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All Journal Jurnal Teknologi Dan Industri Pangan VALENSI Jurnal Ilmu Lingkungan AL KAUNIYAH Alchemy : Journal of Chemistry Proceeding International Conference on Global Resource Conservation JITRO (Jurnal Ilmiah dan Teknologi Peternakan Tropis) Elkawnie EduChemia: Jurnal Kimia dan Pendidikan ALCHEMY Jurnal Penelitian Kimia Jurnal Kimia Terapan Indonesia Jurnal Riset Sains dan Kimia Terapan Bulletin of Chemical Reaction Engineering & Catalysis al Kimiya : Jurnal Ilmu Kimia dan Terapan
Dede Sukandar
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Sonochemical Assisted Synthesis of Cr-PTC Metal Organic Framework, ZnO, and Fe3O4 Composite and Their Photocatalytic Activity in Methylene Blue Degradation Nurbayti, Siti; Adawiah, Adawiah; Bale, Uly Fitria; Fadhilla, Rizka; Ramadhan, Fitri Nur; Zulys, Agustino; Sukandar, Dede; Saridewi, Nanda; Tulhusna, Latifah
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 2 Year 2024 (August 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20156

Abstract

Methylene blue pollutants can be treated by photocatalytic methods using metal oxide-based semiconductor materials and metal organic framework (MOF). These two materials are often coupled into a composite to improve their physicochemical properties and catalytic activity. This research focuses on the synthesis of composites based on Cr-PTC MOF, ZnO, and Fe3O4 by the sonochemical method. The obtained composites were characterized and tested for catalytic activity in methylene blue pollutant degradation in an aqueous system under acidic conditions (pH = 5). Our investigation shows that the Cr-PTC@Fe3O4 composite possesses the lowest band gap energy of 1.86 eV and achieves the highest photocatalytic activity in methylene blue degradation at solution pH = 5, with a percent degradation of 84.36%. The sonochemical incorporation of Fe3O4 and Cr-PTC MOF is able to fabricate materials in a short time with better photocatalytic activity in degrading methylene blue than the single materials. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Synthesis of Metal-Organic Framework (MOF) Cr-PTC-HIna for Heavy Metal Ion Adsorption Nurhasni, Nurhasni; Adawiah, Adawiah; Wahyudin, Wahyudin; Hadriyani, Rizka; Andriyani, Leni; Fadhilla, Rizkha; Zulys, Agustino; Sukandar, Dede
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 1 Year 2024 (April 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20069

Abstract

As an adsorbent material, Metal-Organic Framework (MOF) provides several advantages, such as large surface area and pore volume, as well as stability in aqueous systems both in acidic, basic, and neutral conditions. The research successfully made a metal organic framework (MOF) from chromium and perylene that was modulated by isonicotinic acid. This was done using three different methods: hydrothermal (Cr-PTC-HIna-HT), solvothermal (Cr-PTC-HIna-ST), and sonochemical (Cr-PTC-HIna-SC). The Cr-PTC-HIna-SC showed the greatest Pb2+ ion adsorption capacity. The optimum adsorption of Pb2+ ions occurred at 150 ppm Pb2+ ion concentration, pH 5, 90 minutes of contact time, and an adsorption capacity of 149.95 mg/g at 35 °C. The dominant adsorption isotherm model is the Langmuir isotherm model with R2 = 0.9867 and follows the pseudo-second-order. The selectivity test showed that Cr-PTC-HIna-SC MOF could adsorb more Cd2+ ions than Pb2+ ions, with 250 mg/g being the best amount.
Isolasi dan Identifikasi Metabolit Sekunder dari Kulit BatangBintangur (CALOPHYLLUM BICOLOR) Sukandar, Dede -; Abbas, Jamillah; Habibah, Nurfitriany; Rudiana, Tarso; Rohman, Saeful
ALCHEMY:Journal of Chemistry Vol 12, No 2 (2024): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v12i2.26634

