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All Journal International Journal of Applied Power Engineering (IJAPE) Chemistry Indonesian Journal of Chemical Research Jurnal Teknik
Sanggono Adisasmito
Institut Teknologi Bandung
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering 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.
Analysis of CCS implementation in Indonesia’s coal fired power plants, economic optimization, and potential impact on Java-Bali grid for future decarbonization Anggit Raksajati; Sanggono Adisasmito; Veri Hendrayawan
International Journal of Applied Power Engineering (IJAPE) Vol 15, No 2: June 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v15.i2.pp927-941

Abstract

This study aims to evaluate impact of retrofitting carbon capture and storage (CCS) technology on coal fired power plants (CFPP) in Indonesia. Using a representative 3×330 MW CFPP, the integration of CCS increases the levelized cost of electricity (LCoE) to 124 USD/MWh. Key cost components include CO₂ capture (21.7%), energy penalty from steam extraction (18.5%), and CO₂ transport and injection (16.7%). Sensitivity analysis indicates that CCS becomes financially viable under a high carbon cap (0.9 tCO₂/MWh) and a carbon tax of 76 USD/tCO₂. Meanwhile, International carbon markets offer a potential revenue at 75 USD/tCO₂ can fully offset CCS costs. Additionally, CAPEX grants can reduce LCoE to 12.4%, serving to mitigate upfront investment for CCS deployment. Within the Java-Bali grid, CFPP account for 58.8% of the generation mix with 41% aged 10-20 years using predominantly subcritical technology while 28% are over 20 years old and follow natural retirement being replaced by renewable energy. CCS retrofitting is more economically and technically viable for mid aged plants with newer technologies and lower emission intensities, supporting grid stability with limited renewable base load availability. This strategy also serves as a transitional pathway toward long term renewable integration until the LCoE of PV+BESS falls below 50 USD/MWh.
Co-Authors Anggit Raksajati Ayu, Lidya Risang Azzindi, Muhammad Ilham Bustomi, Agus Tendi Ahmad Firman Bagja Juangsa Hendrayawan, Veri Istyami, Astri Nur Lienda Aliwarga Meiti Pratiwi Muhammad Arif Nuning Yanti Damayanti Raksajati, Anggit Rizkiana, Jenny Veri Hendrayawan