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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan METANA Jurnal Teknik Mesin (JTM) Journal of Research and Technology Jurnal Chemurgy Indonesian Journal of Chemical Analysis (IJCA) Jurnal Konversi Energi dan Manufaktur Jurnal Pengendalian Pencemaran Lingkungan (JPPL) International Journal of Eco-Innovation in Science and Engineering (IJEISE) Jurnal Teknik Terapan (J-TETA) Journal of Science and Social Development Jurnal Cakrawala Maritim Journal Serambi Engineering (JSE) Jurnal Teknologi Maritim Jurnal Cakrawala Maritim Mein: Journal of Mechanical, Electrical & Industrial Technology PROCEEDINGS CONFERENCE ON DESIGN AND MANUFACTURE AND ITS APPLICATION
Ulvi Pri Astuti
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Aerospace Engineering 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 Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Synthesis of a Cellulose/PVA Adsorbent Composite from Pineapple Leaves Waste (Ananas Comosus) for the Degradation of Methylene Blue in Aqueous Solution Mayangsari, Novi Eka; Ramadani, Tarikh Azis; Astuti, Ulvi Pri
Indonesian Journal of Chemical Analysis (IJCA) Vol. 8 No. 1 (2025): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol8.iss1.art6

Abstract

Methylene blue is disastrous for the environment due to their high toxicity. This needs to be mitigated to ensure that the effects can be reduced. Pineapple peel waste (Ananas comosus) can be valorized as cellulose adsorbent and cellulose/PVA adsorbent is a potential solution to minimize the impact of these contaminants. The objective of this research is to investigate the performance of the cellulose/PVA composite in the methylene blue adsorption process and to evaluate its performance with a cellulose adsorbent. The adsorption process results showed that the percentage of MB removal reached 94.03% on the cellulose/PVA adsorbent with 9% NaOH delignification for 90 minutes. After adding PVA, there was a significant increase in the removal of methylene blue in the adsorbent was recorded. The results indicate that cellulose and cellulose/PVA composites are more effective adsorbents than cellulose alone for removing methylene blue.
Rancang Bangun Mesin Coolant Based Water Treatment untuk CNC Arief Nugroho; Fipka Bisono; Ulvi Pri Astuti
Proceedings Conference On Design Manufacture Engineering And Its Application Vol 1 No 1 (2017): Conference on Design and Manufacture and Its Aplication
Publisher : Proceedings Conference On Design Manufacture Engineering And Its Application

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Abstract

Dalam penggunaan mesin CNC coolant diperlukan untuk mengurangi keausan pada pahat, water coolant adalah salah satu pendingin pada proses pemahatan yang masih di gunakan sampai sekarang, akan tetapi sebuah water coolant memiliki masa kadaluarsa yang setiap jangka waktu tertentu harus di ganti yang baru,dengan begitu otomatis coolant yang bekas akan di buang dan menjadi limbah cair berbahaya. Metode yang di gunakan untuk mengatasi coolant bekas yang menjadi limbah adalah dengan menggunakan cara penyaringan awal dengan menggunakan kain kasa untuk mengikat minyak dan gram – gram logam yang larut pada cairan, dan selanjutnya akan di endapkan pada bak sedimentasi, kemudian akan di saring kembali menggunakan media pasir, krikil untuk memisahkan gumpalan cair dari bahan kimia juga menggunakan arang dan batu zeolit sebagai adsorban,yaitu penyerapan menjadi lebih layak digunakan.Hasil dari penelitian ini adalah tercapainya target dari parameter yang telah di tentukan, dengan berpedoman pada batas maksimum dari air limbah,dan hasil akhir dari pengolahan yang di lakukan pada beberapa parameter berikut adalah (34oC) untuk suhu dari batas maksimumnya (38 oC), untuk (pH 8,0 Mg/l ) dari batas maksimum (6,5 Mg/l) sampai (9,0 Mg/l) hasil TDS (1750 Mg/l) di bawah batas maksimum yaitu (2000 Mg/l), pada TSS di dapatkan hasil (180 Mg/l) di bawah batas maksimum (200 Mg/l), untuk parameter besi hasilnya (3,88 Mg/l) dari batas maksimum (5,0 Mg/l) mangan (1,17 Mg/l) dari batas maksimum (2,0 Mg/l) dan yang terakhir adalah hasil dari seng (1,25 Mg/l) dari batas maksimumnya (5 Mg/l).
Biokoagulan berbasis Kulit Pisang Kepok untuk Mereduksi TSS dan COD Ramadani, Tarikh Azis; Setiawan, Shinta Dewingga; Astuti, Ulvi Pri; Mayangsari, Novi Eka
METANA Vol 21, No 1 (2025): Juni 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/metana.v21i1.67447

