Article Per Year (5 Year)
p-Index From 2018 - 2023
1.829
P-Index
This Author published in this journals
All Journal EKSAKTA: Journal of Sciences and Data Analysis Alchemy : Journal of Chemistry Prosiding Pendidikan Sains Jurnal Kimia dan Kemasan agriTECH IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Kimia Terapan Indonesia Indonesian Journal of Chemistry Molekul: Jurnal Ilmiah Kimia Molluca Journal of Chemistry Education (MJoCE) Jurnal Kimia dan Kemasan Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Rekayasa Kimia & Lingkungan Jurnal Natural
Nurul Hidayat Aprilita
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Neuroscience Physics

Published : 29 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 29 Documents
Search

 1   2   3 
KAJIAN SPEKTRA FTIR PADA MEMBRAN KOPOLI (EUGENOL-DIVINILBENZENA), CO-EDVB SEBAGAI SENYAWA PEMBAWA UNTUK TRANSPOR FENOL Kiswandono, Agung Abadi; Girsang, Ermi; Pulungan, Ahmad Nasir; Sihombing, Juniva Laila; Siswanta, Dwi; Aprilita, Nurul Hidayat; Santosa, Sri Juari; Hayashita, Takashi
Prosiding SNPS (Seminar Nasional Pendidikan Sains) 2015: Prosiding SNPS (Seminar Nasional Pendidikan Sains)
Publisher : Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (33.496 KB)

Abstract

Telah dilakukan kajian transpor fenol melalui membran berbasis senyawa divinil benzena (DVB)tertaut silang dengan metode PIM.Kajian transpor fenol ini menggunakan chamber sebagai alat transpor yang memisahkan fasa sumber dan fasa penerima. Beberapa evaluasi yang mempengaruhi transpor menggunakan membran PIMtelah dilakukan diantaranya adalah uji stabilitas membran, umur membrandan pemakaian berulang kemudian membran PIM sebelum dan setelah transpor dikarakterisasi menggunakan FTIR. Hasil penelitian menunjukkan bahwa membran PIM yang mengandung senyawa tertaut silang co-EDVB ini, kecepatan pengadukan, jenis agen tertaut silang, konsentrasi plasticizer dan garam NaNO3 berpengaruh terhadap hilangnya komponen penyusun membran (ML loss). Berdasarkan hasil FT-IR, didapatkan bahwa membran yang mengandung senyawa pembawa dienaini, komponen penyusun membran yang hilang didominasi oleh senyawa pembawanya sedangkan indikasi hilangnya komponen penyusun membran dapat terlihat pada hasil FT-IR setelah digunakan untuk transpor, yakni hilangnya puncak ‒OH pada spektra FT-IR.
Aplikasi Limbah Kulit Buah Kakao sebagai Media Fermentasi Asam Laktat untuk Bahan Baku Bioplastik Rambat, Rambat; Aprilita, Nurul Hidayat; Rusdiarso, Bambang
Jurnal Kimia dan Kemasan Vol. 37 No. 2 Oktober 2015
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1630.524 KB) | DOI: 10.24817/jkk.v37i2.1820

Abstract

Penelitian ini bertujuan untuk mempelajari kondisi optimum proses delignifikasi, hidrolisis asam dan enzimatis kulit buah kakao serta pemanfaatannya sebagai media fermentasi asam laktat. Karakterisasi kulit buah kakao dilakukan dengan metode X-Ray Diffraction (XRD), Spektrometri Infra Red(IR) dan Scanning Electron Microscopy(SEM). Konsentrasi glukosa ditentukan secara kuantitatif dengan metode UV-Sulfat, sedangkan total asam laktat dengan metode titrasi asam basa. Hasil penelitian menunjukkan bahwa konsentrasi optimum NaOH pada delignifikasi kulit buah kakao adalah 6%, sedangkan kondisi optimum hidrolisis asam adalah  konsentrasi H2SO4 2,0%, suhu 120°C dan waktu 30 menit. Hasil karakterisasi menunjukkan bahwa proses ini hanya dapat menghidrolisis hemiselulosa dan selulosa amorf. Glukosa hasil hidrolisis asam dapat digunakan sebagai media fermentasi dan menghasilkan asam laktat sebesar 13,27 g/L.
Aplikasi Limbah Kulit Buah Kakao sebagai Media Fermentasi Asam Laktat untuk Bahan Baku Bioplastik Rambat Rambat; Nurul Hidayat Aprilita; Bambang Rusdiarso
Jurnal Kimia dan Kemasan Vol. 37 No. 2 Oktober 2015
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24817/jkk.v37i2.1820

