Comparison of ozone and HO induced conversion of effluent organic matter (EfOM) using ozonation and UV/H2O2 treatment

Audenaert, Wim; Vandierendonck, Dieter; Hulle, Stijn Van; Nopens, Ingmar

doi:10.1016/j.watres.2013.02.003

Cited by 121 publications

(88 citation statements)

References 44 publications

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“…The relative reduction in the UV absorbance of EfOM during AOP treatment was strongly and unambiguously correlated with the removal of emerging micropollutants such as pharmaceutical and personal care products (PPCPs) [79]. Studies showed that these unselectively active radicals tend to attack more oxygen-rich, less hydrophobic, and more biodegradable EfOM molecules [80]. Meanwhile, OH· can react with fluorophores and consistently reduce EfOM fluorescence.…”

Section: Aops For Treatment Of Effluent Organic Matters In Biologicalmentioning

confidence: 94%

Advanced Oxidation Processes (AOPs) in Wastewater Treatment

2015

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Advanced oxidation processes (AOPs) were first proposed in the 1980s for drinking water treatment and later were widely studied for treatment of different wastewaters. During the AOP treatment of wastewater, hydroxyl radicals (OH·) or sulfate radicals (SO 4 ·− ) are generated in sufficient quantity to remove refractory organic matters, traceable organic contaminants, or certain inorganic pollutants, or to increase wastewater biodegradability as a pre-treatment prior to an ensuing biological treatment. In this paper, we review the fundamental mechanisms of radical generation in different AOPs and select landfill leachate and biologically treated municipal wastewater as model wastewaters to discuss wastewater treatment with different AOPs. Generally, the treatment efficiencies rely heavily upon the selected AOP type, physical and chemical properties of target pollutants, and operating conditions. It would be noted that other mechanisms, besides hydroxyl radical or sulfate radical-based oxidation, may occur during the AOP treatment and contribute to the reduction of target pollutants. Particularly, we summarize recent advances in the AOP treatment of landfill leachate, as well as advanced oxidation of effluent organic matters (EfOM) in biologically treated secondary effluent (BTSE) for water reuse.

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Section: Aops For Treatment Of Effluent Organic Matters In Biologicalmentioning

confidence: 94%

Advanced Oxidation Processes (AOPs) in Wastewater Treatment

2015

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“…Although much information is already available for low strength wastewater streams (e.g. secondary effluent of municipal wastewater treatment plants (WWTPs) [19]), studies about the oxidative treatment of high strength wastewater streams such as biologically treated landfill leachate to understand the occurring reactions are rather scarce. A more profound knowledge is needed for successful implementation of advanced processes in full-scale treatment trains.…”

Section: Introductionmentioning

confidence: 99%

“…However, some authors already used UV-vis to acquire more in-depth information on ozonation of low strength wastewater streams. For example, Nanaboina and Korshin [21] and Audenaert et al [19] obtained differential absorbance spectra (DAS; difference between the initial spectrum and spectra after a certain treatment time) from UVvis measurements [19,21]. Based on DAS, besides a decreasing overall absorbance, also differences between different wavelengths can be seen.…”

Section: Introductionmentioning

confidence: 99%

“…Based on DAS, besides a decreasing overall absorbance, also differences between different wavelengths can be seen. It was shown that some wavelengths (especially those within the 260-280 nm range) are more impacted by ozone oxidation than others [19,21]. Based on normalized DAS (changes in DAS are plotted relatively to a single wavelength), Audenaert et al [19] hypothesized that compounds absorbing at higher wavelengths were transformed to products absorbing at lower wavelengths during O 3 treatment [19].…”

Section: Introductionmentioning

confidence: 99%

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Ozonation of biologically treated landfill leachate: efficiency and insights in organic conversions

Chys

Oloibiri

Audenaert

et al. 2015

Chemical Engineering Journal

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“…UV/H 2 O 2 is based on the in-situ generation of Å OH, which can unselectively and efficiently oxidize a wide range of organic pollutants. Ozone and UV/H 2 O 2 treatments are promising technologies because they are able to oxidize micropollutants, transform natural organic matter (NOM), and inactivate pathogens simultaneously [13]. Compared with other advanced treatments such as Fenton's regent oxidation, membrane filtration and activated carbon adsorption, ozone and UV/H 2 O 2 have no requirement for pH adjustment, sludge disposal, membrane backwash, or adsorbent regeneration, thus are commonly applied for water and wastewater treatment [12,14].…”

Section: Introductionmentioning

confidence: 99%

Removal of organophosphate esters from municipal secondary effluent by ozone and UV/H2O2 treatments

Yuan

Lacorte

Cristale

et al. 2015

Separation and Purification Technology

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a b s t r a c tOrganophosphate esters (OPEs) have emerged as a new class of contaminants due to their massive use as flame retardants and plasticizers. These contaminants are toxic to aquatic organisms and some of them are not biodegradable in wastewater treatment plants. This study investigated the degradation kinetics of eight typical OPEs during ozone and UV/H 2 O 2 treatments in Milli-Q water, humic acid (HA) solution, and municipal secondary effluent. The studied OPEs included three chlorinated: tris(2-chloroethyl) phosphate (TCEP), tris(chloropropyl) phosphate (TCPP) and tris(dichloropropyl) phosphate (TDCP); two aromatic: triphenyl phosphate (TPhP) and tricresyl phosphate (TCrP); and three aliphatic: tri-n-butyl phosphate (TnBP), tris(2-butoxyethyl) phosphate (TBEP), and tris(2-ethylhexyl) phosphate (TEHP). Results indicate that the degradation of target OPEs conformed to the pseudo-first-order kinetics and UV/H 2 O 2 was more effective than ozone for their elimination by comparing the overall removal efficiencies and energy consumptions. Two aromatic and two aliphatic OPEs (i.e., TPhP, TCrP, TnBP and TBEP) were effectively degraded by ozone and UV/H 2 O 2 in the test water matrices, while all chlorinated and one aliphatic OPEs (i.e., TCEP, TCPP, TDCP and TEHP) were found to be recalcitrant to oxidation. Moreover, the presence of HA significantly enhanced the degradation of reactive OPEs in ozone treatment.

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Comparison of ozone and HO induced conversion of effluent organic matter (EfOM) using ozonation and UV/H2O2 treatment

Cited by 121 publications

References 44 publications

Advanced Oxidation Processes (AOPs) in Wastewater Treatment

Advanced Oxidation Processes (AOPs) in Wastewater Treatment

Ozonation of biologically treated landfill leachate: efficiency and insights in organic conversions

Removal of organophosphate esters from municipal secondary effluent by ozone and UV/H2O2 treatments

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