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Roles of root porosity, radial oxygen loss, Fe plaque formation on nutrient removal and tolerance of wetland plants to domestic wastewater

Root properties including rates of radial oxygen loss (ROL), root porosity, and Fe plaque formation on the root surface, in six wetland plant species, namely , var. , , , , and , and their relationships with nutrient removal and tolerance to domestic wastewater were investigated. Results showed that... Full description

Journal Title: Water Research 01 March 2014, Vol.50, pp.147-159
Main Author: Mei, Xiu-Qin
Other Authors: Yang, Yang , Tam, Nora Fung-Yee , Wang, Ya-Wen , Li, Li
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0043-1354 ; E-ISSN: 1879-2448 ; DOI: 10.1016/j.watres.2013.12.004
Link: https://www.sciencedirect.com/science/article/pii/S0043135413010014
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recordid: elsevier_sdoi_10_1016_j_watres_2013_12_004
title: Roles of root porosity, radial oxygen loss, Fe plaque formation on nutrient removal and tolerance of wetland plants to domestic wastewater
format: Article
creator:
  • Mei, Xiu-Qin
  • Yang, Yang
  • Tam, Nora Fung-Yee
  • Wang, Ya-Wen
  • Li, Li
subjects:
  • Rates of Rol
  • Porosity
  • Fe Plaque
  • Domestic Wastewater Tolerance
  • Nutrient Removal
  • Rhizosphere
  • N/P Accumulation
  • Engineering
ispartof: Water Research, 01 March 2014, Vol.50, pp.147-159
description: Root properties including rates of radial oxygen loss (ROL), root porosity, and Fe plaque formation on the root surface, in six wetland plant species, namely , var. , , , , and , and their relationships with nutrient removal and tolerance to domestic wastewater were investigated. Results showed that different species had different root porosities (18–36%) and Fe plaque formation (1.76–5.3 mg Fe g root d.w.), which were significantly correlated with ROL (67–157 mmol O  kg root d.w. d ) (  
language: eng
source:
identifier: ISSN: 0043-1354 ; E-ISSN: 1879-2448 ; DOI: 10.1016/j.watres.2013.12.004
fulltext: fulltext
issn:
  • 0043-1354
  • 00431354
  • 1879-2448
  • 18792448
url: Link


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titleRoles of root porosity, radial oxygen loss, Fe plaque formation on nutrient removal and tolerance of wetland plants to domestic wastewater
creatorMei, Xiu-Qin ; Yang, Yang ; Tam, Nora Fung-Yee ; Wang, Ya-Wen ; Li, Li
ispartofWater Research, 01 March 2014, Vol.50, pp.147-159
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subjectRates of Rol ; Porosity ; Fe Plaque ; Domestic Wastewater Tolerance ; Nutrient Removal ; Rhizosphere ; N/P Accumulation ; Engineering
descriptionRoot properties including rates of radial oxygen loss (ROL), root porosity, and Fe plaque formation on the root surface, in six wetland plant species, namely , var. , , , , and , and their relationships with nutrient removal and tolerance to domestic wastewater were investigated. Results showed that different species had different root porosities (18–36%) and Fe plaque formation (1.76–5.3 mg Fe g root d.w.), which were significantly correlated with ROL (67–157 mmol O  kg root d.w. d ) (  < 0.001). The ROL rates were also positively correlated with plant tolerance to domestic wastewater (  < 0.001) and removal of total nitrogen (35–76%), total phosphate (22–62%), and chemical oxygen demand (58–86%). Among the six species, and had significantly higher ROL, greater Fe plaque formation, higher tolerance to domestic wastewater, and better removal of TN, TP, and COD. These two species also had greater influences on changes in redox potential, pH, dissolved oxygen, and the quotients of in rhizosphere soil solution, as well as greater N and P uptake in plant tissues, particularly belowground parts, than in the other species. For all plant species investigated, wastewater significantly decreased the rates of ROL and root porosity but induced greater Fe plaque formation. These results suggested that root properties are useful for selecting tolerant and efficient species in constructed wetland wastewater treatment facilities.
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