Abstract

Penelitian ini bertujuan untuk mempelajari kondisi optimum proses delignifikasi, hidrolisis asam dan enzimatis kulit buah kakao serta pemanfaatannya sebagai media fermentasi asam laktat. Karakterisasi kulit buah kakao dilakukan dengan metode X-Ray Diffraction (XRD), Spektrometri Infra Red(IR) dan Scanning Electron Microscopy(SEM). Konsentrasi glukosa ditentukan secara kuantitatif dengan metode UV-Sulfat, sedangkan total asam laktat dengan metode titrasi asam basa. Hasil penelitian menunjukkan bahwa konsentrasi optimum NaOH pada delignifikasi kulit buah kakao adalah 6%, sedangkan kondisi optimum hidrolisis asam adalah  konsentrasi H2SO4 2,0%, suhu 120°C dan waktu 30 menit. Hasil karakterisasi menunjukkan bahwa proses ini hanya dapat menghidrolisis hemiselulosa dan selulosa amorf. Glukosa hasil hidrolisis asam dapat digunakan sebagai media fermentasi dan menghasilkan asam laktat sebesar 13,27 g/L.
Aplikasi Limbah Kulit Buah Kakao sebagai Media Fermentasi Asam Laktat untuk Bahan Baku Bioplastik Rambat Rambat; Nurul Hidayat Aprilita; Bambang Rusdiarso
Jurnal Kimia dan Kemasan Vol. 37 No. 2 Oktober 2015
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1630.524 KB) | DOI: 10.24817/jkk.v37i2.1820

Abstract

Penelitian ini bertujuan untuk mempelajari kondisi optimum proses delignifikasi, hidrolisis asam dan enzimatis kulit buah kakao serta pemanfaatannya sebagai media fermentasi asam laktat. Karakterisasi kulit buah kakao dilakukan dengan metode X-Ray Diffraction (XRD), Spektrometri Infra Red(IR) dan Scanning Electron Microscopy(SEM). Konsentrasi glukosa ditentukan secara kuantitatif dengan metode UV-Sulfat, sedangkan total asam laktat dengan metode titrasi asam basa. Hasil penelitian menunjukkan bahwa konsentrasi optimum NaOH pada delignifikasi kulit buah kakao adalah 6%, sedangkan kondisi optimum hidrolisis asam adalah  konsentrasi H2SO4 2,0%, suhu 120°C dan waktu 30 menit. Hasil karakterisasi menunjukkan bahwa proses ini hanya dapat menghidrolisis hemiselulosa dan selulosa amorf. Glukosa hasil hidrolisis asam dapat digunakan sebagai media fermentasi dan menghasilkan asam laktat sebesar 13,27 g/L.
Validasi Metode Analisis Multiresidu Pestisida Organoklor dalam Salak Menggunakan Kromatografi Gas-Detektor Penangkap Elektron Tri Joko Raharjo; Bambang Sutriyanto; Mai Anugrahwati; Nurul Hidayat Aprilita
agriTECH Vol 33, No 2 (2013)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1978.335 KB) | DOI: 10.22146/agritech.9809

Abstract

Validation of methods is a key step in the accreditation process of the method. Validation of organoklor pesticide residues method in snakefruit based on the method recommended by FAO-WHO, conducted in LPPT-UGM reported in this study. Snake fruit was homogenized, extracted using toluene/2-propanol (2:1), cleaned up using activated carbon and Celite 545, followed by analysis using gas chromatography-electron capture detector. Validation covered specificity and selectivity, limits of detection and quantification, linear range, precision and accuracy. Validation results showed good specificity and selectivity shown by the inter-peak chromatogram resolution greater than 1.5. Limits of detection and quantification for heptaklor, endosulfan, dieldrin and p, p-DDT were 0.002 and 0.006, 0.5 and 1.7; 0.0006 and 0.002, as well as 0.014 and 0.047 ppm respectively. The linear range for heptaklor, endosulfan, dieldrin, and p,p-DDT were 0.0017 to 2 ppm, 0.165 to 2 ppm, 0.023 to 2 ppm and 0.229 to 2 ppm, respectively. Precision methods meet the acceptance of Horwitz RSD value less than 12.78% at a concentration of 0.3 ppm. Accuracy is indicated by recovery, for each pesticide in the range of 80-110% acceptance at a concentration of 0.1 ppm. Analysis of organochlorine pesticides in three commercial snakefruit samples showed no pesticide residues at concentrations higher than the detection limit.ASBTRAKValidasi metode merupakan tahap kunci dalam proses akreditasi suatu metode. Validasi metode uji residu pestisida organoklor dalam salak berdasarkan metode yang direkomendasikan FAO-WHO, di LPPT-UGM dilaporkan pada penelitian ini. Buah salak dihomogenisasi, diekstraksi menggunakan toluen/2-propanol (2:1), clean up menggunakan karbon aktif dan Celite 545, dilanjutkan analisis menggunakan kromatografi gas-detektor penangkap elektron. Validasi mencakup spesifisitas dan selektivitas, batas deteksi dan kuantifikasi, range linier, presisi serta akurasi. Hasil validasi menunjukkan spesifisitas dan selektivitas yang baik ditunjukkan dengan resolusi antar puncak kromatogram lebih besar dari 1,5. Batas deteksi dan batas kuantifikasi untuk heptaklor, endosulfan, dieldrin dan p,p-DDT secara berturut-turut adalah 0,002 dan 0,006; 0,5 dan 1,7; 0,0006 dan 0,002; serta 0,014 dan 0,047 ppm. Range linier untuk heptaklor adalah 0,0017-2 ppm, endosulfan 0,165-2 ppm, dieldrin 0,023-2 ppm dan p,p-DDT 0,229-2 ppm. Presisi metode memenuhi batas keberterimaan Horwitz dengan nilai RSD lebih kecil dari 12,78% pada konsentrasi 0,3 ppm. Akurasi ditunjukkan dengan recovery, untuk tiap pestisida masuk dalam rentang keberterimaan 80-110% pada konsentrasi 0,1 ppm. Analisis pestisida organoklorin pada 3 sampel salak komersial menunjukkan tidak adanya residu pestisida dengan konsentrasi lebih tinggi dari batas deteksi.
Utilization of Coal Bottom Ash a Low-Cost Adsorbent for the Removal Acid Red 114 Dye Kuntari Kuntari; Nurul Hidayat Aprilita; Suherman Suherman
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 17, ISSUE 1, February 2017
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol17.iss1.art2

