The Analysis of Silica From Rice Husks Siam Unus from South Kalimantan

Research on analysis of rice husk content of Siam Unus with various NaOH concentrations (1.0 M; 1.5 M; 2.0 M; 2.5 M; 3.0 M) has been done. This study aims to obtain data on the effect of variations in NaOH concentration on the purity of the silica extract from Siam Unus rice husks and silica characterization of Siam Unus rice husks using Fourier Transform Infra-Red (FTIR) and X-ray fluorescence spectrometry (XRF). The results showed that the combustion of rice husks at 200 °C as optimum temperature for 1 hour followed by combustion at 600 °C for 4 hours produces grayish-white rice husks with a yield is 20.70%. Silica functional group characterization showed that silanol (Si-OH) and siloxane (Si-O-Si) as dominant functional groups. The result of composition characterization using XRF showed that SiO2 as the dominant compound with the highest percentage of SiO2 is 1.5 M NaOH extract at 42.80%.

Download Full-text

SYNTHESIS AND CHARACTERIZATION OF CALCIUM SILICATE FROM RICE HUSK ASH AND SNAIL SHELL

JURNAL NEUTRINO ◽

10.18860/neu.v11i2.6608 ◽

2019 ◽

Vol 11 (2) ◽

pp. 45

Author(s):

Sadang Husain ◽

Ninis Hadi Haryanti ◽

Suryajaya Suryajaya ◽

Antung Permitaria

Keyword(s):

Rice Husk ◽

Calcium Silicate ◽

Rice Husk Ash ◽

Wave Number ◽

X Ray Diffraction ◽

Solid Reaction ◽

Snail Shell ◽

X Ray ◽

Infra Red

Calcium silicate ceramics have been made using natural ingredients such as rice husk and snail shell with solid reaction techniques. The aim of this study to determine the characteristics of calcium silicate that have been sintered at a temperature of 900 °C, 1000 °C, and 1100 °C. Samples were characterized by X-Ray Diffraction (XRD), optical microscopy, and Fourier Transform Infra-Red (FTIR). The results of XRD characterization showed that CaSiO3 (calcium silicate) along with the increase in calcination temperature and quantity was increased due to the increase of temperature of calcination. FTIR analysis showed that the Ca-Si-O bond was formed at wave number ranging from 848 cm-1 and 999 – 1001 cm-1.

Download Full-text

ADSORPTION OF Th-232 AND U-238 BY γ- Al2O3-HUMATE AT SINGLE AND COMPETITIVE SYSTEMS

Indonesian Journal of Chemistry ◽

10.22146/ijc.21618 ◽

2010 ◽

Vol 8 (2) ◽

pp. 163-168

Author(s):

Muzakky Muzakky ◽

Sri Juari Santosa

Keyword(s):

Fourier Transform ◽

Functional Groups ◽

Regression Line ◽

Single System ◽

Competitive System ◽

Competitive Systems ◽

Adsorption Capacities ◽

Infra Red ◽

As Adsorption

The calculation experiments of adsorption capacities of Th-232 and U-238 in γ- Al2O3-humate at single system and competitive with Freundlich method has been done. The purpose of the research is (1) to characterize γ- Al2O3-humat functional groups, (2) to know γ- Al2O3-humat solubility and (3) to predict adsorption capacities of U-238 and of Th-232 at adsorbent γ-Al2O3-humate. The characterization of functional groups γ- Al2O3-humate is done by Fourier Transform Infra red (FTIR) Spectrometry. Based on perception results of functional spectra characteristic of γ-Al2O3-humate is similar with humic substance with decrease at stretching -OH at 3400 - 3300 cm-1, and C=O stretching of COOH spectra, C=C aromatic or hydrogen bond of C=O at 1725-1720 cm-1spectra. The solubility testing of γ-Al2O3-humate indicated that the compound it's effective used as adsorption U-238 and of Th-232 at pH 1 to 4 conditions. At single adsorption system with 1000 mg/L of U-238 or Th-232 feed, 0.001 g up to 0.1 g weight of γ-Al2O3-humate were got for U-238 balanced to 992.15 mg/L and 980.66 mg/L for Th-232. By using regression line curve between ln C and ln x/m, adsorption capacities of U-238 and Th-232 at single system can be calculated as 3.63 mg/g and 2.93 mg/g, respectively, while adsorption capacity of Th-232 was increases to 8.08 mg/g and U-238 decreases to 0.91 mg/g at competitive system. Keywords: U-238, Th-232, adsorption Freundlich, Spectrometry Fourier Transform Infra Red

