Near-quantitative Removal of Oxalate and Terephthalate from Water by Precipitation with a Rigid Bis-amidinium Compound DOI Creative Commons
Rosemary J. Goodwin, Phonlakrit Muang‐Non,

Nikki A. Tzioumis

et al.

Published: June 18, 2024

A simple, readily-prepared precipitant (1.Cl2) precipitates oxalate or terephthalate from water with very high efficacy, removing these anions at sub-millimolar concentrations using only one equivalent of precipitant. simple aqueous base/acid cycle can be used to regenerate 1.Cl2 after use. The resulting precipitates, 1.oxalate and 1.terephthalate, are anhydrous closely-packed, each anion receiving eight charge-assisted hydrogen bonds amidinium N–H donors. Precipitation occurs much lower than other dicarboxylates, direct competition experiments the biologically/environmentally relevant divalent CO32–, HPO42– SO42– reveal selectivity for over competitors.

Language: Английский

Near-quantitative Removal of Oxalate and Terephthalate from Water by Precipitation with a Rigid Bis-amidinium Compound DOI Creative Commons
Rosemary J. Goodwin, Phonlakrit Muang‐Non,

Nikki A. Tzioumis

et al.

Published: June 18, 2024

A simple, readily-prepared precipitant (1.Cl2) precipitates oxalate or terephthalate from water with very high efficacy, removing these anions at sub-millimolar concentrations using only one equivalent of precipitant. simple aqueous base/acid cycle can be used to regenerate 1.Cl2 after use. The resulting precipitates, 1.oxalate and 1.terephthalate, are anhydrous closely-packed, each anion receiving eight charge-assisted hydrogen bonds amidinium N–H donors. Precipitation occurs much lower than other dicarboxylates, direct competition experiments the biologically/environmentally relevant divalent CO32–, HPO42– SO42– reveal selectivity for over competitors.

Language: Английский

Citations

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