Alkylphenol Polyethoxylate Removal in a Pilot‐Scale Reed Bed and Phenotypic Characterization of the Aerobic Heterotrophic Community

Sacco, Cristiana; Pizzo, Anna Maria; E, Tiscione; Burrini, D.; Messeri, Luca; Lepri, Luciano; Bubba, Massimo Del

doi:10.2175/106143005x72975

Cited by 15 publications

(9 citation statements)

References 43 publications

(41 reference statements)

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“…Average efficiency of the nonionic surfactant removal from wastewater was 98.2% in 2011. This efficiency is comparable or even greater than that reported by Belmont et al [28,29] It also confirms the conclusion of Sacco et al [30] that constructed wetlands are able effectively to degrade nonionic surfactants. The average outflow concentration of nonionic surfactants was 0.021 mg/L.…”

Section: Degradation Of Nonionic Surfactantssupporting

confidence: 87%

“…[29] Those authors reported average removal of NPEO between 78% and 91%, with most of the removal occurring in parts of the wetland where sedimentation occurred. Sacco et al [30] studied the potential of a pilot-scale subsurface horizontal-flow reed bed in terms of Triton R X-100 removal. They showed that constructed wetlands could work effectively in its degradation.…”

Section: Introductionmentioning

confidence: 99%

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Degradation of surface-active compounds in a constructed wetland determined using high performance liquid chromatography and extraction spectrophotometry

Šíma

Pazderník

Tříska

et al. 2013

Journal of Environmental Science and Health, Part A

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Degradation of anionic and nonionic surfactants in a constructed wetland with horizontal subsurface flow was studied using high performance liquid chromatography and extraction spectrophotometry. The ratio of individual homologues of linear alkylbenzene sulfonates (LAS) and the efficiency of their removal were studied. Tridecyl-, dodecyl-, undecyl-, and decylbenzene sulfonates were removed with efficiencies of 92.9%, 84.3%, 64.7%, and 41.1%, respectively. These differences are due to sequential shortening of the alkyl chain in homologues during degradation (the higher homologue can provide the lower one). The formation of sulfophenyl carboxylic acids during ω-oxidation of the alkyl chain followed by successive α- and/or β-oxidation is also a possible mechanism for removal of LAS. Solid phase extraction using Chromabond® HR-P columns was used for preconcentration of the analytes prior to their determination by HPLC. Methylene blue active compounds were determined using extraction spectrophotometry. The average efficiency of their removal was 84.9% in this case. The efficiency of nonionic surfactant removal (98.2%) was significantly higher in comparison to that for anionic surfactants. The concentration of the endocrine disruptor nonylphenol (a product of nonylphenol polyethoxylate surfactant degradation) determined in the profile of the wetland was beneath the limit of detection (0.4 μg/L). The average outflow concentrations of anionic and nonionic surfactants determined by spectrophotometry were 0.54 and 0.021 mg/L, respectively. The average outflow concentrations of decyl- and tridecylbenzene sulfonates determined by HPLC were 0.195 and 0.015 mg/L. Efficiencies of 86.4% and 92.2% were obtained for removal of organic compounds as indicated by chemical and biochemical oxygen demand (COD(Cr) and BOD(5)). These results demonstrate the suitability of the constructed wetland for degrading surface-active compounds.

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Section: Degradation Of Nonionic Surfactantssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Degradation of surface-active compounds in a constructed wetland determined using high performance liquid chromatography and extraction spectrophotometry

Šíma

Pazderník

Tříska

et al. 2013

Journal of Environmental Science and Health, Part A

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“…Although bacteria from the Aeromonas and Pseudomonas genera are known to be involved in aerobic degradation of anionic surfactants (Asok and Jisha 2012; Chaturvedi and Kumar 2011; Jimenez et al 1991; Sacco et al 2006), the ability of A. hydrophila , P. stutzeri , and P. nitroreducens to use SLES as sole carbon and energy source coupled to nitrate or oxygen reduction was never shown before. In this work we verified that A. hydrophila (DSM 30187 T ) and P. stutzeri (CCUG 11256 T ) type strains cannot degrade SLES with nitrate as electron acceptor, which shows that SLES degradation might be a specific physiological ability of isolates S7 and S8.…”

