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All Journal Jurnal Teknik Kimia Jurnal technoscientia AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat J-MKLI (Jurnal Manajemen dan Kearifan Lokal Indonesia) Jurnal Penamas Adi Buana Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Komunitas: Jurnal Pengabidian Kepada Masyarakat Buletin Profesi Insinyur Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) JURNAL TEKNOLOGI TECHNOSCIENTIA Journal of Sustainable Technology and Applied Science International Journal of Eco-Innovation in Science and Engineering (IJEISE) Journal of Multidisciplinary Applied Natural Science Journal of Mechanical Engineering, Science, and Innovation Jurnal Ilmiah Berkala Sains dan Terapan Kimia Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri Jurnal ATMOSPHERE Berita Biologi
Nanik Astuti Rahman
Institut Teknologi Nasional Malang
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering 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 Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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PRODUKSI MINUMAN INSTAN ROSELA DENGAN PENGONTROLAN PENGAWET DAN KONDISI OPERASI Rahman, Nanik Astuti; Hudha, Mohammad Istnaeny; Anggorowati, Dwi Ana
jurnal ATMOSPHERE Vol. 4 No. 2 (2023): ATMOSPHERE
Publisher : Teknik Kimia ITN Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/atmosphere.v4i2.8478

Abstract

Rosella, a plant previously known as a flower, is now one of the plants that is often used as an object of research. Apart from simplicia, rosella is produced as a drink that has health benefits. Rosella production includes tea, jelly candy, instant drinks, and syrup. Roselle syrup production is carried out using process engineering, namely temperature and heating time. The addition of sugar was also intended to see its effect on preserving the syrup. The sugar added is varied at 1; 1.25; and 1.5 kg. In the syrup-making process, citric acid is added to enhance the taste. In this research, the heating temperature was carried out at the boiling temperature, with the heating time varying between 10 minutes, 15 minutes, and 20 minutes. Heating is also carried out at a temperature of 85 °C with a heating time of 30, 40, and 50 minutes. Laboratory analysis of the product is vitamin C analysis. To test consumer acceptance of the product, a hedonic test is carried out, which includes tests on taste, color, and structure (viscosity). The results obtained by this research were a syrup product with the largest vitamin C content, namely 25,251 mg/100 g, at a heating variation of 85 °C with a heating time of 50 minutes. Optimal sugar addition at 1.25 kg
Rancang Bangun Aplikasi Pelaporan Koperasi Wanita Bhakti Ibu Kota Malang Laksmana, Dimas Indra; Rahman, Nanik Astuti; Hudha, Muhammad Istnaeny; Minah, Faidliyah Nilna
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 2 No 2 (2018): Agustus
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v2i2.1275

Abstract

Statute Cooperative and Koperasi Wanita Bhakti Ibu is prepare accountability report, as well as submission of work plan and budget plan of expenditure of cooperative expenditure at Rapat Anggota Tahunan (RAT) Forum. Presentation of accountability report in RAT which is a forum for sharing is expected to give member's opportunity to objectively and constructively assess the existence and development of cooperative as a whole, in the field of organization, management, capital, business and other activities. The latest financial reports, therefore need improvement and innovation by creating a computerized reporting application to simplify and mitigate work and minimize errors in reporting figures. Research method used to analyze system on Koperasi and design system to cooperative. System analysis purpose is tobe able identify and evaluate problems that occur and expected needs, so it can be proposed improvement. After build application, resulted conclusions: (1) Based on trial, application run effectively, minimize errors in performing data storage and facilitate data search and transactions more quickly and accurately; (2) Based on trial, application capable reports of transaction or financial administration, according to user current desire.
Penggunaan mesin produksi dan penerapan K3 untuk mengurangi resiko kecelakaan kerja pada UMKM Artiyani, Anis; Budiharso, Hery Setyo; Sari, Sanny Andjar; Anggorowati, Dwi Ana; Setyawati, Harimbi; Rahman, Nanik Astuti; Ashari, Mohammad Ibrahim
Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) Vol. 5 No. 3 (2024)
Publisher : Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/jp2m.v5i3.21876

