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All Journal PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman JURNAL ATOMIK Jurnal Abdimas Mahakam
Noor Hindryawati
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Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Energy Environmental Science Law, Crime, Criminology & Criminal Justice Public Health Social Sciences

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Journal : Jurnal Kimia Mulawarman

 1 
Pembuatan dan Karakterisasi Deoiled Spent Bleaching Clay (DSBC) terpilar TiO2 dengan penambahan surfaktan rarasaponin” Nauval Dwi Fadillah; Noor Hindryawati; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i1.492

Abstract

Synthesis and characterization TiO2 pillared deoiled spent bleaching clay (DSBC) with rarasaponin as surfactant has been conducted. The activation of DSBC was performed by H2SO4 1N . Characterization had been conducted use X-Ray Diffraction, Flourescent Diffraction, Fourier Transform Infared Spectroscopy and Scaning Electron Microscopy. The results showed cristalinity of TiO2 pillared deoiled spent bleaching clay had increase until 72,5014 % after calcined 500 oC and expected there is Ti on layer based on SEM analysisSynthesis and characterization TiO2 pillared deoiled spent bleaching clay (DSBC) with rarasaponin as surfactant has been conducted. The activation of DSBC was performed by H2SO4 1N . Characterization had been conducted use X-Ray Diffraction, Flourescent Diffraction, Fourier Transform Infared Spectroscopy and Scaning Electron Microscopy. The results showed cristalinity of TiO2 pillared deoiled spent bleaching clay had increase until 72,5014 % after calcined 500 oC and expected there is Ti on layer based on SEM analysisSynthesis and characterization TiO2 pillared deoiled spent bleaching clay (DSBC) with rarasaponin as surfactant has been conducted. The activation of DSBC was performed by H2SO4 1N . Characterization had been conducted use X-Ray Diffraction, Flourescent Diffraction, Fourier Transform Infared Spectroscopy and Scaning Electron Microscopy. The results showed cristalinity of TiO2 pillared deoiled spent bleaching clay had increase until 72,5014 % after calcined 500 oC and expected there is Ti on layer based on SEM analysis.
Rice Husk Silica-Coated Magnetic Particles As A Low Cost Support Material For Crude Pseudomonas Aeruginosa Lipase Immobilization Noor Hindryawati
JURNAL KIMIA MULAWARMAN Vol 14 No 1 (2016)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

In this research, lipase produced from the bacteria Pseudomonas aeruginosa was immobilized on rice husk silica-coated Fe3O4 nanoparticles. The process included the following steps: preparation of magnetic ferrosoferric oxide nanoparticles (NP), coating NP with silica from rice husk ash, activation with glutaraldehyde and covalent immobilization of lipase on the support. The synthesis of the nanoparticle was followed by characterization through FT-IR, XRD, and FE-SEM. The hydrolysis kinetics (using 4-Nitrophenyl palmitate as a substrate) of the immobilized lipase followed Michaelis-Menten model with a Vmax and a Km value of 4.0 mM.s-1 and 0.63 mM, respectively. The immobilized lipase showed better tolerance to extreme temperature and pH compared to free lipase. About 60% of enzyme remained immobilized after ten cycles of reuse and 68.13% of it were stable until 49 days. Thus the silica-coated Fe3O4 nanoparticles appeared to be a potential support material for lipase immobilization applications.
IMPREGNASI DAN KARAKTERISASI K-DEOILED SPENT BLEACHING EARTH (K-DSBE) DENGAN METODE BASAH Arif Dwiki Saputra; Noor Hindryawati; Daniel Daniel
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.504

Abstract

In this research, KOH has been impregnated on Deoiled Spent Bleaching Earth (DSBE) with wet method as a catayst. KOH was impregnated on DSBE of 40 % and 60 % (w/w), then characterized using X-Ray Flourescence (XRF), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), surface area test and alkalinity test. The XRF analysis results showed that potassium oxide composition increased after impregnation. The XRD analysis results show that DSBE belongs to the rectorite type of Na-montmorillonite, whereas the SEM analysis results indicate a morphological change in DSBE. K-DSBE catalysts 40 % and 60 % KOH impregnation have a basicity of 1.46 mmol/g and 1.55 mmol/g with a surface area of ​​23.81 m2/g and 23.56 m2/g.
Co-Authors Abdul Zakaria Ainun Rahmi Ramadhannur Allo, Veliyana Londong Aman Sentosa Panggabean Annuary Laksono Arif Dwiki Saputra Atika Aulia Ahmad Daniel Daniel Dian Eka Chandra Djihan Ryn Pratiwi Edman Tandirerung Erwin Erwin Eva Marliana, Eva Helbianurramdan Helbianurramdan Helbyarti Mawar Sari Hendra Priatna Ika Yekti Liana Sari irfa Ashari Hyahara Irfan Ashari Hiyahara Joni Rahman Muhammad Irvan Mulya Pratama Nauval Dwi Fadillah Nirwanto Pasuluran R.R Dirgarini Julia N R.R Dirgarini Julia Nurlianti Subagyono R.R. Dirgarini Julia N. R.R. Dirgarini N. Rakhmad Rakhmad Renita Anggun Winanti Rinda Anisyah Putri Ritbey Ruga Riyan Octavianus RR Dirgarini Julia Nurlianti Subagyono RR. Dirgarini Julia N. S. Rudi Kartika, Rudi Soerja Koesnarpadi Survina Osalia Br Ginting Teguh Wirawan Widya Rachmah Sari Yusniar Yusniar Ziyyanatul Luthfiyyah