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All Journal METANA CHEESA: Chemical Engineering Research Articles Menara Perkebunan 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 Jurnal Rekayasa Proses
Mustikaningrum, Mega
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Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Public Health Social Sciences

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Comparative Study of Maceration and Ultrasonic Techniques in Coffee Oil Extraction Based on Energy Evaluation and Mass Transfer Value Mustikaningrum, Mega; Yulianto, Mohamad Endy; Prasakti, Laras
CHEESA: Chemical Engineering Research Articles Vol. 7 No. 1 (2024)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v7i1.19326.47-56

Abstract

Coffee is a significant commodity trend, with numerous coffee shops rapidly established in Indonesia. The development of this industry has led to an increased discharge of coffee grounds into the environment. The discarded grounds contain oil which can be optimized using various methods and serve as a raw material for biodiesel. Therefore, this study aimed to compare the maceration and ultrasonic methods of extracting coffee grounds. The comparison focused on yield, mass transfer value (diffusivity), and extraction speed constant based on the proposed mathematical model. The results showed a yield of 12.1% and 16%, for the maceration and ultrasonic methods, respectively. Diffusivity value was registered at 9.99 x 10-11 m2/min and 9.8 x 10-10 m2/min, while extraction speed constant values were discovered to be 0.2 m/min and 1.798 m/min, respectively. Additionally, the energy evaluation of ultrasonic extraction produced a Gibbs energy value of -3765.72 Joules.
Pengaruh Suhu Terhadap Difusivitas dan Konstanta Kecepatan Reaksi Transesterifikasi In-Situ Produksi Biodiesel Amelia, Nikma Azrul; Mustikaningrum, Mega
METANA Vol 20, No 1 (2024): Juni 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/metana.v20i1.59022

Abstract

Biodiesel merupakan bahan bakar yang dapat diperbarui dengan manfaatnya sebagai pengganti diesel/solar dengan keunggulan emisi gas buang yang jauh lebih baik. Pada penelitian kali ini dilakukan reaksi transesterifikasi in-situ produksi biodiesel berbasis biji mahoni. Penelitian ini bertujuan untuk menilai pengaruh perbedaan suhu pada hasil yield biodiesel serta menentukan nilai konstanta kecepatan reaksi ekstraktif dan difusivitas ekstraksi reaktif biodiesel. Metode transesterifikasi in situ dijalankan dengan rasio bahan baku dan metanol ( 1:101,39), bahan baku dan tetrahidrofuran (1:67,85), dan rasio NaOH sebesar 4% dari berat bahan baku. Dari hasil penelitian, yield biodiesel terbaik didapatkan pada suhu 30°C dengan 87,3%. Sementara itu, nilai konstanta kecepatan reaksi dan difusivitas bervariasi pada suhu 10°C, 20°C, dan 30°C. Pada suhu 30°C, konstanta kecepatan reaksi adalah 0,063 dm3/mol.menit dan nilai difusivitas untuk berbagai komponen seperti metanol, minyak nabati, metil ester, dan gliserol adalah 2 x 10-10 ; 2 x 10-10 ; 7,18 x 10-9 ; dan 1 x 10-10 dm3/menit.  Biodiesel is a renewable fuel with the benefit of being a substitute for diesel with the advantage of much better exhaust emissions. In this research, an in-situ transesterification reaction was carried out for the production of biodiesel based on mahogany seeds. This research aims to assess the effect of temperature differences on the biodiesel yield and determine the reaction rate of extractive and the diffusivity of reactive biodiesel extraction. The In-Situ Transesterification method was carried out with the ratio of raw material to methanol (1:101.39), raw material to tetrahydrofuran (1:67.85), and a NaOH ratio of 4% of the raw material weight. From the research results, the best biodiesel yield was obtained at a temperature of 30°C with 87.3%. Meanwhile, the reaction rate constant and diffusivity values vary at temperatures of 10°C, 20°C, and 30°C. At a temperature of 30°C, the reaction rate constant is 0.063 dm3/mol.minute, and the diffusivity values for various components such as methanol, vegetable oil, methyl ester, and glycerol are 2 x 10-10 ; 2 x 10-10 ; 7.18 x 10-9 ; and 1 x 10-10 dm3/minute, respectively. 
Evaluasi Nilai Konstanta Kecepatan Ekstraksi Pada Isolasi Piperin Lada Hitam Menggunakan Etanol 95% Arista, Desty; 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.v1i1.6412

