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All Journal METANA IPTEK The Journal of Engineering CHEESA: Chemical Engineering Research Articles Menara Perkebunan Jurnal Surya Teknika REACTOR : Journal of Research On Chemistry And Engineering Jurnal Pengabdian dan Pemberdayaan Nusantara (JPPNu) Journal of Vocational Studies on Applied Research Jurnal Teknologi Kimia Mineral Jurnal Pengabdian Masyarakat dan Lingkungan Jurnal Integrasi Proses dan Lingkungan Indonesian Journal of Chemical Science Jurnal Rekayasa Proses
Mustikaningrum, Mega
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences

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Evaluasi Konstanta Kecepatan Ekstraksi Beta (ß)-Karoten Berbasis Campuran Pelarut Aseton dan Dietil Eter Johar, Nirmala; Mustikaningrum, Mega
REACTOR: Journal of Research on Chemistry and Engineering Vol. 4 No. 1 (2023)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v4i1.69

Abstract

Research on the extraction of ß-carotene has been carried out intensively in recent years, considering the wide application of ß-carotene compounds, especially in the pharmaceutical and health fields. In the health sector, βcarotene has antioxidant compounds that can neutralize unstable molecules called free radicals. When the number of free radicals is too high in the body, it can cause cell and tissue damage which is known as oxidative stress. So the consumption of β-carotene should be increased. Various technologies are used for the isolation of ß-carotene from raw materials, such as maceration, soxhlet, ultrasound-assisted extraction (UAE), pressurized liquid extraction (PLE) and supercritical liquid extraction (SFE). This study uses the maceration method with the consideration that the energy used is relatively low and refers to the heat-resistant nature of β-carotene. The purpose of this study was to analyze the addition of co-solvent diethyl ether to acetone solvent to the value of the extraction rate constant (k). In this case, the addition of a co-solvent can help transport β-carotene to the solvent effectively by increasing the yield of β-carotene produced. Quantitative analysis was carried out using calculations based on mass balance, pseudo- second-order, and Peleg to then conclude which model is by the resulting data. The final yield of β-carotene was 34.395; 103.287 and 108.974 µg/g for diethyl ether, acetone, and a mixture of acetone with diethyl ether (24: 1) v/v respectively. The value of the extraction speed constant for each solvent diethyl ether, acetone, and a mixture of acetone with diethyl ether was 0.8913; 1.03975, and 2.0975 (minute-1) based on the Peleg model and 0.00738 for each solvent; 0.00828; 0.0141 (gram/mg.minute) based on the pseudo second-order model.
Pengaruh Perbedaan Suhu dan Waktu Terhadap Kinetika Ekstraksi Minyak dengan Metode Ultrasonik pada Ampas Kopi Muqorrobin, Maulana; Mustikaningrum, Mega
Jurnal Integrasi Proses dan Lingkungan Vol. 1 No. 1 (2023): Jurnal Integrasi Proses dan Lingkungan
Publisher : Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/jipl.v1i1.6416

Abstract

Penelitian ekstraksi minyak ampas kopi dengan pengaruh perbedaan suhu bertujuan untuk mengetahui suhu yang paling efektif dan penentuan laju ekstrakis pada ekstraksi minyak kopi. Proses ekstraksi ampas kopi dengan bantuan gelombang ultrasonik menggunakan variasi suhu berturut-turut yaitu pada 30, 40 dan 50°C. Kadar minyak (ml) yang didapatkan pada suhu 30°C sebesar 0,8; 1; 1,05; 1,1 ml. Pada suhu 40°C sebesar 1,1; 1,2; 1,3; 1,5 ml. Pada suhu 50°C sebesar 1,3; 1,5; 1,6; 1,8 ml. Data tersebut didapatkan pada masing-masing waktu 30, 60, 90 dan 120 menit. Nilai konstanta (k) kecepatan ekstraksi pada penelitian ini ditentukan dengan menggunakan model pseudo second order dengan hasil sebesar 0,040124; 0,040334; 0,029179 (gram/g.sekon) untuk masing-masing suhu 30, 40 dan 50°C. Dari hasil perhitungan energi aktivasi yang dihasilkan sebesar 1,32442 J/mol.K.
Transesterifikasi In situ Produksi Biodiesel Dengan Variasi Massa Bahan Baku Terhadap Karakteristik Biodiesel Syafitri, Nadhatul; Mustikaningrum, Mega
Jurnal Integrasi Proses dan Lingkungan Vol. 1 No. 2 (2024): Jurnal Integrasi Proses dan Lingkungan
Publisher : Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/jipl.v1i2.7135

