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BIBLIOGRAPHY   Aries,  R.S.,  and  Newton,  R.D.,  1955  “Chemical  Engineering  Cost  Estimation”,  Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 45,000 ton/year.

BIBLIOGRAPHY Aries, R.S., and Newton, R.D., 1955 “Chemical Engineering Cost Estimation”, Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 45,000 ton/year.

85 DESIGNING PRECIPITATED SILICA PLANT FROM SULFURIC ACID AND SODIUM SILICATE WITH CAPACITY OF 45,000 TON/YEARS Linda Fatmawati D500112005 Universitas Muhammadiyah of Surakarta S[r]

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PRELIMINARY DESIGN OF PRECIPITATED SILICA PLANT FROM SULPHURIC ACID AND SODIUM SILICATE   Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 45,000 ton/year.

PRELIMINARY DESIGN OF PRECIPITATED SILICA PLANT FROM SULPHURIC ACID AND SODIUM SILICATE Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 45,000 ton/year.

Sodium silicate with a concentration of 35% is stored in storage tanks (T-01) at a pressure of 1 atm and a temperature of 30˚C and then it is pumped (P-03) to Reactor (R- 01) and Reactor (R-02), which serves for reacting sodium silicate with sulfuric acid to form a compound of precipitated silica and sodium sulphate.

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INTRODUCTION  Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 45,000 ton/year.

INTRODUCTION Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 45,000 ton/year.

The raw materials used are sulfuric acid and sodium silicate. Sodium silicate obtained from PT Mahkota Indonesia in Pulogadung North Jakarta, which is 54.3 km from Ciampel, Karawang. Sulfuric acid can be from PT. Timur Raya Tunggal in Klari, Karawang, which is 17.1 km from Ciampel. b. Transportation

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INTRODUCTION  Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 40,000 ton/years.

INTRODUCTION Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 40,000 ton/years.

The raw materials of precipitated silica are sulphuric acid and sodium silicate. Sulphuric acid raw material is obtained from PT. Timur Raya Tunggal in Karawang, West Java with a capacity of 49,500 tons / year (www.timurraya..com). Sodium silicate is obtained from PT. Mahkota Indonesia is located in Pulogadung, North Jakarta , with a capacity of 30,000 tons / year (PT. Mahkota Indonesia, 2008).

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PRELIMINARY DESIGN OF PRECIPITATED SILICA PLANT FROM SULPHURIC ACID AND SODIUM SILICATE   Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 40,000 ton/years.

PRELIMINARY DESIGN OF PRECIPITATED SILICA PLANT FROM SULPHURIC ACID AND SODIUM SILICATE Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 40,000 ton/years.

The raw materials of precipitated silica are sulphuric acid and sodium silicate. Sulphuric acid raw material is obtained from PT. Timur Raya Tunggal in Karawang, West Java with a capacity of 49,500 tons / year (www.timurraya..com). Sodium silicate is obtained from PT. Mahkota Indonesia is located in Pulogadung, North Jakarta , with a capacity of 30,000 tons / year (PT. Mahkota Indonesia, 2008).

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SYNTHESIZE SILICA PARTICLES FROM SODIUM SILICATE IN THE ANODE AREA OF ELECTROCHEMICAL CELL

SYNTHESIZE SILICA PARTICLES FROM SODIUM SILICATE IN THE ANODE AREA OF ELECTROCHEMICAL CELL

This study was purposed to synthesize silica from water glass using electrochemical method and discover the characteristics of the silica particles produced. The study consist of three stages; synthesis of silica, drying, and characterization of the product. Water glass/sodium silica (solution) put into the vessel that had been made into two parts (anode area and cathode area) where the membrane cation as the divider of those two parts. The anode area filled by sodium silica as much as 1125 ml while in the cathode area filled by aquadest with the same volume. Silica was made by electrolysis and the carbon as the electrode. When electrolysis was taking place, every 30 minutes is measured pH in the anode and cathode area until the pH in catode and anode was same and every 30 minutes also take a little retrieval solution for analysis by PSA (Particle Size Analyzer), and AAS (Atomic Absorption Spectrophotometer). When electrolysis was done, solution in anode was taken and aging for 18 hours then filter the precipitate of silica after that dry in oven for 18 hours at 80 o C.
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PRELIMINARY DESIGN OF PRECIPITATED SILICA PLANT FROM SULPHURIC ACID AND SODIUM SILICATE   Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 40,000 ton/years.

