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All Journal Reaktor JURNAL KIMIA SAINS DAN APLIKASI Jurnal Bahan Alam Terbarukan Seminar Nasional Teknik Kimia Kejuangan Elkawnie Indonesian Journal of Science and Technology Konversi Info-Teknik Buletin Profesi Insinyur International Journal of Advance Tropical Food (IJATF) Jurnal Teknik Kimia dan Lingkungan Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Sains Materi Indonesia JURNAL REKAYASA KIMIA & LINGKUNGAN

Iryanti Fatyasari Nata, Iryanti Fatyasari

Department Of Chemical Engineering, Faculty Of Engineering, University Of Lambung Mangkurat

Author-ID : 579853

Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology

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Utilization of Rice Husk Cellulose as a Magnetic Nanoparticle Biocomposite Fiber Source for the Absorption of Manganese (Mn2+) Ions in Peat Water Emil Zacky Effendi; Yudhi Christian Hariady; Muhammad Daffa Salaahuddin; Chairul Irawan; Iryanti Fatyasari Nata
Jurnal Kimia Sains dan Aplikasi Vol 22, No 6 (2019): Volume 22 Issue 6 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Rice husk (RH) is an agricultural waste that contains cellulose. Rice husk fiber (RHF) can be used as a source of fiber in the manufacture of magnetic nanoparticle biocomposite. The purpose of this study is to synthesize and characterize magnetic nanoparticle biocomposite used as an adsorbent and evaluate its performance on the adsorption of Mn2+ ions and Total Suspended Solid (TSS) in peat water. Rice husk fiber was delignified to eliminate lignin levels. Furthermore, the biocomposite was made through the solvothermal method with and without the addition of hexanediamine. The products produced are two types of adsorbents, namely magnetic nanoparticle biocomposite with an amino group (RHB-MH) and rice husk fiber biocomposite without an amino group (RHB-M). These biocomposites were used to adsorb Mn2+ ions in peat water. Evaluations were carried out at pH 5, 6, 7, and 8 with an optimum adsorption time of 60 minutes. The solutions at the time of adsorption were evaluated to determine the optimum conditions of the adsorption process carried out. The observation of magnetic nanoparticle biocomposite based on the analysis of Scanning Electron Microscopy (SEM) shows magnetic nanoparticles formed on the surface of rice husk fiber with a diameter of 30-50 nm. X-Ray Diffraction (XRD) analysis showed that the delignification of rice husk increased Crystallinity Index (CrI) by 64.98% and reduced silica content by 78%. Fourier Transform Infra-Red (FT-IR) spectrometer show absorption peak at 570 cm-1 for Fe-O bonds and Fe3O4 peak around 1627 cm−1, indicating the presence of N-H bending. The optimum condition for Mn2+ adsorption was achieved at pH 5 and 60-minutes duration with an adsorption capacity of 54.7 mg/g and 190.78 mg/g for RHB-M and RHB-MH. The TSS reduction achieved the effectiveness of 60.2% and 90.3% for BSP-M and BSP-MH, respectively.

Rice Husk Demineralization: Effect of Washing Solution on Its Physicochemical Structure and Thermal Degradation Hesti Wijayanti; Iryanti Fatyasari Nata; Chairul Irawan; Rinny Jelita
Jurnal Kimia Sains dan Aplikasi Vol 24, No 2 (2021): Volume 24 Issue 2 Year 2021
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Generally, biomass consists of various amounts of minerals. These minerals influence the biomass characteristics and behavior during their use in a thermochemical process such as pyrolysis. The conversion during pyrolysis and its final product will be affected. This research was carried out to study the impact of washing treatment in water and acid solutions on the rice husk as the raw material for pyrolysis. Also, the effect of acid strength (citric acid as the weak acid while nitric acid as the strong acid) and its concentration (1, 5, and 10 wt.%) was investigated. The results confirmed from the thermogravimetry (TGA/DTG) analysis, surface analysis (SEM), and spectra (FTIR) analysis describe the treatment using water caused less change on the rice husk surface structure and its thermal degradation. However, it seems hard to reduce the minerals (proved from XRF analysis). Meanwhile, the treatment using acids solution resulted in lower mineral composition than the rice husk without treatment. This result is more visible for demineralization using a 5 wt.% nitric acid solution. However, for a higher concentration (washing treatment using 10 wt.% solutions of nitric acid), the degradation on rice husk structure was more occurred.