Abstract

Biodiesel is one of the promising alternative fuels, environmentally friendly, and has no adverse effects on health. In this study, biodiesel production was carried out using the in situ transesterification method. The raw material used was mahogany seeds with variations in raw material mass of 10 grams and 20 grams. The catalyst used was KOH with methanol as the solvent and n-hexane as the co-solvent. In situ transesterification was performed at a reaction temperature of 65°C, stirring speed of 400 rpm, and a reaction time of 40 minutes. The research results show that the mass of the raw material affects the biodiesel yield. At a raw material mass of 10 grams, a yield of 70.09% was obtained, while for a raw material mass of 20 grams, the yield was 82.00%. The biodiesel analysis results show that the density values for the 10-gram raw material mass variation are 0.8512, and for the 20-gram raw material mass variation, it is 0.8556. The water content is 1.46%, and the free fatty acid (FFA) content is 0.76 mg KOH/gram for the 10-gram raw material mass variation and 0.675 mg KOH/gram for the 20-gram raw material mass variation. The results of the biodiesel characteristic tests meet the SNI 7182:2015 standard.
Cr (VI) Removal from Aqueos Solution by Coagulation – Adsorption Integrated System Sawali, Fikrah Dian Indrawati; Setyawan, Fery; Afandy, Moh Azhar; Mustikaningrum, Mega
Indonesian Journal of Chemical Science Vol. 13 No. 1 (2024)
Publisher : Prodi Kimia

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Abstract

Industrial wastewater generated by nickel mining has a high content of heavy metals, one of which is Chromium Hexavalent or Cr(VI) metal. Commonly used methods in reducing Cr(VI) metal concentration are coagulation and adsorption. This method is the most economical, simple and highly efficient method. This research uses the coagulation - adsorption integration system method, which is a combination of coagulation and adsorption methods in stages and uses the same wastewater. The purpose of this research is to see the performance of alum, FeSO4 and a combination of alum: FeSO4 as coagulant and fly ash as adsorbent in the removal of Cr(VI) levels in wastewater samples. Also, the efficiency of using the coagulation - adsorption integration system in the removal of heavy metal levels. The adsorption capacity value of this process can also be calculated. The resulting data were then evaluated using a spectrophotometer visible to assess the reduction of Cr(VI) concentration in wastewater. Based on the experiment, alum type coagulant with a waste and coagulant composition ratio of 2:3 and a stirring time of 60 minutes can reduce Cr(VI) levels to 14.18 mg/L from 100 mg/L. The addition of the adsorption process using fly ash helped reduce the concentration of heavy metal Cr(VI) to 12.15 mg/L and the highest efficiency value was 87.9%, and the adsorption capacity value was 0.087 mg/gram.
Peningkatan Kualitas Minyak Dedak Padi melalui Metode Ekstraksi Berbantu Gelombang Ultrasonik dan Metode Adsorpsi Rahmawati, Riris Dian; Mustikaningrum, Mega
JURNAL TEKNOLOGI KIMIA MINERAL Forthcoming issue
Publisher : Politeknik ATI Makassaar

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Abstract

Dedak padi merupakan limbah penggilingan padi yang kaya minyak sekitar 17–22%, namun kurang dimanfaatkan dan umumnya menghasilkan kadar Free Fatty Acid (FFA) tinggi. Penelitian ini bertujuan mengekstraksi minyak dedak padi menggunakan Ultrasound-Assisted Extraction (UAE) sekaligus menurunkan FFA melalui metode adsorpsi dengan adsorben zeolit. Variabel proses yang dikaji meliputi rasio bahan:pelarut terhadap yield, suhu dan waktu ekstraksi terhadap studi kinetika dan energi aktivasi, serta massa adsorben terhadap kadar FFA. Kondisi optimum diperoleh pada rasio 1:5 dengan yield 5,85%, suhu 60 °C dan waktu 60 menit dengan yield 7,05%, serta massa adsorben 30% dari berat minyak dengan FFA akhir 1,26%. Proses mengikuti model kinetika pseudo second order (R² = 0,969) dengan konstanta laju 0,003 g/mg.menit dan energi aktivasi 8,51 kJ/mol. Metode UAE menunjukkan kelebihan berupa pelepasan minyak yang lebih cepat pada suhu rendah sehingga menekan pembentukan FFA, sedangkan adsorpsi zeolit efektif menghilangkan FFA residu melalui mekanisme pertukaran ion dan afinitas permukaan. FFA akhir memenuhi standar minyak kasar SNI 2901:2021 namun belum memenuhi standar minyak dedak padi pemurnian Codex CXS 210-1999. Penelitian ini menegaskan bahwa integrasi UAE–adsorpsi merupakan pendekatan yang efisien untuk meningkatkan kualitas dan nilai tambah minyak dedak padi.
Pengaruh Paparan Gelombang Ultrasonik pada Ekstraksi Bunga Telang Terhadap Kandungan Senyawa Flavonoid Bilqis Widiawati, Febriana; Mustikaningrum, Mega
SURYA TEKNIKA Vol 12 No 2 (2025): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v12i2.10489