PRELIMINARY DESIGN OF PRECIPITATED SILICA PLANT FROM SULPHURIC ACID AND SODIUM SILICATE Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 40,000 ton/years.

oxidation of non-metallic compounds. it has a solid powder form, white, odorless, insoluble in water, and has a crystalline structure. The process of manufacturing of precipitated silica using silicate acidification uses CSTR reactor (continuous stirrer tank reactor). It operates at a temperature of 90°C and at a pressure of 1 atm. This reactor proceeds in the liquid phase, irreversible, and non-adiabatic. The product of the reactor are separated in rotary vacuum filter, and then the result is a cake of SiO 2 . It is dried with

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EFFECT OF ACID CONCENTRATION ON CHARACTERS OF SILICA GEL SYNTHESIZED FROM SODIUM SILICATE | Nuryono | Indonesian Journal of Chemistry 21834 40921 1 PB

EFFECT OF ACID CONCENTRATION ON CHARACTERS OF SILICA GEL SYNTHESIZED FROM SODIUM SILICATE | Nuryono | Indonesian Journal of Chemistry 21834 40921 1 PB

Dalam penelitian ini dilakukan pembuatan silika gel dari natrium silikat tanpa templat dengan menggunakan tiga jenis asam asam sitrat, H2SO4, dan HCl pada berbagai konsentrasi.. Selain[r]

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PRELIMINARY DESIGN OF PRECIPITATED SILICA PLANT FROM SULPHURIC ACID AND SODIUM SILICATE   Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 45,000 ton/year.

PRELIMINARY DESIGN OF PRECIPITATED SILICA PLANT FROM SULPHURIC ACID AND SODIUM SILICATE Preliminary of Precipitated Silica Plant from Sulphuric Acid and Sodium Silicate with Capacity of 45,000 ton/year.

has a solid powder form, white, odorless, insoluble in water, and has a crystalline structure. The process of manufacturing of precipitated silica using silicate acidification uses CSTR reactor (continuous stirrer tank reactor). It operates at a temperature of 90°C and at a pressure of 1 atm. This reactor proceeds in the liquid phase, irreversible, and non-adiabatic. The product of the reactor are separated in rotary vacuum filter, and then the output is a cake of SiO 2 . It is dried with dryer.

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DEVELOPMENT OF VOLCANIC MUD-BASED GEOPOLYMER ARTIFICIAL AGGREGATE

DEVELOPMENT OF VOLCANIC MUD-BASED GEOPOLYMER ARTIFICIAL AGGREGATE

Table 5 shows the properties of the volcanic mud-based artificial geopolymeric aggregates with a combination of sodium hydroxide and sodium silicate solution as the alkaline activator. All four specimens are stable after soaking 24 hours in the tap water. The unit weight of the aggregates were ranged in between 1610 to 1800 kg/m 3 , which satisfies the requirement for lightweight aggregates, i.e.

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ADSORPTION OF Mg(II) AND Ca(II) ON DISULFONATO-SILICA HYBRID | Azmiyawati | Indonesian Journal of Chemistry 21334 40420 1 PB

ADSORPTION OF Mg(II) AND Ca(II) ON DISULFONATO-SILICA HYBRID | Azmiyawati | Indonesian Journal of Chemistry 21334 40420 1 PB

The synthetic procedure was based on the production of the new sylilant agent named DSSH (Fig. 1) from the reaction between 4-amino-5-hydroxy naphtalene-2,7-disulfonic acid monosodium salt (ANSNa) and 3-chloropropyltrimethoxysilane (SiCl) according to Eq. (1). This reaction is analogue with the synthetic procedure of the reaction between 2- mercaptothiazoline (MTZ) and 3-chloropropyltrimethoxy silane (SiCl) to produce SiMTZ has reported by Evangelista, S.M., et al. [7]. The final silica modified with ANSNa was produced by ordered polymerization of Si-sulfonate, sodium silicate, and hydrochloric acid according to Eq. (2).
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BASIC THEORY  PENGARUH PENGGUNAAN FIBER GLASS PADA BETON RINGAN TERHADAP KUAT TEKAN DAN KUAT LENTUR.

BASIC THEORY PENGARUH PENGGUNAAN FIBER GLASS PADA BETON RINGAN TERHADAP KUAT TEKAN DAN KUAT LENTUR.

Actually, geopolymer concrete can be produced no only from fly ash but geopolymer can be also produced with silica and materials rich in alumina. Several studies have reported the use of geopolymer in concrete is beneficial. Most of the studies investigated the use of alkali activators containing sodium hydroxide and sodium silicate; or potassium hydroxide and potassium silicate.

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PABRIK SILICA GEL DARI SODIUM CARBONATE DAN PASIR SILIKA DENGAN PROSES HYDROLYSIS.

PABRIK SILICA GEL DARI SODIUM CARBONATE DAN PASIR SILIKA DENGAN PROSES HYDROLYSIS.

Beberapa tahun perkembangan dalam teknologi, pembuatan silica gel ini dapat dilakukan dengan dua macam cara dengan bahan baku yang berbeda. Bahan baku yang dipergunakan adalah alkali silicate atau lebih umum dikenal dengan nama sodium silicate. Pada pengendalian bahan baku utama, dapat dipergunakan sodium silicate secara langsung atau dapat dengan cara mereaksikan sodium carbonate dengan pasir silika.