Abstract

Kegiatan pengabdian kepada masyarakat dalam konteks Usaha Mikro, Kecil, dan Menengah (UMKM) di sektor manufaktur memiliki relevansi yang signifikan dalam mendukung perekonomian lokal. Salah satu contohnya adalah Bengkel Las Karmannaut yang berlokasi di Perumahan Citra Pesona Bumi Raya blok F5 no. 18. Untuk meningkatkan produktivitas dan keselamatan kerja di UMKM ini, Tim Pelaksana Pengabdian dari Institut Teknologi Nasional Malang telah menyelenggarakan kegiatan Workshop dan Pelatihan guna Peningkatan Pengetahuan tentang Penggunaan Mesin Produksi pada UMKM Bengkel Las. Tujuan kegiatan ini adalah untuk memberikan pelatihan kepada UMKM Bengkel Las Karmannaut tentang operasional penggunaan mesin bubut, teknik pemeliharaan mesin, serta kesadaran akan keselamatan kerja bagi para pekerja di Bengkel Las Karmannaut. Pelaksanaan kegiatan ini menggunakan metode Participatory Action Research (PAR) dan Foccus Grup Discussion (FGD) guna penyelesaian masalah yang dihadapi mitra pengabdian terutama tentang penggunaan dan pemeliharaan mesin bubut, serta penerapan K3 bagi UMKM Bengkel Las.Pelatihan mesin bubut menjadi penting sebagai investasi jangka panjang bagi pelaku usaha bengkel untuk meningkatkan keterampilan tenaga kerja, meningkatkan efisiensi operasional, dan tetap bersaing dalam industri manufaktur yang dinamis.Melalui pelatihan ini, diharapkan UMKM dapat mengoptimalkan proses produksi mereka secara efisien dan aman, sehingga berkontribusi positif terhadap pertumbuhan ekonomi lokal serta kesejahteraan masyarakat sekitar Kelurahan Kedungkandang.
Pengolahan Limbah Sayuran Menjadi Pupuk Organik Cair dengan Metode Desain Partisipatori di Desa Sumberejo Batu Rahman, Nanik Astuti; Hudha, Mohammad Istnaeny; Dewi, Rini Kartika; Anggorowati, Dwi Ana; Minah, Faidliyah Nilna
Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri 2021: Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (587.298 KB)

Abstract

Limbah pertanian di Desa Sumberejo Batu, berupa sisa sayuran dari golongan kubis, daun kol, selederi, andewi dan sawi mencapai kuantitas hingga 5 ton per hari. Perilaku masyarakat yang belum sadar akan bahaya bencana yang diakibatkan memberikan dampak yang cukup luas mengingat daerah Batu merupakan daerah Hulu yang sangat mempengaruhi 24 daerah pertanian di bawahnya. Limbah sayuran tersebut dihasilkan dari tiga masalah besar limbah yaitu 1) tercampurnya sisa sayuran dengan zat kimia akibat pemakaian pupuk kimia yang menyebabkan kerusakan tanah dan bau tidaka sedap; 2) usia produk (basah) yang pendek dan terjadi over stock saat panen raya; dan 3) sulitnya melakukan mitigas pencemaran dan tidak ada parameter target capaian pengolahan limbah. Berdasarkan hasil analisa lapangan maka pada penelitian ini di fokuskan pada pengolahan limbah sayuran menjadi pupuk organik cair. Pemilihan metode penangan masalah limbah pertanian yang ada Desa Sumberejo ini dirancang dengan desain partisipatory, artinya pengolahan limbah dilakukan bersama-sama dengan masyarakat sehingga ada keterlibatan dan tanggungjawab dari masyarakat untuk mengendalikan pencemaran lingkungan akibat limbah pertanian yang selama ini belum ditangani secara komprehensif. Pupuk cair organik yang dihasilkan mempunyai karakteristik yang sesuai dengan SNI Pupuk cair. Unsur hara yang dibutuhkan tercukupi baik secara makro maupun mikro nutrien. Unsur NPK total pupuk cair yang dihasilkan adalah 2 – 3,7%, menggunakan kondisi proses fermentasi anaerob selama 21 hari.
Tailoring the Adsorptive Efficiency and Pore Characteristics of Silica through Solvothermal Treatment Assisted by Cetyltrimethylammonium Bromide (CTAB) Timu, Fransiska Altrima Key; Rahman, Nanik Astuti
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 6 No. 2 (2025): IJEISE
Publisher : UPN Veteran Jatim

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Abstract

Silica is a porous material widely utilized across various fields. One of the potential sources of silica is sandblasting waste, which contains more than 90% silica. This study aims to investigate the influence of Cetyl Trimethyl Ammonium Bromide (CTAB) concentration and solvothermal duration on producing silica with enhanced adsorption capacity and porosity. The independent variables in this research include CTAB surfactant concentrations of 0.1, 0.2, 0.3, 0.4, and 0.5%, as well as solvothermal processing times of 8, 10, 12, 14, and 16 hours. The optimal result was obtained with the addition of 0.5% CTAB and a solvothermal duration of 16 hours, in which SEM-EDX analysis revealed large visible pores formed by aggregates of fine particles arranged in a homogeneous structure. The adsorption capacity, using a methylene blue concentration of 30 mg, was found to be 27.1822 mg/g. Based on the study on the Enhancement of Adsorption Capacity and Porosity of Silica Using Cetyl Trimethyl Ammonium Bromide (CTAB) via the Solvothermal Method, it can be concluded that both adsorption capacity and porosity are influenced by the addition of CTAB, solvothermal duration, and the concentration of methylene blue used in the adsorption capacity test.
MODIFIKASI LIMBAH PASIR SILIKA PT. DPL DENGAN GUGUS AMINE MENGGUNAKAN METODE IN SITU SEBAGAI MATERIAL ADSORBEN CO2 HIMAYA, MEISUN; Anggorowati, Dwi Ana; Rahman, Nanik Astuti
jurnal ATMOSPHERE Vol. 6 No. 2 (2025): ATMOSPHERE
Publisher : Teknik Kimia ITN Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/atmosphere.v6i2.13485

