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All Journal JURNAL INTEGRASI PROSES Jurnal Penelitian Pendidikan IPA (JPPIPA) YUSTISI Al-Ard: Jurnal Teknik Lingkungan ASEAN Journal of Chemical Engineering G-Tech : Jurnal Teknologi Terapan Nusantara Science and Technology Proceedings Yustisi: Jurnal Hukum dan Hukum Islam ABSYARA: Jurnal Pengabdian Pada Masyarakat International Journal of Eco-Innovation in Science and Engineering (IJEISE) AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Pengbdian Teknik Mesin Archive: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas Le Mujtamak Madani: Jurnal Pengabdian Masyarakat dan Kewirausahaan Environation (Environmental Engineering Journal of Community Dedication)
Ika Nawang Puspitawati
Chemical Engineering Department, Engineering Faculty, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Characterization Bio-Based Edible Film from Mango Seed Starch and Semi-Refined Carrageenan (Euchema cottonii) Using Sorbitol Plasticizer for Potential Food Contact Materials Santi, Sintha Soraya; Puspitawati, Ika Nawang; Pasang, Tim
Jurnal Penelitian Pendidikan IPA Vol 10 No 10 (2024): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i10.8601

Abstract

Meanwhile, Semi-Refined Carrageenan (SRC) could be combined with starch as the base material for edible film fabrication to increase its tensile strength. This study aimed to identify edible film by synthesizing SRC and mango seed starch with plasticizer sorbitol, which could be safe for consumption in food packaging. The process of making edible film consists of three steps: extracting Eucheuma cottonii seaweed, making starch from mango seeds, and making edible film. The method used was the solution casting method, with a ratio of SRC: starch of mango seeds, namely 1: 0; 0.7: 0.3; and 0: 1 (w / w) and sorbitol concentrations of 20, 30, 40, 50, and 60% (w/w). This research shows that increasing sorbitol could decrease the tensile strength but increase the elongation and solubility of the edible film. As well as the combination of SRC and mango seed starch can produce edible films with higher characteristics than edible films based only on SRC or mango seed starch. The results of selecting the best conditions for an edible film based on the Japanese Industrial Standard (JIS) are the concentration ratio of SRC: mango seed starch (0.7: 0.3) and 30% sorbitol concentration with a thickness value of 0.22 mm, tensile strength 4.81 MPa, 28.50% elongation and 68.44% solubility
Penurunan Kadar COD dan BOD Pada Limbah Cair PT Candi Jaya Amerta Menggunakan Adsorben dari Abu Layang (Fly Ash) dengan Proses Adsorpsi Secara Kolom Handy, Febry Widiatniko; Juwana, Krishna Rahmad; Sani; Puspitawati, Ika Nawang
Al-Ard: Jurnal Teknik Lingkungan Vol. 10 No. 1 (2024): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v10i1.2113

Abstract

PT. Candi Jaya Amerta is an industry that produces fly ash from coal combustion in boilers and wastewater from its production processes. The utilization of fly ash in this industry has not been well optimized, and the wastewater is characterised by elevated concentrations of organic matter, primarily generated from shrimp cracker production. High organic content in wastewater can lead to environmental pollution. Goal of this research is to determine the effect of sampling time on the reduction of Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) levels in the wastewater of PT. Candi Jaya Amerta using fly ash adsorbent through a column adsorption process system, employing the Yoon-Nelson, Adam-Bohart, and Thomas approaches. The variables employed in this study are sampling times of 20, 40, 60, 80, and 100 minutes, and adsorbent heights of 9, 13, 17, 21, and 25 cm. The research findings show that the optimal adsorbent height for reducing COD is 21 cm, with a reduction percentage of 88.2705% and a COD adsorption capacity of 7.2593 mg/g at a sampling time of 60 minutes. Meanwhile, the optimal adsorbent height for reducing BOD is 25 cm, with a reduction percentage of 98.1509% and a BOD adsorption capacity of 87.4255 mg/g at a sampling time of 60 minutes.
Synthesis of Ammonium Silicate Liquid Fertilizer from Rice Husk Ash Santi, Sintha Soraya; Pramuji, Faiq Hawaari Ahmad; Juventino, Syahdhan Adiyah Islami; Puspitawati, Ika Nawang
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 3 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i3.822

