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https://hdl.handle.net/11499/8405| Title: | Effect of urea concentration on microbial Ca precipitation | Authors: | Işik, M. Altaş, L. Özcan, S. Şimşek, T. Agdag, Osman Nuri Alaş, A. |
Keywords: | Calcification Calcium Precipitation Urea Wastewater Anaerobic reactor Calcium concentration Calcium removal Carbonate precipitation Mixed cultures Synthetic waste water Urea hydrolysis Ureolytic Biomineralization Calcification (biochemistry) Calcium carbonate Carbon dioxide Metabolism Precipitation (chemical) Wastewater treatment |
Abstract: | High calcium concentrations are problematic, because they lead to clogging of pipelines, boilers and heat exchangers through scaling, or malfunctioning of aerobic and anaerobic reactors. Urea hydrolysis provides simultaneously a pH and CO 2 increase, both of which are responsible of CaCO 3 production. This study was carried out to determine urea concentrations between 5 and 20mM on ureolytic mixed culture treating synthetic wastewater. The optimum urea concentration was found as 15mM for effective calcium removal. This work showed the feasibility of urea-based microbial carbonate precipitation as an alternative Ca 2+ removal technology. © 2012 The Korean Society of Industrial and Engineering Chemistry. | URI: | https://hdl.handle.net/11499/8405 https://doi.org/10.1016/j.jiec.2012.05.002 |
ISSN: | 1226-086X |
| Appears in Collections: | Mühendislik Fakültesi Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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