Abstract

Isolation and identification of secondary metabolite compounds from stem bark of Bintangur (Calophyllum bicolor) have been reported. Isolation was carried out using the maceration method with 70% ethanol solvent and fractionation of the ethanol extract by column chromatography using n-hexane solvent. The n-hexane fraction resulting from column chromatography was subjected to gravity chromatography with the mobile phase n-hexane: ethyl acetate (8:2) producing isolate 1. The results of purification of isolate 1 using fast column chromatography with the mobile phase dichloromethane: methanol (1:1) and a UV light detector at ƛ 254 nm, compound 1 was obtained. Meanwhile, identification of compound 1 was carried out through UV-Vis spectroscopy, FTIR and LCMS analysis. The identification results of compound 1 using UV-Vis spectroscopy showed the presence of an aliphatic ring double bond chromophore (λmax 233.5; 295 nm). FTIR results indicated the presence of vibrations of the OH group (3417 cm-1), CH alkanes (2933; 2864; 1456; 545 cm-1), and C=C alkenes (1618 cm-1). Analysis results using LCMS showed a molecular ion peak at [M]+ m/z = 386.96 at a retention time of 11.6 minutes, indicating a molecular weight of 386 and a molecular formula (C27H46O) that corresponds to a terpenoid compound. Keywords: isolation, identification, terpenoid, bintangur (Calophyllum bicolor) AbstrakIsolasi dan identifikasi senyawa metabolit sekunder dari kulit batang bintangur   (Calophyllum   bicolor)   telah   dilaporkan.  Isolasi dilakukan dengan metode maserasi dengan pelarut etanol 70% dan fraksinasi ekstrak etanol dengan kromatografi kolom menggunakan pelarut n-heksana. Fraksi n-heksana hasil kromatografi kolom dikromatografi grafitasi dengan fase gerak n- heksana : etil asetat (8:2) menghasilkan isolat 1. Hasil pemurnian isolat 1 menggunakan kromatografi kolom cepat dengan fase gerak diklorometana : metanol (1:1) dan  detektor sinar UV pada ƛ 254 nm diperoleh senyawa    1. Sedangkan identifikasi  senyawa 1 dilakukan melalui analisis spektroskopi UV-Vis, FTIR, dan LCMS. Hasil identifikasi senyawa 1 menggunakan spektroskopi UV-Vis  menunjukkan adanya kromofor ikatan rangkap cincin alifatik (λmaks 233,5 nm; 295 nm). Hasil FTIR mengindikasikan adanya vibrasi gugus OH (3417     cm-1), CH alkana (2933; 2864; 1456; 545 cm-1), dan C=C alkena (1618 cm-1). Hasil Analisa menggunskan LCMS menujukkan puncak ion molekul pada [M]+ m/z = 386,96 pada waktu retensi 11,6 menit, menunjukkan berat molekul 386 dan rumus molekul (C27H46O) yang sesuai dengan senyawa terpenoid. Kata kunci: isolasi, elusidasi, terpenoid, bintangur (Calophyllum bicolor)
Synthesis of MgFe2O4 Nanoparticles and its Application for Photodegradation of Methylene Blue Sukandar, Dede; Adawiah, Adawiah; Rohman, Saeful; Fitria, Shella; Saridewi, Nanda; Farishi, Salman; Nurhasni, Nurhasni; Aziz, Isalmi; Azizah, Yulyani Nur
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 4 Year 2024 (December 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20222

Abstract

Methylene blue wastewater from the paper, clothing, and textile industries can adversely affect aquatic ecosystems if improperly treated. One method to treat methylene blue pollutants in sewage is through photocatalysis techniques using magnesium ferrite (MgFe2O4) nanoparticle-based semiconductors. The MgFe2O4 is effective for methylene blue degradation because it is stable in aqueous systems, inexpensive, and has good photocatalytic activity. This study aims to synthesize MgFe2O4 nanoparticles with pumpkin seed extract (Cucurbita moschata) as a capping agent through a hydrothermal method. Characterization results show that MgFe2O4 nanoparticles synthesized with the addition of 3 mL pumpkin seed extract have a crystal size of 3.87 nm, cubic spinel structure, average particle size of 29 nm, and band gap energy value of 1.94 eV. The MgFe2O4 nanoparticles produced optimum degradation efficiency under mercury lamp irradiation with a degradation capacity of 391.98 mg/g at pH 12. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Pemantauan Konsentrasi Radionuklida Cs-137, Co-60, I-131 Serta Kualitas Air Daerah Aliran Sungai Bekasi Sukandar, Dede; Amri, Ghulam Fathul; Dasumiati, Dasumiati; Fauzih, Dewi
Jurnal Ilmu Lingkungan Vol 23, No 1 (2025): January 2025
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.23.1.23-34