Abstract

This study aims to synthesise liquid ammonium silicate fertiliser ((NH?)?SiO?) from rice husk ash and to determine the effects of varying ammonium hydroxide (NH?OH) concentration and reaction temperature on the resulting silica (Si) and nitrogen (N) content. Rice husk ash is used as a silica source because it contains high levels of SiO?, up to 82%. The research process includes three main stages: raw material preparation; silica extraction using 10% NaOH at 80°C for 120 minutes; and a synthesis reaction between the extracted silica and an NH?OH solution (5–25%) at 30–110°C for 60 minutes. Silica content analysis was carried out using UV-Vis spectrophotometry, while nitrogen content was analyzed using the Kjeldahl method. The results showed that increasing NH?OH concentration and reaction temperature significantly increased silica content, while increasing temperature tended to decrease nitrogen content due to ammonia volatility. The best conditions were obtained at a NH?OH concentration of 25%, a reaction temperature of 70°C, a silica content of 5.2701%, and a nitrogen content of 17.1637%. The results meet the SNI 02-6681-2002 standard for liquid macro compound fertilizers, which requires a minimum content of 4% for silica and nitrogen. Thus, rice husk ash has great potential as an alternative raw material for the manufacture of environmentally friendly ammonium silicate liquid fertilizers. Contribution to Sustainable Development Goals (SDGs):SDG 2: Zero HungerSDG 9: Industry, Innovation, and InfrastructureSDG 12: Responsible Consumption and ProductionSDG 13: Climate Action
Optimization of Biodiesel Synthesis from Waste Cooking Oil By Transesterification Process in A Microwave Wati, Ika Yuliana; Nurfauziah, Rosavinda; Susilowati; Puspitawati, Ika Nawang; Perwitasari, Diyah Suci; Suprihatin; Ramandani, Adityas Agung
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 3 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i3.867

Abstract

The rising energy demand in Indonesia is driving the development of biodiesel as a sustainable, renewable fuel. Waste cooking oil has the potential as a biodiesel feedstock due to its abundant availability and relatively low cost. Biodiesel is generally produced via transesterification, but conventional heating methods have limitations, such as long reaction times and high energy consumption. Therefore, microwave-based heating is used as an alternative to improve process efficiency through rapid, even heating. This research aims to' optimize biodiesel synthesis from used cooking oil using a microwave-assisted transesterification process with the Response Surface Methodology (RSM) and Analysis of Variance (ANOVA) approaches. The process variables studied include catalyst' concentration (1', 2, 3, 4, and' 5%w/w) and' reaction time (2, 4, 6, 8, and 10 minutes), with biodiesel yield as the main response. A mathematical model was developed using an appropriate experimental design and statistically validated using ANOVA to assess the model's significance and the effects of interactions between variables. The research results showed the highest biodiesel yield at 4% catalyst with a reaction time of 6 minutes. The RSM method, validated by ANOVA, was effective in determining optimum operating conditions and increasing biodiesel yield. This approach has the potential to be applied as a highly effective and sustainable method for biodiesel production from used cooking oil. Contribution to Sustainable Development Goals (SDGs):SDG 7: Affordable and Clean EnergySDG 12: Responsible Consumption and ProductionSDG 13: Climate ActionSDG 15: Life on' Land
Optimization of alpha-Fe2O3 Synthesis from Iron Sand via Extraction–Precipitation using Response Surface Methodology Yudhistira, Nashrulfatih; Padmasari, Rahmita; Puspitawati, Ika Nawang; Muljani, Sri; Sani, Sani; Ramandani, Adityas Agung
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 1 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i1.889

