ELECTROCHEMICAL REMEDIATION OF POLLUTEDELECTROCHEMICAL REMEDIATION OF POLLUTED

Kristine B. Pedersen, Tore Lejon, Pernille E. Jensen, Lisbeth M. OttosenKristine B. Pedersen, Tore Lejon, Pernille E. Jensen, Lisbeth M. Ottosen

Department of Chemistry, University of Tromsø and Arctic Technology

Background National Action Plan• A national action plan for cleaning

adopted by the Norwegian Parliament in 2006 (St.meld. 14).

Environmental Focus

adopted by the Norwegian Parliament in 2006 (St.meld. 14).

• The action plan indicates that

undertaken when polluted sediments pose a

for human health or the environmentEnvironmental Focus• Increasing industrial activities in the High North (off-shore and on-

shore)

• Increasing international focus on the impact of human activities on

for human health or the environment

• The action plan is managed by

• KLIF has identified 17 harbours

actions, 4 of these situated in Northern Norway• Increasing international focus on the impact of human activities on

the Arctic environment, e.g. ‘Resolution on sustainable EU policy

for the High North’ (INI/2009/2214)

• Increasing need for developing and improving environmental

management of industrial waste, including polluted sedimentsmanagement of industrial waste, including polluted sediments

IncreasingIncreasingremediationharbour sediments in

the Arcticthe Arctic

Project objectivesProject objectives

• Develop and strengthen knowledge within on-site remediation technologies

Electrochemical

• Applies low currentsite remediation technologies

• Develop and optimise electrochemical

• Applies low current

construction material,

• Adaptable to Arctic • Develop and optimise electrochemical

remediation method(s) of multi-pollutedmaterial in the High North

• Adaptable to Arctic

• Potential for both

• Develop mobile remediation test unit for on-site use in the High North

• Commercially comparable

Remedial Test Strategy

POLLUTED

SEDIMENTS

Remedial Test Strategy

DESIGN AND DESIGN AND

OPTIMISATION

Statistical analyses

Statistical modellingStatistical modelling

Figure 2: Electrochemical stack

for pilot scale testingfor pilot scale testing

CLEAN CLEAN

SEDIMENTS

Mobile remediation test unit• Trailer with electrochemical remediation test unit(s) with the possibility of adding• Trailer with electrochemical remediation test unit(s) with the possibility of adding

remediation test units in the future

• To be used in the project for full scale remediation testing• To be used in the project for full scale remediation testing

• Future use: provide a mobile solution for undertaking different remedial tests laying

the foundation for designing site specific and cost-efficient remediation solutions

• Renewable energy sources produce electricity for the test unit

POLLUTED HARBOUR SEDIMENTS IN THE ARCTICPOLLUTED HARBOUR SEDIMENTS IN THE ARCTIC

, Pernille E. Jensen, Lisbeth M. Ottosen, Pernille E. Jensen, Lisbeth M. Ottosen

Technology Centre, Technical University of Denmark

cleaning polluted seabed was

Norwegian Parliament in 2006 (St.meld. 14).Norwegian Parliament in 2006 (St.meld. 14).

that remedial actions should be

sediments pose a hazardous risk

environmentRemedial Actions of polluted harbour sediments

environment

by the Norwegian EPA, KLIF

harbours for immediate remedial

in Northern Norway

Remedial Actions of polluted harbour sediments• Currently a limited number of remediation methods in the

Arctic are used/exist:

• Dredging and subsequent disposal• Dredging and subsequent disposal

• Dredging and subsequent stabilisation

• Need for developing site appropriate and cost-efficient

remediation methods for cleaning polluted Arctic harbours

Increasing need for Increasing need for remediation of polluted

sediments in ArcticArctic

Electrochemical remediation

current technology to mobilise and remove pollutants from soil, sediments, current technology to mobilise and remove pollutants from soil, sediments,

material, wood, fly ash, sewage water

to Arctic challenges in the High North, such as climate, infrastructure and logisticsto Arctic challenges in the High North, such as climate, infrastructure and logistics

both in-situ and ex-situ use

comparable to existing remediation methods of polluted sediments

Pollutants

Heavy metals

Oil productsOil products

PAH

PCB

TBTTBT

REMEDIAL TESTS

Variables:Figure 1: Sampled sediment sites for subsequent

electrochemical testingVariables:

pH, temperature, current,

pollutant concentration,

additives (chemicals/

electrochemical testing

Collaboration partnersadditives (chemicals/

biological material)

Collaboration partners

• Department of Chemistry,

University of Tromsø, Norway

• ARTEK, Technical University of

Denmark

FinancingThe project is part of the programme

EWMA (Environmental Industrial Waste

Management in the High North) at theManagement in the High North) at the

University of Tromsø financed by the

Norwegian Research Council and ENI

Norway AS

Kristine Bondo Pedersen, kristine.b.pedersen@uit.no

Contacts

Norway AS

Kristine Bondo Pedersen, kristine.b.pedersen@uit.no

Department of Chemistry, UiT

Supervisors:Supervisors:

Prof. Tore Lejon, Department of Chemistry, UiT

Senior Researcher Pernille Erland Jensen, ARTEK, DTU

Prof. Lisbeth M. Ottosen, BYG, DTU

laying

Prof. Lisbeth M. Ottosen, BYG, DTU