Print version ISSN 1516-1439
FOLETTO, Edson Luiz et al. Production of struvite from beverage waste as phosphorus source. Mat. Res. [online]. 2013, vol.16, n.1, pp. 242-245. Epub Nov 13, 2012. ISSN 1516-1439. http://dx.doi.org/10.1590/S1516-14392012005000152.
In this work was investigated the influence of pH on the synthesis of struvite using cola beverage waste as source of phosphorus. The process was operated in a batch reactor. The reaction time was 20 minutes, and the chemicals MgCl2.6H2O and NH4Cl were used in the experiment, with a molar ratio of Mg+2:NH4+:PO43- = 1:1:1. The products were characterized by X-ray diffraction (XRD), atomic force microscopy (AFM), surface area (BET), thermogravimetric analysis (TGA) and infra-red (IR). From the results was verified the formation of a crystalline phase at pH 9.5, with a surface area of 6.59 m2 g-1 and a particle size of about 0.25 µm.
Keywords : struvite; characterization; beverage waste; phosphorous.