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All Journal Jurnal Teknik Kimia Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan International Journal of Eco-Innovation in Science and Engineering (IJEISE) Equilibrium Journal of Chemical Engineering Journal of Fundamentals and Applications of Chemical Engineering
Pertiwi, Beta Cahaya
Program Studi Teknik Kimia, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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PREPARATION OF CALCIUM-POTASSIUM-PHOSPHORUS (Ca-K-P) AS A MATERIAL FOR SOIL AND PLANT IMPROVEMENT USING THE PRECIPITATION METHOD Muljani, Srie; Matovanni, Maudy Pratiwi Novia; Pertiwi, Beta Cahaya; Novanto, Satria Agung; Yulia S, Putri Arysanti
Jurnal Teknik Kimia Vol 19, No 2 (2025)
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v19i2.5072

Abstract

Kalsium karbonat (CaCO3) merupakan material yang banyak terdapat di Indonesia, baik dalam bentuk batuan maupun dalam berbagai jenis limbah cangkang kerang. Penelitian ini memanfaatkan batuan CaCO3 sebagai sumber CaO untuk pembuatan komposit kalsium-kalium-fosfat (Ca-K-P) dengan metode presipitasi. Komposit Ca-K-P dapat digunakan untuk memperbaiki kualitas tanah masam, perakaran dan kualitas tanaman karena adanya unsur kalsium (Ca), kalium (K) dan fosfor (P). Unsur fosfor merupakan hasil reaksi kimia antara CaCO3 dengan asam fosfat encer (H3PO4) membentuk larutan kalsium fosfat. Proses presipitasi terjadi ketika larutan KOH ditambahkan ke dalam larutan Kalsium Fosfat hingga mencapai tingkat keasaman pada kisaran pH 3 – 11. Suhu sintering pada kisaran 400 – 700℃. Pada pH 10 dan suhu kalsinasi 600℃, diperoleh komposisi produk berupa kalsium oksida (CaO) sebesar 44,60%, kalium oksida (K2O) sebesar 6,65% dan fosfor (P2O5) sebesar 38,58%.
Comparative Analysis of Biomass-Based Adsorbents for Heavy Metal Ion Removal Pertiwi, Beta Cahaya; Firginia, Noni; Satyasyauqi, Muhammad Fauzan; Matovanni, Maudy Pratiwi Novia
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 6 No. 1 (2025): IJEISE
Publisher : UPN Veteran Jatim

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Abstract

This study investigates the adsorption capabilities of various biomass-based adsorbents for the removal of heavy metal ions from industrial wastewater. This research focusses on the comparative effectiveness of chemical and steam activation methods. Steam-activated adsorbents derived from wine sector waste exhibited a maximum adsorption capacity for Pb²⁺ ions of 399 mg/g. Adsorbents derived from walnut shells and chemically activated with HNO₃ ions exhibited a maximum adsorption capacity of 204.08 mg/g for Cu²⁺ ions. Steam-activated spruce sawdust adsorbents achieved optimal adsorption of Fe²⁺ ions at a capacity of 329 mg/g. The adsorption capacity for Cd⁺ ions was determined to be 116 mg/g, achieved through microwave-assisted steam activation of palm kernel shell-based adsorbents. The research emphasizes the necessity of selecting appropriate activation techniques based on specific heavy metal ions and the desired adsorption properties. Additionally, there is a necessity for further investigation into the processes of pore structure development and their impact on adsorption effectiveness. The findings suggest that developing adsorbent from biomass waste represents a sustainable and effective method for reducing heavy metal contamination in industrial wastewater, thereby advancing environmental protection and resource efficiency.
Biopolymer-based Edible Film for Food Packaging Application : Review Matovanni, Maudy Pratiwi Novia; Jannah, Erisa Nur; Utami, Aliyya Nisa Budi; Maritza, Damara Ramadhani; Pertiwi, Beta Cahaya
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 6 No. 2 (2025): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v6i2.148

Abstract

Edible films serve as an effective barrier to prevent mass transfer between the product and its environment. This innovation facilitates the development of environmentally sustainable food packaging alternatives that promote the efficient use of natural resources. A variety of biopolymers are utilized in the formulation of edible films, primarily polysaccharides, proteins, and composite materials. Polysaccharides can be further categorized according to their origin, including plant, animal, marine, microbial, and industrial waste sources. Proteins are generally classified into plant- and animal-based categories. Composite films, which combine multiple biopolymer types, offer enhanced structural properties. The application of biopolymer-based edible films presents a promising strategy for mitigating commercial plastic waste accumulation. Nevertheless, the incorporation of additives—such as plasticizers, antioxidants, and antimicrobial agents—is essential to enhance film properties and ensure compliance with quality standards for food packaging application
Inovasi Pembuatan Biobriket dari Limbah Kotoran Sapi di Desa Kalipucang, Kecamatan Tutur, Pasuruan Erlinda, Riska Melati; Annisa Anwar, Miranda; Pujiastuti, Caecilia; Pertiwi, Beta Cahaya
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 11 No. 3 (2025): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.11.3.534-542