Abstract

The limited utilization of abundant iron sand in Indonesia highlights the need for efficient methods to produce value-added iron oxide materials. Among them, haematite (alpha-Fe2O3) has promising applications in energy, catalysis, and electronics, but its yield and quality depend strongly on process parameters, such as precipitation pH and calcination temperature. This study aims to optimize the synthesis of alpha-Fe2O3 from iron sand using the extraction–precipitation method by investigating the effects of precipitation pH and calcination temperature on the product yield. Iron sand was dissolved in hydrochloric acid, precipitated with potassium hydroxide at pH 5–9, and calcined at 400–800°C. Two-way ANOVA and response surface methodology (RSM) were applied to evaluate parameter effects and interactions. Results showed that both precipitation pH and calcination temperature significantly influenced yield, with optimum conditions at pH 7 and 600°C producing 18% alpha-Fe2O3. The quadratic RSM model accurately described the process and identified the optimum region. These findings demonstrate the potential of using local iron sand for the sustainable production of high-quality alpha-Fe2O3 for functional applications. Contribution to Sustainable Development Goals (SDGs):SDG 7: Affordable and Clean EnergySDG 9: Industry, Innovation and InfrastructureSDG 12: Responsible Consumption and ProductionSDG 13: Climate Action
Sosialisasi Digitalisasi Marketing UMKM Desa Karangkuten Kecamatan Gondang Kabupaten Mojokerto: Socialization of Marketing Strategies for MSMEs in Karangkuten Village Gondang District Mojokerto Regency Sulaiman, Yusri Risyad; Prakoso, Satryo Arya; Sani, Sani; Puspitawati, Ika Nawang
Jurnal Abdimas Le Mujtamak Vol. 5 No. 2 (2025): Le MUJTAMAK 2025: Juli - Desember
Publisher : Universitas Islam Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46257/jal.v5i2.1259

Abstract

Permasalahan utama yang dihadapi oleh pelaku UMKM di Desa Karangkuten, Kecamatan Gondang, Kabupaten Mojokerto adalah kurangnya pemahaman dalam menerapkan strategi pemasaran digital yang efektif. Tujuan kegiatan ini adalah memberikan sosialisasi dan pelatihan kepada pelaku UMKM terkait pemanfaatan media sosial dan teknologi kecerdasan buatan (AI) dalam menunjang pemasaran produk. Metode yang digunakan adalah penyuluhan langsung disertai dengan penyebaran kuisioner untuk mengetahui kondisi aktual dan kebutuhan peserta. Hasil kegiatan menunjukkan bahwa mayoritas pelaku usaha masih menggunakan metode pemasaran konvensional dan belum mengoptimalkan platform digital, meskipun sebagian telah memanfaatkan WhatsApp dan Facebook. Sosialisasi ini berhasil meningkatkan kesadaran peserta tentang pentingnya digital marketing serta mendorong ketertarikan terhadap pelatihan lebih lanjut, khususnya dalam hal fotografi produk dan penggunaan AI seperti ChatGPT. Kegiatan ini menjadi langkah awal dalam mendorong transformasi digital bagi UMKM agar mampu bersaing di era industri 4.0. 
PEMBATASAN KONSTITUSIONAL TERHADAP HAK PREROGATIF PRESIDEN DALAM PENYUSUNAN KABINET DI INDONESIA Nurizki, Nawang Ika; Achmad, Achmad; Isharyanto, Isharyanto
YUSTISI Vol 13 No 1 (2026)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/yustisi.v13i1.22144

