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The effect of the addition combination of chicken eggshell adsorbents (Gallus gallus domesticus) and siwalan fiber (Borassus flabellifer) on the adsorption process of used cooking oil Siswanto, Anggun Puspitarini; Khasanah, Siti Khofifatul
Jurnal Rekayasa Proses Vol 17, No 2 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.83243

Cooking oil is a daily necessity. Repeated use of oil with high heating temperatures (200-250°C) can result in oxidation and polymerization processes in the oil. Cooking oil purification is carried out by the adsorption method which utilizes cellulose content in coconut coir and CaCO3 in eggshell so that it can meet SNI 3741:2013. In this study, the adsorption process was carried out using siwalan coir adsorbents activated by 9% ZnCl2 and eggshell adsorbents which were activated using a 600oC furnace for 3 hours. This study was handled using a factorial 23 experimental design and it was found that the adsorption spin time variable was the influential variable. The results of this study were per SNI 3741:2013 with an FFA concentration of 0.3049% and a peroxide value of 2 mekO2/kg with a mass of adsorbent for siwalan coir and shells of 2: 10 gram, the optimum time was 69 minutes. Analysis of the findings of the optimization sample which has a specific gravity of 0.91 gram/cm3, a clear yellow color, and a moisture content of 0.083%.

The effect of the addition combination of chicken eggshell adsorbents (Gallus gallus domesticus) and siwalan fiber (Borassus flabellifer) on the adsorption process of used cooking oil Siswanto, Anggun Puspitarini; Khasanah, Siti Khofifatul
Jurnal Rekayasa Proses Vol 17, No 2 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.83243

Cooking oil is a daily necessity. Repeated use of oil with high heating temperatures (200-250°C) can result in oxidation and polymerization processes in the oil. Cooking oil purification is carried out by the adsorption method which utilizes cellulose content in coconut coir and CaCO3 in eggshell so that it can meet SNI 3741:2013. In this study, the adsorption process was carried out using siwalan coir adsorbents activated by 9% ZnCl2 and eggshell adsorbents which were activated using a 600oC furnace for 3 hours. This study was handled using a factorial 23 experimental design and it was found that the adsorption spin time variable was the influential variable. The results of this study were per SNI 3741:2013 with an FFA concentration of 0.3049% and a peroxide value of 2 mekO2/kg with a mass of adsorbent for siwalan coir and shells of 2: 10 gram, the optimum time was 69 minutes. Analysis of the findings of the optimization sample which has a specific gravity of 0.91 gram/cm3, a clear yellow color, and a moisture content of 0.083%.

Optimisation of Tapioca Oxidative Reaction by Ozone Treatment: Effect of pH, Process Time and Temperature Sumardiono, Siswo; Pudjihastuti, Isti; Supriyo, Edy; Siswanto, Anggun Puspitarini
Journal of Vocational Studies on Applied Research Volume 2, Issue 1, Year 2020 (April 2020)
Publisher : Vocational College of Universitas Diponegoro

Modification of cassava starch was produced by oxidation using ozone treatment. The oxidized starch is used in the paper processing in the pulp and paper industries. The aim of this research was to determine the effect of reaction conditions (pH and temperature) in produced oxidized starch. The oxidative reaction of cassava starch was using ozone as an oxidator while the operating condition was at temperatures of 30, 35, 40 and 45 oC in atmospheric pressure. The fixed variables were weight of cassava starch 80 grams, and volume of aquadest 200 ml. The change variables are reaction time (15, 30, 45 and 60 minutes) and pH solution (6, 7, 8 and 9). The product of oxidized starch was analyzed for carboxyl group according to JEFA method, swelling power according to Leach method and solubility according to Kainuma method. The result of this research shows with an increasing of pH reaction and reaction time, the carboxyl group and solubility increased, but swelling power decreased. The best condition was obtained at the pH of 9 with 60 minutes of reaction time.

The Effect of Bacillus subtilis on Bioethanol Production from Ambon Banana (Musa paradisiaca var. sapientum Linn) Peels by Using Fermentation Process Bilyartinus, Gaudentius; Siswanto, Anggun Puspitarini
Journal of Vocational Studies on Applied Research Volume 3, Issue 2, Year 2021 (October 2021)
Publisher : Vocational College of Universitas Diponegoro

The breakthrough to optimize Indonesia's energy is by utilizing abundant renewable energy sources. Its geographic location has the potential to become a country with the largest renewable energy source in the world. The potential energy that comes from vegetables is called bioethanol. Bioethanol is an organic fuel produced by bioethanol fermentation. It can be an alternative material for making sanitary products amid the increasing spread ofCOVID-19 in Indonesia.So the authors try to innovate how to use Ambon Banana (Musa paradisiaca var. sapientum Linn) peels to become bioethanol. This research aimed to investigate the effect of Bacillus subtilis in the fermentation of bioethanol production from Ambon banana peels. The methods used were pretreatment, hydrolysis, fermentation, and distillation. Bacillus subtilis and Saccharomyces cerevisiae ratio (10: 5 and 5: 5) use for obtaining high ethanol yields, as well as variations in pH 2 and 6 in the fermentation starter. The variable were designed by using Factorial Design. The result shows the yeast ratio of B. subtilis and S. cerevisiae (10: 5) resulted the highest concentration of bioethanol (6%) in 6 days. In acidic conditions (pH 2), the bacteria don’t grow optimally. The higher concentration of bioethanol (6%) was reached in pH 6.The research supports the Government Program Reducing the dependency of fossil fuels and innovation to produce sanitary product from bioethanol.

The effect of the addition combination of chicken eggshell adsorbents (Gallus gallus domesticus) and siwalan fiber (Borassus flabellifer) on the adsorption process of used cooking oil Siswanto, Anggun Puspitarini; Khasanah, Siti Khofifatul
Jurnal Rekayasa Proses Vol 17 No 2 (2023): Volume 17, Number 2, 2023
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.83243

Cooking oil is a daily necessity. Repeated use of oil with high heating temperatures (200-250°C) can result in oxidation and polymerization processes in the oil. Cooking oil purification is carried out by the adsorption method which utilizes cellulose content in coconut coir and CaCO3 in eggshell so that it can meet SNI 3741:2013. In this study, the adsorption process was carried out using siwalan coir adsorbents activated by 9% ZnCl2 and eggshell adsorbents which were activated using a 600oC furnace for 3 hours. This study was handled using a factorial 23 experimental design and it was found that the adsorption spin time variable was the influential variable. The results of this study were per SNI 3741:2013 with an FFA concentration of 0.3049% and a peroxide value of 2 mekO2/kg with a mass of adsorbent for siwalan coir and shells of 2: 10 gram, the optimum time was 69 minutes. Analysis of the findings of the optimization sample which has a specific gravity of 0.91 gram/cm3, a clear yellow color, and a moisture content of 0.083%.

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