Study of Struvite Crystal Growth with The Addition of Tartaric Acid

The purpose of this study was to the growth struvite crystals from effect adding tartaric acid additives an aqueous solution containing Mg 2+ , NH4 + and PO4 3- with a molar ratio 1:1:1. results study, it found that more concentration additive added, got smaller rate constant was. By decreasing value rate, also decreased then became inhibited. On other hand, has potential be used as fertilizer. had significant on controlling production struvite. optimum crystal mass obtained at 20 ppm acid, temperature 40 o C stirrer rotation 300 rpm so can applied in manufacture industry