Abstract

The community development program implemented in Kalipucang Village, Tutur District, Pasuruan Regency, aims to assist residents in utilizing cow manure waste by producing environmentally friendly biobriquettes. The activities involved a series of steps, including drying the cow manure, burning, mixing with binders, and molding the biobriquettes. The results of this program show that biobriquettes made from cow manure have a longer burning time compared to conventional charcoal. This program has successfully enhanced residents' skills in waste management, opened new economic opportunities, and promoted the use of alternative energy sources. Overall, the program demonstrates that support from the village government and continuous training is essential to ensure the ongoing development and benefits of the biobriquette enterprise in the village.
Comparative Analysis of Hydrogel Polymer in Smartphone Devices : Thermal Stability Focused Andriani, Fitria Dwi; Matovanni, Maudy Pratiwi Novia; Dharmawan, Valda Ashila; Fata, Muhammad Zainul; Marchanda, Ratu Zosa; Pertiwi, Beta Cahaya
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 2 (2025): In Press
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i2.23235

Abstract

Hydrogel polymers have emerged as transformative materials in the field of flexible electronics, offering unparalleled properties such as high water content, mechanical flexibility, and tunable conductivity. This review critically examines the thermal stability of hydrogels and their applications in electronic devices, with a focus on smartphone technology. Despite their inherent susceptibility to thermal fluctuations—ranging from freezing-induced brittleness to dehydration at elevated temperatures—recent advancements have significantly enhanced their resilience.  Strategies such as incorporating cryoprotectants (e.g., glycerol, ionic liquids), optimizing crosslinked networks, and balancing hydrophilic-hydrophobic interactions have proven effective in mitigating these challenges. These innovations enable hydrogels to maintain functionality in extreme environments, making them ideal for flexible sensors, energy storage devices, and touch screens. Notably, thermoresponsive hydrogels, which exhibit reversible phase transitions at critical solution temperatures, are paving the way for adaptive cooling systems and dynamic interfaces in next-generation electronics. The integration of hydrogels into electronic devices not only addresses thermal management issues but also unlocks new possibilities for wearable and biodegradable technologies. This review underscores the interdisciplinary potential of hydrogels, highlighting their role in advancing sustainable, high-performance electronic systems while identifying future research directions to overcome existing limitations.
Peningkatan pemahaman lingkungan melalui pemanfaatan limbah minyak jelantah di Desa Segorotambak Naufal Dzikri Musyaffa; Maudy Pratiwi Novia Matovanni; Bernice Barbarossa Adine Romansa Patty; Aynia Ayu Nur Afifah; Beta Cahaya Pertiwi
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 6 (2025): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i6.34350

Abstract

Abstrak Limbah minyak jelantah merupakan permasalahan lingkungan yang signifikan di Desa Segorotambak, Kecamatan Sedati, Kabupaten Sidoarjo. Masyarakat umumnya membuang limbah minyak jelantah ke saluran air atau menjualnya kepada tengkulak, yang berpotensi menimbulkan risiko kesehatan dan pencemaran lingkungan. Kegiatan pengabdian ini bertujuan untuk meningkatkan kesadaran dan keterampilan masyarakat dalam mengelola limbah minyak jelantah menjadi produk bernilai tambah berupa lilin aroma terapi dan sabun cuci. Kegiatan pengabdian dilakukan pada Sabtu, 31 Mei 2025 di Balai Desa Segorotambak dengan menggunakan metode survei, sosialisasi, pelatihan praktik langsung, serta evaluasi melalui pre-test dan post-test menggunakan kuesioner. Proses pelatihan mencakup tahap pemurnian minyak jelantah, pembuatan lilin aromatik dengan campuran parafin dan minyak jelantah, pembuatan sabun melalui proses saponifikasi, serta sosialisasi penjualan online pada e-commerce. Hasil kegiatan menunjukkan adanya peningkatan pemahaman masyarakat terhadap bahaya dan pengelolaan minyak jelantah, serta kemampuan mereka dalam memproduksi dan memasarkan produk hasil olahan menjadi 95%. Kegiatan ini tidak hanya berkontribusi pada pengurangan limbah, tetapi juga membuka peluang ekonomi dan pemberdayaan komunitas. Program ini diharapkan dapat berkelanjutan dengan dukungan evaluasi dan inovasi lanjutan. Kata kunci: limbah minyak jelantah; sabun cuci; lilin aroma terapi; pemasaran digital; ekonomi hijau Abstract Waste cooking oil is a significant environmental problem in Segorotambak Village, Sedati District, Sidoarjo Regency. People generally dump the waste into drains or sell it to middlemen, which has the potential to cause health risks and environmental pollution. This community service activity aims to increase community awareness and skills in managing waste cooking oil into value-added products in the form of aromatic candles and soap. The methods used include surveys, socialization, direct practice training, and evaluation through pre-tests and post-tests using questionnaires. The training process includes the stages of refining used cooking oil, making aromatic candles with a mixture of paraffin and used cooking oil, making soap through the saponification process, and socializing online sales on e-commerce. The results of the activity showed an increase in community understanding of the dangers and management of used cooking oil, as well as their ability to produce and market processed products. This activity not only contributes to waste reduction, but also opens up economic opportunities and community empowerment. This program is expected to be sustainable with the support of further evaluation and innovation. Keywords: waste of cooking oil; solid soap; aromatherapy candle; digital marketing; green economic
Characteristic of the CaO-MgO Material Derived from Dolomite via Precipitation-Dehydration Method Matovanni, Maudy Pratiwi Novia; Sumada, Ketut; Muljani, Srie; Pertiwi, Beta Cahaya
Equilibrium Journal of Chemical Engineering Vol 9, No 1 (2025): Volume 9, No 1 July 2025
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v9i1.104095