Abstract

Pada penjuru dunia termasuk di Indonesia telah berkembang pesat pemanfaatan tanaman obat, dengan adanya gagasan untuk kembali ke alam, lada hitam (Piper nigrum Linn) termasuk salah satu tanaman obat yang umum digunakan sebagai obat. Piperine merupakan bahan utama serta zat yang berkhasiat pada lada hitam yang mempunyai efek anti diare serta anti inflamsi. Tujuan penelitian ini ialah untuk mengetahui kandungan piperin dalam lada hitam dengan ekstrak etanol 95%, serta pengajuan model matematis untuk mengetahui nilai konstanta kecepatan ekstraksi(k) dan konstanta kesetimbangan isolasi piperin guna rancangan desain komersil. Pada penelitian ini menggunakan metode ekstraksi soxhlet dalam pelarut etanol 95%. Ekstraksi piperin menggunakan metode ekstraksi soxhletasi berlangsung selama 1 – 2 jam menggunakan pelarut etanol. Analisis piperin dilakukan dengan analisis kualitatif dengan pengamatan Uv-Vis pada panjang gelombang 365 nm. Kadar piperin yang didapat dari masing – masing ukuran 40, 50, dan 60 mesh sebesar 50.08612; 51.19353 dan 52.01271 ppm. Kinetika reaksi dilakukan untuk mengetahui konstanta laju kecepatan ekstrasi dari berbagai ukuran partikel yang digunakan. Nilai konstanta kecepatan (k) dan kesetimbangan ekstraksi (K) dari masing – masing ukuran partikel diperoleh dengan menggunakan prinsip neraca massa menggunakan fitting matlab, model pseudo second order dan model peleg. Hasil analisis densitas dari masing-masing ukuran partikel, mesh 40 diperoleh densitas piperin sebesar 2.220364 g/cm3, mesh 50 diperoleh hasil densitas sebesar 2.299711 g/cm3, dan mesh 60 diperoleh hasil densitas sebesar 2.150143 g/cm3. Hasil analisis yield pada masing – masing ukuran mesh 40, 50 dan 60 didapatkan hasil masing – masing sebesar 1.386 %, 0,865% dan 1.201%
ANALISIS PARAMETER NILAI DIFUSIVITAS KAFEIN PADA EKSTRAKSI AMPAS KOPI BERBANTU GELOMBANG ULTRASONIK Mustikaningrum, Mega; Sawali, Fikrah Dian Indrawati
JURNAL TEKNOLOGI KIMIA MINERAL Vol 2 No 1 (2023): JURNAL TEKNOLOGI KIMIA MINERAL
Publisher : Unit Penelitian dan Pengabdian Kepada Masyarakat Politeknik ATI Makassaar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (361.263 KB) | DOI: 10.61844/jtkm.v2i1.448

Abstract

Limbah ampas kopi yang sangat melimpah diakibatkan konsumsi minuman kopi yang meningkat dan menjadi gagasan penting bagaimana pengolahan limbah ampas kopi agar kemudian tidak menjadi limbah buangan yang tidak bermanfaat. Salah satu senyawa yang dapat dimanfaatkan kembali dari buangan limbah ampas kopi adalah kafein. Kafein merupakan senyawa yang bermanfaat bagi kesehatan. Kafein dapat di isolasi dari limbah ampas kopi dengan cara ekstraksi. Pada penelitian ini ekstraksi dilakukan dengan menggunakan bantuan gelombang ultrasonik dengan bantuan alat sonikator tipe bath. Sebesar 25 gram sampel ampas kopi dilarutkan pada 250 ml dan diletakan pada alat sonikator yang dioperasikan selama 45 menit pada 30 0C. Sampel hasil kemudian dianalisis menggunakan HPLC untuk mengetahui konsentrasi akhir kafein yang dihasilkan. Fokus penelitian ini adalah mencari nilai beberapa parameter uji seperti konstanta difusivitas (DA), konstanta kecepatan ekstraksi (k) dan konstanta kesetimbangan ekstraksi (K), dimana didapatkan masing-masing nilai parameter uji sebesar 0.014462 dm2/menit; 0,00256 dm/menit dan 103,218. Konsentrasi akhir kafein yang dihasilkan pada penelitian sebesar 0,08053 mol/dm3.
Effect of Sodium Hydroxide Treatment on Adsorption of Methylene Blue Based on Cellulose Nano Crystals Mustikaningrum, Mega; Adelina, Dina; Indrawati Sawali, Fikrah Dian; Afandy, Moh Azhar
Journal of Vocational Studies on Applied Research Volume 6, Issue 1, Year 2024 (April 2024)
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jvsar.v6i1.22505

