Structural characterization of organic intermediates arising from xylenol degradation by laboratory-scale constructed wetlands

Poerschmann, Juergen; Schultze-Nobre, Luciana

doi:10.1016/j.chemosphere.2013.12.041

Cited by 6 publications

(9 citation statements)

References 35 publications

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“…It has been conclusively shown by Munch et al (2005) that roots and rhizomes of Phragmites australis transfer oxygen into porous media. (ii) Higher concentration of microorganisms including bacteria, which was evidenced by higher concentration of diagnostic fatty acid biomarkers (Poerschmann and Schultze-Nobre, 2014), was related to higher concentration of oxidative coupling intermediates.…”

Section: Biphenyl-and Diphenylether-type Products Under Aerobic and Amentioning

confidence: 99%

“…Extraction of lyophilizates was performed by the combined extraction/derivatization procedure as detailed in Poerschmann and Schultze-Nobre (2014). Derivatization agents included BSTFA to form TMS ethers and acetic acid anhydride/pyridine to yield acetates.…”

Section: Sample Preparationmentioning

confidence: 99%

“…The experimental design was detailed in Poerschmann and Schultze-Nobre (2014). Briefly, a glass reactor (28 cm in diameter and 30 cm in height) was filled with gravel, which was then densely rooted with Juncus effusus.…”

Section: Laboratory-scale Constructed Wetland Designmentioning

confidence: 99%

“…In a former contribution (Poerschmann and Schultze-Nobre, 2014) it has been shown that hydrophilic organic intermediates are formed during horizontal flow helophyte-based phytoremediation of xylenols. Intermediates include low-chain and mid-chain functionalized organics including acetic acid, oxalic acid, citraconic acid, quinones and benzenediols.…”

Section: Introductionmentioning

confidence: 99%

“…Anaerobic conditions were adjusted by higher xylenol concentrations (100 lg g À1 total concentration, 33.3 lg g À1 concentration each) to provide oxygendeficient conditions due to the consumption of xylenol-based organic carbon (OC). Effluents from the laboratory-scale constructed wetland were lyophilized and subjected to the combined extraction-derivatization scheme as presented in Poerschmann and Schultze-Nobre (2014). To produce GC-amenable analytes, the extracts were subjected to silylation to produce trimethylsilyl ethers (TMS).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Identification of oxidative coupling products of xylenols arising from laboratory-scale phytoremediation

et al. 2015

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Section: Biphenyl-and Diphenylether-type Products Under Aerobic and Amentioning

confidence: 99%

Section: Sample Preparationmentioning

confidence: 99%

Section: Laboratory-scale Constructed Wetland Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Identification of oxidative coupling products of xylenols arising from laboratory-scale phytoremediation

et al. 2015

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Removal of dimethylphenols and ammonium in laboratory‐scale horizontal subsurface flow constructed wetlands

Schultze-Nobre

Wießner

Bartsch

et al. 2017

Engineering in Life Sciences

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Phenolic compounds in industrial wastewaters are toxic pollutants and pose a threat to public health and ecosystems. More recently, focus is being directed toward combining the treatment of these compounds with a cost‐effective and environmentally sound technology. The removal efficiency of dimethylphenol and ammonium nitrogen was studied, for the first time, in three different laboratory‐scale horizontal subsurface flow constructed wetlands planted with Juncus effusus. Two of the wetlands used were filled with gravel. One of these was planted and the second left without vegetation. The third wetland was a hydroponic system. It was found that the removal efficiencies of dimethylphenol was dependent on the inflow loading of the contaminant and was higher in the planted systems. Both planted systems yielded 99% removal efficiency up to loads of 240 mg/d, compared to only 73% for the unplanted constructed wetland. Factors and processes such as redox dynamics, methanogenesis, reduction of ammonium and low nitrate and nitrite concentrations imply simultaneous aerobic and anaerobic dimethylphenol transformations. A significant surplus of organic carbon was detected in the planted wetlands, which may originate from intermediates of the dimethylphenol transformation processes and/or organic plant root exudates. The present study demonstrates that horizontal subsurface flow constructed wetlands are a promising alternative system for the treatment of effluents contaminated with dimethylphenol isomers.

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The transition toward the Messinian evaporites identified by biomarker records in the organic-rich shales of the Tripoli Formation (Sicily, Italy)

Nádudvari

Forzese

Maniscalco

et al. 2022

International Journal of Coal Geology

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Structural characterization of organic intermediates arising from xylenol degradation by laboratory-scale constructed wetlands

Cited by 6 publications

References 35 publications

Identification of oxidative coupling products of xylenols arising from laboratory-scale phytoremediation

Identification of oxidative coupling products of xylenols arising from laboratory-scale phytoremediation

Removal of dimethylphenols and ammonium in laboratory‐scale horizontal subsurface flow constructed wetlands

The transition toward the Messinian evaporites identified by biomarker records in the organic-rich shales of the Tripoli Formation (Sicily, Italy)

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