Seasonal variability in benzene removal by vertical-flow constructed wetland filters

Xianqiang Tang, Paul Emeka Eke, Miklas Scholz, Suiliang Huang

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

A long-term study (April 2005 to June 2007) was conducted to assess the seasonal variability in benzene removal by experimental vertical-flow constructed wetlands planted with Phragmites australis (common reeds). The benzene removal efficiency was constant and high (90-100%) during the first year of operation. However, seasonal variability in benzene removal was apparent after January 2006. The highest and lowest benzene removal efficiencies occurred in March and December, respectively. Approximately 8 g (added to the influent every second week) of the slow-releasing N-P-K Miracle-Gro fertiliser was sufficient to treat 1,000 mg/l benzene. Results based on linear regressions indicated that the seasonal benzene removal efficiency was negatively correlated and closely linked to the seasonal effluent dissolved oxygen and NO 3-N concentrations, whilst positively correlated and closely linked to the seasonal effluent pH and redox values. Temperature and effluent NH 4-N and PO4 3-P concentrations were weakly linked to seasonal benzene removal efficiencies.

Original languageEnglish
Pages (from-to)259-272
Number of pages14
JournalWater, Air, and Soil Pollution
Volume202
Issue number1-4
DOIs
Publication statusPublished - Sept 2009
Externally publishedYes

Keywords

  • Dissolved oxygen
  • Hydrocarbon
  • Nutrients
  • Seasonal variability
  • Temperature
  • Vertical flow constructed wetland

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modeling
  • Water Science and Technology
  • Pollution

Fingerprint

Dive into the research topics of 'Seasonal variability in benzene removal by vertical-flow constructed wetland filters'. Together they form a unique fingerprint.

Cite this