Abstract

Silica sand has physical and chemical characteristics that make it a potential candidate as an adsorbent material. This research utilises silica sand waste from PT DPL sandblasting using the in-situ method with amine group modification to determine its CO2 adsorbent potential along with the effect of amine group ratio: solvent and acid concentration on CO2 absorption. Silica sand waste was extracted using NaOH to obtain Sodium Silicate then modified with amine groups in this case -aminopropyl-triethoxysilane (APTS) by in-situ method and characterised by FTIR and SEM. Based on the results of FTIR analysis, the more amine groups in the APTS: ethanol ratio, the higher the possibility of interaction between amine groups and CO2. So that the modification of silica sand waste is potential as a CO2 adsorbent. The ratio of APTS: ethanol solvent with the most optimal results at a ratio of 1: 1. Based on the results of SEM analysis, the higher the concentration of HCl addition, the more optimal the modified silanol groups with amine groups. In this case the addition of HCl is most optimal at a concentration of 3N.
PEMANFAATAN KULIT BUAH SEEBAGAI PUPUK CAIR DENGAN VARIASI SUMBER GULA DAN KONSENTRASI EM4 Septiansah, Yoga Ferdy; Kurniawan, Wahyu; Sudiro; Rahman, Nanik Astuti
jurnal ATMOSPHERE Vol. 6 No. 2 (2025): ATMOSPHERE
Publisher : Teknik Kimia ITN Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/atmosphere.v6i2.16958

Abstract

Liquid organic fertilizer is one type of fertilizer that is widely circulated in the community which is produced from the fermentation of leaf waste or animal waste. This study aims to utilize fruit waste as a production material for making Liquid Organic Fertilizer (POC), in addition to determining the effectiveness of variations in sugar sources and EM4 concentrations on the quality of the POC produced. The production process of liquid organic fertilizer in this study used types of sugar with variations of granulated sugar, brown sugar, mixed sugar (granulated sugar + brown sugar) and without sugar and EM4 bioactivator concentrations of 10%, 20%, 30%, 40% and 50%. The results obtained from the nitrogen analysis ranged from 0.1-0.3 which when associated with the SNI POC did not meet the standard. Liquid organic fertilizer was obtained from testing the phosphorus content in 30% brown sugar, which was 0.00931. While the best potassium content analysis results were found in the EM4 10% granulated sugar variation sample with a result of 0.30%.
Silica Extraction Based on Quartz Sand Waste Sandblasting PT. Dok Lamongan with Base Method Theofilia Medya Ratri; Asya Wisma Prastiwi; Mohammad Istnaeny Hudha; Nanik Astuti Rahman
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 2 (2024): EDISI SEPTEMBER 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i2.6034

Abstract

Sandblasting is a method used to improve the surface structure of the material by using high pressure. Quartz sand is one of the abrasives used for sandblasting—quartz sand PT. Lamongan DOK contains silica (SiO2) of 83.4%. The method used in this study is the base method. The solvent used is KOH and NaOH with temperature variation of material preparation 600, 900, 1200 oC and variation of extraction time 1, 1½, 2 hours. The results showed that the most optimal variable with NaOH solvent was at the preparation temperature of 900 oC with 2 hours of extraction, and the amount of the extract yield was 28.5%. The following variable is at the preparation temperature of 600 oC with 1.5 hours of extraction, and the amount of the extract yield is 28.3%. Besides that, the optimal variable with KOH solvent is at the preparation temperature of 900 oC with 1.5 hours of extraction, and the amount of the extract Yield is 27.9%. XRD analysis showed that the extract obtained SiO2 in the form of Crystal Cristobalite and Quartz, and the FTIR analysis results detected the presence of O – H alcohol functional groups. It can provide information that sandblasting waste has a reasonably high Silica content, which can be utilized as a product with higher economic value.
Analysis Capabilities of Green Open Space and Quality Ambient Air Using Exhaust Gas Parameters on Motor Vehicles (CO2) (Case Study in Kendari City) Satya Darmayani; Supiati Supiati; Lilin Rosyanti; Nanik Astuti Rahman; Wetri Febrina
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 2 (2024): EDISI SEPTEMBER 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i2.5762

