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All Journal Jurnal Matematika & Sains Bulletin of Chemical Reaction Engineering & Catalysis The Journal of Pure and Applied Chemistry Research Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences World Chemical Engineering Journal EduChemia: Jurnal Kimia dan Pendidikan PENELITIAN DAN KARYA ILMIAH PROSIDING SEMINAR NASIONAL CENDEKIAWAN Indonesian Journal of Chemistry Prosiding Seminar Nasional Pakar CHEESA: Chemical Engineering Research Articles JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Tedc Jurnal Penelitian dan Karya Ilmiah Lembaga Penelitian Universitas Trisakti Bulletin of Chemical Reaction Engineering & Catalysis al Kimiya : Jurnal Ilmu Kimia dan Terapan
Deana Wahyuningrum
Institut Teknologi Bandung
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The Synthesis of Glutaraldehyde-modified Chitosan Utilizing MAOS (Microwave Assisted Organic Synthesis) Method as Adsorbent of Pb(II) Ions Contained in Water Sample of Cikapundung River - Bandung Herayati, Herayati; Wahyuningrum, Deana
World Chemical Engineering Journal VOLUME 4 NO. 1 JUNE 2020
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v4i1.10591

Abstract

Indonesia has a vast territory. Approximately 2/3 of Indonesia is water. Indonesia has almost 6% of the world's water resources or approximately 21% of water resources in the Asia Pacific region. Indonesian waters comprise 97.4% seas and 2.6% are rivers, lakes and straits. There are 309 rivers in Indonesia and 49 of them flow through Bandung; one of them is Cikapundung River. Pb(II) ions contained in Cikapundung River has exceeded the quality standard of water river. Therefore, it is necessary to reduce the amount of Pb(II) ions from the river. One of the solutions is by using biodegradable adsorbent, the glutaraldehyde-modified chitosan. Chitosan was obtained from deacetylation of chitin in basic condition. The chitosan was characterized using FTIR showed 85.5% degrees of deacetylation. The other characterization is determination of average molecular mass using Ostwald viscometry method, obtained the average molecular mass of chitosan is 2.7 x 106 g/mol. Furthermore, chitosan was modified by reacting with glutaraldehyde using MAOS (Microwave Assisted Organic Synthesis) method at 80℃ with irradiation power of 100 W for 60 minutes to form glutaraldehyde-modified chitosan with 79% degree of substitution. The synthesized glutaraldehyde-modified chitosan was characterized by FTIR, SEM, SAA and applied as adsorbent of Pb(II) ions. The results showed that the optimum condition of adsorption for 15 mL of Pb(II) solution was achieved at pH 4 using 0.075 grams of adsorbent and 90 minutes of contact time. The adsorption process of Pb(II) ions follows the Langmuir isotherm model and the pseudo-second order kinetics with percent adsorption of Pb(II) ions from the water sample of Cikapundung river is 84% and 50.2%, for sample collected from middle-stream and downstream of river, respectively.
Produksi dan Optimasi Biosurfaktan dari Bakteri Halofilik Chromohalobacter japonicus BK-AB18 Yuliana, Cut; Hertadi, Rukman; Wahyuningrum, Deana
CHEESA: Chemical Engineering Research Articles Vol. 2 No. 2 (2019)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v2i2.5410

