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All Journal Jurnal Teknik Kimia USU Chemistry Indonesian Journal of Chemical Research Jurnal Teknik Kimia USU Journal Of Chemical Process Engineering
Amin, Ida Ifdaliah
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Penggunaan Adsorben Bentonit pada Proses Pencucian Kering dalam Pemurnian Biodiesel Minyak Jelantah Amaliah Azis, Hijrah; Mustam, Mariaulfa; Ramdani, Nurfika; Amin, Ida Ifdaliah; Sari, Nurmala; Gregorius, Geraldy
Jurnal Teknik Kimia USU Vol. 12 No. 2 (2023): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v12i2.11644

Abstract

Biodiesel can be made by utilizing used cooking oil through a chemical process, namely through a transesterification reaction, namely changing the oil (triglycerides) into fatty acid methyl esters. Washing must be done to remove the remaining impurities in biodiesel. The dry washing method is purification by utilizing the adsorption process to remove impurities in crude biodiesel. Bentonite is an alternative adsorbent that can be used as dry washing in the biodiesel refining process because it is cheaper, abundant in nature and has a layered structure with the ability to swell. The purpose of the study was to determine the ability of bentonite activated with acid as a dry washing agent in biodiesel purification. The research method used is the dry washing process method using bentonite adsorbents. The application of bentonite adsorbent as much as 6 grams with a contact time of 3 hours is the best operating condition to produce biodiesel with a pH of 6 and a clarity value of 96.7.
Penggunaan Adsorben Bentonit pada Proses Pencucian Kering dalam Pemurnian Biodiesel Minyak Jelantah Amaliah Azis, Hijrah; Mustam, Mariaulfa; Ramdani, Nurfika; Amin, Ida Ifdaliah; Sari, Nurmala; Gregorius, Geraldy
Jurnal Teknik Kimia USU Vol. 12 No. 2 (2023): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v12i2.11644

Abstract

Biodiesel can be made by utilizing used cooking oil through a chemical process, namely through a transesterification reaction, namely changing the oil (triglycerides) into fatty acid methyl esters. Washing must be done to remove the remaining impurities in biodiesel. The dry washing method is purification by utilizing the adsorption process to remove impurities in crude biodiesel. Bentonite is an alternative adsorbent that can be used as dry washing in the biodiesel refining process because it is cheaper, abundant in nature and has a layered structure with the ability to swell. The purpose of the study was to determine the ability of bentonite activated with acid as a dry washing agent in biodiesel purification. The research method used is the dry washing process method using bentonite adsorbents. The application of bentonite adsorbent as much as 6 grams with a contact time of 3 hours is the best operating condition to produce biodiesel with a pH of 6 and a clarity value of 96.7.
Optimizing Post-Harvest Preservation of Shallots (Allium Aascalonicum L) through the Application of Co-60 Gamma Ray Irradiation Technology Sarjono, Arianto Passalli; Indriastuti, Alfiah; Azis, Hijrah Amaliah; Ramdani, Nurfika; Mustam, Mariaulfa; Amin, Ida Ifdaliah; Wahab, Nurhikmah; Bangun, Daniel
Journal of Chemical Process Engineering Vol. 9 No. 2 (2024): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i2.1238

Abstract

Shallots are an important food commodity for the needs of various Indonesian cuisines and other uses that are widely utilized. However, currently shallot farmers complain about post-harvest shallots that are easily damaged such as rotting, wrinkling, porous, root growth and fungal growth. To reduce this damage, preservation is needed. One alternative technology is Co-60 Gamma Ray Irradiation based on the principle of electromagnetic radiation that produces high-energy photons that cause ionization and excitation in the material it passes through. The nature of Gamma rays used in the preservation process has great penetrating power and does not cause temperature changes in the irradiated food. The purpose of this study was to determine the effect of Co-60 gamma ray irradiation on the optimization of the shelf life of post-harvest preservation of shallots with variations in control doses: low, medium and high, variations in temperature and quality parameters. The method of this research stage is: 1) Sample preparation. 2) Gamma Ray Irradiation of Co-60 with variation of control dose: low, medium and high 3) Analysis of temperature measurement and measurement of quality parameters (water content, weight loss, damage and hardness) against the irradiation dose. The results showed that gamma ray irradiation of Co-60 affected the length of shoots based on variation of dose and temperature, namely on day 1 and day 14 the combination of 650Gy treatment at 350C had the smallest shoot length, water content was relatively high, weight loss was relatively small, damage was relatively small and hardness was relatively high.
Hydrothermal Synthesis and Characterization of Sodalite from Feldspar Mesawa Minerals Amin, Ida Ifdaliah; Wahab, Abdul Wahid; Taba, Paulina; Mukti, Rino R.; S, Giovanno Alvin; Musa, Bulkis; Azis, Hijrah A.
Indonesian Journal of Chemical Research Vol 12 No 3 (2025): Edition for January 2025
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2025.12-ami

Abstract

The mineral feldspar is a potential raw material in zeolite synthesis because of the high content of SiO2 and Al2O3. Characterization of X-ray diffraction (XRD) and X-ray fluorescence (XRF) on Mesawa feldspar minerals showed high crystallinity and aluminosilicate composition. The synthesis process uses the hydrothermal method with various times and concentrations of NaOH. The sample was mixed with NaOH, stirred until homogeneous at 300 rpm for 1 hour, and transferred to an autoclave. The autoclave was tightly closed and heated in an oven at 170 °C for 72 hours. XRD and XRF analysis revealed that the feldspar mineral had changed to sodalite with a purity of 90.89% and 90.06%; with a yield of 80.89% and 87.36%. FTIR characteristics show a specific peak for sodalite at 422-460 cm-1 related to Si-O bond vibrations, and absorption bands at 698 and 719 cm-1 related to Al-OH vibrations. The SEM results confirmed the morphology of the sodalite resembling balls like raspberries". This research proves that the Mesawa feldspar mineral sample contains type 6 secondary building units, the same blocks as zeolite analcime and cancrinite, so it has the potential as an adsorbent for heavy metals and as a catalyst alternative
Co-Authors Abdul Wahid Wahab Azis, Hijrah A. Bangun, Daniel Chatarina Umbul Wahyuni Gregorius, Geraldy Hijrah Amaliah Azis Indriastuti, Alfiah Musa, Bulkis Mustam, Mariaulfa Nurmala Sari Paulina Taba Ramdani, Nurfika Rino R. Mukti S, Giovanno Alvin Sarjono, Arianto Passalli Wahab, Nurhikmah