Article Per Year (5 Year)
p-Index From 2021 - 2026
1.513
P-Index
This Author published in this journals
All Journal Jurnal Bahan Alam Terbarukan Bulletin of Chemical Reaction Engineering & Catalysis Journal of Engineering and Technological Sciences Konversi IJCER (International Journal of Chemistry Education Research) JURNAL VOKASI TEKNOLOGI INDUSTRI (JVTI) ASEAN Journal of Chemical Engineering Journal of Fibers and Polymer Composites Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Bahan Alam Terbarukan
Abdul Halim
Department Of Chemical Engineering, Universitas Internasional Semen Indonesia, Jawa Timur, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Environmental Science Materials Science & Nanotechnology

Published : 11 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : ASEAN Journal of Chemical Engineering

 1 
A Pilot Plant Study of Coal Dryer: Simulation and Experiment Abdul Halim; Afninda Aryuni Widyanti; Celvin Dicky Wahyudi; Fahimah Martak; Eka Luthfi Septiani
ASEAN Journal of Chemical Engineering Vol 22, No 1 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.68745

Abstract

High moisture content in low-range coal causes low calorific value.  To increase the quality, drying by a coal dryer to minimize moisture content is proposed.  Here, a case study of a cyclone-like conical tube coal dryer pilot plant was reported.  Drying heating uses combustion heat generated from volatile matter combustion.  This approach will solve the two problems simultaneously: decreasing moisture content and volatile matter.  The computational fluid dynamic (CFD) approach is used to study fluid dynamics inside the coal dryer using ANSYS Fluent 2020R2 software.  The CFD simulation results represent the phenomenon of coal drying inside the coal dryer validated by the pilot plant experimental result.  The simulation was carried out in steady and unsteady conditions to understand the drying phenomena.  The simulation firmly fits the experimental result, especially in an unsteady state system, indicating that the simulation result is promising for further coal dryer design.  The optimal condition produces a high moisture content reduction of 86.37%, uniform fluid distribution, and significant volatile matter combustion
Fabrication of Cellulose Sponge: Effects of Drying Process and Cellulose Nanofiber Deposition on the Physical Strength Abdul Halim; Yinchao Xu; Toshiharu Enomae
ASEAN Journal of Chemical Engineering Vol 20, No 1 (2020)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.51313

Abstract

Cellulose sponge was fabricated by regenerating cellulose from a xanthate solution. The solution, which contained sodium phosphate particles as a template to create sponge porosity, was dried at 55, 65, 75 and 85 °C for 2, 4, 6, and 8 h. Mass transfer during the initial and last stages of drying was controlled in terms of temperature and concentration differences, respectively. The activation energy and pre-exponential factor of the mass transfer coefficient were -51,841.947 kJ mol-1 and 7.26×109 m-2 h-1, respectively. Regenerated cellulose contained a crystalline type of cellulose II, and the crystallinity was independent of drying conditions. At a low drying temperature (T≤55 °C) and short drying period (t≤2h), the cellulose was unregenerated. At higher temperatures and longer drying periods, no relationship between temperature and physical strength was observed. Cellulose nanofiber (CNF) was added to the xanthate solution at a ratio of 1:100 of CNF to linter cellulose for xanthation; however, this did not affect the physical strength of the cellulose sponge for both mechanically and chemically fabricated CNF.
Co-Authors Afninda Aryuni Widyanti Annie Mufyda Rahmatika, Annie Mufyda Arief Widjaja Audi Sabrina Azmi Alvian Gabriel Azmi Alvian Gabriel Bayu Triwibowo Bramantyo Airlangga Celvin Dicky Wahyudi Cholilie, Irvan Adhin Eka Lutfi Septiani Eka Luthfi Septiani Fahimah Martak Ferian Erlangga Frizky Septian Pramasta Heru Setyawan I Made Arimbawa Janis Wardila Ningsih Kukuh Arief Ramadhan Kurnia Handayani Lusi Ernawati Maktum Muharja Maya Ismayati Muharja, Maktum Nabil Septian Medy Nur Fadhilah Nurul - Widiastuti Pratama, Tcyo Febry Bayu Rizki Fitria Darmayanti Roni Maryana Ruri Agung Wahyuono Setiawan, Wahyu Kamal Setyaningrum, Paramita Siska Nuri Fadilah Surya Iryana Ihsanpuro Toshiharu Enomae Widiyastuti Widiyastuti Winardi, Sugeng Wulandari Kusuma Dewi Yinchao Xu