Abstract

Penelitian ini bertujuan untuk menganalisis Pembatasan Konstitusional terhadap Hak Prerogatif Presiden dalam Penyusunan kabinet di Indonesia. Penelitian dilakukan dengan metode penelitian hukum normatif melalui pendekatan perudang-undangan dan konseptual dengan menggunakan teknik analisis deskriptif untuk menganalisis bahan hukum primer dan sekunder. Hasil penelitian menunjukkan bahwa kewenangan Presiden untuk membentuk memilih menteri dan menentukan jumlah kementerian tidak mutlak. Presiden harus tetap tunduk pada batasan konstitusional, mekanisme checks and balances dan ketentuan undang-undang, seperti UU No. 39 Tahun 2008 dan UU No. 61 Tahun 2024. Adanya pembatasan ini untuk mencegah terjadinya kesewenang-wenangan serta menjaga efisiensi birokrasi pemerintahan. Penelitian ini menegaskan bahwa pelaksanaan hak prerogatif Presiden harus tetap dalam koridor hukum tata negara sehingga tidak menjadi kekuasaan yang absolut. Penelitian ini memberikan pemahaman mengenai keseimbangan antara diskresi eksekutif dan pembatasan hukum dan implikasinya dalam penyelenggaraan negara. Dengan demikian, Pembatasan Konstitusional terhadap hak prerogatif dalam penyusunan kabinet di Indonesia sangat diperlukan untuk menjamin penyelenggaraan pemerintahan yang akuntabel dan berorientasi pada kepentingan publik.
PEMBATASAN KONSTITUSIONAL TERHADAP HAK PREROGATIF PRESIDEN DALAM PENYUSUNAN KABINET DI INDONESIA Nurizki, Nawang Ika; Achmad, Achmad; Isharyanto, Isharyanto
YUSTISI Vol 13 No 1 (2026)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/yustisi.v13i1.22144

Abstract

Penelitian ini bertujuan untuk menganalisis Pembatasan Konstitusional terhadap Hak Prerogatif Presiden dalam Penyusunan kabinet di Indonesia. Penelitian dilakukan dengan metode penelitian hukum normatif melalui pendekatan perudang-undangan dan konseptual dengan menggunakan teknik analisis deskriptif untuk menganalisis bahan hukum primer dan sekunder. Hasil penelitian menunjukkan bahwa kewenangan Presiden untuk membentuk memilih menteri dan menentukan jumlah kementerian tidak mutlak. Presiden harus tetap tunduk pada batasan konstitusional, mekanisme checks and balances dan ketentuan undang-undang, seperti UU No. 39 Tahun 2008 dan UU No. 61 Tahun 2024. Adanya pembatasan ini untuk mencegah terjadinya kesewenang-wenangan serta menjaga efisiensi birokrasi pemerintahan. Penelitian ini menegaskan bahwa pelaksanaan hak prerogatif Presiden harus tetap dalam koridor hukum tata negara sehingga tidak menjadi kekuasaan yang absolut. Penelitian ini memberikan pemahaman mengenai keseimbangan antara diskresi eksekutif dan pembatasan hukum dan implikasinya dalam penyelenggaraan negara. Dengan demikian, Pembatasan Konstitusional terhadap hak prerogatif dalam penyusunan kabinet di Indonesia sangat diperlukan untuk menjamin penyelenggaraan pemerintahan yang akuntabel dan berorientasi pada kepentingan publik.
PENGENALAN PEMANFAATAN EKSTRAK SERAI WANGI SEBAGAI PESTISIDA ORGANIK DI DESA BOCEK KARANGPLOSO MALANG Nurmawati, Ardika; Puspitawati, Ika Nawang; Anggraeni, Ika Favia; Raditya, Dendy Wahyu; Pradana, Novan Sandhi; Saputro, Erwan Adi
ABSYARA: Jurnal Pengabdian Pada Masayarakat Vol 3 No 1 (2022): ABSYARA: Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/ab.v3i1.5844

Abstract

Bocek Village, located in Karangploso District, Malang Regency, is one of the villages known for its chili production. However, the production of chili plants in this village is often affected by diseases caused by pests such as the fungus Colletotrichum spp., which will cause anthracnose (Patek) disease. This disease can cause defects in chili, reducing the quality of chili production. The farmers have handled the handling by using chemical pesticides, which are considered less effective and harm the environment. One solution that can be used is to use extracts from the citronella to be used as organic pesticides. This community service activity aims to introduce organic pesticides with citronella oil as raw material to the Tri Rejeki farmers group in Bocek Village. The socialization activity was carried out using the lecture method with the material covering the introduction of pesticides, the difference between chemical and organic pesticides, extraction of essential oils with a simple method, and the production process of organic pesticides with citronella oil. An evaluation of the participants was also carried out through a questionnaire given before and after the socialization. After the socialization was conducted, participants understood more about organic pesticides and how to produce them
Electrocoagulation Technology Based on Aluminum–Zinc Electrodes as an Environmentally Friendly Method for the Removal of Cr3+ and Cd2+ from Batik Wastewater Sani, Sani; Syopianti, Sherina Tri; Prasetya, Delia Shelamita; Puspitawati, Ika Nawang
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 1 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i1.945

