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Hasibuan, Isti Madinah
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Parameter Biokinetika dari Degradasi Limbah Kol dan Tomat Menggunakan Sistem Bioreaktor Anaerobik Sarah, Maya; Misran, Erni; Maulina, Seri; Pertiwi, Ika; Ritman, Nahlionny; Hasibuan, Isti Madinah; Parulian, Ihut
Jurnal Teknik Kimia USU Vol. 10 No. 2 (2021): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v10i2.5642

Abstract

The world's energy supply is very dependent on non-renewable energy in the form of fossil fuels. This causes fossil fuels depletion and the need for alternative energy sources such as biogas. Biogas is produced from the fermentation process of organic matter with the help of anaerobic bacteria in free oxygen absence. This study aims to produce biogas from cabbage and tomato waste separately. Biogas production was carried out by varying feed concentrations of 100 g/L, 200 g/L, and 300 g/L for cabbage waste and 81.6 g/L; 215 g/L; and 237 g/L for tomato waste. This study consisted of 10 days seeding and acclimatization process, followed by a start-up stage using insulated anaerobic bioreactors. The largest methane from cabbage and tomato waste was 60% at a feed concentration of 200 g/L and 50% at a feed concentration of 237 g/L, respectively. The maximum growth rates (µm) for biogas from cabbage and tomato waste were 0.122 day-1 and 0.121 day-1, respectively.
Hidrolisis Eceng Gondok (Eichhornia Crassipes) Menjadi Glukosa Menggunakan Rotating Microwave Reactor Sarah, Maya; Pratiwi, Ita; Hasibuan, Isti Madinah
Jurnal Teknik Kimia USU Vol. 11 No. 1 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v11i1.6760

Abstract

Water hyacinth is lignocellulosic biomass that has the potential for glucose production because it contains 64.51% cellulose. Hydrolysis of water hyacinth was done in a rotating reactor with a microwave as a heat source. This study aims to obtain glucose by determining the hydrolysis reaction rate constant of power and sulfuric acid (H2SO4) concentration function and to find the best conditions for this hydrolysis process. Several research variables were H2SO4 concentration (0.5 N; 1 N; and 1.5 N), microwave power (600 W and 800 W) and reaction time of 60 minutes. Parameters measured were hydrolyzate temperature, glucose, and cellulose content. The hydrolysis reaction rate constant obtained based on the Arrhenius equation was k =1.30 x 10-2 e-132.172/T and the relationship between H2SO4 concentration and microwave power was C = 0.001P. The best conditions were obtained using 1 N H2SO4 and microwave power of 600 W with final glucose content of 486 mg/L.
Studi Pengaruh Variasi Konsentrasi Garam Dapur (NaCl) sebagai Larutan Elektrolit dan pH Bahan Baku dalam Pembuatan Biobaterai Kering Berbasis Limbah Kulit Pisang Kepok Sarah, Maya; Zelfi, Elfina Rahmania; Kuswara, Marisa Pancar; Hasibuan, Isti Madinah
Jurnal Teknik Kimia USU Vol. 13 No. 1 (2024): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v13i1.11622

Abstract

Batteries are single-use energy. Battery waste disposed on the ground will produce waste that is difficult to decompose naturally. Batteries contain chemicals that are toxic to soil fertility, such as potassium and sodium. One way to utilize battery waste is to turn it into bio-batteries. This research aims to minimize the waste of batteries and kepok banana peels that are underutilized by making environmentally friendly bio-batteries. This study also determines the voltage, current, and power of kepok banana skin-based bio-batteries. The method used is to conduct biobattery trials using paste from kepok banana peels. The results showed that kepok banana peels could conduct electricity to be used as a paste for bio-battery. The most significant voltage generated is 1.38 volts, while the largest current generated is 0.95 A. This bio-battery can last an average of 3 days 8 hours or 92.5 hours.
Parameter Biokinetika dari Degradasi Limbah Kol dan Tomat Menggunakan Sistem Bioreaktor Anaerobik Sarah, Maya; Misran, Erni; Maulina, Seri; Pertiwi, Ika; Ritman, Nahlionny; Hasibuan, Isti Madinah; Parulian, Ihut
Jurnal Teknik Kimia USU Vol. 10 No. 2 (2021): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (390.813 KB) | DOI: 10.32734/jtk.v10i2.5642

