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Sariadi, S
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Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Materials Science & Nanotechnology

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TESTING CHEMICAL ZINC PHOSPHATE BASE AS A CORROSION INHIBITOR ON CARBON STEEL IN THE CORROSION MEDIA OF COOLING WATER, SEA WATER AND PDAM WATER Sariadi, S; Kenady, Rengga Rahmat; Irwan, I; Zaini, Halim
Jurnal Sains dan Teknologi Reaksi Vol 22, No 01 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i01.5620

Abstract

Zinc phosphate base corrosion inhibitor which aims to determine the effectiveness of the inhibitor to provide protection to carbon steel against the rate of corrosion, with variations in inhibitor concentration at 0, 20, 40 and 60 ppm.This research uses the weight loss method and studies the performance of zinc phosphate base chemical inhibitors in the mediacooling water, sea water and PDAM waterThis is done by carrying out SEM (Scanning Electron Microscopy) testing. The type of steel specimen used in the research is Carbon Steel and deepCorrosion media are cooling water, sea water and PDAM water.The addition of zinc phosphate base carbon steel inhibitor is effective in reducing the corrosion rate of carbon steel in PDAM water and sea water. in sea water media without inhibitors, a drastic reduction in the corrosion rate was seen from 119.0457 mpy to 1.7754 mpy and in PDAM water media without inhibitors, a drastic decrease in the corrosion rate was seen from 18.5873 mpy to 3.4163 mpy, after adding inhibitors with a concentration of 60 ppm. The efficiency of the zinc phosphate base inhibitor in cooling water corrosion media was 30.262% at a concentration of 40 ppm and a soaking time of 20 days. Keywords :Inhibition efficiency, Corrosion Inhibitors, Corrosion in sea water, Corrosion in cooling water, Corrosion Rate, Zinc Phosphate base.
THE EFFECT OF STORAGE TIME AND ORIGIN OF RAW MATERIALS ON CPO QUALITY IN FFA, LAUNDRY AND MOIST PARAMETERS IN PKS INTI GUNA NABATI Munandar, Iqbal Haris; Fachraniah, F; Sariadi, S
Jurnal Sains dan Teknologi Reaksi Vol 22, No 02 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i02.6164

Abstract

ABSTRACTIndonesia is currently the largest palm oil producer in the world with a production of around 3,855,000 tons/year in 2023. This study discusses the potential and quality of palm oil based on the duration of fruit storage (1, 2, 3, 4, 5, 6 and 7 days). The research was carried out from November to December 2023, at PT Inti Guna Nabati, Sarolangun, South Sumatra. The parameters measured for oil potential are crude palm oil (CPO) content, and the quality of palm oil measured is the bleaching regression index (DOBI), free fatty acid content, and moisture content from northern FFB suppliers (Rasau B2 Pamenang Village, Merangin District) and southern FFB suppliers (Setia Marg Village, Muara Lakitan District). Free fatty acids are determined by titration, and moisture content is measured with an electronic moisture analyzer. The purpose of this study is to find out the quality of the two FFB suppliers that are good and suitable for further processing at PKS IGUN. It will be better to bring FFB 1-2 days after harvest directly to the mill because the quality still meets the criteria of the IGUN mill. The results of the study show that the quality potential of FFB is the longer it is stored, the higher the FFA level, the lower the moist, the lower the DOBI. Based on the results of the study, the length of fruit storage has a bad effect on the quality of palm oil. Based on the results of CPO research from Rasau B2 Pamenang Village, Merangin District for FFA 2.13, moist 1.00 and DOBI 1.712, while the results of CPO research from Setia Marga Village, Muara Lakitan District are FFA 2.48, moist 0.47 and DOBI 1.681. Of the two research results, the CPO results from Rasau B2 Pamenang Village, Kec are better.Keywords : palm oil, FFA, laundry, moist
CALCULATING THE NUMBER OF GAS PILOTS AND LNG CIRCULATING IN THE MABOG LINE (MARINE BOIL OF GAS) COOLING SYSTEM AT PT. PERTA ARUN GAS Birri, Chairul; Sariadi, S; Elwina, E
Jurnal Sains dan Teknologi Reaksi Vol 22, No 01 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i01.6144

Abstract

ABSTRACTAlong with the development of PT. Perta Arun Gas, the challenges to refinery operations also have a significant impact, the company is expected to be able to minimize even the slightest losses that may occur during the industrial process. One of them is that in the flow of the LNG distribution (loading) process to ships, the formation of Boil-Off Gas (BOG) as a result of the expansion in the loading room is inevitable. So that the BOG that forms must be eliminated so as not to cause overpressure in the ship's tank, the B-6803/4 marine flare facility is available to burn the formed BOG so as not to pollute the environment if the gas is directly discharged into the atmosphere. The main tool in this recovery system is the Atomizer, which aims to reduce the temperature of the BOG by atomizing a certain amount of LNG with pressurized vapor gas into the BOG input flow so that heat transfer occurs so that it is in accordance with the specifications of the compressor feed temperature. After a series of calculations, it was found that the total LNG and gas buffer needed to be able to cool the MaBOG line during the loading process with an estimated time of 12.3 hours was 305.6 m3 for LNG and as much as 0.069 mmscfd for gas buffer. This need is in the background with the adjustment of the outlet temperature setting of the second section atomizer (V 6805/13-24) is -140 °C and with the input temperature in HV-68108 which is -80 °C. In addition, after obtaining a calculation model to obtain the value of LNG and gas buffer requirements, the author also tried to conduct some systematic analyses on the influence of LNG and gas buffer requirements on changes in BOG inlet temperature using MS. Excel.keyword : LNG, Boil-Off Gas, Buffer Gas
PENURUNAN KANDUNGAN AMMONIA PADA LIMBAH CAIR DENGAN METODA AERASI BUBBLING DAN PEMANASAN Sariadi, S
Jurnal Sains dan Teknologi Reaksi Vol 22, No 02 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i02.6422