Abstract

Industrial batik wastewater often contains elevated concentrations of heavy metals, particularly Cr3+ and Cd2+, which pose serious risks to aquatic environments due to their toxicity, persistence, and non-biodegradable nature. Effective treatment technologies are therefore essential. Electrocoagulation represents a promising approach, as it is a redox-based process that employs the electrolytic dissolution of Al–Zn electrodes to generate in situ aluminum hydroxide coagulants. These coagulants effectively adsorb, destabilise, and precipitate dissolved heavy metal ions. This study evaluates the effects of applied voltage and electrolysis time on the performance of the electrocoagulation process for heavy metal removal from batik wastewater under batch conditions. Experiments were conducted at voltages ranging from 10 to 50 V, electrolysis times of 80–160 minutes, and an electrode spacing of 2 cm. Optimal performance was achieved at 50 V and 160 minutes, reducing Cr3+ concentrations from 3.78 mg/L to 0.031 mg/L, Cd2+ from 2.55 mg/L to 0.021 mg/L, and total suspended solids (TSS) from 203.77 mg/L to 39 mg/L. These findings demonstrate that electrocoagulation offers significant advantages, including in situ coagulant generation without external chemical addition, formation of stable flocs, and high efficiency in separating heavy metal contaminants. Contribution to Sustainable Development Goals (SDGs):SDG 6: Clean Water and SanitationSDG 9: Industry, Innovation, and InfrastructureSDG 12: Responsible Consumption and Production
Co-Authors Abdul Rachman Wirayudha Abdullah Tsani M.N.K Achmad Achmad Achmad Rahditya Viman Anggoro Ahmad Thobroni Akbar Alif Julian Putra Rahmandika Anggraeni, Ika Favia Anita Ristikawati Annisa Mutiara Salma Haque Anwar, Rangga Febry AR Yelvia AR Yelvia Sunarti AR Yelvia Sunarti Ardika Nurmawati, Ardika Aristio, Rivaldi Arke, Nadya Ramadhani Aziz Hafizh Tauhid Caecillia P udjiastuti Dimas Nur Arifianto Dyah Suci Perwitasari Erwan Adi Saputro Erwan Adi Saputro Erwan Adi Saputro Febry Widiatniko Handy Handy, Febry Widiatniko Hasanah, Rofidatul Isharyanto Isharyanto Juventino, Syahdhan Adiyah Islami Juwana, Krishna Rahmad Kindriari Nurma Wahyusi Laili Mabrur Rohma Lintang Sekar Wulandari Setyabudi Lucky Indrati Utami Lucky Indrati Utami Luluk Edahwati Luluk edahwati M. Fikri M.N.K, Abdullah Tsani Moch Akbar Munin Putra Moh Nur Fuadzi Mohamad Nabhan Putra Redian Muljani, Sri Mutasim Billah Novel Karaman Nungki Mela Sari Nurfauziah, Rosavinda Padmasari, Rahmita Pasang, Tim Perwitasari, Diyah Suci Pradana, Novan Sandhi Prakoso, Satryo Arya Pramuji, Faiq Hawaari Ahmad Prasetya, Delia Shelamita Pujiastuti, Caecilia Putri Sinta Dewi Sinaga Raditya, Dendy Wahyu Rahman, Nazila Aulya Rahmita Padmasari Ramandani, Adityas Agung Rasendriya Putra Reswara Rochman, Ananda Arif S Suprihatin Sagala, Maria Tania Agustia Sani Sani Sari, Dewa Ayu Made Dearwita Sintha Soraya Santi Sirait, Esterly Septiana Sulaiman, Yusri Risyad Suprihatin Susilowati Syopianti, Sherina Tri Tauhid, Aziz Hafizh Tiffanie Dewi Arifilla Wahyu Dwi Lestari Wati, Ika Yuliana Yudhistira, Nashrulfatih Yusratus Sakinah