Nonylphenol polyethoxylate in hospital wastewater: A study of the subproducts of electrocoagulation

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Nonylphenol polyethoxylate in hospital wastewater: A study of the subproducts of electrocoagulation. / Henriques, Danielle M; Kümmerer, Klaus; Mayer, Francieli M et al.
In: Journal of Environmental Science and Health, Part A. Toxic/Hazardous Substances and Environmental Engineering, Vol. 47, No. 3, 01.02.2012, p. 497-505.

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@article{a6e75e3e519a4805937d5b5c18bcaa7e,
title = "Nonylphenol polyethoxylate in hospital wastewater: A study of the subproducts of electrocoagulation",
abstract = "Chromatographic procedures such as solid phase extraction and high performance liquid chromatography coupled with a fluorescence detector (SPE-HPLC-FLD), were carried out to determine the concentrations of the surfactant nonylphenol ethoxylate (9 ethylene oxide units, NP9EO) and its biodegradation product, 4-nonylphenol (NP), in samples collected from the wastewater treatment system at the University Hospital (HUSM) of the Federal University of Santa Maria. The results showed a high concentration of NP9EO in all the collected samples (0.075 - 4.12 mg L 1) and an almost complete absence of NP. In addition, electrocoagulation (EC) of NP9EO was carried out in aqueous solution and in the HUSM effluent. A NP9EO removal rate of 95 % was achieved from the aqueous solution, following a pseudo-first-order kinetics. Through LC-MS measurements in aqueous solutions, it was possible to determine the formation of short-chain nonylphenol ethoxylate (NPEO), such as nonyl-phenoxy acetic acid (NP1EC), after 30 min of EC. In the case of the HUSM wastewater, the NP9EO removal was 89 %, and the chemical oxygen demand (COD) abatement was 26 %. A respirometric test was conducted to measure the increase of biodegradability during the EC and the aqueous samples were found to be less readily biodegradable before the 30-min period of electrocoagulation than after it had been completed.",
keywords = "Chemistry, respirometry, Nonylphenol ethoxylate, nonylpheno, LC-MS, hospital wastewater, Electrocoagulation, Sustainability Science",
author = "Henriques, {Danielle M} and Klaus K{\"u}mmerer and Mayer, {Francieli M} and Vasconcelos, {Tibiri{\c c}a G.} and Martins, {Ayrton F}",
year = "2012",
month = feb,
day = "1",
doi = "10.1080/10934529.2012.640249",
language = "English",
volume = "47",
pages = "497--505",
journal = "Journal of Environmental Science and Health, Part A. Toxic/Hazardous Substances and Environmental Engineering",
issn = "1532-4117",
publisher = "Routledge Taylor & Francis Group",
number = "3",

}

RIS

TY - JOUR

T1 - Nonylphenol polyethoxylate in hospital wastewater

T2 - A study of the subproducts of electrocoagulation

AU - Henriques, Danielle M

AU - Kümmerer, Klaus

AU - Mayer, Francieli M

AU - Vasconcelos, Tibiriça G.

AU - Martins, Ayrton F

PY - 2012/2/1

Y1 - 2012/2/1

N2 - Chromatographic procedures such as solid phase extraction and high performance liquid chromatography coupled with a fluorescence detector (SPE-HPLC-FLD), were carried out to determine the concentrations of the surfactant nonylphenol ethoxylate (9 ethylene oxide units, NP9EO) and its biodegradation product, 4-nonylphenol (NP), in samples collected from the wastewater treatment system at the University Hospital (HUSM) of the Federal University of Santa Maria. The results showed a high concentration of NP9EO in all the collected samples (0.075 - 4.12 mg L 1) and an almost complete absence of NP. In addition, electrocoagulation (EC) of NP9EO was carried out in aqueous solution and in the HUSM effluent. A NP9EO removal rate of 95 % was achieved from the aqueous solution, following a pseudo-first-order kinetics. Through LC-MS measurements in aqueous solutions, it was possible to determine the formation of short-chain nonylphenol ethoxylate (NPEO), such as nonyl-phenoxy acetic acid (NP1EC), after 30 min of EC. In the case of the HUSM wastewater, the NP9EO removal was 89 %, and the chemical oxygen demand (COD) abatement was 26 %. A respirometric test was conducted to measure the increase of biodegradability during the EC and the aqueous samples were found to be less readily biodegradable before the 30-min period of electrocoagulation than after it had been completed.

AB - Chromatographic procedures such as solid phase extraction and high performance liquid chromatography coupled with a fluorescence detector (SPE-HPLC-FLD), were carried out to determine the concentrations of the surfactant nonylphenol ethoxylate (9 ethylene oxide units, NP9EO) and its biodegradation product, 4-nonylphenol (NP), in samples collected from the wastewater treatment system at the University Hospital (HUSM) of the Federal University of Santa Maria. The results showed a high concentration of NP9EO in all the collected samples (0.075 - 4.12 mg L 1) and an almost complete absence of NP. In addition, electrocoagulation (EC) of NP9EO was carried out in aqueous solution and in the HUSM effluent. A NP9EO removal rate of 95 % was achieved from the aqueous solution, following a pseudo-first-order kinetics. Through LC-MS measurements in aqueous solutions, it was possible to determine the formation of short-chain nonylphenol ethoxylate (NPEO), such as nonyl-phenoxy acetic acid (NP1EC), after 30 min of EC. In the case of the HUSM wastewater, the NP9EO removal was 89 %, and the chemical oxygen demand (COD) abatement was 26 %. A respirometric test was conducted to measure the increase of biodegradability during the EC and the aqueous samples were found to be less readily biodegradable before the 30-min period of electrocoagulation than after it had been completed.

KW - Chemistry

KW - respirometry

KW - Nonylphenol ethoxylate

KW - nonylpheno

KW - LC-MS

KW - hospital wastewater

KW - Electrocoagulation

KW - Sustainability Science

UR - http://www.scopus.com/inward/record.url?scp=84857152959&partnerID=8YFLogxK

U2 - 10.1080/10934529.2012.640249

DO - 10.1080/10934529.2012.640249

M3 - Journal articles

C2 - 22320702

VL - 47

SP - 497

EP - 505

JO - Journal of Environmental Science and Health, Part A. Toxic/Hazardous Substances and Environmental Engineering

JF - Journal of Environmental Science and Health, Part A. Toxic/Hazardous Substances and Environmental Engineering

SN - 1532-4117

IS - 3

ER -