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All Journal Jurnal Keteknikan Pertanian Tropis dan Biosistem Agroindustrial Technology Journal Jurnal Matematika Integratif Journal Of Chemical Process Engineering
Hanifah, Aisyah
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Analysis of Cellulose and Cellulose Acetate Production Stages from Oil Palm Empty Fruit Bunch (OPEFB) and Its Application to Bioplastics Hanifah, Aisyah; Mardawati, Efri; Rosalinda, S; Nurliasari, Desy; Kastaman, Roni
Journal of Chemical Process Engineering Vol. 7 No. 1 (2022): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jcpe.v7i1.805

Abstract

Oil Palm Empty Fruit Bunch (OPEFB) is a type of solid waste from the palm oil processing industry. The components of OPEFB include cellulose, hemicellulose, and lignin. OPEFB has a large cellulose content, so it possesses the potential to be used as a bioplastic material. The purpose of this research was to examine the stages of the bioplastics' production process and its characterization. The cellulose content of OPEFB as raw material and during the isolation process which includes hydrolysis, delignification, pulping, and bleaching are 39.59%, 56.00%, 59.85%, 61.48%, and 68.20%, respectively. Cellulose isolation produces α-cellulose content of 97.87%. The resulting cellulose acetate has an acetyl content of 25.93%. The bioplastics were then characterized to determine the effect of cellulose acetate, starch, chitosan, and glycerol on the physical and mechanical properties of the plastics. The results of the physical properties characterization include biodegradability, water absorption, and density with values of 78.73%, 38.26%, and 1.2% respectively. The results of the mechanical properties characterization include tensile strength, elongation, and modulus of elasticity with values of 0.729 MPa, 4.13%, and 17.5 MPa, respectively. The functional groups in the bioplastics, which are O-H, C-H, C-O, C=O, and N-H, are produced from the mixing process between cellulose acetate, starch, chitosan, and glycerol.
Optimal Control of Monkeypox Transmission Model with the Effect of Hospitalization Inayaturohmat, Fatuh; Pramesti, Retta Farah; Pratama, Gilar Budi; Cahyani, Nita; Hanifah, Aisyah
Jurnal Matematika Integratif Vol 21, No 1: April 2025
Publisher : Department of Matematics, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jmi.v21.n1.62791.113-122

Abstract

Monkeypox, also known as mpox, is a zoonotic illness caused by the Monkeypox Virus (MPV), which belongs to the Orthopoxvirus genus within the Poxviridae family. According to a WHO report as of September 2023, the virus has spread to numerous non-endemic countries, showing a significant number of cases. The United States reported the highest count, with 4,259 cases. In contrast, Indonesia has reported relatively fewer cases compared to other Southeast Asian nations. Nonetheless, the risk of transmission, particularly through close personal contact, remains a public health concern. This study examined the transmission of monkeypox among human populations using the spread model proposed by previous research. The novelty of this research is the enhancement of the model by introducing hospitalization parameters as a control mechanism, aiming to determine the optimal hospitalization level to minimize the disease's spread. The method used for optimal control is minimum pontryagin principle. The model also consider the asymptomatic and symptomatic infected individuals. There is a transition from asymptomatic to symptomatic individuals. Numerical simulation results show that implementing this control leads to a more rapid decline in the number of symptomatic infected individuals compared to scenarios without control measures.
Isolation and Characterization of Cellulose from Biomass: A Methodological Review: Isolation and Characterization of Cellulose from Biomass: A Methodological Review Hanifah, Aisyah; Sumirat, Riska; Soerya, Sarah Fitri; Aristri, Manggar Arum
Agroindustrial Technology Journal Vol. 9 No. 1 (2025): Agroindustrial Technology Journal [ATJ]
Publisher : Universitas Darussalam Gontor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/atj.v9i1.14568

