Article Per Year (5 Year)
p-Index From 2021 - 2026
2.715
P-Index
This Author published in this journals
All Journal Jurnal Riset Industri Journal Of Chemical Process Engineering (JCPE) Engineering and Technology International Journal (EATIJ) Journal of Biobased Chemicals (JOBC) Jurnal Teknologi Kimia Mineral Majalah Teknik Industri Journal of Community Services in Sustainability Journal Of Chemical Process Engineering Taawun: Jurnal Pengabdian kepada Masyarakat Science Get Journal
Sariwahyuni
Politeknik ATI Makassar
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Other

Published : 19 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : science get journal

 1 
Fabrication of Hydrophobic Graphene-Cellulose Composite Paper Using Rice Husk Ash Silica Sariwahyuni; Herlina Rahim; Hanim Istatik Badi'ah; Andi Haslinah; Mega Fia Lestari
Science Journal Get Press Vol 2 No 4 (2025): October, 2025
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v2i4.233

Abstract

This study presents the fabrication and characterization of a sustainable graphene–cellulose composite paper reinforced with rice husk ash (RHA)–derived amorphous silica. Silica was extracted via alkaline leaching–acid precipitation, yielding a porous, high-purity amorphous phase well-suited for reinforcement. Composite papers were prepared by incorporating varying loadings of graphene nanoplatelets (0.5–2 wt%) and silica (5–15 wt%) into cellulose pulp, followed by ultrasonication, vacuum filtration, and hot pressing. Structural and morphological analyses (FTIR, XRD, SEM) confirmed effective dispersion and strong filler–matrix interactions. The incorporation of graphene and silica significantly enhanced surface hydrophobicity, raising the water contact angle from 62.5° for neat cellulose to 152.7°—indicative of a near-superhydrophobic state. Mechanical testing revealed an optimal formulation (1 wt% graphene + 10 wt% silica) that improved tensile strength by 42% and Young’s modulus by 36% compared to neat cellulose. Higher filler concentrations slightly reduced tensile strength due to filler agglomeration. This work demonstrates a valorization pathway for low-cost agricultural residues to produce eco-friendly composite materials with superior mechanical and surface properties, suitable for applications in packaging, filtration, or protective coatings.
Powerful Biochar: Agricultural Waste for Soil Stabilization in Landslide-Prone Areas Nani Kitti Sihaloho; Sariwahyuni
Science Journal Get Press Vol 3 No 3 (2026): July,2026
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v3i3.709

Abstract

Rainfall-induced landslides on residual soil slopes remain a persistent geohazard in tropical mountainous regions, and conventional chemical stabilizers such as cement and lime raise concerns regarding cost, carbon footprint, and long-term ecological impact. This study investigates the potential of biochar produced from agricultural waste (rice husk and corn cob) as a sustainable soil-stabilizing amendment for slope soils in a landslide-prone area of Padang City, West Sumatra, Indonesia. Biochar was produced through slow pyrolysis at 450 °C and mixed with residual soil at five proportions (0%, 5%, 10%, 15%, and 20% by dry weight). Physical and mechanical properties were evaluated through Atterberg limit tests, standard Proctor compaction, direct shear tests, and falling-head permeability tests. The results indicate that the addition of biochar up to 15% significantly increased cohesion from 18.2 kPa to 34.1 kPa and the internal friction angle from 24.3° to 31.2°, while reducing the plasticity index and the coefficient of permeability. Beyond 15%, mechanical performance declined, indicating an optimum biochar content. These findings suggest that agricultural-waste-derived biochar can serve as an environmentally friendly and cost-effective soil amendment to improve slope stability, offering a dual benefit of agricultural waste management and landslide mitigation.
Co-Authors A. Nur Awalia Abadi, Sakinah Islamiati Achmad Qodim Aksan, Andi Ariatmasanti Amanda Maydisha Ashar Amelia Ayu Kartika Andi Ariatmasanti Aksan Andi Haslinah Astuti Shinta Nuria Dwi Setyorini Fitri Junianti Frabowo Prasetia Ganing, Melani Gyan Prameswara Hanim Istatik Badi'ah Herlina Rahim Herlina Rahim Ibtisamatul Aminah Idi Amin Idi Amin Idi Amin Jaelani, Kaerunnisa Nur Katrina Yanti Tumanan Khulwa, Sitti Mahdiyah Kurniawan LATIFAH Masnawati Masnawati Mega Fia Lestari Misbahuddin Muhammad Azwar Nani Kitti Sihaloho Nur An-nisa Putry Mangarengi Nuria, Astuti Sinta Ratnasari . Ratnasari Ratnasari Ratnasari Ratnasari Ruslan Syafri Setyorini, Dwi St. Nurhayati Jabir Sukriya Buwardah Syafaatullah, Achmad Qodim Syardah Ugra Al Adawiyah Syardah Ugra Al Adawiyah Tumanan, Katrina Yanti Wahidah Yuli Amdia Riski