Abstract

A research about adsorption of acid red 114 using coal bottom ash has been conducted. This research was aimed to examine the ability of coal bottom ash in acid red 114 adsorption. Some adsorption parameters i.e. dosage adsorbent, contact time and pH medium were examined in the adsorption processes. The characterization of coal bottom ash was determined using X-Ray Diffraction. Acid red 114 concentration is measured by using UV-Visible spectrophotometer. The adsorption percentage of acid red 114 on the coal bottom ash is 91.2% at pH 1.5; contact time 80 min, acid red 114 concentration 10 mg/L for every 1.5 g bottom ash.
Photoreduction of Cr(VI) Catalyzed by TiO2-Lignin Yuniar Yuniar; Endang Tri Wahyuni; Nurul Hidayat Aprilita
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 2, No 1 (2017): February 2017
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v2.i1.22

Abstract

In order to increase  the  activity of TiO2 photocatalyst, preparation and characterization of TiO2-lignin and its activity on Cr(VI) photoreduction have been carried out. TiO2-lignin was prepared by mixing TiO2 powder with lignin powder  in water-ethanol followed by stirring for 24 h and calcination at 400°C. The crystal structure characterizations were performed by X-ray diffraction (XRD), Lignin was identified using FT-IR whereas photoreduction of Cr(VI) was conducted in a batch reactor. The effect of TiO2 content on TiO2-lignin, irradiation time, weight of photocatalyst and initial concentration of Cr(VI) were studied to obtain effectiveness of photoreduction. Activity of TiO2-lignin on the photoreduction of Cr(VI) showed higher result than TiO2. The increased of TiO2 content in TiO2-lignin result in higher Cr(VI) photoreduction and gave maximum yield at mass ratio of TiO2/lignin 2:1. The irradiation time, weight of TiO2-lignin photocatalyst and initial concentration of Cr(VI) obtained for maximum Cr(VI) photoreduction are 40 h, 50 mg and 1 mg/L respectively which reduced Cr(VI) by 81.44%. Keywords: TiO2-lignin, Cr(VI) ion, photoreduction
PENGARUH BERAT NaOH TERHADAP PEMBENTUKAN ZEOLIT DARI ABU DASAR BATUBARA (BOTTOM ASH) Sunarti Sunarti; Nurul Hidayat Aprilita; Indriana Kartini
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 1 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss1pp23-29

Abstract

The effect weight of NaOH to zeolite formation from coal bottom ash has been investigated. Zeolite was synthesized by fussion with NaOH at 550oC, and variations weight of NaOH respectly: 2.5; 3.5; 4.5; 6.5 g and weight of Coal bottom ash is 2.5 g. The resulted by fussion with NaOH was hydrothermal treatment at 100oC, and 24 hour. The characterization result with IR Spectrophotometer and X-Ray diffraction showed that at variations weigh of NaOH/bottom ash (r) = 1, Na-P zeolite with increased intensity, A zeoliteand faujasite decreased intensity were obtained. The treatment r= 1.4, faujasite with increased intensity, but Na-P and A zeolite decreased intensity were obtained. The treatment r=1.8, sodalit increased intensity, and faujasite decreased intensity were obtained. The Treatment r=2.6, was obtained.
Toxicity test of desorbed chromium from polluted soil around tannery industry in Yogyakarta-Indonesia by using Brassica juncea and Helianthus annuus L. Suherman Suherman; Wina Akmarina; Wulandari Sutiawan; Nurul Hidayat Aprilita; Mudasir Mudasir; Kinichi Morita
Molekul Vol 14, No 2 (2019)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (590.44 KB) | DOI: 10.20884/1.jm.2019.14.2.557

