SYNTHESIS OF STRUVITE USING A VERTICAL CANTED REACTOR WITH CONTINUOUS LAMINAR FLOW PROCESS

被引:0
|
作者
Sutiyono, S. [1 ]
Edahwati, L. [1 ]
Muryanto, S. [2 ,3 ]
Jamari, J.
Bayuseno, A. P.
机构
[1] Univ Pembangunan Nas Vet JawaTimur, Surabaya, Indonesia
[2] UNTAG Univ Semarang, Dept Chem Engn, Semarang, Indonesia
[3] Diponegoro Univ, Dept Mech Engn, Semarang, Indonesia
来源
2ND INTERNATIONAL JOINT CONFERENCE ON SCIENCE AND TECHNOLOGY (IJCST) 2017 | 2018年 / 953卷
关键词
WATER;
D O I
10.1088/1742-6596/953/1/012244
中图分类号
O59 [应用物理学];
学科分类号
摘要
Struvite is a white crystalline that is chemically known as magnesium ammonium phosphorus hexahydrate (MgNH4PO4 center dot 6H(2)O). It can easily dissolve in acidic conditions and slightly soluble in neutral and alkaline conditions. In industry, struvite forms as a scale deposit on a pipe with hot flow fluid. However, struvite can be used as fertilizer because of its phosphate content. A vertical canted reactor is a promising technology for recovering phosphate levels in wastewater through struvite crystallization. The study was carried out with the vertical canted reactor by mixing an equimolar stock solution of MgCl2, NH4OH, and H3PO4 in 1: 1: 1 ratio. The crystallization process worked with the flow rate of three stock solution entering the reactor in the range of 16-38 ml/min, the temperature in the reactor is worked on 20 degrees, 30 degrees, and 40 degrees C, while the incoming air rate is kept constant at 0.25 liters/min. Moreover, pH was maintained at a constant value of 9. The struvite crystallization process run until the steady state was reached. Then, the result of crystal precipitates was filtered and dried at standard temperature room for 48 hours. After that, struvite crystals were stored for the subsequent analysis by Scanning Electron Microscope (SEM) and XRD (X-Ray Diffraction) method. The use of canted reactor provided the high pure struvite with a prismatic crystal morphology.
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页数:5
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