Noor Hindryawati, Noor
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan alam, Universitas Mulawarman

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PREPARATION OF SPENT BLEACHING EARTH-SUPPORTED CALCIUM FROM LIMESTONE AS CATALYST IN TRANSESTERIFICATION OF WASTE FRYING OIL Hindryawati, Noor; Daniel, Daniel; Erwin, Erwin; Maniam, Gaanty Pragas
Jurnal Bahan Alam Terbarukan Vol 6, No 1 (2017): June 2017 [Nationally Accredited]
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v6i1.9860

Abstract

An investigation was conducted on palm oil refinery waste-spent bleaching earth (POR-SBE), POR-SBE supported by calcium as catalysts for methyl esters production through transesterification process using waste frying oil. The catalysts showed longer lasting activity than the traditional alkali catalysts. The optimum conditions for the process were: Ca-POR-SBE catalyst amount 7 %; methanol to oil molar ratio 12:1; and a reaction duration is 4 h. The process was able to transesterify oil to methyl esters at 96.8 % conversion at 65 °C. The catalysts were easily separated from the reaction mixture and the final product met selected biodiesel fuel properties in accordance with European Standard EN 14214.
VALIDASI METODE RAPID TEST DALAM PENENTUAN TOTAL MOISTURE, ASH CONTENT, CALORIFIC VALUE (AR) PADA BATUBARA TERHADAP STANDAR ISO UKURAN 3 MM PT. KALTIM PRIMA COAL Sari, Ermalia Lintang; Panggabean, Aman Sentosa; Hindryawati, Noor
JURNAL ATOMIK Vol 1 No 2 (2016)
Publisher : Jurusan Kimia FMIPA UNMUL

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Penelitian validasi metode rapid test dalam penentuan total moisture, ash content, calorific value (as received) pada batubara terhadap standar ISO (International Organization for Standardizations) dengan ukuran 3 mm (studi kasus di PT. Kaltim Prima Coal) telah dilakukan. Tujuan penelitian ini adalah mengetahui perbedaan pada total moisture, ash content, calorific value jika dilakukan dalam basis (ar) dan mengetahui hasil jika batubara yang digunakan dalam operasional berukuran 3 mm. Berdasarkan penelitian yang telah dilakukan dengan menggunakan batubara ukuran 3 mm diperoleh hasil pada total moisture dan ash content untuk batubara ini tidak terdapat perbedaan dan dapat digunakan dalam operasional laboratorium, sedangkan pada calorific value terdapat perbedaan pada batubara ini. Dalam penentuan ini harus tetap memperhatikan range varian dari nilai reproducibility pada setiap parameter batubara.
ACTIVATION OF ZEOLITE WITH ULTRASONIC WAVE FOR ADSORPTION RECTIVE YELLOW 86 ON SAMARINDA WASTE WOVEN Ronaldy, Igo Marsat; Hindryawati, Noor; N. S, R. R. Dirgarini Julia
JURNAL ATOMIK Vol 2 No 2 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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The research about activation of natural zeolite with variation concentration HCl for adsorption reactive yellow 86 from waste liquid woven Samarinda has been conducted. The activation of zeolite was prepared with two way, by mechanicalstirring and ultrasonic assisted. From the X-Ray Diffraction (XRD) result showed that natural zeolite activated with ultrasonic (NZA-U) has 38 % composition of SiO2, while natural zeolite activated with mechanical stirring (NZA-MS) is 21 %. Surface area analysis using methylene blue shows for NZA-U is 25 m2/g and 24 m2/g for NZA-MS. The results on adsorption of reactive yellow 86 from waste liquid woven Samarinda using spectrophotometer visible on wavelength 417 nm shows the optimum condition adsorption on time contact60 minutes and concentration HCl 3 M, with percent of adsorption is 56.14 % for NZA-U and 53.93 % for NZA-MS
ANALISIS KADAR LOGAM Pb, Mn dan KANDUNGAN PROTEIN PADA DAGING UDANG WINDU (Penaeus sp.) YANG DIAMBIL DIPERAIRAN SUNGAI DONDANG KECAMATAN MUARA JAWA Octavianus, Riyan; Kartika, Rudi; Hindryawati, Noor
JURNAL ATOMIK Vol 3 No 1 (2018)
Publisher : Jurusan Kimia FMIPA UNMUL

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Research on metal concentration of Pb, Mn and protein content in windu shrimp’s meat (Penaeus sp.) analysis in Dondang river, Muara Jawa have been 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.
ETHANOL PRODUCTION FROM TUBER GANYONG (Canna Edulis Kerr.) BY Saccharomyces cerevisiae WITH THE ADDITION OF Spirulina Sp. Sukanadi, I Putu; Kartika, Rudi; Hindryawati, Noor
JURNAL ATOMIK Vol 2 No 2 (2017)
Publisher : Jurusan Kimia FMIPA UNMUL

