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All Journal Journal of Mechanical Engineering Science and Technology Chemistry Indonesian Journal of Chemical Research Jurnal Teknik
Adisasmito, Sanggono
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Utilization of Tamarind Seeds Extract as a Natural and Sustainable Fabric Dye Istyami, Astri Nur; Arif, Muhammad; Azzindi, Muhammad Ilham; Pratiwi, Meiti; Adisasmito, Sanggono; Damayanti, Nuning Yanti; Bustomi, Agus Tendi Ahmad; Rizkiana, Jenny
Indonesian Journal of Chemical Research Vol 11 No 3 (2024): Edition for January 2024
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.11-ast

Abstract

This research focuses on the use of tannin components in tamarind seed coats as a mordant and natural dye in cotton fabrics. Tannins were extracted from the tamarind seed coat by boiling method and then the tannin content was determined. The tannin extract was then used as a natural mordant with the addition of metallic copper sulfate (CuSO4) mordant. Tannin extract is also used as a dye on fabrics with the addition of sodium sulfate (NaSO4). The color strength of the tannins in the fabric was analyzed using a spectrophotometer from the rinse water. The results showed that the cloth that had been given the mordant had a stronger color strength than the cloth without the mordant. The use of mordant was varied at concentrations of 5, 10, 15, 20, and 25%-owf. The results of the analysis showed the most optimum tannin concentration at 15%-owf. The concentration of tannin used in the coloring process was also varied at concentrations of 5, 10, 15, 20, and 25%-owf. The results of the analysis show that the concentration of tannin used in the dye does not affect the strength of the color, but only affects the brightness of this color.
Karakterisasi Asam Lemak dan Aktivitas Antioksidan Minyak Hasil Ekstraksi Biji Kelor Ayu, Lidya Risang; Aliwarga, Lienda; Adisasmito, Sanggono
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 23 No 1 (2024): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol23no1.568

Abstract

Diversity of plants that are sources of vegetable oil grows abundantly in Indonesia, making Indonesia have potential to become a large vegetable oil-producing country. Moringa plant is one of plants predicted to have new potential as a vegetable oil-producing plant. The seeds of Moringa plant, which contain 35–40% oil, are used for various purposes such as pharmaceutical, cosmetic, and automotive industries. Saturated fatty acids contained oleic acid, palmitic acid, stearic acid, behenic acid, and arachidic acid which are beneficial for health. Moringa seed oil also contains antioxidants, antimicrobials, and vitamins C, E, B1, and B2. Oil extraction from Moringa seeds in this study used mechanical pressing method with moisture content of Moringa seeds 8 and 16% w/w. The pressing temperature varied at 80oC, 100oC, and 120oC. Characterization of fatty acid composition of Moringa seed oil was obtained by fatty acid content of 74.6–79.9% oleic acid, 5.77–7.78% palmitic acid, 4.71–5.48% stearic acid, 4.83–8.71% behenic acid, and 2.76–6.5% arachidic acid. Highest antioxidant activity was obtained at a pressing temperature of 80oC with a moisture content of 8% Moringa seeds, resulting in an IC50 value of 67.4 ppm which is included in compounds with strong antioxidant activity.
Steam Supply Evaluation for Carbon Capture and Storage in a Subcritical Coal-Fired Power Plant Hendrayawan, Veri; Raksajati, Anggit; Adisasmito, Sanggono; Juangsa, Firman Bagja
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 9, No 1 (2025)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v9i12025p291

Abstract

The aim of this study is to analyze the implementation of carbon capture and storage (CCS) in coal-fired power plants (CFPP) in Indonesia by determining the reboiler energy demand through steam source analysis. The study uses a representative 3×330 MW subcritical coal-fired power plant (CFPP), with an emission intensity of 1.02 tCO₂/MWh and flue gas CO₂ concentration of 13.8%. CCS modeling shows the reboiler requires about 2.9×10⁹ kJ/h energy, supplied by steam extracted from the plant’s steam cycle. A steam cycle model was developed to evaluate the impact of steam extraction. Potential tapping points analyzed include main steam, cold reheat, intermediate-pressure (IP) extraction, low-pressure to intermediate-pressure LP-IP crossover, and low-pressure (LP) extraction. Main steam extraction with the highest energy content needs the lowest steam mass flow of 355 t/h but causes the highest energy penalty of 57% because of lost electricity production in HP and IP extraction. Cold reheat extraction requires moderate steam flow of 399 t/h and a penalty of 52% but risks overheating reheater tubes. The LP-IP crossover point needs the highest steam flow 414 t/h, yet achieves the lowest net energy penalty at 33.8% with minimal operational risk, making it the most favorable option for CCS integration.
Co-Authors Ayu, Lidya Risang Azzindi, Muhammad Ilham Bustomi, Agus Tendi Ahmad Firman Bagja Juangsa Hendrayawan, Veri Istyami, Astri Nur Lienda Aliwarga Muhammad Arif Nuning Yanti Damayanti Pratiwi, Meiti Raksajati, Anggit Rizkiana, Jenny