Abstract

The rapid increase in population and land transportation in Kendari City has impacted the availability of green open spaces (GOS), which are crucial for maintaining air quality by absorbing carbon dioxide (CO2) emissions from motor vehicles. This study aims to assess the capacity of GOS in Kendari to absorb CO2 based on different vegetation types. The research employed a descriptive analysis method, with data collected through field observations and secondary sources, including information on GOS area, motor vehicle fuel consumption, and emission factors. The study found that Kendari City requires 17.73 hectares of GOS to absorb the CO2 emissions produced by motor vehicles, while the existing GOS covers 2,562.67 hectares. These indicate that the current GOS is sufficient to perform its environmental functions. Forests in the area absorb 10.292 tons of CO2, parks absorb 1.767 tons, green lanes absorb 27.682 tons, and other GOS areas, including the Kendari Botanical Gardens and sports fields, contribute more diminutive amounts. The results suggest that while Kendari's existing GOS can still manage CO2 emissions effectively, further expansion and optimization of green areas could enhance the City's environmental sustainability. This research provides valuable insights for urban planners and policymakers in Kendari, especially in planning for future GOS development to ensure continued air quality management.
BIOASSAY-GUIDED IN VITRO ANTIBACTERIAL ACTIVITY OF FRACTION FROM Abelmoschus esculentus L. FRUIT Christina Astutiningsih; Meri Meri; Nanik Astuti Rahman
Berita Biologi Vol 25 No 2 (2026): Berita Biologi
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/berita_biologi.2026.13101

Abstract

Aims: Research focuses separating antibacterial compounds from Abelmoschus esculentus (A. esculentus) against several  pathogenic bacteria including Staphylococcus aureus, Bacillus subtilis, Escherichia coli, and Pseudomonas aeruginosae using a bioassay-guided method. Methodology and results: A. esculentus fruit was extracted and its active compounds were separated and tested against several variants of gram negative bacteria and gram positive bacteria. The testing began with extracts, followed by fractions, and  subfractions. Extracts, fractions and subfractions of A. esculentus fruit were obtained all exhibiting antibacterial activity. The ethyl acetate fraction was the most active, yielding the largest inhibition zone diameter for both bacteria. The dominant compound in this fraction was quercetin accounting for 26% of the total. The ethyl acetate fraction was then separated into subfractions then tested for antibacterial and the composition of the compound was identified. One of the subfractions that gave the diameter of the inhibition zone after being separated identification using LC-MS revealed that the dominant compound in the subfraction was flavonoid identified as (3-hydroxy-2,3-dihydroimidazo [1,5-a] pyridin-8(5H)-one-5-β-glucopyranoside 42.46%, followed by quercetin 13.23%, Fraxidin 6.34%, scopoletin 1.51% and phenolic compounds such as  homovanillic acid 1.67% and 3-(4-hydroxy-3-methoxyphenyl)-n-[2-(4-hydroxyphenyl)ethyl]prop-2-enimidic acid 4.77%. Conclusions, significance and impact to study: A. esculentus Fruit has demonstrated significant antibacterial potential, with bioactive compound including flavonoid and phenolic derivate producing a greater inhibitory zone compared to positive control, Ciprofloxacin.
Co-Authors -, Solekah -, Solekah Ady Dwi Tegar, Ahmad Nurul Hakim An Nasif Aladin Eko Purkuncoro Anis Artiyani Anita Ashari, Mohammad Ibrahim Asya Wisma Prastiwi Atiqotuzzummah Atiqotuzzummah, Atiqotuzzummah Budiharso, Hery Setyo Christina Astutiningsih Christina Astutiningsih Dimas Indra Laksmana Dinnastyar, Faishal Ahmad Dwi Ana Anggorowati Eky Novianarenti Elvianto Dwi Daryono Endah Kusuma Rastini Erlinda Ningsih, Erlinda Faidliyah Nilna Minah Febrina, Wetri Harimbi Setyawati HIMAYA, MEISUN Iryanti Fatyasari Nata, Iryanti Fatyasari Iswono, Veronica Putri Jimmy Khoiriyah, Aldina Fitri Lalu Mustiadi Lilin Rosyanti Maranatha Wijayaningtyas Marsen, Vinsen Alexander Masrurotul Ajiza Meri Meri Meri, Meri Mohammad Istnaeny Hudha Muhammad Rio Hendratama Oktavian, Dio Ajeng Retnowati, Dewi Rini Kartika Dewi Rizky Meidiana Faradila Sanny Andjar Sari Satya Darmayani Septiansah, Yoga Ferdy Siswi Astuti Sudiro Sugiarto, Ady Dwi Tegar Supiati Supiati Theofilia Medya Ratri Tias Eka Rahmawati Timu, Fransiska Altrima Key Wahyu Kurniawan