Abstract

Pisang kepok merupakan salah satu makanan yang populer di Indonesia. Pisang kepok memiliki kecenderungan untuk menghasilkan limbah padat yang berdampak negatif terhadap lingkungan. Pemanfaatkan kulit pisang kepok sangat penting untuk mengurangi dampak negatifnya dan memberikan nilai tambah untuk memastikan kehidupan yang berkelanjutan dan ekonomi sirkular. Salah satu cara pemanfaatannya adalah dengan mengembangkan koagulan pektin alami dari kulit pisang kepok. Koagulan alami memiliki keunggulan seperti dapat terurai secara hayati, tidak beracun, tidak korosif, menghasilkan lebih sedikit lumpur namun memiliki nilai gizi yang tinggi dan biaya pengolahan lumpur yang minimal jika dibandingkan dengan koagulan kimia. Pektin digunakan sebagai koagulan alami untuk mengontrol total padatan tersuspensi dan chemical oxygen demand dalam industri laundry skala kecil. Pektin diekstraksi menggunakan asam klorida dan dikarakterisasi. Karakterisasi pektin menggunakan Fourier-Transform Infrared Spectroscopy, kandungan pektin, berat ekuivalen, kandungan metoksi, kandungan asam galakturonat, kandungan air, dan derajat esterifikasi. Proses koagulasi dan flokulasi dilakukan dengan memvariasikan dosis koagulan-flokulan dan waktu pengendapan. Kulit pisang kepok telah berhasil dimanfaatkan untuk mendapatkan pektin sebagai koagulan alami. Pektin terbukti efektif dalam menurunkan chemical oxygen demand dan total suspended solid dalam air limbah industri laundry skala kecil. Meningkatkan dosis pektin dan waktu pengendapan meningkatkan efisiensi penyisihan parameter polutan.  Kepok banana is one of the popular foods in Indonesia. It has tendency to create solid waste that has a negative impact on the environment. It is crucial to utilize kepok banana peel to mitigate its negative impact and add value to a circular economy. One way of utilization is by developing a natural pectin coagulant from kepok banana peel. Natural coagulants have advantages such as being biodegradable, non-toxic, non-corrosive, producing less sludge but high nutritional value and minimal sludge treatment costs when compared to chemical coagulants. Pectin is used as a natural coagulant to control total suspended solids and chemical oxygen demand in the small-scale laundry industry. Pectin was extracted using hydrochloric acid. Characterization of pectin using Fourier-Transform Infrared Spectroscopy, pectin content, equivalent weight, methoxy content, galacturonic acid content, water content, and degree of esterification. The coagulation and flocculation process were performed by varying the coagulant-flocculant dosage and settling time. Banana kepok peel has been successfully utilized to achieve pectin as a natural coagulant. Pectin proved to be effective in lowering chemical oxygen demand and total suspended solid pollutant characteristics in small-scale laundry industry wastewater. Increasing pectin dosage and settling time enhanced the removal efficiency of pollutant parameters.
Pengolahan Limbah Industri Kerupuk Ketumbar Menggunakan Biofilter Aerobik Dewi, Tanti Utami; Ulvi Pri Astuti; Ahmad Erlan Afiuddin; Mirna Apriani; Danang Hadi; Ferisa Jenisa
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The coriander cracker industries in Nganjuk City, commonly structured in Small Business scales are  still implying conventional equipment in its production. High daily production volumes are resulting the large amounts of liquid waste containing pollutants exceeding Indonesia’s Threshold Value specifically in Chemical Oxygen Demand (COD) at 131.2 mg/L and Total Suspended Solids (TSS) at 203 mg/L. This condition causes serious environmental risks toward improper treatment. The biofilter system is one of wastewater treatment method with a simple and applicable way, applying a biological treatment approach utilizing microorganisms to reduce organic contaminants. This study aims to analyze the influence of media type on the removal efficiency of COD and TSS concentrations in coriander cracker industries’ wastewater using an aerobic biofilter system with the bioball and Kaldness K1 media. Performance testing of the aerobic biofilter demonstrated that the reactor with Kaldness K1 media achieved the highest removal efficiencies, eliminating 85.96% of COD and 95.01% of TSS by day 12. The study confirms that the Kaldnes K1 media's porous surface structure and high specific surface area enhance biofilm growth of microorganisms, thereby optimizing organic matter degradation processes.
Moringa Olifera-Based Magnetic Biocoagulant Application to Mitigate Red Congo Parameters Ramadani, Tarikh Azis; Fatmawati, Meilinda Eka; Mayangsari, Novi Eka; Astuti, Ulvi Pri
MEIN : Journal of Mechanical, Electrical & Industrial Technology Vol. 2 No. 2 (2025): MEIN : Journal of Mechanical, Electrical & Industrial Technology
Publisher : P3M Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/mein.v2i2.49