Abstract

The study aims to determine the effect of ultrasonic wave exposure on the extraction of butterfly pea flowers (Clitoria ternatea L.) toward flavonoid compound content. The method used was Ultrasonic Assisted Extraction (UAE) with variations in temperature 30oC, 40oC, 50oC, extraction time 20, 25, 30 minutes, and ethanol solvent volume 50, 100, 150 ml. analysis was carried out using a UV-Vis Spectrophotometer. The results showed that the optimal extraction time was 25 minutes with a yield of 45,51%, the optimal temperature was 40oC with a yield of 24,6%, and optimal solvent volume was 100 ml with a yield of 43,05%. Kinetic analysis indicated that the Pseudo Second Order model was the most suitable with a regression value of 0,99989. The extraction process was dominatetd by physical diffusion with an activation energy of 8,4621 kJ/mol, indicating that increasing temperature enhances extraction rate without significant degradation of active compounds.
Ketalization of Glycerol and Acetone to Solketal: Effect of Temperature, Concentration & Mathematical Model Sawali, Fikrah Dian Indrawati; Afandy, Moh Azhar; Mustikaningrum, Mega; Lestary, Rara Ayu
IPTEK The Journal of Engineering Vol. 11 No. 1 (2025)
Publisher : Pusat Publikasi Ilmiah, Institut Teknologi Sepuluh Nopember.

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Abstract

Solketal is a viable method for using glycerol, a by-product of biodiesel production. This study aims to identify the optimal operating parameters for solketal compounds generated from the glycerol ketalization reaction with acetone by using mathematical models that effectively forecast an appropriate framework for this process. This research consists of three critical phases: the ketalization reaction of glycerol with acetone, the characterization of the result solketal products, and the ketalization reaction utilizing the Amberlite IR 120 Na catalyst. The process begins by introducing glycerol and acetone in a mole ratio of 1:3, followed by mechanical Stirring at 500 rpm. The temperature is regulated using a water bath to maintain a constant reaction temperature under specified conditions of 20 °C, 120 °C, 150 °C, and 180 °C, with catalyst masses of 1%, 3%, 5%, and 7%. The mathematical model used is of exponential and polynomial order 2. The findings indicated that the optimal glycerol conversion of 46.01% was attained at 50 °C, using a 5% catalyst concentration throughout a reaction duration of 120 minutes. Second-order polynomial regression is the most appropriate mathematical model to represent this process.
Co-Authors Adelina, Dina Aghata, Esteranita Betzy Amelia, Nikma Azrul Amilia Putri, Sasti Aradea, Prama Punggi Arista, Desty Bilqis Widiawati, Febriana Devi Yuni Susanti Diah Ratnasari Fatmawati, Yuni Fery Setyawan Fikrah Dian Indrawati Sawali Harunur Rosyid Indra Gita Anugrah Johar, Nirmala Lestary, Rara Ayu Lutiana Mahendra, Arya Maulana Moh. Azhar Afandy Mohamad Endy Y Yulianto Muhadhim, Arbi Muqorrobin, Maulana Muslikhin Hidayat Pambudiarto, Benny Arif Pemta Tiadeka Prasakti, Laras Purwaningtyas, Fiska Yohana Rahmawati, Riris Dian Romadhoni, Azzumardi Mubarok Setiawan, Oki Syafitri, Nadhatul Wahyudi Budi Sediawan Widyasari Puspa Permata Witra