Download Full-text

Elemental and Infrared Characterization of Contaminants in Second-Hand Cotton Garments From Flea Markets In Valencia City, Bukidnon, Philippines

Jurnal Penelitian Fisika dan Aplikasinya (JPFA) ◽

10.26740/jpfa.v8n1.p10-16 ◽

2018 ◽

Vol 8 (1) ◽

pp. 10

Author(s):

Marilou Auxtero Pedroso Butanas ◽

Bienvenido Masirin Butanas Jr.

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Fourier Transform ◽

Functional Group ◽

X Ray ◽

Cotton Material ◽

Flea Markets ◽

Flea Market ◽

Scanning Electron

The use of Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) characterizations have been indispensable techniques in distinguishing purity of the samples. These techniques give spectra that will be used to analyze the composition, morphology, purity, among others, of the material. One of its interesting applications is to assess elemental and chemical contaminations on second hand clothing. In this study, second hand (Ukay-Ukay) cotton garments from selected flea market sites in Valencia City, Bukidnon, Philippines were examined quantitatively for microbial and chemical contaminations by using FTIR, SEM, and EDX. The FTIR results obtained in both sites showed broad peaks at ~3336 cm-1 attributed to OH functional group, and absorption peaks at 2901.30 cm-1 associated to C-H bond, 1159.70 cm-1, 1107.44 cm-1 and 1053.82 cm-1 attributed to the stretches of CO bond. All of them were characteristics of cotton material. We observed degradation of the cotton material on both sites evident in the decreasing intensity of OH stretching (at peaks around ~3334 cm -1 [site A] and ~3332 cm -1 [site B]) and C-O stretching (around ~1500-1700 cm-1). These were due to the presence of microorganisms such as fungi (e.g. Aspergillus species). The degradation was also observed in the SEM results. Furthermore, peaks related to carboxylate contaminants were observed in both sites around ~1600 – 1800 cm-1 that may be caused by the exposure of the cotton garments in hydrochloric acid (HCl). In general, the characterization results on both sites indicated traces of microorganisms and that the second-hand cotton clothes were contaminated by hazardous chemicals.

Download Full-text

KARAKTERISTIK FOURIER TRANSFORM INFRA RED DAN KEKUATAN BENTUR KOMPOSIT POLIESTER TAK JENUH BERPENGISI ABU SEKAM PADI PUTIH

Jurnal Teknik Kimia USU ◽

10.32734/jtk.v3i1.1497 ◽

2014 ◽

Vol 3 (1) ◽

pp. 23-26

Author(s):

Caroline Oktaviana Hutagalung ◽

Maulida

Keyword(s):

Fourier Transform ◽

Impact Strength ◽

Rice Husk ◽

Rice Husk Ash ◽

Unsaturated Polyester ◽

White Rice ◽

Infra Red ◽

Polyester Composite ◽

Mixing Method ◽

Polyester Composites

This study was aimed to investigate the effect of white rice husk ash as filler in Fourier Transform Infra Red (FTIR) caractheristic and impact strength of polyester composites. The composites were made with open mixing method by mixing unsaturated polyester with white rice husk ash with the composition of each fillers of 5,10, 15, and 20 % (w/w) then added with 1% methyl ethyl ketone peroxide as catalizer. The parameters which was carried on the prepared samples was characteristic of FTIR and impact strength. It was found that impact strength increased at each of composition of fillers white rice husk ash (WRHA). The optimum value of unsaturated polyester composite filled WRHA are 7031 J/m2 and 8297,333 J/m2 for particle size maximum 100 and 250 mesh.

