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Waste bones ash as an alternative source of P for struvite precipitation

Darwish, M. and Aris, A. and Puteh, M. H. and Jusoh, M. N. H. and Abdul Kadir, A. (2017) Waste bones ash as an alternative source of P for struvite precipitation. Journal of Environmental Management, 203 . pp. 861-866. ISSN 0301-4797

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Official URL: http://dx.doi.org/10.1016/j.jenvman.2016.02.033

Abstract

Struvite precipitation has been widely applied for the removal of ammonium-nitrogen (NH4–N) from wastewater. Due to the high cost of phosphorus (P) reagents, the current research trend was directed to find alternative sources of P, in order to maintain a sustainable NH4–N removal process. The current study investigated waste bones ashes as alternative sources of P. Different types of bones' ashes were characterized, in which the ash produced from waste fish bones was the highest in P content (17%wt.). The optimization of the factors affecting P extraction from ash by acidic leaching showed that applying 2M H2SO4 and 1.25 kg H2SO4/kg ash achieved the highest P recovery (95%). Thereafter, the recovered P was successfully used in struvite precipitation, which achieved more than 90% NH4–N removal and high purity struvite.

Item Type:Article
Uncontrolled Keywords:acidic leaching, phosphorus, struvite
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:81104
Deposited By: Narimah Nawil
Deposited On:24 Jul 2019 03:09
Last Modified:24 Jul 2019 03:09

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