Abstract

Radionuklida menjadi sesuatu yang krusial untuk diketahui penyebaran, intensitas radiasi, sumber dan proses yang mempengaruhinya di dalam air. Diantara radionuklida yang menarik perhatian adalah Cs-137, Co-60, I-131. Radionuklida Cs-137 adalah unsur radioaktif yang memiliki sifat mudah terdispersi dalam badan air, sedangkan Co-60 dan I-131 banyak digunakan untuk keperluan rumah sakit khususnya radioterapi. Penelitian ini bertujuan untuk mengetahui konsentrasi radionuklida Cs-137, Co-60, I-131 serta kualitas air di Sungai Bekasi. Analisis karakteristik sifat air dari Sungai Bekasi adalah suhu, pH, dan Total Dissolved Solids (TDS), dan pemekatan. Pengukuran konsentrasi radionuklida Cs-137, Co-60, dan I-131 menggunakan instrumen spektrometer gamma. Hasil penelitian diperoleh konsentrasi radionuklida Cs-137, Co-60, dan I-131 adalah masing-masing berturut-turut: 0,00642 - 0,00428 Bq/L, 0,00713 - 0,01272 Bq/L dan 0,00077 - 0,00584 Bq/L.  Konsentrasi radionuklida Cs-137, Co-60, I-131 masih berada di bawah batas aman (Cs-137 1,2 x 102 Bq/L ,  Co-60 1,4 x 103 Bq/L, I-131 3,0 x 105 Bq/L) yang ditetapkan oleh Peraturan Kepala BAPETEN Nomor 7 Tahun 2013. Pada penentuan kualitas air berdasarkan parameter suhu, TDS, dan pH hasil yang didapatkan masih dibawah batas aman (suhu 25-310C, TDS 1000 mg/L , pH 6-9) dalam kategori kelas II yang ditetapkan oleh Peraturan Pemerintah No 22 Tahun 2021.
Pemantauan Radioaktivitas Lingkungan dari Radionuklida 137Cs dan 60Co pada Buah Belimbing Dewa (Averrhoa carambola L.) di Kota Depok Menggunakan Spektrometer Gamma Sukandar, Dede -
Jurnal Ilmu Lingkungan Vol 23, No 6 (2025): November 2025
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.23.6.%p