Abstract

The population growth rate has been demonstrated to have a direct impact on the increase in pollutant concentrations released into water bodies. One of the pollutants that has been identified in water bodies is congo red. This necessitates the implementation of effective management strategies to mitigate the adverse effects of pollutants. A methodology that has been demonstrated to be effective in mitigating the impact of congo red is the coagulation-flocculation process. The objective of this study is to employ biocoagulants and magnetic biocoagulants derived from moringa oleifera as mass separation agents to mitigate the adverse effects of congo red. The effectiveness of the mass separation agents was evaluated with varying initial concentrations of congo red. The augmentation of the initial congo red concentration yielded consistent results for both biocoagulants and magnetic biocoagulants. The highest results were obtained at an initial congo red concentration of 100 ppm, with a value of 97.34% for the magnetic coagulant. The coagulation-flocculation process can occur through several mechanisms, including charge neutralization, floc formation, and sedimentation.
Reduksi Zat Pewarna Kongo Merah via Koagulasi-Flokulasi dengan Kitosan dari Cangkang Kepiting Bakau (Scylla serrata) Ramadani, Tarikh Azis; Fajrin, Roihana; Mayangsari, Novi Eka; Astuti, Ulvi Pri
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 6 No. 2 (2024): JPPL, September 2024
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M), Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v6i2.2410

Abstract

The mangrove crab (Scylla serrata) represents a notable component of the Indonesian marine biota. The utilization of mangrove crabs as a food source results in the deposition of shell waste. The shells of these crustaceans contain chitin, which can be synthesised into chitosan. One of the advantages of chitosan is that it can be utilized as a coagulant to reduce congo red dye. This study aimed to evaluate the potential of mangrove crab shell-based chitosan and its performance in the coagulation and flocculation process using the jar test method. The chitosan derived from mud crab shells exhibited a degree of deacetylation (DD) value of 74%. The operating parameters for the coagulation and flocculation process were a coagulant dosage of 25-150 mg/L and a congo red concentration of 100-250 mg/L. The results of the study demonstrate that an increase in coagulant dose results in enhanced treatment performance, reaching a point of saturation where performance declines or stabilizes. Similarly, elevated initial Congo red concentrations also influence the effectiveness of higher coagulation. The removal of congo red dye with the effect of coagulant dose and initial concentration of congo red resulted in a percent removal of up to 99.9% at a coagulant concentration of 150 mg/L and a congo red concentration of 250 mg/L
Pengaruh Komposisi Campuran dan Ukuran Butiran terhadap Kualitas Briket Arang dari Limbah Serbuk Kayu Mahoni (Swietenia macrophylla) dengan Perekat Daun Jarak Pagar (Jatropha curcas) Prasetyo, Dafit Ari; Violita, Elvira Anne; Sholikah, Umi; Astuti, Ulvi Pri
Jurnal Teknik Terapan Vol. 4 No. 2 (2025): Oktober
Publisher : P3M Politeknik Negeri Jember

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Abstract

Mahogany sawdust waste (Swietenia macrophylla) has not been widely utilized and is only used as baglog in oyster mushroom cultivation and particle board mixture. The potential of mahogany sawdust waste as fuel is quite high, especially when viewed from its calorific value which reaches 4,652.34-4,844.83 cal/g. Making mahogany sawdust into charcoal briquettes with a mixture of castor oil plant leaves (Jatropha curcas) can increase the calorific value and its usefulness as fuel. The variations of the castor oil leaf adhesive mixture used are 10%, 20%, and 30% as well as variations in the size of mahogany sawdust charcoal grains 35 mesh, 60 mesh, and 100 mesh. The briquette with the best composition produced is variation A1B1, namely a briquette with a 10% adhesive mixture and a particle size of 35 mesh (particle size ≃ 0.5 mm) with a calorific value of 6,122 cal/g, water content of 5.62%, ash content of 6.46% and has met the quality standards for charcoal briquettes according to SNI 1-6235-2000
Degradation Of Congo Red Based On Natural Coagulant (Moringa Oleifera) Ramadani, Tarikh Azis; Ramadhani, Dhiya’ Arnada; Fatmawati, Meilinda Eka; Mayangsari, Novi Eka; Astuti, Ulvi Pri
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

