2 Citations (Scopus)

Abstract

The present work aimed to evaluate the capacity of constructed wetlands (CWs) to remove three emerging organic contaminants with different physicochemical properties: caffeine (CAF), oxybenzone (MBPh), and triclosan (TCS). The simulated CWs were set up with a matrix of light expanded clay aggregates (LECA) and planted with Spartina maritima, a salt marsh plant. Controlled experiments were carried out in microcosms using deionized water and wastewater collected at a wastewater treatment plant (WWTP), with different contaminant mass ranges, for 3, 7, and 14 days. The effects of variables were tested isolatedly and together (LECA and/or S. maritima). The presence of LECA and/or S. maritima has shown higher removal (around 61-97%) of lipophilic compounds (MBPh and TCS) than the hydrophilic compound (CAF; around 19-85%). This was attributed to the fact that hydrophilic compounds are dissolved in the water column, whereas the lipophilic ones suffer sorption processes promoting their removal by plant roots and/or LECA. In the control (only wastewater), a decrease in the three contaminant levels was observed. Adsorption and bio/rhizoremediation are the strongest hypothesis to explain the decrease in contaminants in the tested conditions.
Original languageEnglish
Pages (from-to)7208-7215
JournalEnvironmental Science and Pollution Research
Volume24
Issue number8
DOIs
Publication statusPublished - 2017

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Waste Water
Wetlands
Triclosan
Light
Caffeine
Plant Roots
Water
Adsorption
Salts
clay

Keywords

  • Constructed wetlands
  • Spartina maritima
  • LECA
  • Emerging organic contaminants
  • Wastewater

Cite this

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title = "Comparative assessment of LECA and Spartina maritima to remove emerging organic contaminants from wastewater",
abstract = "The present work aimed to evaluate the capacity of constructed wetlands (CWs) to remove three emerging organic contaminants with different physicochemical properties: caffeine (CAF), oxybenzone (MBPh), and triclosan (TCS). The simulated CWs were set up with a matrix of light expanded clay aggregates (LECA) and planted with Spartina maritima, a salt marsh plant. Controlled experiments were carried out in microcosms using deionized water and wastewater collected at a wastewater treatment plant (WWTP), with different contaminant mass ranges, for 3, 7, and 14 days. The effects of variables were tested isolatedly and together (LECA and/or S. maritima). The presence of LECA and/or S. maritima has shown higher removal (around 61-97{\%}) of lipophilic compounds (MBPh and TCS) than the hydrophilic compound (CAF; around 19-85{\%}). This was attributed to the fact that hydrophilic compounds are dissolved in the water column, whereas the lipophilic ones suffer sorption processes promoting their removal by plant roots and/or LECA. In the control (only wastewater), a decrease in the three contaminant levels was observed. Adsorption and bio/rhizoremediation are the strongest hypothesis to explain the decrease in contaminants in the tested conditions.",
keywords = "Constructed wetlands , Spartina maritima , LECA, Emerging organic contaminants , Wastewater",
author = "Ribeiro, {Alexandra B.} and Guedes, {Paula R.} and Ferreira, {Ana Rita Lourinho} and Mateus, {Eduardo Manuel Hip{\'o}lito Pires} and Couto, {Maria da Nazar{\'e} Parada Figueiredo de Sousa}",
note = "4KET4Reuse - SOE1/P1/E0253 ; Fundacao para a Ciencia e a Tecnologia - SFRH/BPD/81122/2011; UID/AMB/04085/2013",
year = "2017",
doi = "10.1007/s11356-017-8452-4",
language = "English",
volume = "24",
pages = "7208--7215",
journal = "Environmental Science and Pollution Research",
issn = "0944-1344",
publisher = "Springer Verlag",
number = "8",

}

TY - JOUR

T1 - Comparative assessment of LECA and Spartina maritima to remove emerging organic contaminants from wastewater

AU - Ribeiro, Alexandra B.

AU - Guedes, Paula R.

AU - Ferreira, Ana Rita Lourinho

AU - Mateus, Eduardo Manuel Hipólito Pires

AU - Couto, Maria da Nazaré Parada Figueiredo de Sousa

N1 - 4KET4Reuse - SOE1/P1/E0253 ; Fundacao para a Ciencia e a Tecnologia - SFRH/BPD/81122/2011; UID/AMB/04085/2013

PY - 2017

Y1 - 2017

N2 - The present work aimed to evaluate the capacity of constructed wetlands (CWs) to remove three emerging organic contaminants with different physicochemical properties: caffeine (CAF), oxybenzone (MBPh), and triclosan (TCS). The simulated CWs were set up with a matrix of light expanded clay aggregates (LECA) and planted with Spartina maritima, a salt marsh plant. Controlled experiments were carried out in microcosms using deionized water and wastewater collected at a wastewater treatment plant (WWTP), with different contaminant mass ranges, for 3, 7, and 14 days. The effects of variables were tested isolatedly and together (LECA and/or S. maritima). The presence of LECA and/or S. maritima has shown higher removal (around 61-97%) of lipophilic compounds (MBPh and TCS) than the hydrophilic compound (CAF; around 19-85%). This was attributed to the fact that hydrophilic compounds are dissolved in the water column, whereas the lipophilic ones suffer sorption processes promoting their removal by plant roots and/or LECA. In the control (only wastewater), a decrease in the three contaminant levels was observed. Adsorption and bio/rhizoremediation are the strongest hypothesis to explain the decrease in contaminants in the tested conditions.

AB - The present work aimed to evaluate the capacity of constructed wetlands (CWs) to remove three emerging organic contaminants with different physicochemical properties: caffeine (CAF), oxybenzone (MBPh), and triclosan (TCS). The simulated CWs were set up with a matrix of light expanded clay aggregates (LECA) and planted with Spartina maritima, a salt marsh plant. Controlled experiments were carried out in microcosms using deionized water and wastewater collected at a wastewater treatment plant (WWTP), with different contaminant mass ranges, for 3, 7, and 14 days. The effects of variables were tested isolatedly and together (LECA and/or S. maritima). The presence of LECA and/or S. maritima has shown higher removal (around 61-97%) of lipophilic compounds (MBPh and TCS) than the hydrophilic compound (CAF; around 19-85%). This was attributed to the fact that hydrophilic compounds are dissolved in the water column, whereas the lipophilic ones suffer sorption processes promoting their removal by plant roots and/or LECA. In the control (only wastewater), a decrease in the three contaminant levels was observed. Adsorption and bio/rhizoremediation are the strongest hypothesis to explain the decrease in contaminants in the tested conditions.

KW - Constructed wetlands

KW - Spartina maritima

KW - LECA

KW - Emerging organic contaminants

KW - Wastewater

U2 - 10.1007/s11356-017-8452-4

DO - 10.1007/s11356-017-8452-4

M3 - Article

VL - 24

SP - 7208

EP - 7215

JO - Environmental Science and Pollution Research

JF - Environmental Science and Pollution Research

SN - 0944-1344

IS - 8

ER -