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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan JPSE (Journal of Physical Science and Engineering) Jurnal Rekayasa Hijau Al-Ard: Jurnal Teknik Lingkungan Specta Journal of Technology Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Journal of Social Research PREVENIRE: Journal of Multidisciplinary Science Jurnal Teknologi Lingkungan Serambi Engineering Frontier Advances in Applied Science and Engineering
Ariani, Ismi Khairunnissa
Institut Teknologi Kalimantan
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Social Sciences

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Journal : Specta Journal of Technology

 1 
Analisis Variasi Ukuran Partikel Biomassa Cangkang Kelapa Sawit dan Tandan Kosong Kelapa Sawit (TKKS) terhadap Karakteristik Refuse Derived-Fuel (RDF) Riza Hudayarizka; Wulandari, Agustina; Ariani, Ismi Khairunnissa; Yorika, Rahmi
SPECTA Journal of Technology Vol. 8 No. 3 (2024): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v8i3.1212

Abstract

Energy consumption in Indonesia is still mostly dependent on fossil fuels like coal, leading to their gradual depletion. Therefore, there is a need for environmentally friendly alternative energy sources from biomass waste, such as Refuse Derived-Fuel (RDF). Biomass waste with a high calorific value, like palm kernel shells and empty palm kernel bunches (EFB), is promising as RDF raw material. The size of the particles affects the characteristics of RDF because it impacts the structure and composition of RDF pellets. The tested composition ratios of palm kernel shells, EFB, and adhesives were (90:0:10), (80:10:10), (70:20:10), (60:30:10), and (50:40:10), with particle sizes of 60, 80, and 100 mesh. The RDF characteristics evaluated included moisture content, ash content, volatile matter, fixed carbon, and calorific value. The best RDF composition was found to be 70% palm kernel shells, 20% empty palm kernel bunches, and 10% adhesive at a particle size of 60 mesh, resulting in a moisture content of 5.2%, ash content of 4.64%, volatile matter of 78.89%, fixed carbon of 9.64%, and a calorific value of 4404.32 cal/g. XRD analysis indicates that RDF contains amorphous carbon, silica, and, with the addition of EFB, contributes to the potassium content. SEM analysis shows that larger particle sizes of the raw material form larger pores in RDF compared to smaller particle sizes.
Pemanfaatan Hasil Biokonversi Limbah Organik sebagai Pupuk Organik Cair untuk Pertumbuhan Tanaman Miana Noor Hayati, Rina; Chandra S. Rahendaputri; Ariani, Ismi Khairunnissa; Dellangi, Inri Lestari
SPECTA Journal of Technology Vol. 9 No. 1 (2025): Vol. 9 No. 1 (2025): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i1.1215

Abstract

Efforts to reduce organic waste can be done by recycling waste through utilization into liquid organic fertilizer. One of the efforts to process organic waste can be done by Black Soldier Fly (BSF) maggot. This study was conducted with the aim of seeing the ability of liquid organic fertilizer (POC) produced from leachate from bioconversion carried out by BSF, on the growth of miana plants (Plectranthus scutellarioides). This research is an experiment with qualitative and quantitative data analysis methods. The research was conducted by giving two different POCs. Sample A used 100% commercial organic fertilizer and sample D used POC with a ratio of bioconverted organic fertilizer to commercial liquid fertilizer (3:1). Both samples still could not meet the quality standards of nutrients (NPK) and C-organic. However, the sample with the ratio of bioconverted organic fertilizer and commercial liquid organic fertilizer (3:1) or sample D is the optimum sample, with nutrients (NPK) reaching 0.438% and C-organic reaching 4.58%. The results of the application proved that plants with sample D showed the best growth in terms of the number of leaves that reached 14 strands and plant height reached 13 cm in week 8.
Analisis Pengaruh Variasi Aktivator Kimia Pada Karbon Aktif Kayu Sengon Untuk Pengolahan Filtrasi Air Asam Tambang Riza Hudayarizka; Raudiah Tuzzahra Putri; Mochammad Purwanto; Ismi Khairunnissa Ariani
SPECTA Journal of Technology Vol. 9 No. 2 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i2.8481421

Abstract

Acid mine drainage is one of the major pollutants generated from coal mining activities, characterized by high concentrations of heavy metals such as Fe and Mn and very low pH levels, making it unsuitable for environmental discharge. This study aims to analyze the effect of different chemical activators (NaOH, H₃PO₄, HCl, and no activator) on the effectiveness of activated carbon made from sengon wood in removing contaminants from acid mine drainage. The carbonization process was carried out at high temperatures, followed by chemical activation and application as filtration media. The results showed that unactivated carbon provided the highest TSS removal efficiency at 65.79% and increased the pH to 2.7. However, all variations of activated carbon were ineffective in removing Fe and Mn, likely due to the low initial pH causing protonation of functional groups on the carbon surface, thus reducing their adsorption capacity. This study indicates that while chemical activation influences the characteristics of activated carbon, it is not yet sufficient for optimal removal of heavy metal pollutants.
Co-Authors Agustina Wulandari Ainun Zulfikar Anggie Melinda Handayani Anifah, Eka Masrifatus Basransyah Bayu Nur Abdallah Chandra S. Rahendaputri Dellangi, Inri Lestari Hanifah , Althofina Hawwa Intan Dwi Wahyu Setyo Rini Marita Wulandari Mochammad Purwanto Muhammad Rizqiawan Antul Muhammad Rizqiawan Antul Nia Febrianti Nia Febrianti Noor Hayati, Rina Novemi, Ramsiska Paramita, Fika Raharti, Henny Widya Rahmi Yorika Raudiah Tuzzahra Putri Rebecca Olfin Liery Any Ris Dinda Anggraeny Riza Hudayarizka Sholikah, Umi Sitanggang, Yusril Bahri Sona Putri Siswoyo Wijaya, Siti Iniz Khairunisa Yorika, Rahmi