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All Journal JURNAL KIMIA SAINS DAN APLIKASI Eksergi: Chemical Engineering Journal Jurnal Chemurgy Jurnal Teknologi Pertanian Jurnal Ilmiah Teknik Kimia MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering REACTOR : Journal of Research On Chemistry And Engineering Journal of Industrial Community Empowerment SAINTI: Majalah Ilmiah Teknologi Industri Journal Of Chemical Process Engineering Journal of Clean Technology PATRIOTIK: Jurnal Inovasi dan Pemberdayaan Masyarakat Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Yahya, Agung Kurnia
Politeknik ATI Padang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health Social Sciences Other

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Journal : Eksergi: Chemical Engineering Journal

 1 
Metode Modifikasi Membran Polietersulfon (PES) Untuk Meningkatkan Antifouling−Mini Review Modifikasi Membran Enny Nurmalasari; Hasnah Ulia; Apsari Puspita Aini; Agung Kurnia Yahya; Yunita Fahni
Eksergi Vol 20, No 2 (2023)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v20i2.9596

Abstract

Polyethersulfone (PES) is the most common material in various medical and water treatment applications because of its excellent mechanical and thermal properties. The hydrophobicity of polyethersulfone is considered as one of the main drawbacks because the hydrophobic surface causes a high biofouling effect on the membrane, so it has limitations in using Polietersulfon PES membrane technology. Modification of PES membranes is an important topic to be continuously developed to improve the properties of PES membranes. Membrane modifications focus on increasing the hydrophilicity, selectivity, and stability of membranes that are expected to be used commercially. Modifications were made to change the hydrophobic membrane surface into a hydrophilic membrane with good mechanical properties by introducing hydrophilic properties and functional groups to the polyethersulfone membrane surface. This review includes reviews and discussions on modifying PES membranes by mixing, coating, and grafting methods. In particular, adding functional groups to polyethersulfone is a suitable method for introducing hydrophilic properties. The addition of nanomaterials to the surface of the polyethersulfone membrane by mixing, coating, grafting, and combinations significantly increases the surface of the membrane, and all modifications affect the surface roughness of the membrane.
Comparison of Different Types of Bleaching Earth on the Quality of Bleaching Palm Oil (BPO) Khairati, Miftahul; Aini, Apsari Puspita; Nurmalasari, Enny; Yahya, Agung Kurnia
Eksergi Vol 22 No 1 (2025)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i1.13311

Abstract

Bleaching Earth (BE), primarily derived from Bentonite, is widely used in the bleaching process of Crude Palm Oil (CPO). Its efficiency depends on the proportions of SiO₂ and Al₂O₃, which enable effective pigment absorption. This study evaluates the performance of unmodified Bentonite, nano SiO₂-modified Bentonite, and commercial BE in producing Bleached Palm Oil (BPO). The novelty lies in the nano SiO₂ modification, designed to enhance the structural properties and absorption capabilities of Bentonite. Characterization of BE was conducted using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM), while BPO quality was assessed through parameters like moisture content, acid value, Free Fatty Acid (FFA) levels, (Deterioration of Bleachability Index (DOBI), and β-carotene concentration. The results showed that BPO processed with nano SiO₂-modified Bentonite had the lowest β-carotene concentration (443%) and a DOBI value of 1.453, demonstrating superior bleaching performance compared to unmodified and commercial BE. Other parameters, including FFA levels and moisture content, exhibited minimal variation. Color analysis revealed that BPO processed with nano SiO₂-modified Bentonite achieved a comparable color value (1.5/15) to commercial BE. These findings highlight the potential of nano SiO₂-modified bentonite for improving oil quality by reducing FFA and acid value while maintaining optimal moisture content, offering a novel and effective alternative to unmodified bentonite in oil refining.
Co-Authors Achmad Yanuar Maulana Aini , Apsari Puspita Aini, Apsari Puspita Alfiana, Aulia Firda Amyranti, Mutia Anang Baharuddin Sahaq Apsari Puspita Aini Apsari Puspita Aini Apsari Puspita Aini Arlianti, Lily Asyifa, Salwa Eko Supriadi Enny Nurmalasari Ferry Ikhsandy Hana Nikma Ulya Harmiwati N. H Hasnah Ulia Hasnah Ulia Heratri, Agnes Hibrah Hibrah Hibrah Hibrah, Hibrah Khairati, Miftahul Kubikazari, Sinju Kusmiyati Kusmiyati Luthfi , Muhammad Zulfikar Miftahul Khairati Miftahurrahmah Miftahurrahmah Miftahurrahmah, Miftahurrahmah Muhammad Zulfikar Luthfi N. H, Harmiwati N. H. , Harmiwati N. H., Harmiwati N.H, Harmiwati Nofan Hadi Ahmad Nurlatifah, Ismi Nurmalasari , Enny Oktria, Dandi Permadani , Resi Levi Permadani, Resi Levi Puji Rahayu Puji Rahayu Purba, Ari Pranata Primisa Putra, Renold Ramadhan Rahayu , Puji Renold Ramadhan Putra Romigo, Rivaldo Ronald Sukwadi Rosalina Rosalina Rosalina Sahaq, Anang Baharuddin Sanjaya, Nady Siti Maftukhah Sri Kaidah Supriadi, Eko Surya, Dhanu Fransgio Pratama Tosty Maylangi Sitorus Tosty Maylangi Sitorus, Tosty Maylangi Ulia, Hasnah Yunita Fahni