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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) Jurnal Teknik Kimia

Ika Nawang Puspitawati

Universitas Pembangunan Nasional Veteran Jawa Timur

Author-ID : 3862852

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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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

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

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

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

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

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.

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

Electrocoagulation Technology Based on Aluminum–Zinc Electrodes as an Environmentally Friendly Method for the Removal of Cr3+ and Cd2+ from Batik Wastewater Sani Sani; Sherina Tri Syopianti; Delia Shelamita Prasetya; Ika Nawang Puspitawati
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

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

Characterization of Activated Carbon from Palm Oil Solid Waste Using HCl Activation and Carbonization Technique Sani Sani; Nurul Widji Triana; Ika Nawang Puspitawati; Nur Mila Eka Zaliyanty; Mochammad Arip Pancar Agung
Jurnal Teknik Kimia Vol. 20 No. 2 (2025): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia, Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnaltekkim.v20i2.41

The increasing volume of palm oil solid waste in Indonesia offers an opportunity for valorization into high-value materials. This study explores the potential of converting palm oil waste—comprising empty fruit bunches, shells, and fibers—into activated carbon through hydrochloric acid activation. The carbonization process was varied across five temperature levels (250–450 °C) and durations (60–120 minutes) to determine optimal conditions that meet the criteria of SNI 06-3730-2021. Post-carbonization, chemical activation was conducted using a 20% HCl solution. The most favorable result was obtained at 450 °C for 105 minutes, yielding activated carbon with 81.68% fixed carbon, 3.85% moisture, 10.29% volatile matter, and 4.18% ash content. Furthermore, adsorption capacities reached 763.98 mg/g for iodine and 178.82 mg/g for methylene blue. These findings suggest that palm oil waste can be effectively transformed into activated carbon that satisfies national quality standards.

Characterization Bio-Based Edible Film from Mango Seed Starch and Semi-Refined Carrageenan (Euchema cottonii) Using Sorbitol Plasticizer for Potential Food Contact Materials Sintha Soraya Santi; Ika Nawang Puspitawati; Tim Pasang
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

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

Wet Impregnation Synthesis of Green NCC/TiO2 Hybrid Materials Derived from Oil Palm Empty Fruit Bunches Teodora Merry Meriba Vica Juliana Br Lumbanraja; Raihan Navil Junizal; SINTA SORAYA SANTI; Ika Nawang Puspitawati; Perwitasari; Srie Mulnani; Sani; Adityas Agung Ramandani
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 2 (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.v10i2.1023

The high volume of agricultural waste in Indonesia, particularly Oil Palm Empty Fruit Bunches (OPEFB), presents a significant opportunity for the development of sustainable, high-value materials. While Titanium Dioxide (TiO?) is widely recognized for its photocatalytic efficiency, its practical application is often hindered by particle agglomeration, which reduces its effective surface area. This research aims to overcome these limitations by synthesizing and characterizing a green hybrid material using Nanocrystalline Cellulose (NCC) derived from OPEFB as a renewable support matrix. The methodology involved the isolation of NCC through sequential delignification and acid hydrolysis, followed by the synthesis of the NCC/TiO? nanocomposite via the wet impregnation method. The research utilized Response Surface Methodology (RSM) to optimize the synthesis process. The process variables investigated included the NCC-to-TiO? ratio (10%, 20%, 30%, 40%, and 50% w/w) and stirring time (20, 40, 60, 80, and 100 minutes), with the final nanocomposite mass serving as the primary response. The results showed that the NCC yield from OPEFB was 43.78%. The optimum condition was achieved at an NCC ratio of 50% and a stirring time of 100 minutes, yielding a nanocomposite mass of 8.8975 grams. Characterization results that the high surface area of the NCC successfully stabilized the TiO? particles with particles measuring 27.52 nm. This study demonstrates that the integration of RSM with green material synthesis provides a highly effective and sustainable approach to valorising palm oil waste into functional photocatalytic hybrid materials. Contribution to Sustainable Development Goals (SDGs):SDG 9: Industry, Innovation, and InfrastructureSDG 12: Responsible Consumption and ProductionSDG 13: Climate ActionSDG 15: Life on Land

