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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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PEMBUATAN KOMPOSIT Zn-Fe3O4/WO3 DAN APLIKASINYA DALAM PROSES FOTOKATALISIS Ainun Rahmi Ramadhannur; Teguh Wirawan; Noor Hindryawati
PROSIDING SEMINAR KIMIA 2021: SEMINAR NASIONAL KIMIA 2021
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Di dalam makalah ini, di lakukan proses fotokatalisis dengan menggunakan komposit Zn-Fe3O4/WO3 . Material komposit Zn-Fe3O4/WO3 di siapkan dan di karakterisasi menggunakan alat-alat instrumentasi dan aplikasinya untuk mendegradasi fenol secara fotokatalitik telah dilakukan. Tujuan penelitian dilakukan dengan mengamati degradasi larutan metilen biru sebagai model polutan organik di bawah penynaran UV-Vis. Tahapan penelitian ini yaitu yang pertama, pembuatan Fe3O4 dengan metode kopresipitasi, yang kedua pembuatan ZnO dengan metode kopresipitasi dan yang terakhir pembuatan Zn-Fe3O4/WO3 melalui reaksi padat-padat kemudian dikarakterisasi menggunakan X-ray Diffraction (XRD) dan Scanning Electron Microscope (SEM) serta dilanjutkan dengan proses degradasi metilen biru lalu di karakterisasi dengan Spektrofotometri UV-Vis. Hasil karakterisasi XRD menunjukkan adanya struktur komposit Zn-Fe3O4/WO3. Pada analisa SEM dapat diamati pada Zn-Fe3O4/WO3 terdapat ukuran partikel yang tidak seragam dan cenderung menggumpul serta menempel satu sama lain. Hasil optimasi pada degradasi methylene blue berdasarkan variasi jenis katalis yang digunakan menunjukkan bahwa Zn-Fe3O4/WO3 memiliki aktivitas yang lebih baik dibandingkan Fe3O4, ZnO dan WO3. Lalu pada variasi sumber sinar menunjukkan sinar UV-Vis menghasilkan nilai % degradasi lebih baik. Kata Kunci: Komposit Zn-Fe3O4/WO3, Methylene Blue, Fotokatalitik, Degradasi.
PEMBUATAN KATALIS BASA HETEROGEN DARI BATU GAMPING (LIMESTONE) GUNUNG PUGER Rakhmad Rakhmad; Noor Hindryawati; Daniel Daniel
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Telah dilakukan penelitian tentang pembuatan katalis basa heterogen dari batu gamping (limestone). Serbuk batu gamping yang telah dipreparasi, dikalsinasi menggunakan furnace selama 6 jam pada suhu 900 °C. Penentuan kadar kalsium pada serbuk batu gamping menggunakan XRFdan karakterisasi menggunakan XRD dan SEM. Hasil karakterisasi XRD batu gamping sebelum kalsinasi menunjukkan puncak yang muncul pada 2θ = 29,4049°, 31.4176°, 39,4009°, 43.1447°, 47,4886°, 48,5122°, 57.4001°, 58.0733° dan 60.9857° menunjukkan bahwa mineral yang terkandung dalam sampel batu gamping berupa CaCO3 termasuk jenis calcite dengan system kristal rhombohedral. Mineral calcite batu gamping ini dapat dikalsinasi dengan nilai kristalinitas 99,6978 %dan setelah dikalsinasi pada suhu 900 °C selama 6 jam. Serbuk batu gamping yang telah dikalsinasi berjenis portlandite berupa Ca(OH)2 yang muncul pada puncak 18.0073°, 28.6709°, 34.1013°, 47.1200°, 50.8120°, 54.3565°, 62.6319° dan 64.2314°. Serbuk batu gamping yang telah dikalsinasi memiliki nilai kristalinitas sebesar 96,4945 %. Hasil karakterisasi SEM pada batu gamping sebelum dikalsinasi memiliki ukuran partikel bervariasi, terdapat ukuran bervariasi yang tidak merata yang menumpuk berwarna putih yang cenderung lebih kecil yang menyebabkan nilai kristalinitasnya tinggi sebagai mineral calcite. Citra uji SEM batu gamping setelah dikalsinasi pada suhu 900 °C selama 6 jam terjadi perubahan ukuran partikel yang membesar dan lebih seragam. Hal ini ditunjukkan oleh partikel berwarna putih. Uji kebasaan katalis dengan metode Hammett indicator pada indikator pp rentang kebasaan katalis pada rentang 8,6<H_<15 dan uji dengan metode benzoic acid titration menunjukkan nilai kebasaan katalis CaO dari batu gamping sebesar 1,7372 mmol/gr. Kata kunci: Batu gamping, katalis basa heterogen, CaCO3, calcite, portlandite
SINTESIS KOMPOSIT TiO2/WO3/SiO2 MENGGUNAKAN ABU SEKAM PADI SEBAGAI SUMBER SILIKA Abdul Zakaria; Noor Hindryawati; R.R Dirgarini Julia N
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Telah dilakukan penelitian tentang sintesis komposit TiO2/WO3/SiO2 dengan abu sekam padi sebagai sumber silika. Sintesis dilakukan dengan metode sol-gel-hidrotermal dengan perbandingan mol TiO2:WO3 1:0,5. Karakterisasi komposit dilakukan menggunakan X-Ray Diffraction (XRD), SEM-EDX dan Surface Area Analyzer. Hasil XRD menunjukkan terdapat SiO2 quartz dan cristobalite, TiO2 rutile dan WO3 monoklinik. Analisa SEM menunjukkan komposit memiliki morfologi permukaan yang tidak seragam. Hasil EDX menunjukkan terdapat atom Ti, W, Si dan O yang menandakan adanya TiO2, WO3 dan SiO2 . Hasil analisa Surface Area Analyzer menunjukkan luas permukaan komposit sebesar 8,80 m2/g. Kata Kunci : Komposit, Sol-gel-hidrotermal, TiO2/WO3/SiO2.
