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All Journal Jurnal Reka Lingkungan JPSE (Journal of Physical Science and Engineering) Journal of Environment and Sustainability JCES (Journal of Character Education Society) Specta Journal of Technology Jurnal EnviScience (Environment Science) Jurnal Keuangan dan Akuntansi Terapan (KUAT) PREVENIRE: Journal of Multidisciplinary Science Compact: Spatial Development Journal PIKAT Frontier Advances in Applied Science and Engineering
Riza Hudayarizka
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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 Public Health Social Sciences Transportation Other

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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.
POTENSI BIOMASSA KULIT SINGKONG DAN LUMPUR IPAL SENTRA INDUSTRI KECIL SOMBER (SIKS) SEBAGAI BRIKET Febrianti, Nia; Selvia Maharani; Riza Hudayarizka
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.v9i1.1185

Abstract

Sentra Industri Kecil Somber (SIKS) produces sludge waste from the Wastewater Treatment Plant (WWTP). Sludge can be utilized as a renewable energy source, for example by processing it into briquettes. This research uses a mixture of cassava peel biomass to increase the calorific value of briquettes and uses tapioca starch adhesive. The purpose of this research is to analyze the characteristics of briquettes produced by WWTP sludge with a mixture of cassava peel and analyze the optimum composition variation of WWTP sludge and cassava peel waste on briquette characteristics with the composition of WWTP sludge, cassava peel, and adhesive of (10:83:7); (15:78:7); (20:73:7); (25:68:7); (30:63:7). The parameters tested are moisture content, ash content, volatile matter, fixed carbon and calorific value based on ASTM, after which data processing is carried out with the help of software, namely graphs with Sigma Plot and Microsoft Excel software to facilitate and minimize errors or human errors. The water content of briquettes A, B, C, D, E was 4.2%, 4.8%, 5.4%, 5.7%, 5.9%. Ash content 12.8%, 13.7%, 14.5%, 15.6%, 16.8%. Volatile matter 12.2%, 14.3%, 15.2%, 15.9%, 16.2%. Fixed Carbon 70.8%, 67.2%, 64.9%, 62.8%, 61.1%. Calorific value 3301.04 cal/gr, 3245.2 cal/gr, 3223.36 cal/gr, 3187.54 cal/gr, 3172.98 cal/gr. The optimum briquette characteristics that meet SNI 6235-2000 are briquette A with a moisture content of 4.2%, volatile matter of 10.2% and those that are close to SNI 6235-2000 are ash content parameters of 12.8%, fixed carbon of 70.8% and calorific value of 3301.04 cal/gr.
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 Amukti, Muhammad Yoga Anggreini, Misa Anifah, Eka Masrifatus Aprillia, Happy Ariani, Ismi Khairunnissa Arisandi Bara, Christofel Fiki Barokatun Hasanah, Barokatun Basransyah Basransyah Basran Basransyah, Basransyah Daffa, Qamara Dini Tri Budiarti Fatimatuz Zahrah, Annisa Fauziyyah, Aisyah Rezki Felecya Sitinjak, Joyce Fransiska, Shella Margaretha Harfadli, Muhammad Ma'arij Kasih, Asha Hanjar Khairunnisa Ariani, Ismi Londong, Roni Martin Sinambela, Johannes Mega Ulimaz Mochammad Purwanto Nabilah, Audrey NIA FEBRIANTI, NIA Nurazkiyah, Syifa Paramita, Fika Rahmi Yorika Raudiah Tuzzahra Putri Rebecca Olfin Liery Any Rozul Faza, Muhammad Saroh Qarini, Ayuk Saud, Muhamad Nur Ibnu Luthfi Selvia Maharani Sholikah, Umi Tiaryo, Christianus Umi Sholikah Umi Sholikah Wahyu Yusariarta Putra Parmita, Ade Wicaksono, Dhany Achmad Wijaya, Siti Iniz Khairunisa Yorika, Rahmi