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Fithry , Dwi Annisa
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Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Pengaruh Lime Saturation Faktor (LSF) Terhadap Kualitas C3S Dan Free Lime (FcaO) Pada Produksi Klinker PT. Semen Padang Fithry , Dwi Annisa; Parmanaon, Durain; Rahmad, Alfein; Arbi, Raihan Alvaro
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 2 (2025): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i2.42498

Abstract

PT Semen Padang is one of the largest cement companies in Indonesia, the process at PT Cement Padang consists of Raw Mill, Kiln, and Cement Mill units. One very important process is in the kiln where the process of burning raw mix materials into clinker occurs. Clinker is a product produced by burning a mixture of raw materials in the form of limestone, silica stone, clay, and iron sand which has become a Raw mix at high temperatures. The quality of clinker can affect the quality of cement, good quality will produce cement as desired, such as compressive strength, durability, and appropriate binding time. From this study, the incoming mass balance of 465.4501869 and the outgoing mass balance of 465.4364777 obtained a mass loss of 0.003%, while the incoming and outgoing energy balance is the same, namely 457,422,536.27.  By optimizing clinker production with the influence of lime saturation factor (LSF) on C3S and free lime (FcaO), the results obtained are in accordance with standardization.
Pemurnian Minyak Jelantah Menggunakan Adsorben Natural Dari Pelepah Sawit dengan Perbedaan Ukuran Mesh dan Massa Fithry , Dwi Annisa; Haryanto, Bode; Affandi, Rizki; Hutabarat, Asrina; Febrisma, Anggun
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 2 (2024): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i2.25105

Abstract

Indonesia is the second largest producer of palm oil in the world today after Malaysia. Since 2003, the amount of palm oil production in Indonesia has reached approximately 9.9 million tons per year. According to (BPS 2021), the area of oil palm land in North Sumatra reached 442 072.76 hectares. This research will purify used cooking oil using natural adsorbents by utilizing palm frond waste. Palm fronds are chopped into powder, then sifted with sizes of 50, 70 and 100 mesh after which they are weighed with weights of 1.5, 3 and 4.5 grams. Oil palm frond adsorbents with mass variations of 4.5 grams have the greatest adsorption power in reducing used cooking oil and the best adsorption kinetics based on the correlation coefficient is the pseudo second order equation.
Perbedaan Massa dan RPM Terhadap Adsorben Karbon Pelepah Sawit pada Pemurnian Minyak Jelantah Fithry , Dwi Annisa; Haryanto, Bode; Febrisma, Anggun; Hutabarat, Astrina; Affandi, Rizki
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 2 (2024): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i2.25106

Abstract

The statistics center in 2021 stated that North Sumatra is the second largest palm oil-producing province in Indonesia with a plantation area of 1,373.30 Ha. The use of cooking oil in Indonesia in 2021 was 18.4 million tons and increased by 6% from the previous year. This research utilizes palm fronds for the manufacture of adsorbents in cooking oil refining. The method used is carbonization with the help of pyrolysis. The carbon is chopped into powder and divided by variations of 1.5, 3, and 4.5 grams. Each gram is stirred using a shaker with speed variations of 50, 70, and 100 rpm. Turbidity is tested using a turbidimeter once every 20 minutes for 180 minutes. The results of the analysis showed that the best adsorbent weight in reducing used cooking oil was 4.5 grams with a turbidity level of 15.5 NTU and stirring of 100 rpm.
Pengaruh acid wash cell elektrolyzer terhadap kenaikan nilai k faktor pada unit chemical making 13 PT. Indah Kiat Pulp and Paper tbk. Perawang – Riau Fithry , Dwi Annisa; Rawadi, MHD Raihan; Yusri, Muhammad; Azhar, Helmi; Siburian, Sutoyo
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 4 (2024): October
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i4.32909

Abstract

Sodium chlorate (NaClO3) is used to produce clorine dioxide (ClO2), which is used in the bleaching process in the pulp and paper industry. Sodium chlorate is produced in the industry by electrolysis process. This electrolysis process produces 2 main products, namely hydrogen and sodium chlorate. hydrogen is used in the process of making hydroclorid acid (HCl) and sodium chlorate is used in the process of making ClO2. In the process of making chlorate there are several things that must be considered, including: pH, oxygen levels in the degasifier, conditions of the hypo tower system, salt and chlorate concentration, and K cell factor. Based on the results of the above analysis, it can be seen that the acid wash cell is able to reduce the K factor of the cell. Do not run the electrolyzer if the cell voltage is above 3.5 volts. This is because at a voltage above 3.5 volts oxygen formation occurs, if oxygen meets hydrogen gas from electrolysis can cause an explosion.
Co-Authors Affandi, Rizki Arbi, Raihan Alvaro Azhar, Helmi Febrisma, Anggun Haryanto, Bode Hutabarat, Asrina Hutabarat, Astrina Muhammad Yusri Parmanaon, Durain Rahmad, Alfein Rawadi, Mhd Raihan Siburian, Sutoyo