Abstract

Methylene blue is one of the dye wastes that dissolve in the aquatic environment that cannot be directly degraded by the environment. If the quantity of this waste is large, it will become a compound that is toxic to the aquatic environment. One of the modern methods used to process this dye waste is adsorption. The adsorption method is a method of binding compounds with the help of adsorbents. One of the renewable adsorbent technologies comes from cellulose. Cellulose is often used because it has active groups that are quite effective in binding certain compounds. In this study, cellulose IV was produced, called nano cellulose crystals. Cellulose generally consists of amorphous and crystalline parts. The cellulose produced is hydrolyzed with sulfuric acid to remove the amorphous part so that only crystalline cellulose is obtained, followed by the help of ultrasonic waves to break the size into a nano form which is expected to have a large surface area. As a result of the hydrolysis stage, the nano cellulose crystals produced have sulfate groups that can bind methylene blue which when dissolved in water becomes cationic. This force is called electrostatic force. Some important stages of cellulose nanocrystal production are alkaline treatment, bleaching, hydrolysis, sonication, and freeze-drying. This study focuses on the effect of NaOH concentration used in alkaline treatment. NaOH in this case functions to dissolve impurities such as hemicellulose and lignin in a biomass. Removal of hemicellulose and lignin greatly affects the yield of cellulose produced. Based on the results of the study using 3,4, and 5% NaOH produced cellulose percentages of 38.7121; 39.7949, and 39.9138%, respectively. Cellulose content ultimately affects the number of active groups that bind methylene blue. The adsorption study evidences this obtained the percentage of removal at each concentration of 67.685; 70.837 and 71.823%. Another objective of this study was also to get the constant value of the extraction rate at each NaOH concentration used in the adsorption process. The values obtained were 0.0029; 0.0032 and 0.0039 m/minute at each NaOH concentration used during the alkaline treatment process.
IMPLEMENTASI EKONOMI SIRKULAR BERBASIS DIGITALISASI NERACA SAMPAH MENUJU GKMS (GRESIK KAWASAN MERDEKA SAMPAH) Anugrah, Indra Gita; Witra, Widyasari Puspa Permata; Mustikaningrum, Mega; Rosyid, Harunur; Mahendra, Arya Maulana; Romadhoni, Azzumardi Mubarok; Muhadhim, Arbi
Jurnal Abdimas UNU Blitar Vol 6 No 2 (2024): Vol 6 No 2 (2024): Volume 6 Nomor 2 : Desember 2024
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/jppnu.v6i2.307

Abstract

Bertambahnya kuantitas sampah yang tidak dibersamai dengan hilirisasi pengelolaan sampah yang baik seiring dengan perkembangan ekonomi dan industri Kota Gresik menjadi fokus pengabdian masyarakat yang dilakukan. Kesalahan Paradigma masyarakat terkait fungsi tempat pembuangan akhir menjadi permasalahan bagi TPA Ngipik Gresik. Semakin hari tumpukan sampah di TPA Ngipik Gresik semakin tidak tertangani dengan jumlah yang tidak dapat secara pasti dapat terhitung. Keadaan ini harus diselesaikan dengan mengubah pola pikir masyarakat, dimana harus ada pengelolaan sampah berbasis 5R pada skala rumah tangga dan memberikan sosialiasi bahwasannya sampah memiliki nilai jual sehingga circular economy dapat berjalan. Dengan demikian, terdapat beberapa kegiatan yang dilakukan pada kegiatan pengabdian ini yang dikhususkan pada sosialisasi pengelolaan sampah skala rumah tangga baik organik maupun anogranik, pembuangan sampah sesuai dengan penggolongan sehingga kuantitas sampah dapat terhitung dengan baik, dan pengenalan software aplikasi terkait dengan neraca sampah dan jual beli produk sampah di Kota Gresik. Kegiatan dilaksanakan di Kelurahan Manyarejo, Gresik dan mitra pengabdian berasal dari Dinas Lingkungan Hidup (DLH) Gresik.
Sosialisasi Pembuatan Pupuk Organik dari Limbah Organik Rumah Tangga Berbantu Compost Bag Setiawan, Oki; Pambudiarto, Benny Arif; Purwaningtyas, Fiska Yohana; Mustikaningrum, Mega; Aghata, Esteranita Betzy; Fatmawati, Yuni
Jurnal Pengabdian Masyarakat dan Lingkungan (JPML) Vol 3 No 2 (2025): Jurnal Pengabdian Masyarakat dan Lingkungan (JPML)
Publisher : Universitas Muhammadiyah Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30587/jpml.v3i2.9143

