Please use this identifier to cite or link to this item: http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/2861
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dc.contributor.authorMohsenzadeh, A.
dc.contributor.authorAflaki, E.
dc.contributor.authorGowthaman, S.
dc.contributor.authorNakashima, K.
dc.contributor.authorKawasaki, S.
dc.contributor.authorEbadi, T.
dc.date.accessioned2021-05-18T09:08:23Z
dc.date.accessioned2022-06-28T10:19:57Z-
dc.date.available2021-05-18T09:08:23Z
dc.date.available2022-06-28T10:19:57Z-
dc.date.issued2020
dc.identifier.citationMohsenzadeh, A., Aflaki, E., Gowthaman, S. et al. A two-stage treatment process for the management of produced ammonium by-products in ureolytic bio-cementation process. Int. J. Environ. Sci. Technol. (2021). https://doi.org/10.1007/s13762-021-03138-z.en_US
dc.identifier.urihttp://repo.lib.jfn.ac.lk/ujrr/handle/123456789/2861-
dc.description.abstractSince the last decade, microbial-induced carbonate precipitation has been proposed as an environmentally friendly technique to improve the engineering properties of soil. Despite the considerable progress on ureolytic bio-cementation, one of the major concerns that has not been solved yet is related to the production of ammonium. This study aimed to manage ammonium ions to attain a sustainable pathway for bio-cementation treatment. To this end, a two-stage treatment including rinsing of ammonium from soil combined with a recovery of ammonium was considered herein for the first time. In the rinsing process, the followings were studied to optimize ammonium removal from soil: the effects of pH, concentration, and the single salts of the rinse solution. In the subsequent ammonium recovery process, the effects of phosphate source, pH, molar ratio, and Ca2+ ions were extensively investigated. The results revealed that at neutral pH conditions, ammonium removal was the lowest (68.82%). The MgCl2 solution was found to have the greatest ability to remove ammonium followed by CaCl2, NaCl, and distilled water (98.54%, 96.47%, 89.95%, and 74.77%, respectively). The ammonium recovery results showed that 86.8% of ammonium ions could be recovered as a high purity struvite (~ 94%), and that the optimum recovery was achieved at the following conditions: Na2HPO4 as a phosphate source, the Mg2+: NH4+: PO43− molar ratio of 1.2: 1: 1, and a pH of 8.5. Overall, it was demonstrated that the proposed method could be an effective way for sustainable ammonium by-products management.en_US
dc.language.isoenen_US
dc.publisherSpringer Nature.en_US
dc.subjectAmmonium by-products.en_US
dc.subjectDesorption.en_US
dc.subjectEnvironmental management.en_US
dc.subjectMicrobial induced carbonate precipitation.en_US
dc.subjectRecovery.en_US
dc.titleA two stage treatment process for the management of produced ammonium by products in ureolytic bio cementation process.en_US
dc.typeArticleen_US
Appears in Collections:Interdisciplinary Studies FoT

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