Download Full-text

Karakteristik Struktur Mikro Komposit Aspal Silika Sekam Padi Dengan Variasi Komposisi (20%:80%, 15%:85% dan 10%:90%)

Journal of Energy, Material, and Instrumentation Technology ◽

10.23960/jemit.v1i2.23 ◽

2020 ◽

Vol 1 (2) ◽

pp. 58-63

Author(s):

Qori Sari Dewi ◽

◽

Simon Sembiring ◽

Syafriadi Syafriadi ◽

Ediman Ginting ◽

...

Keyword(s):

Rice Husk ◽

Sol Gel ◽

Synthesis And Characterization ◽

Rice Husks ◽

X Ray Diffraction ◽

X Ray ◽

Average Grain Size ◽

Materials Used ◽

Silica Synthesis

Synthesis and characterization of rice husk and asphalt silica composites with various compositions have been carried out 20%: 80%, 15%: 85% and 10%: 90%. Silica synthesis from rice husk wa carried out using the sol-gel method. The materials used are rice husks, solid asphalt, distilled water, gasoline, NaOH and HNO3. This research was conducted of variations in the composition the effect of silica and asphalt on the microstructure and structure of the sample. The characterization results of Scanning Electron Microscopy and Energy Dispersive Spectroscopy (SEM-EDS) on the surface of silica asphalt composites in the form of erratic clots and cracks on the surface of the sample with an average grain size of 3.483 µm, 8,127 µm, and 7,192 µm. The analysis EDS results in the elements content contained in the sample elements of carbon (C), silicon (Si), oxygen (O), a little element of sulfur (S) and aluminum (Al). Then, the results of the X-Ray Diffraction (XRD) characterization obtained the structure of amorphous silica and amorphous carbon.

Download Full-text

Preparation and Characterization of PP-g -GMS -St For PP/O-MMT Composite Materials

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.1143 ◽

2011 ◽

Vol 239-242 ◽

pp. 1143-1148

Author(s):

Shao Hui Wang ◽

Shao Ming Yang

Keyword(s):

Fourier Transform ◽

Electron Microscope ◽

Impact Strength ◽

Functional Group ◽

Nanocomposite Materials ◽

X Ray Diffraction ◽

Glyceryl Monostearate ◽

X Ray ◽

Transmission Electron

A new compatibilizer with polypropylene as matrix, Glyceryl monostearate (GMS) and styrene(St) as functional group was prepared, and its effect on the properties of polypropylene(PP)/montmorillonite(MMT) nanocomposites was investigated. Fourier transform infrared spectroscopy results showed that the GMS and St monomers had successfully been grafted on the backbone of PP. The characterization results of X-ray diffraction(XRD) pointed out the crystallite size perpendicular to the crystal plane in PP/ compatibilizer / MMT nanocomposites was smaller than that of PP. Through detecting of transmission electron microscope(TEM), it can be found that the new compatibilizer will improve the dispersibility of MMT in PP matrix. At last, the mechanic properties of PP/MMT nanocomposite materials get determination, the mechanical strength especially impact strength had a obvious progress when O-MMT was added, and its maximal value impact strength appears in the 3% montmorillonite and 20% compatibilizer.

