Synthesis of Struvite using a Vertical Canted Reactor with Continuous Laminar Flow Process

Sutiyono, S.; Edahwati, Luluk; Muryanto, S.; Jamari, J.; Bayuseno, A.P.

doi:10.1088/1742-6596/953/1/012244

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…Untuk sistem densitas konstan, maka waktu rata-rata sama dengan waktu tinggal, seperti ditunjukkan pada persamaan berikut ini [8]: (5) Studi pengaruh laju alir pada pembentukan struvite telah dilakukan sebelumnya. Laju alir umpan 16-38 mL/menit menghasilkan perolehan fosfat hingga 37,19% [10]. Pengaturan laju alir umpan dalam range 15-40 mL/menit menghasilkan konversi struvite sebesar 0,007767-0,01889% [11].…”

Section: Hubungan Laju Alir Dan Waktu Tinggalunclassified

Reaction Kinetics of Ammonium Removal from Cow Urine by Struvite Formation Using a Baffle Column Reactor

Anggriawan

Alvira

Edahwati

2021

CHEMICA: Jurnal Teknik Kimia

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Section: Hubungan Laju Alir Dan Waktu Tinggalunclassified

Reaction Kinetics of Ammonium Removal from Cow Urine by Struvite Formation Using a Baffle Column Reactor

Anggriawan

Alvira

Edahwati

2021

CHEMICA: Jurnal Teknik Kimia

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“…It is shown that the higher the temperature, the phosphate conversion also decreases. Struvite crystal have different behaviour at high temperatures with excess water when struvite crystals are heated at high temperatures (<100°C) with excess water for 24 hours, ammonia will disappear gradually, and will become bobierrite [4].…”

Section: The Effect Of Temperature On Percent Phosphate Conversionmentioning

confidence: 99%

“…Scanning Electron Microscope (SEM) in an electron microscope that draws the surface of the specimen by scanning using high-energy electron rays in scans and raster patterns that attains the sizes detail less than 1 nm [4]. The characteristics of struvite crystals were observed using SEM with optimum conditions selected at pH 8 and a temperature of 30°C shown in the figure 4.…”

Section: Characteristics Of Struvite Crystal Productsmentioning

confidence: 99%

“…The XRD measurements result in a graph of diffraction pattern. In addition, there are also diffraction angle values (2 theta), the distance between lattice values and relative intensities of diffraction peaks in percent [4]. XRD analysis was used to determine that the struvite obtained was crystal by showing the peak pattern in the XRD result.…”

Section: Characteristics Of Struvite Crystal Productsmentioning

confidence: 99%

“…Struvite fertilizer can release minerals needed by plants, so struvite fertilizer becomes more durable. Struvite can be used as a slow release fertilizer with a high level of use, without the danger of damaging plant roots [4]. The process of forming struvite can be divided into two stages, namely nucleation and growth.…”

Section: Introductionmentioning

confidence: 99%

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Tofu Factory Liquid Waste for Making Struvite with Canted Vertical Reactors

Sutiyono

Edahwati

Pratiwi

et al. 2020

IJEISE

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Struvite is a white crystal, chemically known as magnesium ammonium phosphate hexahydrate (MgNH4PO4.6H2O). Tofu factory liquid waste is waste that can be reused because of its content. Tofu factory liquid waste can potentially pollute the environment. This research aimsto analyze the manufacture of struvite by utilizing the phosphate content contained in the liquid waste of tofu factories using vertical canted column reactors which can reduce environmental pollution due to liquid waste of tofu factories. This study uses a vertical canted column reactors by mixing anequimolar 1: 1: 1 MgCl2: NH4OH: H3PO4 solution. Struvite crystallization process operates at a temperature variation of 30°C,35°C,40°C,45.50°Cand a pH of 8, 9,10,11,12 by maintaining the air rate of 0.5 liters minute-1 and a MAP (Magnesium Ammonium Phosphate)flow of 56 ml minutes-1 as a whole. The crystallization process runs until a steady state conditionis reached. Then, the struvite crystals obtained were filtered and dried at room temperature for 24 hours. After that struvite crystals were analyzed using XRF, XRD, and SEM. The results of the study obtained the best phosphate conversion of 24.935% at 30°C and pH 8.

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Mini Factory Laboratory From Technology Reverse Engineering Ballet Reactors in Struvite Formation

Edahwati¹,

Sutiyono²,

Lestari³

et al. 2021

BIOMEJ

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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.

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Synthesis of Struvite using a Vertical Canted Reactor with Continuous Laminar Flow Process

Cited by 3 publications

References 4 publications

Reaction Kinetics of Ammonium Removal from Cow Urine by Struvite Formation Using a Baffle Column Reactor

Reaction Kinetics of Ammonium Removal from Cow Urine by Struvite Formation Using a Baffle Column Reactor

Tofu Factory Liquid Waste for Making Struvite with Canted Vertical Reactors

Mini Factory Laboratory From Technology Reverse Engineering Ballet Reactors in Struvite Formation

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