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S Sutiyono
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Mini Factory Laboratory From Technology Reverse Engineering Ballet Reactors in Struvite Formation L Edahwati; S Sutiyono; W D Lestari; R D Issafira; W Saputro; A K Faizin; N Adyono; T P Sari
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 1 No. 2 (2021): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Reverse Engineering (RE) can be interpreted as procedures and processes in dismantling an object to find out the materials, working methods, or technology used so that the object can function properly. Design activities using the reverse engineering concept make it easier for students to understand product specifications, product advantages and disadvantages, product production processes and production cost estimates before designing new products. The laboratory is one place that can be used to carry out the reverse engineering process. The bulkhead reactor is an alternative to the stirred tank reactor with the aim that the resulting product is maximized both in terms of quantity and morphology or shape of the material. The benefit of disassembling this product is as a first step in understanding the concept of reverse engineering in the task of designing machines or tools. From the results of the study, it was found that the formation of struvite occurred at pH 9 using an air flow rate of 1 l/minute.
Analysis of Air Flow Rate in Bulkhead Reactors on Struvite Mineral Luluk Edahwati; S Sutiyono; Suprihatin
BIOMEJ Vol. 2 No. 1 (2022): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Struvite is a white crystalline chemical known as magnesium ammonium phosphorus hexahydrate (MgNH4PO4.6H2O). Struvite is soluble in acidic conditions and slightly soluble in neutral and alkaline conditions. In industry, struvite is known as scale in pipes. Urinary stones can be called struvite because struvite crystals can form easily in the urine of animals and humans infected with ammonia organisms produced in the urine. Struvite can potentially be formed by alkaline urine and high magnesium excretion due to a high magnesium plant- based diet. The formation of struvite minerals is carried out in an insulated reactor by mixing a solution of MgCl2, NH4OH, and H3PO4 in a ratio of 1:1:1. The treatment of struvite mineral formation was carried out with a feed inlet rate of 35 ml/minute, the temperature at the reactor was carried out at 30oC while the intake air rate was carried out in the range of 0.25-1.25 liters/min. The pH of the solution was kept at a value of 9. The process was carried out until a steady state was reached.  The formation of struvite minerals using an insulated column reactor was obtained at conditions of pH 9, operating temperature of 30oC and air rate of 1.25L/min.
Co-Authors A K Faizin L Edahwati Luluk edahwati N Adyono R D Issafira Suprihatin T P Sari W D Lestari W Saputro