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PEMANFAATAN SERABUT KELAPA SEBAGAI BIOSORBEN DALAM REMOVAL COD PADA LIMBAH CAIR INDUSTRI PEWARNA MAKANAN Dian Yanuarita Purwaningsih; Eka Cahya Muliawati
Journal of Industrial Process and Chemical Engineering (JOICHE) Vol 2, No 1 (2022)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.joiche.2022.v2i1.3151

Abstract

The liquid waste of the food industry has recently increased. Therefore, when it is discharged into the waters, it will cause turbidity and can damage the ecosystem inside. One of the wastewater treatment techniques is absorption using biosorbents, one of which is made from coconut fiber to reduce the color intensity of the liquid waste. The purpose of this study was to determine the effects of the coconut fiber biosorbent on the color intensity, COD, and pH of the liquid waste of the food industry. In this research, the coconut fiber was delignified with a 2 M NaOH solution and then activated with a 3 N solution. The research variables consisted of the weight percentages of biosorbent by 1%, 2%, 3%, 4%, and 5%, and the contact time of 30 and 60 minutes with shaker stirring. Meanwhile, the most optimum results in COD removal happened at the addition of 4% for 60 minutes, from the initial COD of 1179 mg/L O2 to 780 mg/L O2 within the removal of 26.5%. The highest pH removal of 6.98 occurred in the variable addition of 1% for 30 minutes, whereas the lowest pH removal of 6.5
Pembuatan Biosorben Dari Kulit Pisang Kepok Untuk Memurnikan Minyak Goreng Bekas Sari, Retno Indah; Purwaningsih, Dian Yanuarita; Rosyidah, Annisa Khoirur
Journal of Industrial Process and Chemical Engineering (JOICHE) Vol 3, No 1 (2023)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.joiche.2023.v3i1.4665

Abstract

Cooking oil is a basic need of sicety which has the main content oftriglycerides. Tryglicerides function of fry food. The use of cooking oil continuously can reduce the quality of cooking oil. There are several attempts to improve the acid number and perokxide value in cooking oil. One of the efforts is providing an adsorbent in the form of kepok banana peels (Musa paradisiaca L.) using cooking oil. Kepok banana peel contain cellulose which acts as an adsorbent. This study used H3PO4 as an activator and NaOH as ad delignification in manufacturing kepok banan peel biosorbent. The research method includes the preparation of the biosorbent, the delignification  process, the activation  of the biosorbent with an activator, and the application of the biosorbent to used cooking oil. The method used is the adsorption method. The adsorption method used variable perecentage of the kepok banana peel mass : 5%, 10%, 15%, 20%, 25% (m/m), and adsorption method contact times were 60, 120, 180, and 240 minutes. The analyzes tested were the acid number. The acid number value of used cooking oil decreased with the addition of the mass of the biosorbent and the length of contact time. The optimum result obtained after treatment on the acid number value were 6.507 mg KOH/gr with a variable mass of biosorben of 25% at a concatct time of 240 minutes.
Enhancing Industrial Wastewater Oil Removal Through Integrated Coagulation–Flocculation Pretreatment and Dissolved Air Flotation (DAF) Yustia Wulandari Mirzayanti; Purwaningsih, Dian Yanuarita; Ni'am, Achmad Chusnun; Awaludin, Aditya Fikri
Journal of Research and Technology Vol. 10 No. 2 (2024): JRT Volume 10 No 2 Des 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i2.1516

Abstract

Oil content in the water that exceeds the threshold can pollute the environment if disposed of directly without waste treatment. This study conducted a case study of engineering waste treatment containing 1% oil using the Dissolve Air Flotation (DAF) method through coagulant and flocculant pre-treatment. The independent variable used in this study is pressure and residence time, where the pressure variable consists of 0.6, 0.8, 1, 1.2, and 1.4 bar, while the residence time variables comprised 5, 15, 30, 45, and 60 minutes. This study obtained the maximum pressure and residence time, namely at a pressure of 1.4 bar and a residence time of 60 minutes; the highest oil removal was 98.32%. Turbidity removal was 92.31% in 1% of engineering waste for engineering destruction.
PABRIK SODIUM SULFAT DEKAHIDRAT DARI SODIUM CHLORIDE DAN ASAM SULFAT DENGAN PROSES MANNHEIM Purwaningsih, Dian Yanuarita; Mulya, Jaya Hadi
Journal of Industrial Process and Chemical Engineering (JOICHE) Vol 4, No 2 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.joiche.2024.v4i2.7703

Abstract

At the end of 2019, the COVID-19 pandemic hit the world, which had several effects on various sectors, one of which made several industrial sectors suffer heavy losses and even bankruptcy. The industrial sector needs household goods, such as soap and detergent, among the most needed items during the Covid-19 pandemic. To produce these hygiene items, the industrial sector requires various raw materials, one of which is Sodium sulfate (Na2SO4). Sodium sulfate is processed using the Mannheim process through reaction, crystallization, and drying stages. The designer plans to build a plant with a capacity of 20,000 tons/year in the industrial area of Lamongan, East Java. The raw materials used consist of sulfuric acid and sodium chloride. The utility unit consists of a water supply unit, steam supply unit, power generation unit, fuel supply unit, and cooling supply unit. The company's business entity is a Limited Liability Company (PT) using a line and staff organizational structure with 150 employees. The employee work system is based on the division of working hours consisting of shift and non-shift employees. The researchers produced several results of economicanalysis: Fixed Capital Investment (FCI) value of Rp. 195,180,724,917, Working Capital Investment (WCI) value of Rp. 34,443,657,338, Total Cost Investment (TCI) value of Rp. 229,624,382. 255, then the Total Product Cost (TPC) value is Rp. 441,103,560,855, and the Total Sale (TS) value is Rp. 522,048,972,696, Internal Rate of Return (IRR) of 35.98%, Pay Out Time (POT) for 3.15 years, and Break-Even Point (BEP) value of 36.40%. Based on the above evaluation results, the Sodium sulfate decahydrate plant from Sulfuric acid and Sodium chloride by Mannheim process is feasible.
Pra Perancangan Pabrik Glucitol Dari Tepung Tapioka Dengan Proses Hidrogenasi Katalitik Purwaningsih, Dian Yanuarita
Journal of Industrial Process and Chemical Engineering (JOICHE) Vol 4, No 1 (2024)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.joiche.2024.v4i1.7704

Abstract

Glucitol is the result of glucose reduction by changing the aldehyde group to a hydroxyl group, hence the name sugar alcohol. Sugar substitute sweeteners have various requirements, namely having a sweet taste, not causing toxicity to the body, calorie, and can be produced in large capacities. The most relevant sugar substitute with these criteria is glucitol. Glucitol factory is planned to be established in Jombang Regency, East Java with a production capacity of 20,000 tons/year. The raw material used in this glucitol factory is using tapioca starch raw material with a catalytic hydrogenation process. In the manufacture of glucitol there are 2 important processes, namely, the first process converts strach into glucose or dextrose with supporting raw materials for amylase enzymes and glucoamylase enzymes in the main tool, namely the reactor. In the catalytic hydrogenation process glucose or dextrose is reacted with hydrogen gas at high temperature and pressure with the help of the addition of nickel raney catalyst. The resulting glucitol is then purified in the evaporator to produce 70% glucitol. In the design of the Glucitol factory requires a total capital investment of Rp. 197,294,444,028 The total production cost of this factory is Rp. 552,393,444,402 with annual sales of Rp. 800,000,000,000. From the economic analysis, BEP was obtained at 23.7% with POT for 2.122 years and IRR of 64.14%. In terms of engineering and economics, this plant is feasible to establish