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All Journal Makara Journal of Technology JURNAL REKAYASA KIMIA & LINGKUNGAN
Muhammad Moniruzzaman, Muhammad
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Acute Toxicitystudy of Choline Based Ionic Liquids Towards Danio rerio fish and the Aggregation Behavior of Their Binary Mixtures Shah, Mansoor Ul Hassan; Nasruddin, Nasruddin; Yusup, Suzana Bt; Moniruzzaman, Muhammad
Makara Journal of Technology Vol. 23, No. 3
Publisher : UI Scholars Hub

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Abstract

Marine oil spills are effectively controlled by chemical dispersants. However, the toxicity associated with it reduce its employment in marine environment. To overcome this limitation, the acute toxicity of choline based ionic liquids was evaluated as a potential low toxic variant for oil spill remediation. Further, the aggregation behavior of the individual as well as their binary mixtures was also evaluated by employing tensiometry technique. The half-lethal concentration, LC50on zebrafish (Danio rerio) of three choline based ionic liquids showed that the studied ionic liquids (ILs) fall in the range of “practically nontoxic” ( 100-1000 mg L-1).Various micellar properties showed that a synergistic interaction existed between all the binary mixtures (β < 0, f1and f2
Characterization of Empty Fruit Bunch Treated with Ionic Liquid Prior to Enzymatic Delignification Financie, Revie; Moniruzzaman, Muhammad; Uemura, Yoshimitsu
Jurnal Rekayasa Kimia & Lingkungan Vol 10, No 4 (2015): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v10i4.3307

Abstract

The technological utility of enzymes for delignification can be increased by using ionic liquid to open more accessible surface area for biomass transformation into bio-based products. The present paper demonstrates application of ionic liquid (IL) [emim][DEP] 1-ethyl-3 methyllimidazolium-diethyl phospate for empty fruit bunch (EFB) pretreatment process followed by enzymatic delignification by using Laccase. It was found that [emim][DEP] increased the performance of the enzyme laccase and henced higher cellulose rich materials, whereas also reduced the lignin content in the EFB. The lowest lignin content obtained from IL-laccase treated EFB was approximately 17.92%, lower than the lignin content in the untreated EFB. Both treated and untreated EFB were characterized in chemical and physical properties by using scanning electron microscope (SEM), fourier transform infrared (FTIR), and thermogravimetric analysis (TGA/DTG) to observe the changes resulted from the pretreatment.
Co-Authors Nasruddin Nasruddin Revie Financie, Revie Shah, Mansoor Ul Hassan Yoshimitsu Uemura, Yoshimitsu Yusup, Suzana Bt