Optimized conditions for phytoremediation of diesel by Scirpus grossus in horizontal subsurface flow constructed wetlands (HSFCWs) using response surface methodology

Israa Abdul Wahab Al-Baldawi, Siti Rozaimah Sheikh Abdullah, Hassimi Abu Hasan, Fatihah Suja`, Nurina Anuar, Mushrifah Idris

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This study investigated the optimum conditions for total petroleum hydrocarbon (TPH) removal from diesel-contaminated water using phytoremediation treatment with Scirpus grossus. In addition, TPH removal from sand was adopted as a second response. The optimum conditions for maximum TPH removal were determined through a Box-Behnken Design. Three operational variables, i.e. diesel concentration (0.1, 0.175, 0.25% Vdiesel/Vwater), aeration rate (0, 1 and 2L/min) and retention time (14, 43 and 72 days), were investigated by setting TPH removal and diesel concentration as the maximum, retention time within the given range, and aeration rate as the minimum. The optimum conditions were found to be a diesel concentration of 0.25% (Vdiesel/Vwater), a retention time of 63 days and no aeration with an estimated maximum TPH removal from water and sand of 76.3 and 56.5%, respectively. From a validation test of the optimum conditions, it was found that the maximum TPH removal from contaminated water and sand was 72.5 and 59%, respectively, which was a 5 and 4.4% deviation from the values given by the Box-Behnken Design, providing evidence that S.grossus is a Malaysian native plant that can be used to remediate wastewater containing hydrocarbons.

Original languageEnglish
Pages (from-to)152-159
Number of pages8
JournalJournal of Environmental Management
Volume140
DOIs
Publication statusPublished - 1 Jul 2014

Fingerprint

Environmental Biodegradation
Wetlands
phytoremediation
petroleum hydrocarbon
subsurface flow
constructed wetland
Hydrocarbons
Petroleum
diesel
Crude oil
aeration
Sand
sand
Water
water
Waste Water
response surface methodology
removal
hydrocarbon
Wastewater

Keywords

  • Aeration
  • Box-Behnken design
  • Pilot scale constructed wetlands
  • TPH removal

ASJC Scopus subject areas

  • Environmental Engineering
  • Waste Management and Disposal
  • Management, Monitoring, Policy and Law
  • Medicine(all)

Cite this

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title = "Optimized conditions for phytoremediation of diesel by Scirpus grossus in horizontal subsurface flow constructed wetlands (HSFCWs) using response surface methodology",
abstract = "This study investigated the optimum conditions for total petroleum hydrocarbon (TPH) removal from diesel-contaminated water using phytoremediation treatment with Scirpus grossus. In addition, TPH removal from sand was adopted as a second response. The optimum conditions for maximum TPH removal were determined through a Box-Behnken Design. Three operational variables, i.e. diesel concentration (0.1, 0.175, 0.25{\%} Vdiesel/Vwater), aeration rate (0, 1 and 2L/min) and retention time (14, 43 and 72 days), were investigated by setting TPH removal and diesel concentration as the maximum, retention time within the given range, and aeration rate as the minimum. The optimum conditions were found to be a diesel concentration of 0.25{\%} (Vdiesel/Vwater), a retention time of 63 days and no aeration with an estimated maximum TPH removal from water and sand of 76.3 and 56.5{\%}, respectively. From a validation test of the optimum conditions, it was found that the maximum TPH removal from contaminated water and sand was 72.5 and 59{\%}, respectively, which was a 5 and 4.4{\%} deviation from the values given by the Box-Behnken Design, providing evidence that S.grossus is a Malaysian native plant that can be used to remediate wastewater containing hydrocarbons.",
keywords = "Aeration, Box-Behnken design, Pilot scale constructed wetlands, TPH removal",
author = "Al-Baldawi, {Israa Abdul Wahab} and {Sheikh Abdullah}, {Siti Rozaimah} and {Abu Hasan}, Hassimi and Fatihah Suja` and Nurina Anuar and Mushrifah Idris",
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T1 - Optimized conditions for phytoremediation of diesel by Scirpus grossus in horizontal subsurface flow constructed wetlands (HSFCWs) using response surface methodology

AU - Al-Baldawi, Israa Abdul Wahab

AU - Sheikh Abdullah, Siti Rozaimah

AU - Abu Hasan, Hassimi

AU - Suja`, Fatihah

AU - Anuar, Nurina

AU - Idris, Mushrifah

PY - 2014/7/1

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AB - This study investigated the optimum conditions for total petroleum hydrocarbon (TPH) removal from diesel-contaminated water using phytoremediation treatment with Scirpus grossus. In addition, TPH removal from sand was adopted as a second response. The optimum conditions for maximum TPH removal were determined through a Box-Behnken Design. Three operational variables, i.e. diesel concentration (0.1, 0.175, 0.25% Vdiesel/Vwater), aeration rate (0, 1 and 2L/min) and retention time (14, 43 and 72 days), were investigated by setting TPH removal and diesel concentration as the maximum, retention time within the given range, and aeration rate as the minimum. The optimum conditions were found to be a diesel concentration of 0.25% (Vdiesel/Vwater), a retention time of 63 days and no aeration with an estimated maximum TPH removal from water and sand of 76.3 and 56.5%, respectively. From a validation test of the optimum conditions, it was found that the maximum TPH removal from contaminated water and sand was 72.5 and 59%, respectively, which was a 5 and 4.4% deviation from the values given by the Box-Behnken Design, providing evidence that S.grossus is a Malaysian native plant that can be used to remediate wastewater containing hydrocarbons.

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