Abstract

The isolation and characterization of cellulose from biomass have garnered increasing research interest due to cellulose’s pivotal role in supporting sustainable material innovations across various industries. This study presents a comprehensive review of recent advancements in cellulose isolation methods, including chemical, mechanical, and enzymatic techniques, emphasizing their efficiencies in yield and purity. A bibliometric analysis using VOSviewer was also conducted to map research trends, identify leading authors and institutions, and visualize keyword co-occurrence networks from publications between 2015 and early 2025. The bibliometric results revealed three major thematic clusters in cellulose research: extraction and pretreatment technologies, material characterization techniques, and structural property analysis. Publication trends indicated dynamic research developments, particularly a surge in interest following advances in green extraction technologies. Overall, this review highlights the shift towards sustainable cellulose isolation strategies, evaluating the advantages and disadvantages of various methodologies. It provides insights into the strengths and limitations of current techniques, while also outlining potential future directions for research and industrial applications. Keywords: Biomass, Bibliometric Analysis, Cellulose, Characterization, Isolation.
Analisis Penentuan Prioritas Pengelolaan Sub DAS Cikamiri Menggunakan Metode AHP: Analysis of Prioritization of Cikamiri Sub Watershed Management Using AHP Method Soerya, Sarah Fitri; Hanifah, Aisyah
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 2 (2025): August 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkptb.2025.013.02.11

Abstract

Perubahan tutupan lahan di Sub DAS Cikamiri berdampak pada erosi, limpasan permukaan, longsor dan banjir. Akibat dari perubahan penggunaan lahan, Sungai Cikamiri mengalami peningkatan tinggi muka air (TMA) dengan tinggi dari 0.7 m menjadi 1.5 m sehingga mengakibatkan volume air di muara Sungai Cikamiri bertambah dan menyebabkan banjir yang membuat TPT ambruk di tahun 2023 hingga masuk ke ruas jalan. Diperlukan penelitian mengenai kebutuhan pengelolaan lahan yang tepat berdasarkan pengalaman dan keikutsertaan masyarakat pada wilayah Sub DAS Cikamiri sesuai dengan kebutuhan masyarakat dan lingkungan. Penelitian ini bertujuan untuk menentukan pengolaan tutupan lahan daerah aliran sungai menggunakan metode Analytic Hierarchy Process (AHP) untuk menyederhanakan proses penetapan prioritas untuk banyak objek dengan membandingkan beberapa objek referensi, menghindari distorsi dan masalah pembalikan peringkat. Kriteria atau faktor yang mempengaruhi penentuan prioritas pada penelitian ini adalah potensi limpasan permukaan, potensi erosi,  potensi longsor dan potensi banjir.  Sehingga menghasilkan tiga alternatif, yaitu Eksisting tanpa intervensi, rencana tata ruang wilayah dan konservasi tanah dan air. Hasil penelitian menunjukkan prioritas alternatif pengelolaan tutupan lahan Sub DAS Cikamiri konservasi tanah dan air (nilai prevalensi 56.4%) memiliki peringkat prioritas tertinggi yang berpengaruh terhadap kejadian erosi, limpasan permukaan, longsor dan banjir karena diperlukan perbaikan tutupan lahan dan pengoptimalan tutupan lahan yang memiliki potensi ekologis di Sub DAS Cikamiri sehingga bisa optimal, baik dalam sisi ekonomi atau ekologis. Prioitas kedua diikuti oleh alternatif perencanaan tata ruang wilayah pada bidang ekologis (nilai prevalensi 36.2%) yang memiliki potensi peningkatan ekologis dan ekonomi yang baik. Rekomendasi konservasi tanah dan air yang bisa dilakukan di daerah hulu adalah agroforestri, silvikultur dan terasering.
Co-Authors Efri Mardawati Inayaturohmat, Fatuh Manggar Arum Aristri Nita Cahyani Nurliasari, Desy Pramesti, Retta Farah Pratama, Gilar Budi Roni Kastaman Rosalinda, s Soerya, Sarah Fitri Sumirat, Riska