Abstract

Abstract. This research utilized dolomite rock (CaMg(CO2)2) to produce CaO-MgO material using precipitation-dehydration. The precipitation-dehydration method was carried out by dissolving dolomite in 10% hydrochloric acid (HCl) solvent and precipitating in 2 N sodium hydroxide (NaOH) solution at a temperature of 80 oC. The resulting products were analyzed using Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX) and Brunauer-Emmett-Teller (BET). The acidity level of the solution was analyzed by using a pH meter. The analysis results using SEM-EDX show that the material has a characteristic chemical composition with a Ca/Mg ratio less than 1. The results of BET show that the average surface area, average pore volume, average pore size and average particle diameter are 71.1213 m2/g, 0.1081 cc/g, 20.5165 nm, and 36 nm, respectively. The solution's acidity (pH level) in precipitation-dehydration is 8-8.5. It is identified that precipitation-dehydration can be used for CaO-MgO recovery and further application in catalyst materials.Keywords:Dolomite rock, Calcium oxide, Magnesium oxide, Precipitation-dehydration
Machine Learning vs. Real-World Data: Assessing ANN Performance in COD Removal in Animal Feed Processing Wastewater Pertiwi, Beta Cahaya; Tirkaamiana, Dean; Matovanni, Maudy Pratiwi Novia; Sumada, Ketut
Equilibrium Journal of Chemical Engineering Vol 9, No 1 (2025): Volume 9, No 1 July 2025
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v9i1.104192

Abstract

This research established an artificial neural network (ANN) aimed at optimizing ozonation for chemical oxygen demand (COD) reduction in animal feed plant wastewater. Experimental data (200-1000 mg/L COD, 100-180 min treatment) were used to train a 10-8 neuron artificial neural network, resulting in a predicted removal rate of 97.4% at 180 minutes for 1000 mg/L COD (MSE=15.9, R²=0.34).  Experiments indicated a marginally higher efficiency of 97.83% at 160 minutes; however, the ANN's conservative recommendation of 180 minutes is more appropriate for industrial scalability. The model successfully identified non-linear degradation patterns of recalcitrant organics, illustrating the potential of artificial neural networks for optimizing wastewater treatment.  This study connects laboratory research with industrial application via machine learning, establishing a framework that balances efficiency and operational practicality. Future improvements may integrate real-time process data to increase accuracy.
Co-Authors Andriani, Fitria Dwi Annisa Anwar, Miranda Aynia Ayu Nur Afifah Bernice Barbarossa Adine Romansa Patty Dharmawan, Valda Ashila Erlinda, Riska Melati Fata, Muhammad Zainul Firginia, Noni Jannah, Erisa Nur Ketut Sumada Marchanda, Ratu Zosa Maritza, Damara Ramadhani Matovanni, Maudy Pratiwi Novia Matovanni, Maudy Pratiwi Novia Naufal Dzikri Musyaffa Novanto, Satria Agung Pujiastuti, Caecilia Satyasyauqi, Muhammad Fauzan SRIE MULJANI Tirkaamiana, Dean Utami, Aliyya Nisa Budi Yulia S, Putri Arysanti