three TrOCs on the sludge and humic acid was investigated. The results revealed that neutral hydrophilic compounds had an insignificant interaction with both sludge and humic acid.Positively charged compounds like Fluoranthene, had more affinity toward humic acid than sludge with solid/liquid partitioning of 57, and 3.2 L/gTS for HA and sludge, respectively.Adsorption mechanism of negatively charged TrOCs, was largely determined by strong interaction between adsorbate and adsorbent. Therefore, adsorption intensity (Kf) of Di 2-ethyl hexyl phthalate was 0.5 and 1.13 for the humic acid and the sludge, respectively. By introducing the sludge to the solution of humic acid and TrOCs that already reached equilibrium, the ability of sludge to uptake TrOCs from DOM was also investigated. The findings showed that at the lower concentration, adsorption of humic acid on the sludge was considered as the main removal pathway for the adsorbed emerging contaminants, as 70 mg of HA adsorbed by a gram of sludge.For the higher concentration, desorption of TrOCs from DOM into the sludge comprised 15 to 30% of total removal efficiency.

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Occurrence, fate and effects of Di (2-ethylhexyl) phthalate in wastewater treatment plants: A review

Cited by 158 publications

References 145 publications

Selected EPs in the water of certain Polish lakes and rivers

Selected EPs in the water of certain Polish lakes and rivers

Unwanted metals and hydrophobic contaminants in bioreactor effluents are associated with the presence of humic substances

Insight into the adsorption mechanisms of trace organic carbon on biological treatment process

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