Section: Discussionmentioning

confidence: 99%

Sodium lauryl ether sulfate (SLES) degradation by nitrate-reducing bacteria

Paulo

Aydın

Dimitrov

et al. 2017

Appl Microbiol Biotechnol

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The surfactant sodium lauryl ether sulfate (SLES) is widely used in the composition of detergents and frequently ends up in wastewater treatment plants (WWTPs). While aerobic SLES degradation is well studied, little is known about the fate of this compound in anoxic environments, such as denitrification tanks of WWTPs, nor about the bacteria involved in the anoxic biodegradation. Here, we used SLES as sole carbon and energy source, at concentrations ranging from 50 to 1000 mg L−1, to enrich and isolate nitrate-reducing bacteria from activated sludge of a WWTP with the anaerobic-anoxic-oxic (A2/O) concept. In the 50 mg L−1 enrichment, Comamonas (50%), Pseudomonas (24%), and Alicycliphilus (12%) were present at higher relative abundance, while Pseudomonas (53%) became dominant in the 1000 mg L−1 enrichment. Aeromonas hydrophila strain S7, Pseudomonas stutzeri strain S8, and Pseudomonas nitroreducens strain S11 were isolated from the enriched cultures. Under denitrifying conditions, strains S8 and S11 degraded 500 mg L−1 SLES in less than 1 day, while strain S7 required more than 6 days. Strains S8 and S11 also showed a remarkable resistance to SLES, being able to grow and reduce nitrate with SLES concentrations up to 40 g L−1. Strain S11 turned out to be the best anoxic SLES degrader, degrading up to 41% of 500 mg L−1. The comparison between SLES anoxic and oxic degradation by strain S11 revealed differences in SLES cleavage, degradation, and sulfate accumulation; both ester and ether cleavage were probably employed in SLES anoxic degradation by strain S11.Electronic supplementary materialThe online version of this article (doi:10.1007/s00253-017-8212-x) contains supplementary material, which is available to authorized users.

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“…The significant linear correlation (R 2 =0.36, P<0.01) found when TSS removal percentages were plotted as a function of wetland temperatures (graph not shown) supported the last hypothesis. 34 In spite of the high removal percentage, it should be underlined that outlet COD and polyphenol concentrations remained high and were included in very wide ranges (COD T : 1120-7510 mg/L; COD S : 908-7500 mg/L; polyphenols: 28-1450 mg/L). The trends of the daily amounts of Total-P and, above all, TKN were similar to that described for TSS.…”

Section: Omw Treatment By the Ssf-h Constructed Wetland At The Dilutimentioning

confidence: 99%

Olive Mill Wastewater Treatment by a Pilot‐Scale Subsurface Horizontal Flow (SSF‐h) Constructed Wetland

et al. 2004

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Performances of a pilot-scale reed bed for the olive mill wastewater (OMW) treatment were investigated, by monitoring influent and effluent pH, total suspended solids (TSS), chemical oxygen demand (COD), total Kjeldahl nitrogen (TKN), total phosphorus and polyphenols. In order to reduce the suspended matter concentration and to avoid clogging, OMW was pre-treated by adding lime putty, calcium hydroxide and hydraulic lime. The best results were obtained with 2 g/L of hydraulic lime. Pre-treated OMW was dosed in the reed bed at dilution ratios of 1/3 and 1/10 (v/v), pointing up that the latter only did not give rise to reed suffering and allowed to obtain good and durable removal efficiencies, above all for COD (74.1+/-17.6%) and polyphenols (83.4+/-17.8%). Recycling of the effluent was quite effective for the improvement of the wastewater quality, allowing a further removal of 26-70%, depending on the parameter taken into account. A post-dosage study, carried out by feeding the reed bed with the effluent of an activated sludge plant, pointed up a rapid decreasing of the outlet concentrations of the investigated parameters to values compatible with Italian regulations concerning wastewater discharge in surface water. Polyphenols were the exception, being their outlet concentration at the end of post-dosage study around 2 mg/L.

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Alkylphenol Polyethoxylate Removal in a Pilot‐Scale Reed Bed and Phenotypic Characterization of the Aerobic Heterotrophic Community

Cited by 15 publications

References 43 publications

Degradation of surface-active compounds in a constructed wetland determined using high performance liquid chromatography and extraction spectrophotometry

Degradation of surface-active compounds in a constructed wetland determined using high performance liquid chromatography and extraction spectrophotometry

Sodium lauryl ether sulfate (SLES) degradation by nitrate-reducing bacteria

Olive Mill Wastewater Treatment by a Pilot‐Scale Subsurface Horizontal Flow (SSF‐h) Constructed Wetland

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