Abstract

Perkembangan teknologi bioproses telah mendorong pendekatan ke arah produk surfaktan biologi (biosurfaktan) yang ramah lingkungan. Penelitian ini difokuskan pada optimasi produksi biosurfaktan dengan menggunakan variasi sumber karbon dan nitrogen. Tahap awal penelitian ini dilakukan dengan menguji potensi bakteri Chromohalobacter japonicus BK-AB18 penghasil biosurfaktan dengan menggunakan metode uji hemolisis dimana hasil menunjukkan aktivitas hemolisis yang tinggi dengan ukuran zona bening 3 cm pada media agar darah. Selanjutnya dilakukan produksi pada medium optimal dengan menambahkan 2% variasi sumber karbon terdiri dari minyak zaitun, minyak jagung, minyak kelapa sawit, minyak kacang kedelai dan minyak bunga matahari serta 0,3 % variasi nitrogen terdiri dari urea, NaNO3, NH4Cl, NH2(SO)4 and KNO3. Hasil penelitian menunjukkan produksi biosurfaktan dari Chromohalobacter japonicus BK-AB18 meningkat secara signifikan dengan menggunakan minyak zaitun sebagai sumber karbon dan urea sebagai sumber nitrogen dengan hasil penyebaran minyak 4,8 cm serta aktivitas biosurfaktan dengan nilai tegangan permukaan sebesar 34 dyne/cm, dan hasil uji emulsifikasi sebesar 76%.
Dilute Ionic Liquids Pretreatment of Palm Empty Bunch and Its Impact to Produce Bioethanol Arianie, Lucy; Pebriyana, Utin Dewi; Yudiansyah, Yudiansyah; Idiawati, Nora; Wahyuningrum, Deana
The Journal of Pure and Applied Chemistry Research Vol. 3 No. 2 (2014)
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1355.056 KB) | DOI: 10.21776/ub.jpacr.%y.03.02.165

Abstract

Ethanol production through ionic liquids pretreatment of palm empty bunch (PEB) was carried out. This research aims to investigate impact of ionic liquids synthetic i.e 1-butyl-3-methyl imidazoliumbromide or [BMIM]bromide toward cellulose’s palm empty bunch and convert its cellulose into bioethanol. Ionic liquid was synthesized  through reflux and microwave assisted synthesis methods. Research investigation showed that microwave assisted synthesis produce [BMIM]bromide 90% faster than reflux method. The characterization of synthesized product using FTIR, 1H-NMR, 13C-NMR and LC-MS showed that these reactions have been carried out successfully. Scanning electron microscope figure out changes morphological surface of palm empty bunch caused by ionic liquid pretreatment. Crystallinity index of PEB milled and cellulose of PEFB after [BMIM]bromide dissolution were identified using comparison of PEB FTIR spectrum. Cellulose without dilute [BMIM]bromide have higher LOI number than cellulose after [BMIM]bromide dissolution. It indicated that a large part of cellulose after dissolution has been changed into amorf. Hydrolysis residue of palm empty bunch hydrolyzed by sulfuric acids 5%, 100 0C for 5 hours and produce 685 ppm of reducing sugar. Simultaneous Saccharification and Fermentation using Trichoderma viride and Saccharomyce cerevisiae  for 5 days produce 0,69% of bioethanol.
Co-Authors Bambang Ariwahjoedi Buchari Buchari Bunbun Bundjali Bunbun Bundjali Bunbun Bundjali Bunbun Bundjali Bunbun Bundjali Cynthia Linaya Radiman Cynthia Linaya Radiman Damar Nurwahyu Bima Dian Asfriany Nurfalah Doddy Abdassah Herayati, Herayati I Made ARCANA I Made Arcana I Made Arcana I Putu Parwata Irma Mulyani Irma Mulyani Irma Nuril Maryam Iwan Syahjoko Saputra Khusna Widhyahrini Lucy Arianie M. Taufik Fathaddin M. Taufik Fathaddin, M. Taufik Muhamad Jalil Baari Muhammad Ali Zulfikar Ndruru, Sun Theo Constan Lotebulo Ni Ketut Ketis Nila Tanyela Berghuis Nora Idiawati Novriana Sumarti Nuning Nuraini Nurrahmi Handayani Pertiwi, Annisa Mustika Rani Kurnia Rani Kurnia Rini Setiati RUKMAN HERTADI Sadijah Achmad Sadijah Achmad Santi Nurbaiti Septoratno Siregar Septoratno Siregar Septoratno Siregar Sony Suhandono Sugiatmo Kasmungin Sun Theo Constan Lotebulo Ndruru Sun Theo Constan Lotebulo Ndruru Taufan Marhaendrajana Taufan Marhaendrajana, Taufan Tikarahayu Putri Utin Dewi Pebriyana Utjok W.R Siagian Yana Maolana Syah Yudiansyah Yudiansyah Yuliana, Cut Yulyani Nur Azizah