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this  file 1697 4474 1 PB

this file 1697 4474 1 PB

The resulting substance was then dissolved in mineralized water into a yellowish brown of sodium silicate solution. The Na silicate solution is used as a precursor of silica. The solution of silicic acid is added HCl 1 M dropwise until it has pH 7. The solution is then allowed to stand for 72 hours until gel is formed. The formed gel is then washed with demineralized water and the residue is dried in an oven at 80° C. The formed silica is then crushed and sieved with 100 mesh sieve. Silica has been heated at 400 o C and 800 o C for 4
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Factors Affecting the Setting Time of Fly Ash-Based Geopolymer ANTONI

Factors Affecting the Setting Time of Fly Ash-Based Geopolymer ANTONI

Abstract. Fly ash is a waste from coal burning, that are generated with fluctuation both in its physical and chemical characteristics. This characteristics of fly ash when used in the making of geopolymer concrete will greatly affect the final products obtained. The pH value measured in fly ash, according previous research, can influence the setting time of geopolymer and fly ash with high pH values can cause flash-setting in the concrete. Understanding more clearly about the factors that affect the setting time of fly ash based geopolymer is important for further progress and development of the material. It was found that factors that influence the setting time of geopolymer was not only from the physical and chemical properties of the fly ash itself. Other factors such as composition and mix design, manufacturing process and environmental conditions can also affect its setting time. The experimental results showed that fly ash particle size, CaO and MgO content, in addition to ratio of sodium silicate and sodium hydroxide in the alkali solution, molarity of NaOH, initial temperature of the mixture, curing temperature, and mix volume could potentially influence the setting time of the geopolymer mixture.
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Compressive Strength of Geopolymer Based on the Fly Ash Variation

Compressive Strength of Geopolymer Based on the Fly Ash Variation

Specimen preparation and testing. The NaOH solution in accordance with a predetermined ratio was made one day before mixing. Fine aggregate and fly ash is mixed in advance to make a uniform dried material. Mixing an alkaline solution containing sodium hydroxide liquid and sodium silicate liquid was done prior mixing with the binder and then with the aid of a hand drill and a table vibrator all material are mix to ensure uniform mixing and all done in less than 5 minutes. Casting is done on the cube formwork measuring 50×50×50 mm. After casting, plastic sheet was wrapped in the formwork to avoid excessive evaporation. Curing was done in oven with a temperature of 60°C for 24 hours. After that, the specimen can be demolded and it was stored at room temperature until testing time. Compressive strength testing conducted on mortar aged 3, 7 and 14 days. From each mix design, three specimens are averaged to obtain the compressive strength data.
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BAB II TINJAUAN PUSTAKA - Pra Rancangan Pabrik Pembuatan Sodium Lactate Dari Molase Dengan Kapasitas Produksi 1.800 Ton/Tahun

BAB II TINJAUAN PUSTAKA - Pra Rancangan Pabrik Pembuatan Sodium Lactate Dari Molase Dengan Kapasitas Produksi 1.800 Ton/Tahun

Asam laktat 70% kemudian direaksikan dengan NaOH 50% dengan perbandingan berat 30 : 19 pada suhu 71 o C (konversi 98,5% - 99%), di mana sodium laktat yang dihasilkan akan mempunyai kadar 50 – 53% (Welsh, 1939). Reaksi pembentukan sodium sulfat adalah:

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PENGARUH KONSENTRASI PENAMBAHAN SODIUM NITRAT DAN SODIUM FOSFAT PADA MEDIA GUILLARD TERHADAP KONSENTRASI BIOMASSA MIKROALGA Nannochloropsis sp.

PENGARUH KONSENTRASI PENAMBAHAN SODIUM NITRAT DAN SODIUM FOSFAT PADA MEDIA GUILLARD TERHADAP KONSENTRASI BIOMASSA MIKROALGA Nannochloropsis sp.

The aim of this study was to understand the effect of sodium nitrate and sodium phosphate concentration on Guillard medium to yields of biomass, and also to determine the best concentration of sodium nitrate and sodium phosphate to produce the highest yields of biomass on marine microalgae Nannochloropsis sp. Determining the effects of sodium nitrate and sodium phosphate on biomass was performed using Response Surface Methodology (RSM). The concentrations of sodium nitrate and sodium phosphate on Guillard medium affects the yields of biomass on marine microalgae Nannochloropsis sp. The optimum concentration of sodium nitrate and sodium phosphate to produce the highest yields of biomass were 178.14 g/l and 13.34 g/l respectively, with biomass concentration of 8.00 x 10 7 cell/ml.
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