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A mechanism for the occurrence of ions in distilled water / Ramesh Balakrishnan in Industrial & engineering chemistry research, Vol. 50 N° 23 (Décembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13202–13209 Titre : A mechanism for the occurrence of ions in distilled water Type de document : texte imprimé Auteurs : Ramesh Balakrishnan, Auteur ; Ravi Sankannavar, Auteur ; K. Kesava Rao, Auteur Année de publication : 2012 Article en page(s) : pp. 13202–13209 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Ions  water  Solar  distillation Résumé : Solar distillation can be used to produce potable water from contaminated water. However, studies show that ions such as F– and NO3– occur in distillates from solar stills. In order to understand the reasons for this behavior, imaging and distillation experiments were conducted. White dots were seen in the vapor space above the interface of hot water poured into containers. The concentrations of various ions such as F– and SO42– in the distillates from thermal and solar distillation experiments were roughly comparable when the feed consisted of deionized water and also solutions having fluoride concentrations of 100 and 10 000 mg/L. These observations suggest that aerosols enter the distillation setup through leaks and provide nuclei for the condensation of water vapor. The water-soluble component of aerosols dissolves in the drops formed, and some of the drops are transferred to the distillate by buoyancy-driven convection. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2002022 [article] A mechanism for the occurrence of ions in distilled water [texte imprimé] / Ramesh Balakrishnan, Auteur ; Ravi Sankannavar, Auteur ; K. Kesava Rao, Auteur . - 2012 . - pp. 13202–13209. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13202–13209 Mots-clés : Ions  water  Solar  distillation Résumé : Solar distillation can be used to produce potable water from contaminated water. However, studies show that ions such as F– and NO3– occur in distillates from solar stills. In order to understand the reasons for this behavior, imaging and distillation experiments were conducted. White dots were seen in the vapor space above the interface of hot water poured into containers. The concentrations of various ions such as F– and SO42– in the distillates from thermal and solar distillation experiments were roughly comparable when the feed consisted of deionized water and also solutions having fluoride concentrations of 100 and 10 000 mg/L. These observations suggest that aerosols enter the distillation setup through leaks and provide nuclei for the condensation of water vapor. The water-soluble component of aerosols dissolves in the drops formed, and some of the drops are transferred to the distillate by buoyancy-driven convection. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2002022