Compositional characteristics of dissolved organic matter in pharmaceutical wastewater effluent during ozonation

Shi, Yufei; Li, Shengnan; Wang, Liye; Yu, Qingmiao; Shen, Guochen; Li, Juechun; Xu, Ke; Ren, Hongqiang; Geng, Jinju

doi:10.1016/j.scitotenv.2021.146278

Cited by 25 publications

(3 citation statements)

References 61 publications

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“…Previous work has also shown a lower extraction efficiency for ozonated samples, with DOC recovery values reported between 45% and 55% for ozonated EfOM. 31,32 This indicates that the extraction bias more dramatically affects ozonated EfOM and hence likely also ozonation byproducts.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Lots of research has been conducted on the transformation of OMPs by ozonation, − but less is known about the kind and fate of OBPs formed from EfOM. EfOM is the main consumer of ozone and has been typically considered an interfering substance in the ozonation of OMPs. ,− Ozonation has been shown to transform hydrophobic fractions of EfOM into more hydrophilic and polar products, , and recent work to characterize OBPs from EfOM with mass spectrometric methods found the OBPs from EfOM are more saturated and more oxidized, while the consumed compounds were more condensed and aromatic and less oxidized. ,, Although ozone has been used to enhance the removal of OMPs and other contaminants, some evidence suggests that ozonation may produce OBPs that are less biodegradable and potentially harmful. ,,− Without understanding the OBPs formed during the ozonation of EfOM, it is difficult to assess the environmental risk associated with the release of ozonated EfOM into the environment.…”

Section: Introductionmentioning

confidence: 99%

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Discovery of Polar Ozonation Byproducts via Direct Injection of Effluent Organic Matter with Online LC-FT-ICR-MS

Jennings

Kremser

Han

et al. 2022

Environ. Sci. Technol.

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Effluent organic matter (EfOM), a major ozone consumer during wastewater ozonation, is a complex mixture of natural and anthropogenic organic molecules. Ozonation of EfOM adds to molecular complexity by introducing polar and potentially mobile ozonation byproducts (OBPs). Currently, nontargeted direct infusion (DI) ultrahigh resolution mass spectrometry (e.g. FT-ICR-MS) is used to study OBPs but requires sample extraction, limiting the accessible polarity range of OBPs. To better understand the impact of ozonation on EfOM and the formation of polar OBPs, nonextracted effluent was analyzed by direct injection onto a reversed-phase liquid chromatography system (RP-LC) online hyphenated with an FT-ICR-MS. Over four times more OBPs were detected in nonextracted EfOM compared to effluent extracted with solid phase extraction and measured with DI-FT-ICR-MS (13817 vs 3075). Over 1500 highly oxygenated OBPs were detected exclusively in early eluting fractions of nonextracted EfOM, indicating polar OBPs. Oxygenation of these newly discovered OBPs is higher than previously found, with an average molecular DBE-O value of −3.3 and O/C ratio of 0.84 in the earliest eluting OBP fractions. These polar OBPs are consistently lost during extraction but may play an important role in understanding the environmental impact of ozonated EfOM. Moreover, 316 molecular formulas classified as nonreactive to ozone in DI-FT-ICR-MS can be identified with LC-FT-ICR-MS as isomers with varying degrees of reactivity, providing for the first time experimental evidence of differential reactivity of complex organic matter isomers with ozone.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Discovery of Polar Ozonation Byproducts via Direct Injection of Effluent Organic Matter with Online LC-FT-ICR-MS

Jennings

Kremser

Han

et al. 2022

Environ. Sci. Technol.

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show abstract

“…Rapid industrialization in the last several decades has resulted in a corresponding rise in the demand for fresh water across a wide range of industries. The distillery, [3] pulp and paper mill, [4] textile, [5] pharmaceutical, [6] and sugar industries [7] are significant consumers of water. Because of this, these industries generate a significant amount of effluent, which is then added to surface or ground water and contaminates the water supply.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Industrial Wastewater Treatment Using a Sono‐Alternating Current‐Electrocoagulation Technique with Power Usage Estimation

Asaithambi,

Desta,

Hussen

et al. 2024

ChemElectroChem

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Distillery industrial wastewater (DIW) was tested for color and COD removal percentages using an electrochemical and advanced oxidation processes (AOPs). Specifically, the study compared direct/alternating–current–electrocoagulation (DC‐EC/AC‐EC), sono (US), and direct/alternating current–electrocoagulation coupled with sono (US) (DC‐EC/US and AC‐EC/US) processes. Also evaluated were the effects of these procedures on the power needed to treat DIW. Experimental results showed that compared to single processes such as DC‐EC, AC‐EC, US, hybrid DC‐EC/US, and the hybrid AC‐EC/US process achieved a total color elimination efficiency of 100 % and a COD elimination efficiency of 100 % while using a lower power consumption of 4.76 kWhrm−3. The effects of important operational factors such treatment duration, cycle of pulse duty, sonication power, current density, chemical oxygen demand, electrode spacing, electrode pairing, pH, concentration of electrolyte on the % removal of COD and power usage of DIW were investigated using hybrid AC‐EC/US process. When using a Fe/Fe electrode combination, the effectiveness of COD removal was shown to be enhanced by increasing the treatment duration, current, US power, and decreasing the COD concentration, electrode spacing. The study also provided the results of an investigation into the synergistic index between AC‐EC and US process and operational cost. Based on its ability to efficiently and effectively remove contaminants from wastewater and industrial effluent, the AC‐EC/US approach stands out among the other methods.

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Superior performance of catalytic ozonation on molecular-level transformation of effluent organic matter and self-cleaning property in catalytic ozonation membrane reactor

Li,

Wang,

et al. 2023

Applied Catalysis B: Environmental

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Compositional characteristics of dissolved organic matter in pharmaceutical wastewater effluent during ozonation

Cited by 25 publications

References 61 publications

Discovery of Polar Ozonation Byproducts via Direct Injection of Effluent Organic Matter with Online LC-FT-ICR-MS

Discovery of Polar Ozonation Byproducts via Direct Injection of Effluent Organic Matter with Online LC-FT-ICR-MS

Hybrid Industrial Wastewater Treatment Using a Sono‐Alternating Current‐Electrocoagulation Technique with Power Usage Estimation

Superior performance of catalytic ozonation on molecular-level transformation of effluent organic matter and self-cleaning property in catalytic ozonation membrane reactor

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