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All Journal Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Kimia USU
Maya Sarah
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences

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Parameter Biokinetika dari Degradasi Limbah Kol dan Tomat Menggunakan Sistem Bioreaktor Anaerobik Maya Sarah; Erni Misran; Seri Maulina; Ika Pertiwi; Nahlionny Ritman; Isti Madinah Hasibuan; Ihut Parulian
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 Maya Sarah; Ita Pratiwi; Isti Madinah Hasibuan
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.
Analisis Produksi Biogas Terhadap Penambahan Kulit Singkong pada Variasi Campuran Limbah Cair Domestk dan Aquadest Eva Malini Simare mare; Maya Sarah; Amir Husin
Jurnal Teknik Kimia USU Vol. 11 No. 2 (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.v11i2.4997

Abstract

Domestic waste and agricultural food waste in the form of cassava peels have the potential as a source of raw material for making biogas. This research uses domestic waste from Wastewater Treatment Plant (WWTP) Cemara of Perusahaan Daerah Air Minum (PDAM) Tirtanadi, Sumatera Utara Province. The ratio of domestic waste inoculum from WWTP Cemara PDAM Tirtanadi and water in this study was 100:0, 70:30, 60:40, and 50:50 (v/v). Then, for each variation of the ratio, 3 kg of ground cassava peel was added. This study aims to determine the amount of biogas produced by measuring the pressure in a pipe connected to a bioreactor. The process of making biogas uses anaerobic fermentation with a batch system. The parameter tested in this study is the measurement of the Total Suspended Solid (TSS) value, Volatile Solid (VS) value, pH value, and total Chemical Oxygen Demand (COD) value. From the results of the research conducted, it was found that the variation in the ratio of 100:0 found biogas at a pressure of 205.8 Pa with TSS value of 1348 mg/L, VS value of 410 mg/L, pH value of 7.66 and COD value of 1088 mg/L.
Empowerment of Housewives Through Shibori Weaving Skills and Upgrading Knowledge Related to Dyes and Their Wastes Erni Misran; Maya Sarah; Seri Maulina
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 1 (2023): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v8i1.9291

Abstract

LKP Girly Mode is one of the non-formal educational institutions in the field of sewing skills. This LKP personnel has skills in making shibori tie dye weaving, but still has limitations in coloring and advanced techniques. Shibori is one of dyeing textile techniques that produce fabrics with various colors and patterns. On the other hand, there are many housewives who depend their family income only on their husbands and need skills that are useful to improve family welfare. The community service team of USU has provided 1 unit of obras machine and 2 additional units of sewing machine to LKP Girly Mode. The team has also carried out a workshop to improve the skills of 12 housewives around the LKP. They were trained to make patterned fabrics using the shibori tie dye technique which were then sewn to produce pillowcase products. The sewing machines that have been handed over, directly used at the workshop and useful to support the operational activities of partners. The results of the training are expected to improve skills that support the empowerment of housewives. In the workshop, the Team also introduce about dyes and simple handling of its waste. The team then treated the remaining fabric dye solution so that a clear solution was obtained that was safely discharged into the water without polluting the environment.
Co-Authors Amir Husin Eva Malini Simare mare Ihut Parulian Ika Pertiwi Isti Madinah Hasibuan Ita Pratiwi Misran, Erni Nahlionny Ritman Seri Maulina