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This study demonstates the potential of starch tuber ganyong (Canna edulis Kerr.) as a substance for making ethanol by Saccharomyces cerevisiae with microalgae addition of Spirulina sp. as a source of nutrients in the fermentation process of ethanol has been carried out. The study also aims to determine the amount of nutrient concentration and fermentation time was used to generate the optimum ethanol content. Hydrolysis process by enzymatic is done through a liquification phase with α-amylase and saccharification phase with gluko-amylase. Furthermore the process of fermentation stage with the variation of the time (132 hours, 156 hours, 180 hours and 204 hours) using the yeast Saccharomyces cerevisiae with the addition of Spirulina sp. as a nutrient in the variation of Spirulina sp. concentrations (0,6 % (w/v), 1,2 % (w/v) and 1,8 % (w/v)). The result showed the sugar reducing after of hydrolysis was obtained with amount of 0,527 %, increased from the initial state with amount of 0,351 %. The highest ethanol content be found on the increase nutrient with amount of 1,2 % (w/v) by is time of fermentation to180 hours.
THE INFLUENCE OF Pb (II) ION CONCENTRATION ON PROTEIN CONTENT IN MUSSEL SHELLS (Mactra violacea) IN CONTAMINATED AREA OF TARAKAN ISLAND EAST KALIMANTAN Tanjung, Faisal; Kartika, Rudi; Hindryawati, Noor
JURNAL ATOMIK Vol 3 No 2 (2018)
Publisher : Jurusan Kimia FMIPA UNMUL

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The researched about the correlation level of metal lead (Pb) towards the protein content of mussel shells (Mactra violacea) had been done. This research was taken in the coastal water of Tarakan, North Borneo. The research aimed to know  concentration of ion (Pb) and protein content of mussel shells (Mactra violacea) based on the size and location of the different sampling. Afterwards, the lead (Pb) metal and protein were correlated using Least Square method. Analysis of concentration of Pb ion was performed by using AAS (Atomic Absorption Spectrofotometry) and analysis of protein content using Kjehdal method. From this research, it was found the concentration of Pb ion on point 1 is by an average of 0.7220 mg/L, on point 2 is by an average of 0.7433 mg/L and point 3 is by an average of 0.9208 mg/L. It is also found the content protein of mussel shells (Mactra violacea) on point 1 is by an average of 19,9883%, on point 2 it was found the average of protein content of 21.7714% and point 3 by an average 22.8664%. The correlation concentration of Ion Pb towards protein conten on kerang kepah (Mactra violacea) symbolized as r = 0.8448.
THE MANUFACTURE OF BIODEGRADABLE FILM FROM CEMPEDAK SEED STARCH AND CARBOXY METHYL CELLULOSE WITH THE ADDITION OF GLYCEROL Elean, Samuel; Saleh, Chairul; Hindryawati, Noor
JURNAL ATOMIK Vol 3 No 2 (2018)
Publisher : Jurusan Kimia FMIPA UNMUL

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This research about the manufacture of biodegradable film from cempedak (Artocapus champeden sp.) seed starch and CMC (Carboxy Methyl Cellulose) as well as with the addition of glycerol as a plasticizer has been studied. The purpose of this research are to knowing the concentration of glycerol which have the best of tensile strength, percent elongation, water uptake and biodegradability and knowing the characteristic of biodegradable film produced. In this research the ratio of starch: CMC used is 7:3 while the concentration glycerol is added 10%, 20%, 30% and 40% from the weight of starch. The result of the best concentration of glycerol is glycerol 10%. Glycerol 10% produce a film with 19.62 N/mm2 of tensile strength, 4.98% of percent elongation, 54.33% of water uptake and 39.96% of degradation in 2 days with degradability 24.9 mg/day. Biodegradable film characterized by using FT-IR, analysis result of functional groups showing there are alcohol (O-H) and eter (C-O) groups which indicates that the film is biodegradable.
ACTIVATON AND CHARACTERIZATION OF NATURAL ZEOLITE USING NaOH Sumarni, Sumarni; Hindryawati, Noor; Alimuddin, Alimuddin
JURNAL ATOMIK Vol 3 No 2 (2018)
Publisher : Jurusan Kimia FMIPA UNMUL

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A study on the activation of natural zeolite using NaOH and it’s application for adsorption Rhodamin B from waste liquid woven Samarinda has been conducted. The activation process was conducted by several steps namely, sample preparation and activation stage using NaOH with ultrasonic assisted, then characterized using X-Ray Flourescence (XRF), X-Ray Diffraction (XRD). The XRF analysis result showed that indicates a decrease of SiO2  54.359% in natural zeolite after activation with 6 M NaOH. The XRD analysis result showed the type of natural zeolite activated NaOH was mordenit with chemical compound Ca2.5Na2Al7.Si41O96.24H2O. The optimum condition on the adsorpsi of Rhodamin B  from waste liquid woven Samarinda using  activated zeolite at 6 M NaOH 60 minutes and with persen adsorpsi was 87.487 %  and on the adsorbent weight of 1.25 gram  with persen adsorption 82.311 %.
Validasi Metode Penentuan Benzena, Toluena dan Xilena pada Sampel Udara dan Tanah Menggunakan Kromatografi Gas Panggabean, Aman Sentosa; Widyastuti, Tika; Hindryawati, Noor
ALCHEMY Jurnal Penelitian Kimia Vol 15, No 1 (2019): INPRESS Vol 15, No 1 (2019) Alchemy Jurnal Penelitian Kimia
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.15.1.25522.177-189