Abstract

ABSTRAK Limbah cair yang dihasilkan oleh pabrik pembuatan pupuk urea mengandung ammonia. Apabila kandungan ammonia dalam limbah dalam jumlah yang cukup besar langsung dibuang maka akan mengganggu kelangsungan hidup makhluk yang berada dalam badan penerima akhir buangan limbah tersebut. Untuk itu kandungan ammonia tersebut harus diturunkan sampai memenuhi syarat buangan yang diizinkan. Penurunan kandungan ammonia dapat dilakukan dengan metode aerasi bubbling dan pemanasan. Prinsipnya adalah pengontakan limbah cair dengan udara sehingga ammonia larut di dalamnya, selanjutnya penguapan ammonia dilakukan dengan pemanasan. Variabel yang digunakan adalah temperatur 50, 60, dan 70 0C, waktu kontak 30, 60, dan 90 menit, dan laju alir udara 4, 5, dan 6 ltr/menit. Semakin lama waktu kontak dan semakin tinggi temperatur serta laju alir udara, maka semakin tinggi prosentase penurunan kandungan ammonia. Prosentase penurunan kandungan ammonia yang paling tinggi dicapai pada laju alir udara 6 ltr/mnt pada temperatur 70 0C dan waktu kontak 90 menit yaitu sebesar 88,82%.Kata kunci: Limbah cair, ammonia, aerasi bubbling, pemanasan
UTILIZATION OF NATURAL ZEOLITE AS AN ADSORBENT IN ETHANOL PURIFICATION Haryadi, H; Sariadi, S; Fona, Zahra
Jurnal Sains dan Teknologi Reaksi Vol 22, No 01 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i01.6333

Abstract

ABSTRACT Research about application of natural zeolite (ZA) as adsorbent to absorb water in ethanol has been started. The purpose is, to evaluate the ability of ZA that have been activated in order to absorb water in ethanol. The activator that used is H2SO4 1N and HCl 1N solution. ZA crushed and sieved using a sieve 60, 80, and 100 meshes. A total of 35 grams of sifted ZA mixed with the activator and stirred for 30 minutes and then precipitated for 24 hours. Residue washed until neutral and heated using a furnace at a temperature of 400oC for 2 hours. ZA which has activated used to adsorb the water content in ethanol having a concentration of 60 %, 65 %, 70 %, and 80 %. The results showed that the activated zeolite by using H2SO4 1N solution to absorb water content in the ethanol have the efficiency until 19.7 %. However, the adsorption of water content in ethanol which has more than 60 % concentration, ethanol tends to adsorbed by ZA so that the water content in ethanol to be slightly higher compared with ethanol before adsorption.Keywords: Adsorben, zeolit, water content, activated, adsorbtion.
TESTING CHEMICAL ZINC PHOSPHATE BASE AS A CORROSION INHIBITOR ON CARBON STEEL IN THE CORROSION MEDIA OF COOLING WATER, SEA WATER AND PDAM WATER Sariadi, S; Kenady, Rengga Rahmat; Irwan, I; Zaini, Halim
Jurnal Sains dan Teknologi Reaksi Vol 22, No 01 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i01.6329

Abstract

ABSTRACT Zinc phosphate base corrosion inhibitor which aims to determine the effectiveness of the inhibitor to provide protection to carbon steel against the rate of corrosion, with variations in inhibitor concentration at 0, 20, 40 and 60 ppm.This research uses the weight loss method and studies the performance of zinc phosphate base chemical inhibitors in the mediacooling water, sea water and PDAM waterThis is done by carrying out SEM (Scanning Electron Microscopy) testing. The type of steel specimen used in the research is Carbon Steel and deepCorrosion media are cooling water, sea water and PDAM water.The addition of zinc phosphate base carbon steel inhibitor is effective in reducing the corrosion rate of carbon steel in PDAM water and sea water. in sea water media without inhibitors, a drastic reduction in the corrosion rate was seen from 119.0457 mpy to 1.7754 mpy and in PDAM water media without inhibitors, a drastic decrease in the corrosion rate was seen from 18.5873 mpy to 3.4163 mpy, after adding inhibitors with a concentration of 60 ppm. The efficiency of the zinc phosphate base inhibitor in cooling water corrosion media was 30.262% at a concentration of 40 ppm and a soaking time of 20 days.Keywords : Inhibition efficiency, Corrosion Inhibitors, Corrosion in sea water, Corrosion in cooling water, Corrosion Rate, Zinc Phosphate base.
Co-Authors Birri, Chairul Elwina, E Fachraniah, F Fona, Zahra H Haryadi Halim Zaini, Halim Irwan, I Kenady, Rengga Rahmat Munandar, Iqbal Haris