Download Full-text

PENGARUH VARIASI TEMPERATUR KALSINASI TERHADAP BARIUM M-HEKSAFERIT DIDOPING Zn MENGGUNAKAN FOURIER TRANSFORM INFRA RED

JURNAL PIJAR MIPA ◽

10.29303/jpm.v10i1.9 ◽

2015 ◽

Vol 10 (1) ◽

Author(s):

Aris Doyan ◽

Ilham Halik ◽

Susilawati Susilawati

Keyword(s):

Magnetic Material ◽

Fourier Transform ◽

Functional Groups ◽

Functional Group ◽

Powder Sample ◽

Wave Number ◽

Synthesis Process ◽

Infra Red ◽

Test Result ◽

Brown Powder

Abstrak: Barium M-heksaferit (BaM) merupakan bahan magnet permanen yang tergolong hardmagnetic tetapi tidak sesuai untuk beberapa aplikasi, sehingga perlu dilakukan rekayasa untuk menurunkan sifat kemagnetannya menjadi softmagnetic. Penelitian ini bertujuan untuk mengetahui pengaruh temperatur kalsinasi terhadap barium M-heksaferit didoping Zn menggunakan pengukuran FTIR. Proses sintesis barium M-heksaferit menggunakan metode kopresipitasi dengan memvariasikan konsentrasi dopannya 0,0; 0,3; 0,6; dan 0,9 serta memvariasikan temperatur kalsinasi 80oC, 400oC, 600oC dan 800oC. Setelah melakukan proses sintesis selanjutnya dilakukan pengujian sampel menggunakan FTIR (Fourier Transform Infra Red). Penelitian ini telah berhasil melakukan sintesis dengan hasil berupa serbuk barium M-heksaferit berwarna coklat muda hingga coklat tua. Berdasarkan hasil pengujian FTIR didapatkan puncak-puncak pada bilangan gelombang 3447cm-1, 2345cm-1, 1615cm-1, 530cm-1, 470cm-1 masing-masing mengindikasikan adanya gugus fungsi O-H, Ba-O, Fe-O dan Zn-O pada sampel. Puncak yang timbul pada ikatan O-H semakin mengecil menandakan bahwa ikatan pada gugus fungsi tersebut semakin melemah atau bahkan hilang. Hasil pengujian FTIR tersebut menyatakan bahwa temperatur kalsinasi sangat berpengaruh pada proses sintesis BaM. Semakin tinggi temperatur kalsinasi, bahan pengotor seperti air dan CO pada barium M-heksaferit semakin berkurang, ini menunjukkan barium M-heksaferit yang dihasilkan dapat digunakan sebagai bahan softmagnetic.Kata Kunci: Barium M-Heksaferite, sintesis, kopresipitasi, magnet, FTIR Abstract: Barium M-hexaferrite (BaM) is a permanent magnetic material which is relatively hardmagnetic but it is not appropriate for some applications that need to be engineered to degrade the nature of magnetism to be softmagnetic. This study aims to determine the effect of calcinations temperature on Zn doped BaM using FTIR measurements. Synthesis of BaM using coprecipitation method by varying the concentrate of dopan 0,0; 0,3; 0,6; dan 0,9 and varying the calcinations temperature 80oC, 400oC, 600oC dan 800oC. After synthesis of BaM and than the samples were studied using FTIR (Fourier Transform Infra Red). This study has success to synthesis of BaM and the product is a brown powder. Based on the test result of FTIR has been obtained peaks in wave number 3447cm-1, 2345cm-1, 1615cm-1, 530cm-1, 470cm-1 indicated a functional group O-H, Ba-O, Fe-O dan Zn-O on the powder sample. The peak on O-H shrinking indicates that the bond of functional groups are weakened or even disappear.The result of FTIR said that calcinations temperature has effect to BaM synthesis process. It is found that water and CO decrease with increase in calcinations temperature, it is showed the product BaM can be used to softmagnetic.Key Words : Barium M-Hexaferrites, synthesis, coprecipitasi, magnet, FTIR

Download Full-text

Characterization of Photo Biocomposites for Application in Biomedical Materials

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.896.327 ◽

2014 ◽

Vol 896 ◽

pp. 327-330

Author(s):

