Chemical Modeling of the TMA–CO2–H2O System: A Draw Solution in Forward Osmosis for Process Water Recovery
| Autor: | Amy M. Holland, Michael Carlos, Vladimiros G. Papangelakis, Timothy James Clark, Georgios Kolliopoulos, Ding-Yu Peng |
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| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
Chromatography business.industry Chemistry General Chemical Engineering Chemical process modeling Forward osmosis 02 engineering and technology General Chemistry Water recovery 010402 general chemistry 7. Clean energy 01 natural sciences 6. Clean water 0104 chemical sciences Membrane 020401 chemical engineering Scientific method Osmotic pressure 0204 chemical engineering Process engineering business Ternary operation |
| Zdroj: | Journal of Chemical & Engineering Data. 62:1214-1222 |
| ISSN: | 1520-5134 0021-9568 |
| DOI: | 10.1021/acs.jced.6b00780 |
| Popis: | Forward osmosis (FO) is an innovative membrane-based process that requires limited external energy input to recover water as it relies on the spontaneous osmotic pressure gradient between a process water stream and a more concentrated solution; the latter is termed a “draw solution”. A suitable draw solution should have properties that allow its solute to be separated into recoverable products that can, in turn, be used to regenerate the initial draw solution with minimum energy requirements. These properties are crucial for the economics of the FO process because the basic energy requirement in FO arises from the separation and regeneration of the draw solution. Recently, it was proposed that such a draw solution can be an aqueous carbonated trimethylamine solution (TMAH:HCO3). In this project, the properties, i.e., composition, pH, and vapor–liquid equilibria (VLE), of the binary TMA–H2O and the ternary TMA–CO2–H2O systems were studied to generate thermodynamic data required to enable accurate speciatio... |
| Databáze: | OpenAIRE |
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