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Decision-making framework for the application of in-situ activated carbon amendment to sediment

Lookup NU author(s): Professor David WernerORCiD, Professor Richard Luthy

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Abstract

This study provides a decision-support framework and a design methodology for preliminary evaluation of field application of in-situ activated carbon (AC) amendment to sediment to control the (bio)availability of hydrophobic organic contaminants. The decision-making framework comprises four sequential steps: screening assessment, input parameter determination, model prediction, and evaluation for process optimization. The framework allows the application of state-of-the-art experimental and modeling techniques to assess the effectiveness of the treatment under different field conditions and is designed for application as a part of a feasibility study. Through a stepwise process it is possible to assess the effectiveness of in-situ AC amendment with a proper consideration of different site conditions and application scenarios possible in the field. The methodology incorporates the effect of various parameters on performance including: site-specific kinetic coefficients, varied AC dose and particle size, sediment and AC sorption parameters, and pore-water velocity. The modeling framework allows comparison of design alternatives for treatment optimization and estimation of long-term effectiveness over a period of 10-20 years under slow mass transfer in the field. (C) 2015 Elsevier B.V. All rights reserved.

Publication metadata

Author(s): Choi Y, Cho YM, Gala WR, Hoelen TP, Werner D, Luthy RG

Publication type: Article

Publication status: Published

Journal: Journal of Hazardous Materials

Year: 2016

Volume: 306

Pages: 184-192

Print publication date: 05/04/2016

Online publication date: 17/12/2015

Acceptance date: 14/12/2015

ISSN (print): 0304-3894

ISSN (electronic): 1873-3336

Publisher: Elsevier BV

URL: http://dx.doi.org/10.1016/j.jhazmat.2015.12.019

DOI: 10.1016/j.jhazmat.2015.12.019

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