Optimal design of adsorbents for NORM removal from produced water in natural gas fracking. Part 2: CAMD for adsorption of radium and barium

This is second paper in series in which we propose computer-aided molecular design (CAMD) methodology for the optimal design of adsorbents for adsorption of natural occurring radioactive material (NORM) of natural gas fracking waste. The adsorbent selection optimization problem is posed as a mixed i...

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Veröffentlicht in:Chemical engineering science Jg. 137; S. 977 - 985
Hauptverfasser: Benavides, Pahola T., Gebreslassie, Berhane H., Diwekar, Urmila M.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 01.12.2015
Schlagworte:
Computer-aided molecular design (CAMD)
Efficient ant colony optimization (EACO)
Natural gas
Natural occurring radioactive material (NORM)
Produce water
Produce water
Computer-aided molecular design (CAMD)
Efficient ant colony optimization (EACO)
Natural occurring radioactive material (NORM)
Natural gas
ISSN:0009-2509, 1873-4405
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Zusammenfassung:This is second paper in series in which we propose computer-aided molecular design (CAMD) methodology for the optimal design of adsorbents for adsorption of natural occurring radioactive material (NORM) of natural gas fracking waste. The adsorbent selection optimization problem is posed as a mixed integer nonlinear programming problem and a new algorithm called efficient ant colony optimization (EACO) is used to solve the problem. The algorithm maximizes the absorption capacity of the adsorbent subject to structural feasibility, thermodynamic property correlations, process conditions derived from produced water and mass balance on the adsorption process constraints. New adsorbents for removal of radium and barium together and individually are proposed. These adsorbents show far greater capacity to remove radium and barium from produced water than state of the art adsorbents found in literature. [Display omitted] •First study of computer aided molecular design for Adsorption.•Second paper in two part series.•A novel approach to the problem of NORM removal from produced waters of fracking.•New combinatorial optimization method to solve the problem.
ISSN:0009-2509
1873-4405
DOI:10.1016/j.ces.2015.06.019