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All Journal Jurnal Teknik Kimia USU Indonesian Journal of Chemistry Jurnal Abdimas Madani dan Lestari (JAMALI) ASEAN Journal of Chemical Engineering Jurnal Teknik Kimia USU

Taslim

Departemen Teknik Kimia, Fakultas Teknik Universitas Sumatera Utara

Author-ID : 4065419

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Other

Published : 17 Documents Claim Missing Document

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Title

Gas Holdup and Gas-Liquid Mass Transfer Investigations in an Oscillatory Flow in a Baffled Column Taslim Taslim; Mohd Sobri Takriff
ASEAN Journal of Chemical Engineering Vol 2, No 1 (2002)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Gas holdup and gas-liquid mass transfer were investigated in a vertical baffled column. Pure carbon dioxide (C02) was used as the dispersed phase and tap water was used as the continuous phase. Gas holdup and mass transfer rate of C02 were measured under semi-batch condition, while the liquid phase was measured in batch mode. Gas holdup was estimated as the volume fraction of the gas in the two-phase mixture in the column. Mass transfer was expressed in terms of the liquid-side volumetric mass transfer coefficient (kLa). The effects of oscillation frequency, oscillation amplitude and gas flow rate on gas holdup andmass transfer were also determined. The results showed that a significant increase in gas holdup and mass transfer could be achieved in an oscillatory baffled column compared to a bubble column. Gas holdup and mass transfer were correlated as a function of power density and superficial gas velocity. Keywords: gas holdup, mass transfer coefficient, power density, superficial gas velocity

Oscillatory Flow Mixer for Pulp Bleaching Taslim Taslim; Mohd Sabri Takriff
ASEAN Journal of Chemical Engineering Vol 2, No 1 (2002)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

This paper reports the results of an investigation on the use of oscillatory baffled column as a mixer for pulp bleaching. Unbleached hardwood kraft pulp was bleached using hydrogen peroxide. Variables studied were oscillation frequency, oscillation amplitude, and pulp consistency. The mixing process was achieved by oscillating pulp suspension in a periodically baffled column at a certain frequency and amplitude. The mixing quality of pulp bleaching was quantified using mixing index. The results showed that mixing quality improved with oscillation frequency and amplitude, but decreased with pulp consistency. This typical device is very promising as a mixer for pulp bleaching.

Gas-LiquidMassTransferin Continuous Oscillatory Flow BaaledColumnina Taslim Taslim; Mahd. Sabri Takriff
ASEAN Journal of Chemical Engineering Vol 4, No 2 (2004)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Gas-liquid mass transfer in continuous oscillatory flow was conducted in a vertical baffled column. Pure carbon dioxide (C02) was used as the dispersed phase and tap water was used as the continuous phase. The mass transfer rate of C02 measured under continuous operation was expressed in terms of the liquid-side volumetric mass transfer coefficient (kLa) and was calculated using a stationary method. The effects of oscillation frequency, oscillation amplitude, and flow rates on mass transfer were also determined. The results showed that a significant increase in mass transfer could be achieved in oscillatory flow in a baffled column comp.:lfed to that in a bubble column. The mass transfer in continuous oscillatory flow in a baffled column was not affected by the liquid flow rate in the range tested. Then, kLQwas correlated as a function of power density and superficial gas velocity.

Co-Authors Al Fath, Muhammad Thoriq Alamsyah, Vandria Alwi Gery Agustan Siregar Arya Josua S Bambang Trisakti Berta, Grace Adela Berutu, Aidha Sekar Cici Novita Sari Cindy Carnella Dalimunthe, Nisaul Fadilah Dian Halimah Batubara Elisabet Aprilyanti Farah Nurul Alifia Farida Hanum Husin, Fahrizal Iriany Irvan Irvan Johan Senjaya M. Thoriq Al Fath Mahd. Sabri Takriff Meilia Meta Rivani Mohd Sabri Takriff Mohd Sobri Takriff Muhammad Hendra S Ginting Muhammad Rizky Agung Nike Taruna Okta Bani Panjaitan, Maychel Yohana Pascalis Novalina Pratama, Deska Rizki Putri Retno Wahyu Ningsih Ranggita Dwi Nindya Affandi Rasyid, Nashfin Nazli Renita Manurung Seri Maulina Sidabutar, Rivaldi Sigit Purwanto Sinabang, Juwita Lestari Sitepu, Rafael Aginta Sri Zahrani Dwi Mauliyah Parinduri Sulastri Dewanti Tjahjono Herawan Toni Rizki Aruan Valentinoh Cuaca Wendi William

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Journal : ASEAN Journal of Chemical Engineering