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Start Over Author "W. Shane Walker" Journal industrial & engineering chemistry research
2 results on '"W. Shane Walker"'

1. Hypochlorite Resistant Graphene Oxide Incorporated Ultrafiltration Membranes with High Sustainable Flux

Author

Eva M. Deemer, Oluwaseye M. Owoseni, Tallen Capt, Tahmina Akter, and W. Shane Walker

Subjects
chemistry.chemical_classification, Polyvinylpyrrolidone, General Chemical Engineering, technology, industry, and agriculture, Oxide, Ultrafiltration, Hypochlorite, Ether, macromolecular substances, General Chemistry, Polymer, Industrial and Manufacturing Engineering, body regions, chemistry.chemical_compound, Membrane, chemistry, Chemical engineering, medicine, Copolymer, human activities, medicine.drug
Abstract

Poly(ether sulfone) (PES) is commonly used polymer in ultrafiltration (UF) membranes which, due to its hydrophobic nature, frequently incorporates the copolymer, polyvinylpyrrolidone (PVP), to impr...

Published
2019
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2. Improving Desalination Recovery Using Zero Discharge Desalination (ZDD): A Process Model for Evaluating Technical Feasibility

Author

W. Shane Walker, Thomas A. Davis, and Malynda A. Cappelle

Subjects
Desalter, Brackish water, General Chemical Engineering, Environmental engineering, 02 engineering and technology, General Chemistry, Electrodialysis, 021001 nanoscience & nanotechnology, Total dissolved solids, Desalination, Industrial and Manufacturing Engineering, 020401 chemical engineering, Scientific method, Environmental science, Nanofiltration, 0204 chemical engineering, 0210 nano-technology, Reverse osmosis
Abstract

Zero Discharge Desalination (ZDD) is a very-high-recovery hybrid desalination system, typically comprised of a primary desalter (such as reverse osmosis (RO) or nanofiltration (NF)) and electrodialysis metathesis (EDM). The EDM acts as a “kidney” by removing troublesome salts from the concentrate of the primary desalter, which allows for additional recovery of potable water. A mathematical model was developed to simulate ZDD system performance using mass balance, desalination design equations, and experimental data. Model results confirm that ZDD can achieve >97% system recovery for brackish water with (a) a feed total dissolved solids (TDS) concentration of 60% of the TDS); and (c) a silica content of

Published
2017
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