Abstract

The world's energy supply is very dependent on non-renewable energy in the form of fossil fuels. This causes fossil fuels depletion and the need for alternative energy sources such as biogas. Biogas is produced from the fermentation process of organic matter with the help of anaerobic bacteria in free oxygen absence. This study aims to produce biogas from cabbage and tomato waste separately. Biogas production was carried out by varying feed concentrations of 100 g/L, 200 g/L, and 300 g/L for cabbage waste and 81.6 g/L; 215 g/L; and 237 g/L for tomato waste. This study consisted of 10 days seeding and acclimatization process, followed by a start-up stage using insulated anaerobic bioreactors. The largest methane from cabbage and tomato waste was 60% at a feed concentration of 200 g/L and 50% at a feed concentration of 237 g/L, respectively. The maximum growth rates (µm) for biogas from cabbage and tomato waste were 0.122 day-1 and 0.121 day-1, respectively.
Hidrolisis Eceng Gondok (Eichhornia Crassipes) Menjadi Glukosa Menggunakan Rotating Microwave Reactor Sarah, Maya; Pratiwi, Ita; Hasibuan, Isti Madinah
Jurnal Teknik Kimia USU Vol. 11 No. 1 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.339 KB) | DOI: 10.32734/jtk.v11i1.6760

Abstract

Water hyacinth is lignocellulosic biomass that has the potential for glucose production because it contains 64.51% cellulose. Hydrolysis of water hyacinth was done in a rotating reactor with a microwave as a heat source. This study aims to obtain glucose by determining the hydrolysis reaction rate constant of power and sulfuric acid (H2SO4) concentration function and to find the best conditions for this hydrolysis process. Several research variables were H2SO4 concentration (0.5 N; 1 N; and 1.5 N), microwave power (600 W and 800 W) and reaction time of 60 minutes. Parameters measured were hydrolyzate temperature, glucose, and cellulose content. The hydrolysis reaction rate constant obtained based on the Arrhenius equation was k =1.30 x 10-2 e-132.172/T and the relationship between H2SO4 concentration and microwave power was C = 0.001P. The best conditions were obtained using 1 N H2SO4 and microwave power of 600 W with final glucose content of 486 mg/L.
Studi Pengaruh Variasi Konsentrasi Garam Dapur (NaCl) sebagai Larutan Elektrolit dan pH Bahan Baku dalam Pembuatan Biobaterai Kering Berbasis Limbah Kulit Pisang Kepok Sarah, Maya; Zelfi, Elfina Rahmania; Kuswara, Marisa Pancar; Hasibuan, Isti Madinah
Jurnal Teknik Kimia USU Vol. 13 No. 1 (2024): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v13i1.11622

Abstract

Batteries are single-use energy. Battery waste disposed on the ground will produce waste that is difficult to decompose naturally. Batteries contain chemicals that are toxic to soil fertility, such as potassium and sodium. One way to utilize battery waste is to turn it into bio-batteries. This research aims to minimize the waste of batteries and kepok banana peels that are underutilized by making environmentally friendly bio-batteries. This study also determines the voltage, current, and power of kepok banana skin-based bio-batteries. The method used is to conduct biobattery trials using paste from kepok banana peels. The results showed that kepok banana peels could conduct electricity to be used as a paste for bio-battery. The most significant voltage generated is 1.38 volts, while the largest current generated is 0.95 A. This bio-battery can last an average of 3 days 8 hours or 92.5 hours.
Co-Authors Kuswara, Marisa Pancar Maulina, Seri Misran, Erni Parulian, Ihut Pertiwi, Ika Pratiwi, Ita Ritman, Nahlionny Sarah, Maya Zelfi, Elfina Rahmania