Optimization of Ethanol Production via an Adsorption Process Using Molecular Sieve 3A with the Differential Experts Method Syahwaliza Chaniatul Chabibbah; Akhmad Syafiq Hasbi; Ni Ketut Sari; Ika Nawang Puspitawati; Ely Kurniati; Sintha Soraya Santi
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 2 (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.v10i2.1049

Ethanol has significant potential as a renewable energy source that can be utilized as an environmentally friendly alternative fuel. However, ethanol produced by conventional distillation still reaches a maximum purity of only 95–96% due to the formation of an ethanol–water azeotrope, requiring further purification to obtain fuel-grade ethanol. This study aimed to enhance ethanol purity via adsorption distillation with a 3A molecular sieve and to determine the optimal operating conditions using Response Surface Methodology (RSM). The research variables consisted of 3A molecular sieve weights of 20, 40, 60, 80, and 100 grams, as well as reflux ratios of 0.2, 0.4, 0.6, 0.8, and 1 mL/s. The adsorption distillation process was conducted at 78°C using an adsorption distillation apparatus. Experimental data were analysed using Design-Expert 13 software using a Central Composite Design (CCD) with 11 experimental runs. The results showed that increasing the molecular sieve weight and reflux ratio positively affected ethanol concentration. The optimum condition was achieved at a molecular sieve weight of 100 grams and a reflux ratio of 1 mL/s, resulting in an ethanol concentration of 99.9% with a desirability value of 1.000. These findings indicate that the 3A molecular sieve is effective in improving ethanol purity to meet the fuel-grade standard specified in SNI 7390:2012. Contribution to Sustainable Development Goals (SDGs):SDG 7 – Affordable and Clean EnergySDG 6: Clean Water and SanitationSDG 9: Industry, Innovation and InfrastructureSDG 13 – Climate Action

Co-Authors Abdul Rachman Wirayudha Abdullah Tsani M.N.K Achmad Achmad Achmad Rahditya Viman Anggoro Adityas Agung Ramandani Ahmad Thobroni Akbar Akhmad Syafiq Hasbi Alif Julian Putra Rahmandika Ananda Arif Rochman 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 Caecilia Pujiastuti Caecillia P udjiastuti Delia Shelamita Prasetya Dendy Wahyu Raditya Dimas Nur Arifianto Diyah Suci Perwitasari Dyah Suci Perwitasari Ely Kurniati Erwan Adi Saputro Erwan Adi Saputro Erwan Adi Saputro Febry Widiatniko Handy Handy, Febry Widiatniko Hasanah, Rofidatul Ika Favia Anggraeni Ika Yuliana Wati 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 M. Fikri M.N.K, Abdullah Tsani Moch Akbar Munin Putra Mochammad Arip Pancar Agung Moh Nur Fuadzi Mohamad Nabhan Putra Redian Muljani, Sri Mutasim Billah Nazila Aulya Rahman Ni Ketut Sari Novan Sandhi Pradana Novel Karaman Nungki Mela Sari Nur Mila Eka Zaliyanty Nurul Widji Triana Padmasari, Rahmita Perwitasari Prakoso, Satryo Arya Pramuji, Faiq Hawaari Ahmad Putri Sinta Dewi Sinaga Rahmita Padmasari Raihan Navil Junizal Ramandani, Adityas Agung Rasendriya Putra Reswara Rosavinda Nurfauziah S Suprihatin Sagala, Maria Tania Agustia Sani Sani Sani Sani Sani Sani Sani Sari, Dewa Ayu Made Dearwita Sherina Tri Syopianti SINTA SORAYA SANTI Sintha Soraya Santi Sintha Soraya Santi Sintha Soraya Santi Sirait, Esterly Septiana Srie Mulnani Sulaiman, Yusri Risyad Suprihatin Suprihatin Susilowati Syahwaliza Chaniatul Chabibbah Tauhid, Aziz Hafizh Teodora Merry Meriba Vica Juliana Br Lumbanraja Tiffanie Dewi Arifilla Tim Pasang Wahyu Dwi Lestari Yudhistira, Nashrulfatih Yusratus Sakinah

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