Joko Triyono ◽

Alva Edy Tontowi ◽

Widowati Siswomihardjo ◽

Rochmadi

Keyword(s):

Fourier Transform ◽

Blue Light ◽

Coupling Agent ◽

Material Characterization ◽

X Ray Diffraction ◽

Biomedical Materials ◽

X Ray ◽

Magnetic Stirrer ◽

Infra Red

The purpose of this study was to perform material characterization of photo biocomposites materials consists of hydroxyapatite (HA) as a filler, (tri [ethylene glyco dimethacrilate (TEGDMA (Sigma Aldrich)) as a matrix; Camphorquinone (Sigma Aldrich) as a photoinitiator; and shellac as a coupling agent. Four ingredients then made two mixtures. The first mixture was the mixing of TEGDMA and camphorquinone and the second was shellac coated HA. Two of mixtures then were mixed to be one solution and was stirred in magnetic stirrer for 1 hour. The solution was poured into a mold and was activated by visible blue light 410 500 nm for 40 seconds in order to be polimerization processes. Materials were characterized by X-Ray Diffraction (XRD), Fourier Transform Infra-Red (FTIR) and Scanning Elektron Microscope (SEM). The materials structure were dense. This material has potential as an implant material for medical purposes.

Download Full-text

PENGGUNAAN TiO2 PARTIKEL NANO HASIL SINTESIS BERBASIS AIR MENGGUNAKAN METODA SOL-GEL PADA BAHAN KAPAS SEBAGAI APLIKASI UNTUK TEKSTIL ANTI UV

Arena Tekstil ◽

10.31266/at.v28i1.1434 ◽

2013 ◽

Vol 28 (1) ◽

Author(s):

Maya Komalasari ◽

Bambang Sunendar

Keyword(s):

Fourier Transform ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Sol Gel ◽

Crosslinking Agent ◽

X Ray Diffraction ◽

Nano Tio2 ◽

X Ray ◽

Infra Red ◽

Scanning Electron

Partikel nano TiO2 berbasis air dengan pH basa telah berhasil disintesis dengan menggunakan metode sol-gel dan diimobilisasi pada kain kapas dengan menggunakan kitosan sebagai zat pengikat silang. Sintesis dilakukan dengan prekursor TiCl4 pada konsentrasi 0,3 M, 0,5 M dan 1 M, dan menggunakan templat kanji dengan proses kalsinasi pada suhu 500˚C selama 2 jam. Partikel nano TiO2 diaplikasikan ke kain kapas dengan metoda pad-dry-cure dan menggunakan kitosan sebagai crosslinking agent. Berdasarkan hasil Scanning Electron Microscope (SEM),diketahui bahwa morfologi partikel TiO2 berbentuk spherical dengan ukuran nano (kurang dari 100 nm). Karakterisasi X-Ray Diffraction (XRD) menunjukkan adanya tiga tipe struktur kristal utama, yaitu (100), (101) dan (102) dengan fasa kristal yang terbentuk adalah anatase dan rutile. Pada karakterisasi menggunakan SEM terhadap serbuk dari TiO2 yang telah diaplikasikan ke permukaan kain kapas, terlihat adanya imobilisasi partikel nano TiO2 melalui ikatan hidrogen silang dengan kitosan pada kain kapas. Hasil analisa tersebut kemudian dikonfirmasi dengan FTIR (Fourier Transform Infra Red) yang hasilnya memperlihatkan puncak serapan pada bilangan gelombang 3495 cm-1, 2546 cm-1, dan 511 cm-1, yang masing-masing diasumsikan sebagai adanya vibrasi gugus fungsi O-H, N-H dan Ti-O-Ti. Hasil SEM menunjukkan pula bahwa kristal nano yang terbentuk diantaranya adalah fasa rutile , yang berdasarkan literatur terbukti dapatberfungsi sebagai anti UV.

Download Full-text