Optimization of Struvite Crystallization and Heavy Metal Recovery in Wastewater Using Response Surface Methodology

Perwitasari, D.S. and Muryanto, S. and Jamari, J. and Bayuseno, A.P. (2018) Optimization of Struvite Crystallization and Heavy Metal Recovery in Wastewater Using Response Surface Methodology. Oriental Journal of Chemistry, 34 (1). pp. 336-345. ISSN ISSN : 0970 - 020X, ONLINE ISSN : 2231-5039

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Official URL: http://www.orientjchem.org/download/43675

Abstract

In this study, the recovery of heavy metal (Cu2+, Pb2+, and Zn2+) concentrations and the yield of struvite from MAP precipitation in the wastewater were optimized by SRM (surface response methodology). Struvite was a major mineral precipitated with an impurity of sylvite (KCl) as confirmed by the XRPD Rietveld method, and struvite crystal has a prism-like shape morphology according to the SEM/EDX analysis. The SRM estimates that the concentration of Pb2+ has a significant effect of retarding the yield of the struvite mass, while insignificant effects were related to the Cu2+ and Zn2+ concentration. The optimum yield of struvite was reached at 8.342 mg, of which 59.4564 ppm of Cu2+ 70.7930 ppm of Pb2+ and 77.2114 ppm of Zn2+ could be recovered from wastewater. These optimized conditions could be valuable input data for engineering-design software in an equipment of the effluent treatment plant.

Item Type:Article
Uncontrolled Keywords:MAP precipitation, Struvite, Surface response methodology (SRM), Heavy metals, Wastewater treatment
Subjects:T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology
Divisions:Faculty of Engineering > Department of Mechanical Engineering
Faculty of Engineering > Department of Mechanical Engineering
ID Code:71634
Deposited By:Mr. Sugeng Priyanto
Deposited On:15 Apr 2019 16:44
Last Modified:24 Aug 2019 13:55

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