Abstract

Household waste has become a pressing issue that needs to be addressed immediately, starting from the household level. Integrated solutions for household waste management have been implemented, both in the form of local regulations and direct socialization of household waste management to residents. However, optimization has not yet been achieved due to the increasing amount of household waste each year. One of the contributions from universities is to provide socialization and training on household waste management, covering materials on the sorting of organic and inorganic waste, the making of organic fertilizer for the community, the dissemination of organic fertilizer use, and an explanation of the impacts of poorly managed waste from an environmental perspective. The program implemented in this community service is the socialization of organic fertilizer making assisted by compost bags in Kedanyang Village, Gresik. Organic fertilizer made using compost bags is rich in carbon and nitrogen compounds, which are good for plant growth. This socialization also aims to reduce the impact of waste disposal on the environment, such as soil, water, and air pollution, and its effects on human health. In this compost bag method, the basic materials are dry and wet waste in a certain ratio, assisted by EM4 activator so that the composting process can run better. Organic fertilizer is made within 3-4 weeks before use and is in solid form.
Batch filtration model of proanthocyanidins purification process from sorghum pericarp extract using polyethersulfone membrane Afandy, Moh. Azhar; Sediawan, Wahyudi Budi; Hidayat, Muslikhin; Susanti, Devi Yuni; Sawali, Fikrah Dian Indrawati; Mustikaningrum, Mega
Jurnal Rekayasa Proses Vol 18 No 1 (2024): Volume 18, Number 1, 2024
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.90292

Abstract

Sorghum is one type of plant rich in polyphenol chemicals, one of which is proanthocyanidin. The goal of this work was to construct a filtration equation model for the purification of proanthocyanidin compounds in sorghum pericarp extracts utilizing ultrafiltration methods at varied transmembrane pressures and molecular weight cut-off values on asymmetric polyethersulfone (PES) membranes. The pressure difference and size of MWCO were used to determine the rate of cake formation induced by fouling and concentration polarization. The model suggested in this work is based on a compressible filtration model that can represent the decrease in permeability values and the cake formation process produced by the compression of particles deposited on the surface of the membrane. The results reveal that the transmembrane pressure and MWCO considerably affect the performance of the proanthocyanidins separation process employing ultrafiltration membrane technology. The higher the transmembrane pressure, the higher the permeation flow rate. The effect of MWCO on permeability varies with the type of membrane and fluid employed. The larger the MWCO, the higher the permeability since the membrane pores are more significant and more accessible for the liquid to pass through. The high transmembrane pressure not only helps the feed flow swiftly through the membrane and overcomes the resistance but also encourages substance accumulation until the bulge component drops, resulting in a blocking mechanism in the surface or pore of the membrane. The batch filtration model suggested in this work exhibits a reasonably good fit, which can be seen from the projected data values using a model that tends to approach the experimental data values and may be employed as a model that depicts the cake-forming process on the membrane surface.
Fabrication of Nanocellulose-EDTA Composite from Oil Palm Trunks for Cadmium Removal from Aqueous Solutions Tiadeka, Pemta; Ratnasari, Diah; Mustikaningrum, Mega; Amilia Putri, Sasti; Lutiana
Menara Perkebunan Vol. 93 No. 1 (2025): 93(1), 2025
Publisher : INDONESIAN OIL PALM RESEARCH INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v93i1.615