Abstract

Penelitian tentang validasi metode penentuan kadar benzena, toluena dan xilena pada sampel udara dan tanah dengan menggunakan kromatografi gas telah dilakukan. Untuk mendapatkan hasil pengukuran yang valid, beberapa parameter penting yang berpengaruh dalam validasi metode telah ditentukan. Beberapa parameter penting yang dilakukan adalah penentuan besaran dasar kromatografi yang meliputi: waktu retensi, kapasitas (k’), faktor selektivitas (α) dan kinerja analitik yang meliputi: penentuan linearitas (r), limit deteksi (LOD), limit kuantitasi (LOQ), presisi dan akurasi. Hasil penelitian penentuan kinerja analitik sangat baik ditunjukkan oleh nilai presisi sebagai % KV < 2/3 nilai KV Horwitz, LOD untuk masing-masing senyawa benzena, toluena dan xilena adalah 0,02 mg/L; 0,59 mg/L dan 0,08 mg/L serta LOQ untuk masing-masing senyawa benzena, toluena dan xilena adalah 0,07 mg/L; 1,99 mg/L dan 0,27 mg/L. Akurasi  metode ini sangat baik ditunjukkan dengan nilai presentase perolehan kembali masing-masing senyawa benzena, toluena dan xilena untuk sampel tanah sebesar 102,61 ± 4,61%; 101,65 ± 7,41%; 102,15 ± 4,15%, dan untuk sampel udara masing-masing senyawa sebesar 101,69 ± 5,77%; 102,08 ± 5,43% dan 98,55 ± 5,11%. Berdasarkan hasil penelitian ini, metode kromatografi gas dapat digunakan dalam penentuan benzena, toluena dan xilena pada sampel udara dan tanah dengan memberikan hasil yang valid.Validation Method on The Determination of Benzene, Toluene and Xylene in Air and Soil Samples Using Gas Chromatography. The present study investigated the method for the determination of the content of benzene, toluene, and xylene in air and soil samples using gas chromatography. To obtain a valid measurement result, several important parameters that influence the method validation have been determined. The several important parameters carried out are the determination of the basic chromatographic such as retention time, capacity factor (k'), selectivity (α) and analytical performance measurement includes: the determination of linearity (r), limit of detection (LOD), limit of quantitation (LOQ), precision and accuracy. The result of analytical performance of the research are well verified, in which the value of precision was % CV < 2/3 CV Horwitz value, LOD for benzene, toluene, and xylene compound were 0.02 mg/L, 0.59 mg/L, 0.08 mg/L, respectively, and LOQ for benzene, toluene and xylene compounds was 0.07 mg/L, 1.99 mg/L and 0.27 mg/L respectively. This method achieved high accuration, indicated by a percentage of recovery value of benzene, toluene, and xylene for soil samples of 102.61 ± 4.61%; 101.65 ± 7.41%; 102.15 ± 4.15%, and for air samples was 101.69 ± 5.77%, 102.08 ± 5.43%, and 98.55 ± 5.11% respectively. Based on the results of this research, the method presented in this study can be applied for the determination of benzene, toluene, and xylene using gas chromatography in air and soil samples with valid results.
MODIFIKASI SPENT BLEACHING EARTH DENGAN WO3 MELALUI PROSES PILARISASI UNTUK UJI FOTODEGRADASI ZAT WARNA METHYLENE BLUE Putri, Rinda Anisyah; Hindryawati, Noor; Julia N. S., RR. Dirgarini
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2018
Publisher : PROSIDING SEMINAR KIMIA

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The Research on modification of Spent Bleaching Earth (SBE) with WO3 has been studied through the process of pillarization for dye photodegradation test of Methylene Blue. This research start from the process of sample preparation, SBE activation using H2SO4, addition of rarasaponin on SBE, pillarization of WO3 on SBE and photodegradation test. DSBE-WO3 was characterized using X-Ray Flouresence (XRF) and X-Ray Diffraction (XRD). XRF analysis of DSBE-WO3 showed an increase in SiO2 composition after activation. The XRD pattern of DSBE-WO3  showed the presence of a WO3  peak. The optimum conditions  for photodegradation of methylene blue with DSBE-WO3 were obtained when the 0,02 g of DSBE-WO3, 60 minutes contact time and 100 ppm concentration of methylene blue were used with percent degradation of 95,18%.  Keywords: Spent Bleaching Earth, pillarization, WO3, Methylene Blue, photodegradation.