Performance of membrane bioreactor (MBR) systems for the treatment of shipboard slops: Assessment of hydrocarbon biodegradation and biomass activity under salinity variation

Bella, Gaetano Di; Prima, N. Di; Trapani, Daniele Di; Freni, Gabriele; Giustra, Maria Gabriella; Torregrossa, Michele; Viviani, Gaspare

doi:10.1016/j.jhazmat.2015.08.021

Cited by 58 publications

(31 citation statements)

References 58 publications

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“…In order to assess the influence of the sediment salinity on the sediment ability to increase the temperature when irradiated, several sediment samples with a gradual increase in pore water salinity values (from 0 to 10% and different from the initial natural value of 4.3%) were obtained. The procedure included a preliminary sediment washing with deionised water for a complete salinity removal, followed by a different NaCl dosage to the system [41].…”

Section: Sediment Sampling and Characterizationmentioning

confidence: 99%

Remediation of Hg-contaminated marine sediments by simultaneous application of enhancing agents and microwave heating (MWH)

Falciglia

Malarbì

Maddalena

et al. 2017

Chemical Engineering Journal

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This version is available at https://strathprints.strath.ac.uk/60331/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. AbstractThe aim of this work was to investigate Hg removal ability of a novel microwave heating (MWH) treatment for marine sediment remediation enhanced by the application of several agents, biodegradable complexing agent (methylglycinediacetic acid, MGDA), surfactant (Tween ® 80), and citric acid. Main results revealed that MWH allowed a very rapid heating (~450 °C in 7 min) of the irradiated medium. However, without the addition of enhancing agents, a maximum Hg removal of ~72% can be achieved. The application of MGDA led to a higher contaminant removal of ~87% (residual concentration = 5.4 mg kg -1 ). For the treatment including the simultaneous addition of both chelating agent and surfactant, their synergetic action and stripping processes resulted in a very high Hg removal of ~99% for an irradiation time of 7 min, corresponding to a residual concentration of 0.56 mg kg -1 , which is lower than the Italian regulatory limit of 1 mg kg -1 . The use of citric acid resulted in a shortening of the removal kinetics, which allowed the successful application of a shorter remediation time of 5 min. The observed strong passive ability of sediments to convert a microwave irradiation energy into a rapid and large temperature increase undoubtedly represents a key factor in the whole remediation process, making the studied treatment an excellent choice. Kinetic data are suitable for a preliminarily assessment of the effectiveness of clean-up activities, and as basis for future scaling-up studies on MWH of Hgcontaminated sediments.

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Section: Sediment Sampling and Characterizationmentioning

confidence: 99%

Remediation of Hg-contaminated marine sediments by simultaneous application of enhancing agents and microwave heating (MWH)

Falciglia

Malarbì

Maddalena

et al. 2017

Chemical Engineering Journal

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“…The fouling resistance R F can also be expressed as the sum of an irreversible resistance (R irr ), related to the pore blocking and cake deposition not removable by ordinary backwashing and a reversible contribution (R rev ), the latter consisting in the fouling amount removable through ordinary backwashing (Eq. (3)) (Di Bella et al, 2015).…”

Section: Membrane Fouling Assessmentsmentioning

confidence: 99%

Greenhouse gas emissions and the links to plant performance in a fixed-film activated sludge membrane bioreactor – Pilot plant experimental evidence

Mannina

Capodici

Cosenza

et al. 2017

Bioresource Technology

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“…Moreover, between the operations of fill and draw of crude oil from and into the oil tankers, the hulls are washed with seawater in order to remove a higher portion of hydrocarbons from the walls of the tanker. This activity produces a specific shipboard industrial wastewater named "slop", which is mainly characterized by high salinity and hydrocarbons concentration [5][6][7] . Due to its polluting characteristics, slops cannot be directly discharged to the sea.…”

Section: Introductionmentioning

confidence: 99%

“…Even though several studies have been carried out about produced water treatment [1,2,[8][9][10][11][12][13][14][15][16][17], shipboard slops wastewater treatment is a topic worthy of further investigation also in light of the lack of information and research articles regarding their treatment [5][6][7]. Among the difficulties relating to the treatment of such wastewater, the characterization is a first obstacle related to the proper nature of wastewater, rich in floating oils and emulsified phases [5], which hinds the repeatability and the reproducibility of analytical methods.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Treatment Proposals of Shipboard Slop Wastewater Contaminated by Hydrocarbons

Campo

Giustra

Marchis

et al. 2017

Water

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Shipboard slop wastewaters are produced by the activity of washing of oil tankers with seawater, and are characterized by high salinity and hydrocarbons. In this context, harbor authorities are forced to respect the international regulation IMO-MARPOL 73/78 and they must treat slop wastewater before discharging to the sea. This study compared data from three stand-alone treatments working with the same real slop wastewater: (1) a chemical treatment of coagulation-flocculation with aluminum sulphate as coagulant and an anionic flocculant (A57), (2) a physical treatment of adsorption on granular activated carbon (GAC), (3) two biological treatments represented by a membrane bioreactor (MBR) and a moving bed biofilm reactor (MB-MBR). GAC treatment registered the highest removal efficiency of total petroleum hydrocarbons (ηTPH) next to 85%, since the activated carbon had excellent adsorption properties towards organic substances. The coagulation-flocculation treatment reported the lowest ηTPH ≈ 57% due to the presence of emulsified hydrocarbons that were not affected by the coagulant and flocculant action, so remaining in liquid phase. ηTPH ≈ 70% obtained with MB-MBR fed with 100% volume of slop, suggested biomass acclimation to salinity and hydrocarbons. Based on the results of each process, three main treatment chains are proposed depending on the hydrocarbons load of the real slop wastewater.

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Performance of membrane bioreactor (MBR) systems for the treatment of shipboard slops: Assessment of hydrocarbon biodegradation and biomass activity under salinity variation

Cited by 58 publications

References 58 publications

Remediation of Hg-contaminated marine sediments by simultaneous application of enhancing agents and microwave heating (MWH)

Remediation of Hg-contaminated marine sediments by simultaneous application of enhancing agents and microwave heating (MWH)

Greenhouse gas emissions and the links to plant performance in a fixed-film activated sludge membrane bioreactor – Pilot plant experimental evidence

Characterization and Treatment Proposals of Shipboard Slop Wastewater Contaminated by Hydrocarbons

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