Abstract

ABSTRAKPemantauan radioaktivitas lingkungan melalui bahan pangan sangat penting dilakukan untuk meminimalisir terjadinya gangguan kesehatan, karena bahan pangan yang terkontaminasi radionuklida apabila dikonsumsi dan terdistribusi ke jaringan lunak manusia akan menyebabkan resiko kanker. Penelitian ini bertujuan untuk mengetahui kondisi cemaran radionuklida 137Cs dan 60Co pada buah belimbing dewa di Kota Depok. Sampel belimbing dewa dikeringkan dan dimasukkan dalam beaker Marinelli. Konsentrasi radionuklida 137Cs dan 60Co diukur menggunakan spektrometer gamma. Sampel kemudian diabukan pada suhu 500 ℃, dimasukkan dalam wadah vial dan diukur kembali dengan spektrometer gamma untuk dibandingkan dengan analisis sebelumnya. Minimum Detectable Concentration (MDC) alat spektrometer gamma 0,0057 Bq/kg (137Cs) dan 0,0157 Bq/kg (60Co) untuk beaker Marinelli, 0,038 Bq/kg (137Cs) dan 0,080 Bq/kg (60Co) untuk wadah vial. Konsentrasi tertinggi yang dihasilkan dari radionuklida 137Cs pada belimbing dewa dan abu belimbing dewa berada di Kecamatan Pancoran Mas 1,706 ± 0,043 Bq/kg dan 3,5 ± 0,097 Bq/kg, radionuklida 60Co berada di Kecamatan Limo yaitu sebesar 1,245 ± 0,039 Bq/kg dan 4,489 ± 0,161 Bq/kg. Hasil ini masih dibawah ambang batas yang ditetapkan PERMENKES No 1031 Tahun 2011 yaitu 500 Bq/kg untuk 137Cs dan Food and Agriculture Organization (FAO) dan World Health Organization (WHO) Tahun 2005 yaitu 1000 Bq/kg untuk radionuklida 60Co.Kata kunci: Radionuklida, 137Cs, 60Co, belimbing dewa, spectrometer gamma.ABSTRACTMonitoring environmental radioactivity through food is very important to minimize the occurrence of health problems, because food contaminated with radionuclides when consumed and distributed to human soft tissue will cause cancer risk. This study aims to determine the condition of radionuclide contamination of 137Cs and 60Co in Dewa star fruit in Depok City. The star fruit sample was dried and put in the Marinelli beaker. The concentration of 137Cs and 60Co radionuclide was measured using a gamma spectrometer. The sample was then ashed at 500 ℃, put in a vial and re-measured with a gamma spectrometer for comparison with the previous analysis. Minimum Detectable Concentration (MDC) gamma spectrometer 0.0057 Bq/kg (137Cs) and 0.0157 Bq/kg (60Co) for Marinelli beakers, 0.038 Bq/kg (137Cs) and 0.080 Bq/kg (60Co) for vials. The highest concentrations of radionuclide 137Cs in the dewa starfruit and ash of dewa starfruit were in the District of Pancoran Mas 1.706 ± 0.043 Bq/kg and 3.5 ± 0.097 Bq/kg, radionuclide 60Co was in the District of Limo which was 1.245 ± 0.039 Bq/kg and 4.489 ± 0.161 Bq/kg. This result is still below the threshold set by PERMENKES No. 1031 of 2011, which is 500 Bq/kg for radionuclide 137Cs and the Food and Agriculture Organization (FAO) and World Health Organization (WHO) in 2005, which is 1000 Bq/kg for radionuclide 60Co.Keywords: Radionuclide, 137Cs, 60Co, dewa starfruit, gamma spectrometer.
Co-Authors A Sa’duddin A.S. Satyaningtijas Abbas, Jamillah Achmad Tjahja Adawiah Adawiah Adawiah Adawiah adawiah adawiah, adawiah Adeng Hudaya Adeng Hudaya Adid Adep Dwiatmoko Agik Suprayogi Agustino Zulys Ahmad Fathoni Ahmad Tjahja Nugraha, Ahmad Tjahja Ai Faziah Hayati Alfindah Rusanti Amri, Ghulam Fathul Andriyani, Leni Anna Muawanah Anny Sulaswatty Bale, Uly Fitria Chitta Putri Novianti Dasumiati Dasumiati Eka Rizki Amelia Eka Rizki Amelia Eka Rizki Amelia Eka Rizki Amelia Eka Rizki Amelia Eka Rizki Amelia Elda Suci Yala Merru Emi Lestari Emi Lestari Eva Silvia Fadhilla, Rizka Fadhilla, Rizkha Farishi, Salman Fauzan Aulia Fauzih, Dewi Fitria, Shella Fitriyanti Fitriyanti Fuady Hanief Habibah, Nurfitriany Hadriyani, Rizka Hendrawati Hendrawati Hilyatuz Zahroh Hilyatuz Zahroh Ibnu Umarudin Umedi Idzni Qistina Ika Amalia, Ika Ika Restu Purwanti Imam Hamidi Imamah Al Mabrur Imamah Al Mabrur Ira Djajanegara Ira Djajanegara Ira Jayanegara Ira Jayanegara Isalmi Aziz Khilda Fithri Aryani Khoeriyah Khoeriyah La Ode Sumarlin Lailatul Badriyah Lia Pratiwi Melina Hadera Muhamad Zaenudin Nanda Saridewi, Nanda Nani Radiastuti Nani Radiastuti Nani Radiastutu Nina Artanti Nino Rinaldi Nurhasni Nurhasni Nurlaela Nurlaela Rahminiwati, Min Ramadhan, Fitri Nur Rina Ningtiyas Rista Kurnia Dewi Rizky Achmad Fauzi Saeful Rohman Sandra Hermanto Septyani Nurichawati Sihono Sihono Silvester Tursiloadi Siti Nurbayti Siti Nurbayti Siti Nurbayti Sofnie M Chairul Sri Yadial Chalid Sudiyarmanto Sudiyarmanto Syarifah Utami Tarso Rudiana, Tarso Teguh Wahyono Tiah Maharani Tri Heru Prihadi Trilaksono Trilaksono Tsalats Wahyul Husna Tulhusna, Latifah W. Kurniawan Wahyudin Wahyudin Wawan Rustyawan Widad Basalamah Yulyani Nur Azizah