Bioethanol Production from Cassava Peel Treated with Sulfonated Carbon Catalyzed Hydrolysis Primata Mardina; Chairul Irawan; Meilana Dharma Putra; Sylvera Bella Priscilla; Misnawati Misnawati; Iryanti Fatyasari Nata
Jurnal Kimia Sains dan Aplikasi Vol 24, No 1 (2021): Volume 24 Issue 1 Year 2021
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

A large amount of Cassava peel as biomass waste is generated by agricultural activities, and it led to a new pursuit to exploit the utilization of biomass waste. This research aimed to study the potential of Cassava peel as raw material for bioethanol production. This study was performed in 2 main processes, acid hydrolysis, and fermentation. The experiment was initiated by conducting acid hydrolysis (100°C and 60 min) on Cassava peel’s starch using sulfonated carbon catalyst palm oil empty fruit bunch (5%-w/v) to produce 13.53 g/L glucose. The glucose contained hydrolysates then continued to ferment at 30°C. The effect of fermentation time (h), pH, and shaking rate (rpm) of cassava peel’s starch fermentation using Saccharomyces cerevisiae was analyzed. The best result was found at pH 4.5 and 50 rpm for a 24 h reaction with 3.75 g/L of bioethanol concentration. This study revealed that Cassava peel is a promising feedstock for biofuel production.

Co-Authors Abdul Ghofur Aceng Lesti Adawiyah, Mariatul Agata Febby Ayuningtyas Agita Purnawilda Agus Mirwan Aladin Eko Purkuncoro Anis Artiyani Ariwibowo, Sigit Asnia, Mira Azzahra, Atina Sabila Chairul Irawan Choir Muizliana Choir Muizliana, Choir Denis Yanuardi Dewi, Heny Puspita Dewi, Yuniza Shentiya Dian Sylvana Ansari Dian Sylvana Ansari, Dian Sylvana Doni Rahmat Wicakso Edi Mikrianto Emil Zacky Effendi Fadhillah, Hilda Nur Fitri Halisyah Fitriannoor Fitriannoor Gazaly, Ahmad Gita Cristy Hadtimin, Ahmad Farhan Helda Niawati Helda Niawati, Helda Hendrawan, Rangga Dwi Herlina Herlina Herlina Herlina Hesti Wijayanti Hesti Wijayanti Hesti Wijayanti I Putu Andika Putra I Putu Andika Putra, I Putu Andika Jayanudin Jayanudin Jefri A. Simanjuntak Jefriadi Jefriadi Jody Hartoto Prayogo Jody Hartoto Prayogo, Jody Hartoto Karima, Ismi Nur Kiky Corneliasari Sembiring Laila, Noor Lalu Mustiadi Ma'rifah, Yulia Nurul Madani, Zikri Daffa Aulia Marisa, Rosmasari Masrurotul Ajiza Meda Nur Anisa Meilana Dharma Putra Mira Asnia Mira Pangesti, Mira Misnawati Misnawati Muhammad Daffa Salaahuddin Muhammad Jauhar Mahdi Muthia Elma Nanik Astuti Rahman Ni Kadek Devi Ananda Saraswati Noor Laila Nooryantini Nooryantini Nor Asiyah Norlina Norlina, Norlina Paskah Fransiska Afrida Simatupang Prasetya, Angga Primata Mardina Retno Febriyanti Ridhayanti Mu'minah Rinna Juwita Rinna Juwita Rinny Jelita Ristiarini, Susana Rita Khairina Rodiansono Rodiansono Rosmasari Marisa Selly Agustina Sunnardianto, Gagus Ketut Syamsul Ma"arif Putera Ukhrawi Sylvera Bella Priscilla Toni Arianto Toni Arianto, Toni Tri Dianpalupidewi Tun Sriana Tun Sriana Ukhrawi, Syamsul Ma'arif Putra Vo, Duc-Thang Wulandary, Indah Retno Yudhi Christian Hariady Yuli Ristianingsih Yulia Nurul Ma'rifah Yulian Firmana Arifin Yuniza Shentiya Dewi Yuniza Shentiya Dewi Zakaria Zakaria

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