Abstract

Indonesia’s target to be a new industrial country makes a wide chance in the developing of many industrial sectors. The main problem is the disruption of environmental balance due to poorly managed liquid waste released by the industry. Heavy metal such as chromium (Cr) is the typical pollutant generated from tannery industry in Indonesia. Toxicity test of desorbed chromium ions from polluted soil around tannery industry in Yogyakarta-Indonesia by using Brassica junceaand Helianthus annuus L.has been carried out. In this research, soil samples were dividedinto four sample points based on the distances from the waste water point sources. Metal content and some physico-chemical properties including ash content, total organic carbon, and cation exchange capacity were determined in this study. Furthermore, the chromium ions adsorption and desorption from polluted soils were investigated and measured by atomic adsorption spectrophotometry (AAS). Thus, ecotoxicity testsof soil eluates from desorption experiments wereperformed with Brassica junceaand Helianthus annuus L.The resultsshowed that sample III had the highestCr content at916mgkg–1.The adsorption isotherm of Cr ions into soils followed Langmuir isotherm with the highest maximum adsorption capacity value at 14.286 mg kg-1in the sample point IV (unpolluted soil). The optimum desorption of chromium occurred at pH 3. Toxicity test showed that Cr ions had toxic effect to Brassica junceaand Helianthus annuus L.
SINTESIS DAN KARAKTERISASI CROSSLINK KITOSAN DENGAN TRIPOLIFOSFAT pH 3 Mardiyah Kurniasih; Nurul Hidayat Aprilita; Indriana Kartini
Molekul Vol 6, No 1 (2011)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.822 KB) | DOI: 10.20884/1.jm.2011.6.1.86

Abstract

Chitosan is polycationic in acidic media and can interact with negatively charged species such as tripolyphosphate (TPP), which is a nontoxic crosslinking agent. The synthesis of TPP crosslinked chitosan was perfomed by reacting TPP solution (pH 3) with chitosan solution. The aim of this study was to prepared and characterize the crosslinked chitosan-tripolyphosphate samples. Characterization included determination of water and ash degree, moreover crosslinked chitosan-tripolyphosphate powder characterize with FTIR and XRD spectroscopy. The result showed that process efficiency of crosslinked chitosan-tripolyphosphate was 88.49%, with degree of water and ash were 25.70 and 16.72%, respectively.
Co-Authors Adhitasari Suratman Agung Abadi Kiswandono Ahmad Nasir Pulungan An Nissa F. Hayu, An Nissa F. Arifina Febriasari Bambang Rusdiarso Bambang Sutriyanto Bella Mellisani Beti Wulandari Candra Purnawan Christian W Huck Christian W Huck Dhian Nuri Bawani Dwi Siswanta Dwi Siswanta Dwi Siswanta Dwi Siswanta Eko Sri Kunarti Eko Suguharto Endang Tri Wahyuni Endang Tri Wahyuni Endang Tri Wahyuni Endang Tri Wahyuni Firda Ainun Nissa Fitrilia Silvianti Girsang, Ermi Guenther K Bonn Guenther K Bonn Hani Prima Rasydta Hasri Hasri Indriana Kartini Indriana Kartini Indriana Kartini Indriana Kartini Isna Nurhidayati Juniva Laila Sihombing, Juniva Laila Kinichi Morita Kuntari Kuntari Kusuma Putri Suwondo Mai Anugrahwati Marcelina Marcelina Mardiyah Kurniasih Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Muhammad Syahrir Nindya Tri Muliawati Nuryono Nuryono Rambat Rambat Rambat, Rambat Rania Bakry Rania Bakry Roto Roto Roto Roto Rusdiarso, Bambang Sarwendah Ratnawati Hermanto Satriyo Krido Wahono Satriyo Krido Wahono Siti Nurhayati Sofy Herawati Ratnaningtyas Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa Suherman Suherman Suherman, Suherman Sunarti Sunarti Suratno Suratno Suratno Suratno Takashi Hayashita Takashi Hayashita Taufik Abdillah Natsir Tri Joko Raharjo Wina Akmarina Wulandari Sutiawan Yuniar Yuniar