Exposure and ecological risk of phthalate esters in the Taihu Lake basin, China

Gao, Xiangyun; Li, Ji; Wang, Xiaonan; Zhou, Junli; Fan, Bo; Li, Wenwen; Liu, Zhengtao

doi:10.1016/j.ecoenv.2019.01.001

Cited by 119 publications

(25 citation statements)

References 42 publications

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“…The HQ method, which mainly consists of the single factor index, Hakanson potential ecological risk index, and Nemerow integrated pollution index, is the most widely used method for evaluating ecological risk (Ke et al 2017;Wu et al 2018). The use of the SSD method has increased in scientific and administrative activities since the 1990 s. Although the SSD method has been used in some studies, compared with the HQ method, the large and precise toxicity data demands in the SSD model hinder the more intensive promotion of the method (Del Signore et al 2016;Zhang et al 2017;Gao et al 2019). The HQ and SSD methods belong to the group of entropy methods.…”

Section: Introductionmentioning

confidence: 99%

Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

Sun

Wang

et al. 2020

Ecosyst Health Sustain

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The coastal area of China has faced major strategic planning and environmental pollution, including heavy metals pollution. This study aimed to provide a comprehensive evaluation of the effects of Cd pollution on the ecology in coastal areas of China. A soil Cd pollution database of 300 counties or districts in coastal areas was screened from academic dissertations and academic journal papers. Based on the database, the ecological risk was evaluated using entropy methods and probabilistic ecological risk assessment (PERA), and the advantages and disadvantages of these methods were analyzed. In China's coastal areas, the soil Cd content in 10.33% of the counties was higher than the minimum of risk control value (1.5 mg/kg), and in 4.00% of the counties was higher than the maximum of risk control value (4.0 mg/kg). The ecological risks were highly compatible with national strategic planning areas. Guangxi Province, Zhejiang Province, and Guangdong Province ranked among the top three coastal areas for soil Cd contamination, and the ecological risks were 18.80%, 17.89%, and 15.77% at the maximum no-effect concentration/lowest effect concentration (NOEC/LOEC) level. This study can provide insights to policymakers regarding the protection of ecosystems threatened by heavy metals in the process of regional strategic planning.

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Section: Introductionmentioning

confidence: 99%

Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

Sun

Wang

et al. 2020

Ecosyst Health Sustain

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“…PAEs can have harmful effects on human health when acute or chronic exposure occurs via ingestion or dermal contact [6][7][8]. The ubiquitous presence of PAEs in water and soil is studied by many researchers to understand and to develop sustainable strategies [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Effects of Persulfate Activation with Pyrite and Zero-Valent Iron for Phthalate Acid Ester Degradation

Imran

Tong

et al. 2020

Water

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Phthalic acid esters (PAEs) are often detected in remediated groundwater using appropriate oxidant materials by in situ groundwater treatment. The study compares zero-valent iron–persulfate with a pyrite–persulfate system to degrade three PAEs—di(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), and dimethyl phthalate (DMP). Column experiments were conducted, and rapid oxidation occurred in a pyrite–persulfate system due to sulfate radical generation. DMP concentration was found at about 60.0% and 53.0% with zero-valent iron (ZVI) and pyrite activation of persulfate, respectively. DBP concentration was measured as 25.0–17.2% and 23.2–16.0% using ZVI–persulfate and pyrite–persulfate systems, respectively. However, DEHP was not detected. The total organic carbon concentration lagged behind the Ʃ3 PAEs. Persulfate consumption with ZVI activation was half of the consumption with pyrite activation. Both systems showed a steady release of iron ions. Overall, the oxidation–reduction potential was higher with pyrite activation. The surface morphologies of ZVI and pyrite were investigated using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and XPS. Intensive corrosion occurs on the pyrite surface, whereas the ZVI surface is covered by a netting of iron oxides. The pyrite surface showed more oxidation and less passivation in comparison with ZVI, which results in more availability of Fe 2 + for persulfate activation. The pyrite–persulfate system is relatively preferred for rapid PAE degradation for contamination.

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“…Phthalate esters (PAEs) are one of the most widely used groups of industrial products [1][2][3]. ey are primarily used in the production of polyvinyl chloride to make it more gentle and flexible [3][4][5] and as plasticizers for building materials and furniture, food packaging, and mosquito repellents [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Anaerobic fermentation of WAS can produce energy biogas methane and achieve sludge reduction while minimizing the number of pathogenic microorganisms in the sludge [35][36][37][38]. A large number of microorganisms, such as acetogens, hydrogenogens, and methanogens, are linked to the anaerobic fermentation process of WAS [1,39,40]. Although anaerobic fermentation is an effective means of dealing with WAS, the existence of a large amount of DEHP in the WAS may affect the microbial community in the WAS anaerobic fermentation system.…”

Section: Introductionmentioning

confidence: 99%

Effect of DEHP on SCFA Production by Anaerobic Fermentation of Waste Activated Sludge

Gong

Tang

Fan

et al. 2020

Advances in Polymer Technology

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Diethylhexyl phthalate (DEHP) is a common plasticizer in industrial production. Recently, environmental problems caused by microplastics have drawn wide attention. As the microplastics have a large specific surface area, the release rate of the plasticizer from the microplastics to the environment is accelerated. e DEHP in the wastewater enters the wastewater treatment plants (WWTPs) along with the urban pipeline. After DEHP enters the WWTPs, it may affect the anaerobic fermentation with waste activated sludge (WAS) as raw material. So far, there has been no study on the effect of DEHP on anaerobic fermentation of WAS. Our study focused on the impact of exogenous DEHP on WAS anaerobic fermentation, and the results showed that DEHP mainly affects the solubilization stage of sludge anaerobic digestion, but has no significant effect on other stages. It does not affect the total yield and composition of short-chain fatty acids (SCFA). However, DEHP inhibited the solubilization process of WAS anaerobic fermentation, which was mainly manifested by the changes of soluble protein and soluble polysaccharide in the system. e results of the analysis of microbial communities revealed that the addition of DEHP did not change the diversity of microbial communities, but caused a change in the abundance of microbial organisms. DEHP reduced the abundance of acetogen bacteria and increased the abundance of methanogens. is work provides some insights into WAS fermentation systems in the presence of DEHP and helps to gain a better understanding of the potential environmental hazards of microplastics.

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Exposure and ecological risk of phthalate esters in the Taihu Lake basin, China

Cited by 119 publications

References 42 publications

Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

Effects of Persulfate Activation with Pyrite and Zero-Valent Iron for Phthalate Acid Ester Degradation

Effect of DEHP on SCFA Production by Anaerobic Fermentation of Waste Activated Sludge

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