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All Journal JURNAL INTEGRASI PROSES Jurnal IPTEK
Caecilia Pujiastuti
Universitas Pembangunan Nasional "Veteran" Jawa Timur
Civil Engineering, Building, Construction & Architecture Computer Science & IT Industrial & Manufacturing Engineering Mechanical Engineering Other

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Synthesis of Tilapia Feed From a Mixture of Tarum Leaves (Indigosfera sp) and Fermented Shrimp Waste by EM-4 Probiotics Bimantara Hidayah; Yuki Amru Alwansyah; Nove Kartika Erliyanti; Caecilia Pujiastuti
Jurnal IPTEK Vol 27, No 1 (2023)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i1.4120

Abstract

Feed is the most important thing in doing a tilapia fish farming. In a feed required appropriate and balanced nutritional content so that fish growth becomes faster. Shrimp waste and tarum leaves are an alternative raw material for the manufacture of tilapia feed because they have a fairly high protein content. The purpose of this study was to examine the comparative effect of adding the percentage of tarum leaf meal and EM-4 fermented shrimp waste on water content, ash content, protein content, fat content, and crude fiber content of feed. The research method used is using the EM-4 fermentation process on shrimp waste. The variations carried out were the concentration of the addition of EM-4 (14,16,18,20, and 22 ml) and the percentage of addition of Wet Shrimp Waste (WSW) and Tarum Leaf Powder (TLP) (90%WSW + 10%TLP, 80%WSW + 20%TLP, 70%WSW + 30%TLP, 60%WSP + 40%TLP, and 50%WSW + 50%TLP). The results showed that the addition of fermented WSW EM-4 and TLP had a significant effect on the protein, fat and crude fiber content, while the water and ash content did not have a significant effect. The best tilapia feed formulation results were obtained at a ratio of 60% WSW and 40% TLP using 18 ml of EM-4 with the results obtained for water, ash, protein, fat and crude fiber content each of 7.09%. ; 12.59%; 29.98%; 7.45%; and 3.49%.
KINETICS STUDY OF AMMONIUM SULFATE FORMATION FROM BLEACHING EARTH INDUSTRIAL WASTEWATER USING AMMONIUM HYDROXIDE Yusup Fatkhul Mu’is; Andi Safira Larasati Syamhari; Caecilia Pujiastuti; Silvana Dwi Nurherdiana; Suprihatin Suprihatin
JURNAL INTEGRASI PROSES Vol 15, No 1 (2026)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v15i1.39320

Abstract

The increasing generation of sulfuric acid-rich liquid waste from bleaching earth activation poses significant environmental concerns due to its high acidity and potential ecological impact. This study presents a kinetic analysis of ammonium sulfate formation from bleaching earth waste, which has not been widely reported, particularly regarding the determination of reaction orders and activation energy. The reaction was carried out by neutralization with ammonium hydroxide, with no variation in reactant concentration. Experiments were conducted by varying the reaction time (5–25 minutes) and temperature (30–70 °C) to evaluate their effects on the reaction rate. Kinetic analysis was performed by testing zero-, first-, and second-order models using linear regression in Microsoft Excel. The results indicate that the first-order model best represents the experimental data, with R² values ranging from 0.97 to 0.99. The Arrhenius plot of ln k versus 1/T showed a linear relationship with R² = 0.9826, yielding an activation energy (Ea) of 10.611 kJ/mol. The rate constant (k) increased with temperature, confirming the temperature dependence of the reaction. The maximum sulfuric acid conversion achieved was 94.54% at 70 °C and 25 minutes. These findings demonstrate that the developed kinetic model provides a reliable basis for reactor design and process scale-up. The results highlight the potential of converting sulfuric acid waste into value-added ammonium sulfate, contributing to sustainable and economically viable waste management practices.
Synthesis of Tilapia Feed From a Mixture of Tarum Leaves (Indigosfera sp) and Fermented Shrimp Waste by EM-4 Probiotics Bimantara Hidayah; Yuki Amru Alwansyah; Nove Kartika Erliyanti; Caecilia Pujiastuti
Jurnal IPTEK Vol 27, No 1 (2023): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i1.4120

Abstract

Feed is the most important thing in doing a tilapia fish farming. In a feed required appropriate and balanced nutritional content so that fish growth becomes faster. Shrimp waste and tarum leaves are an alternative raw material for the manufacture of tilapia feed because they have a fairly high protein content. The purpose of this study was to examine the comparative effect of adding the percentage of tarum leaf meal and EM-4 fermented shrimp waste on water content, ash content, protein content, fat content, and crude fiber content of feed. The research method used is using the EM-4 fermentation process on shrimp waste. The variations carried out were the concentration of the addition of EM-4 (14,16,18,20, and 22 ml) and the percentage of addition of Wet Shrimp Waste (WSW) and Tarum Leaf Powder (TLP) (90%WSW + 10%TLP, 80%WSW + 20%TLP, 70%WSW + 30%TLP, 60%WSP + 40%TLP, and 50%WSW + 50%TLP). The results showed that the addition of fermented WSW EM-4 and TLP had a significant effect on the protein, fat and crude fiber content, while the water and ash content did not have a significant effect. The best tilapia feed formulation results were obtained at a ratio of 60% WSW and 40% TLP using 18 ml of EM-4 with the results obtained for water, ash, protein, fat and crude fiber content each of 7.09%. ; 12.59%; 29.98%; 7.45%; and 3.49%.
Co-Authors Andi Safira Larasati Syamhari Bimantara Hidayah Erliyanti, Nove Kartika S Suprihatin Silvana Dwi Nurherdiana Yuki Amru Alwansyah Yusup Fatkhul Mu’is