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All Journal METANA 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 Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences

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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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.
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.
Co-Authors Adelina, Dina Aghata, Esteranita Betzy Amelia, Nikma Azrul Amilia Putri, Sasti 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 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 Romadhoni, Azzumardi Mubarok Setiawan, Oki Syafitri, Nadhatul Wahyudi Budi Sediawan Widyasari Puspa Permata Witra