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All Journal Indonesian Physical Review Jurnal Biogenerasi Cokroaminoto Journal of Chemical Science Journal of Energy, Material, and Instrumentation Technology
Ismail, Nurmalasari
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Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Other

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Synthesis and Characterization of Activated Carbon from Pattikala Fruit Waste (Etlingera elatior) Rahmawati, Hilda; Ismail, Nurmalasari; Asriyani, Nur; Jufri, Risma
Journal of Energy, Material, and Instrumentation Technology Vol 5 No 4 (2024): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v5i4.280

Abstract

Activated carbon (AC) is an amorphous material with a suitable size pores distribution, high specific surface area, and high surface reactivity. Activated carbon can be produced from biomaterials and can be used as a water filter material, an absorbent for hazardous substances, and as electrodes in supercapacitors. Etlingera elatior or Pattikala fruit waste has lignocellulose content that can potentially be activated carbon material. This study aimed to synthesize Etlingera elatior or Pattikala fruit waste by chemical activation method into activated carbon. Based on the study's results, activated carbon from Pattikala fruit waste has a high purity level of 87.80%, and SEM results show that pores have begun to form in the activated carbon samples produced. This study demonstrates that activated carbon can be produced from Etlingera elatior fruit waste.
STRATEGI PENGEMBANGAN USAHATANI NILAM DI KECAMATAN NUHA KABUPATEN LUWU TIMUR Jusrianto; Khaerati; Rahmawati, Hilda; Ismail, Nurmalasari
Jurnal Biogenerasi Vol. 8 No. 2 (2023): Volume 8 Nomor 2 Artikel Publish Agustus 2023
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/biogenerasi.v8i2.3959

Abstract

This Research aim was to determine the development strategy of patchouli farming system in Nuha Sub-district. The site of this research was purposively selected with consideration that Nuha sub-district is one of the sub-districts existing in Luwu Timur regency that develops patchouli. Twenty eight respondent samples, 15% of population of patchouli farmers, were selected through simple random sampling method in tree villages. Data were analyzed using SWOT. The SWOT analysis revealed that the farming system was in quadrant I position (support the aggressive strategy) with SO strategy (strengths-opportunities). Program proposed to support the strategy are (1) optimizing land resources in efforts to increase production, 2) utilizing the role of farmer groups in order to develop marketing strategies, 3) empowering the farmers to be better in thinking and acting for any activity implementation, to generate profit in order to increase the productivity and to ensure the production continuity of the farming system, and 4) developing superior local seedlings through government support.
ANALISIS KANDUNGAN SENYAWA KIMIA DARI EKSTRAK METANOL DAUN AKAR BULU (Merremia vitifolia) MENGGUNAKAN METODE SPEKTROFOTOMETRI FT-IR WISNU, DWI SANDA; sukarti; Illing, Ilmiati; Nurasia; Hamdani, Ulfa Zakiyah; Ismail, Nurmalasari
Cokroaminoto Journal of Chemical Science Vol. 7 No. 1 (2025): Februari - Juli
Publisher : Universitas Cokroaminoto Palopo

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Abstract

Tujuan dari penelitian ini adalah untuk menganalisis kandungan senyawa kimia dari ekstrak metanol Daun Akar Bulu (Merremia Vitifolia) dengan menentukan gugus fungsi menggunakan FT-IR. Tanaman Akar Bulu yang berasal dari Kabupaten Luwu, Provinsi Sulawesi Selatan, telah digunakan sebagai pengobatan alternatif untuk penyembuhan luka diabetes melitus. Penelitian ini diawali dengan mengekstraksi serbuk Daun Akar Bulu menggunakan metode maserasi dengan pelarut metanol p.a selama 3×24 jam. Ekstrak yang diperoleh disaring dan diuapkan menggunakan rotary evapurator hingga diperoleh ekstrak kental. Analisis FT-IR menunjukkan keberadaan gugus fungsi menunjukkan adanya gugus fungsi OH, CH alifatik, metilen (CH2), metil (CH3), C=C aromatik, C=O, C-N, C-O-C, C-O alkohol dan C-H aromatik. Hasil ini mengidentifikasikan bahwa ekstrak Daun Akar Bulu mengandung senyawa kimia yang berpotensi sebagai agen bioaktif.
OPTIMIZING CIGS SOLAR CELL PERFORMANCE: THE IMPACT OF COUNTER ELECTRODE ON ELECTRODEPOSITION METHODS Rahmawati, Hilda; Ismail, Nurmalasari
Indonesian Physical Review Vol. 7 No. 2 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i2.301

Abstract

Copper Indium Gallium Selenium (CIGS) is a type of solar cell with great potential to be developed to meet increasing energy needs. Electrodeposition is the preferred technique for fabricating CIGS solar cells because it is simple, does not require vacuum equipment, and is low-cost. One factor influencing electrodeposition is the counter electrode, so in this research, CIGS will be fabricated using platinum wire and platinum plate as the counter electrode. Based on the XRD results of CIGS oriented at (112), (211), (220), and (312), the UV-Vis results show that the resulting CIGS has an absorbance peak of 390 nm. CIGS solar cell performance results based on photoresponse produce 0.99 s and 0.45 s when using platinum wire and plate consecutively. Both platinum wire and plate as counter electrodes in electrodeposition can produce CIGS solar cells. However, CIGS with a platinum plate as a counter electrode produces more optimal CIGS performance.
STRATEGI PENGEMBANGAN USAHATANI NILAM DI KECAMATAN NUHA KABUPATEN LUWU TIMUR Jusrianto; Khaerati; Rahmawati, Hilda; Ismail, Nurmalasari
Jurnal Biogenerasi Vol. 8 No. 2 (2023): Volume 8 Nomor 2 Artikel Publish Agustus 2023
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/biogenerasi.v8i2.3959

Abstract

This Research aim was to determine the development strategy of patchouli farming system in Nuha Sub-district. The site of this research was purposively selected with consideration that Nuha sub-district is one of the sub-districts existing in Luwu Timur regency that develops patchouli. Twenty eight respondent samples, 15% of population of patchouli farmers, were selected through simple random sampling method in tree villages. Data were analyzed using SWOT. The SWOT analysis revealed that the farming system was in quadrant I position (support the aggressive strategy) with SO strategy (strengths-opportunities). Program proposed to support the strategy are (1) optimizing land resources in efforts to increase production, 2) utilizing the role of farmer groups in order to develop marketing strategies, 3) empowering the farmers to be better in thinking and acting for any activity implementation, to generate profit in order to increase the productivity and to ensure the production continuity of the farming system, and 4) developing superior local seedlings through government support.
Co-Authors Asriyani, Nur Hamdani, Ulfa Zakiyah Hilda Rahmawati Illing, Ilmiati Jufri, Risma Jusrianto khaerati Nurasia Rahmawati, Hilda Sukarti WISNU, DWI SANDA