The release of dyes into the environment can have deleterious effects. therefore, their handling must be done in a conscientious manner. One method that can be employed is coagulation-flocculation. The employment of natural coagulants has been demonstrated to mitigate the deleterious effects of polluting compounds on the ecosystem. Moringa oleifera, a plant native to tropical regions, including Indonesia, is a natural source of coagulants. Moringa oleifera plants are extracted using sodium chloride to isolate protein active ingredients. The utilization of a natural coagulant derived from moringa oleifera was implemented with the objective of ameliorating the deleterious effects of congo red. The effectiveness of the natural coagulant was evaluated based on the effect of initial concentration and coagulant dosage. The initial concentration and dose of coagulant exhibited a direct correlation with the efficiency of reducing congo red. An increase in the initial concentration resulted in a concomitant decrease in efficiency, while an increase in the coagulant dose demonstrated a corresponding increase in efficiency. The highest removal efficiency value was obtained when the coagulant dose was 100 ppm and the initial concentration was also 100 ppm. The consequence of this condition was a 99.46% reduction in efficiency of the congo red.
Pengelolaan Sampah Di Lingkungan Rumah Tangga Demi Terwujudnya Kesehatan Keluarga Amelia Novitrie, Nora; Maisarah Disrinama, Am; Pri Astuti, Ulvi; Puspita Sari, Devina; Erawati, Ika; Novrita Devi, Yesica; Rohma Dhani, Mey; Nia, Renanda; Nadia Rachmat, Aulia
Journal of Science and Social Development Vol. 8 No. 2 (2025): Journal of Science and Social Development
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jssd.v8i2.2108

Abstract

The composition of waste generated from human activities is 60-70% organic waste, and the remainder is non-organic waste (30-40%). Of this non-organic waste, plastic waste makes up the second largest portion, at 14%. The large percentage of household waste represents both a problem and an opportunity to address the waste problem at its source. This can be achieved by involving and educating housewives who come into direct contact with household waste. Housewives should be educated on the importance of managing waste from its source, using the 3R principle (Reduce, Reuse, Recycle), classifying the types of plastic waste, and handling them appropriately. Educated housewives are expected to become ambassadors who will spread their understanding of the importance of changing the public's mindset regarding plastic waste management.
Co-Authors Adhi Setiawan Ahmad Erlan Afiuddin Ahmad Erlan Afiuddin Alma Vita Sophia Am Maisarah Am Maisarah Disrinama Amelia Novitrie, Nora Arief Nugroho Aviantari, Maura Diza Ayu Nindyapuspa Bagas Adhiwangsa Bambang Antoko Bella Naziel Iqmalia Bhagaskara Cipta Linuwih Danang Hadi Denny Dermawan Denny Dermawan Dwi Pradevi Yuniarta Erlan Afiuddin, Ahmad Fadilla, Laras Nur Fajrin, Roihana Fani Firmansyah Fatmawati, Meilinda Eka Ferisa Jenisa Fipka Bisono Gigih Alam Pambudi Gusma Hamdana Putra Hayati, Debby Zintya Ika Erawati Imam Hambali Azhori Jannah, Nabillah Rodhifatul Luqman Cahyono Lutfi Wicaksono Mikail Rahmadnegara Mirna Apriani Moch Luqman Ashari Mochammad Choirul Rizal Muhammad Abdulloh Azam Nadia Rachmat, Aulia Nia, Renanda Nindyapuspa, Ayu Nora Amelia Novitrie Novi Eka Mayangsari Novrita Devi, Yesica Nyoto Sulistiyo Prasetyo, Dafit Ari Puspita Sari, Devina Putri, Anindya Taffana Rachma Dinihaque Pristantia Putri Rafi Narariya Ramadhan Rahayu Mekar Bisono, Rahayu Mekar Ramadhani, Dhiya’ Arnada Rohma Dhani, Mey Setiani, Vivin Setiawan, Shinta Dewingga Setyawati, Emeralda Eka Putri Sholikah, Umi Tanti Utami Dewi Tanti Utami Dewi Tarikh Azis Ramadani Utami Dewi, Tanti Violita, Elvira Anne Vivin Setiani Vivin Setiani