PEMBUATAN DAN KARAKTERISASI SULFONAT TERIMPREGNASI PADA SILIKA DARI ABU SEKAM PADI (RICE HUSK ASH) Nirwanto Pasuluran; Erwin Erwin; Noor Hindryawati
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Preparation of sulfonate silica as acid catalyshas been done with rice husk ash material using impregnation method. The process of making the catalyst was conducted on the extraction and impregnation. The results of the study were characterized using FT-IR spectrophotometer and SEM. Based on the FT-IR resultsthere is vibration from the group S=O at a wavelength of 1069.73 cm-1 is and pores on the surface of the silica filled by molecules of –SO3H Keywords: Silica,Rice Husk Ash, Impregnation
ANALISIS KADAR LOGAM Pb, Mn DAN KANDUNGAN PROTEIN PADA DAGING UDANG WINDU (Penaeus sp.) YANG DIAMBIL DI PERAIRAN SUNGAI DONDANG KECAMATAN MUARA JAWA Riyan Octavianus; Rudi Kartika; Noor Hindryawati
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Research on metal concentration of Pb, Mn and protein content in windu shrimp’ meat (penaeus sp.) analysis in Dondang river, kecamatan Muara Jawa have done. This research is aimed to determine the concentration of heavy metal Pb, Mn and concentration of protein inside windu shrimp based by size and different sampling location. Concentration of heavy metal Pb, Mn and protein are correlated using Least Square method. Concentration of heavy metal Pb and Mn are analyzed by using AAS (Atomic Absorption Spectrophotometry) and concentration of protein are analyzed by using Kjeldahl method. Result of this research is the concentration heavy metal Pb and Mn in sampling point 1 in average concentration are 0.556 mg/L and 0.463 mg/L, sampling point 2 are 0.790 mg/L and 0.738 mg/L, sampling point 3 are 0.876 mg/L and 0.905 mg/L. Concentration of protein in windu shrimp in sampling point 1 in average are 23.4928%, sampling point 2 are 28.1701% and sampling point 3 are 29.1622%. Correlation of concentration of heavy metal Pb and Mn to the concentration of protein in windu shrimp (penaeus sp.) with R = 0.791; r = 0.948. Keywords: heavy metal Pb, heavy metal Mn, protein, windu shrimp (penaeus sp).
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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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.
MODIFICATION OF ACTIVATED CARBON FROM SHELLS OF JENGKOL WITH TiO2 FOR PHOTODEGRADATION OF RHODAMINE B Widya Rachmah Sari; Noor Hindryawati; R.R Dirgarini Julia Nurlianti Subagyono
JURNAL ATOMIK Vol 4 No 2 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Modifying activated carbon from jengkol shells with TiO2 to degrade Rhodamine by UV irradiation has been done. Modification of KA-TiO2 photocatalyst using the impregnation method. The photodegradation test of dyes was carried out with several parameters such as the variation of KA-TiO2 catalyst weight and contact time. Photocatalyst characterization using X-ray diffraction (XRD), while for dye concentration using UV-Vis spectrophotometry. Difractogram XRD shows that the activated carbon material after modification with TiO2 metal is characterized by the emergence of typical TiO2 peaks. The results showed that the highest percentage of Rhodamine B degraded by KA-TiO2 was 94.11% with a contact time of 120 minutes and a catalyst weight of 1.5 grams.
Aktivasi Deoiled Spent Bleaching Earth (DSBE) dengan Menggunakan Metode Ultrasonik untuk Mengadsorpsi Ion Logam Pb2+ Helbianurramdan Helbianurramdan; Noor Hindryawati; RR Dirgarini Julia Nurlianti Subagyono
JURNAL ATOMIK Vol 2 No 2 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Spent bleaching earth (SBE) as adsorbent of Pb2+ ion, through oil extraction process and continued by acid activation has been studied, this process assisted by ultrasonic wave in 30, 60 and 90 minutes reaction time. Based on the results analysis of X-Ray Flourescence (XRF), the reaction time of 30, 60 and 90 minutes showed an increase of SiO2 were 37.802 %, 42.374 % and 38,793 %. From the surface area with method methylene blue adsorption showed the surface area of DSBE-A 30, 60 and 90 were 34.3057 m2/g, 36.3375 m2/g and 35.8893 m2/g, respectively. XRD analysis showed the type of DSBE-A 60 was rectorite mineral with chemical compound was Na.Al4(Si,Al)8.O20.(OH)4.H2O and has a crystallinity 53.93%. Optimum conditions of DBSE-A 60 to adsorb Pb2+ ion in contact time was at 80 minutes, pH 3 and 20 ppm of Pb2+ ion concentration with adsorbtion efficiency up to 46.04 % and the optimum capacity of DSBE-A 60 to adsorb Pb2+ ion was 0.9209 mg/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