Abstract

The development of nanocellulose-based materials with enhanced properties has garnered significant interest among scientists. Oil palm trunks are a promising source of nanocellulose due to their high cellulose content, excellent adsorption capacity, and abundant availability. Cadmium, a toxic heavy metal, poses serious risks to environmental and human health. It accumulates in fish and plants, entering the human body through the food chain. Since cadmium resists natural degradation, effective removal methods are crucial to mitigate its hazardous effects. In this study, a functionalized nanocellulose composite (NCE) was successfully synthesized using ethylenediaminetetraacetic acid (EDTA) as a chelating agent to enhance cadmium adsorption in aqueous solutions. Analysis with FTIR confirmed the reaction between nanocellulose and EDTA, with characteristic bonds appearing at wavenumber 1100, 1172, and 48 cm⁻¹. Particle size analysis revealed polydisperse nanoparticles, with average sizes of 411.5 nm for nanocellulose and 665.3 nm for NCE. Microscopic imaging showed distinct morphological changes, indicating successful EDTA incorporation into the nanocellulose structure. NCE exhibited a high surface area (2.792 m² g-1). Atomic absorption spectroscopy showed a decrease in cadmium concentration, from 1 ppm to 0.2–0.3 ppm, indicating the adsorption ability of NCE. These findings highlight the potential of NCE for heavy metal remediation in water.
Extraksi Curcuminoid Berbahan Dasar Kunyit Putih Berbasis Ultrasonic Assisted Extraction (UAE) : Studi Kinetika Aradea, Prama Punggi; Mustikaningrum, Mega
Jurnal Integrasi Proses dan Lingkungan Vol. 2 No. 2 (2025): Jurnal Integrasi Proses dan Lingkungan (Issue In Progress)
Publisher : Universitas Muhammadiyah Gresik

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

Abstract

Kunyit putih adalah keluarga dari zingiberaceae, dikenal memiliki manfaat bagi kesehatan dikarenakan terdapat kandungan kurkumin yang memiliki sifat anti inflamasi, antioksidan, antikanker, dan antimikroba. Kurkumin pada kunyit putih bisa didapatkan melalui proses ekstraksi. Ekstraksi ultrasonik merupakan metode ekstraksi paling efektif karena bisa mendapatkan hasil kemurnian ekstraksi yang lebih tinggi dengan waktu yang relatif lebih singkat sehingga metode ultrasonik digunakan pada penelitian ini. Penelitian ini bertujuan untuk mengkaji pengaruh variabel ukuran partikel (60, 80, dan 100 mesh), suhu (40, 50, 60 oC), dan beda pelarut (Etanol dan Methanol) dengan pendekatan kinetika ekstraksi Pseudo second order dan Model Peleg. Hasil penelitian menunjukkan nilai konsentrasi tertinggi didapatkan pada variabel ukuran yaitu 100 mesh dengan konsentrasi kurkumin yang didapat 23,6705 mg/l, dengan variabel suhu optimum pada 60oC senilai 24,0460 mg/l, dan pada pelarut etanol didapatkan konsentrasi senilai 24,0460 mg/l. Pada kinetika ekstraksi didapatkan hasil pada model pseudo second order dengan K sebesar 0,0406 (mg/g.s) kemudian model K sebesar 1,0265 (1/sekon)
Co-Authors Adelina, Dina Aghata, Esteranita Betzy Amelia, Nikma Azrul Amilia Putri, Sasti Aradea, Prama Punggi Arista, Desty Devi Yuni Susanti Diah Ratnasari Fatmawati, Yuni Fikrah Dian Indrawati Sawali Harunur Rosyid Indra Gita Anugrah Johar, Nirmala Lutiana Mahendra, Arya Maulana Moh. Azhar Afandy Mohamad Endy Y Yulianto Muhadhim, Arbi Muslikhin Hidayat Pambudiarto, Benny Arif Pemta Tiadeka Prasakti, Laras Purwaningtyas, Fiska Yohana Romadhoni, Azzumardi Mubarok Setiawan, Oki Wahyudi Budi Sediawan Widyasari Puspa Permata Witra