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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan METANA Journal of Research and Technology International Journal of Eco-Innovation in Science and Engineering (IJEISE) KOLONI
Novitrie, Nora Amelia
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences Other

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PENGARUH JENIS BAHAN ATAP PADA PROSES DESALINASI EVAPORASI AIR LAUT Novitrie, Nora Amelia; Afiuddin, Ahmad Erlan; Hardiansyah, Rizal
Journal of Research and Technology Vol. 3 No. 2 (2017): JRT Volume 3 No 2 Des 2017
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v3i2.275

Abstract

Treatment technology of sea water into freshwater is known as desalination. An effective and economical desalination technique is desalination with evaporation. Thisstudy aims to determine the effect of roofing materials on the amount of freshwater produced. The study was conducted using a miniature evaporative tub that had a rooflike shape. Evaporative tubs dimension was 1m x 1m x 0.02m of laminated wood material. 20 liters of brackish water was pumped into the tub. Water in the tub was then closed using a roof designed like a roof made of fiberglass and polycarbonate. Brackish water was left in contact with the sunlight for 24 hours. As a result of heat transfer from sunlight to evaporation tub, brackish water experienced evaporation. The steam moved upward and was captured by the roof wall then condensated resulting in fresh water. The conclusion obtained was a miniature roof of evaporative desalination using fiberglass material obtained 427 ml of fresh water while using polycarbonate material obtained 136 ml fresh water. Keywords: Roof, Desalination, Evaporation.
Studi Pengaruh Variasi Resin terhadap Laju Korosi pada Material FRP Novitrie, Nora Amelia; Alvido Toto Wijaya; Bambang Antoko
Journal of Research and Technology Vol. 6 No. 2 (2020): JRT Volume 6 No 2 Des 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v6i2.343

Abstract

Pipes in the oil and gas industry use carbon steel which contains a corrosive fluid with fluctuating acidity. This condition causes the corrosion resistance of the pipe to decrease so that other materials that are more resistant to corrosive conditions are needed, for example Fiberglass Reinforced Plastic (FRP). FRP is a composite material made of resin which is then formed into pipes. In this study, trials were carried out on polyester resin, silicon rubber resin and epoxy resin to determine the value of their corrosion rate. The level of resistance of a material to corrosion generally has a corrosion rate value between 0.025 - 5.08 mmpy. The method used is the immersion test of the specimen using the ASTM G31 - 72 standard.The results obtained from this experiment are that polyester has the lowest corrosion rate than epoxy and silicon rubber and polyester resin with a fiber composition of 40% and fiber position 40° has a corrosion rate of 0.566 mmpy so that it meets the level of resistance of a material to corrosion.  
Efektivitas Biosorpsi Logam Berat Ni(II) Menggunakan Saccharomyces cerevisiae Terimobilisasi Pada Natrium Alginat Setiawan, Adhi; Rahmawati, Devi Ayu; Novitrie, Nora Amelia; Dermawan, Denny
METANA Vol 20, No 2 (2024): Desember 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/metana.v20i2.59250

Abstract

Kandungan logam berat Nikel(II) yang dihasilkan dari aktifitas industri berpotensi menyebabkan pencemaran sumber daya air yang berbahaya bagi makluk hidup dan lingkungan. Penggunaan biomassa Saccharomyces cerevisiae terimobilisasi natrium alginat sebagai adsorben merupakan alternatif pengolahan yang murah dan efektif dalam menurunkan kandungan logam berat NI(II) di dalam air limbah. Imobilisasi dilakukan untuk meningkatkan stabilitas partikel biomassa dan meningkatkan kinerja proses penyerapan logam berat. Penelitian ini bertujuan untuk menganalisis karakteristik biosorben serta pengaruh pH, waktu kontak dan konsentrasi awal terhadap efisiensi penyisihan logam Ni(II). Proses adsorpsi dilakukan dengan sistem batch menggunakan variasi pH (3, 5, 6), waktu kontak (15, 30, 45, 60, 75, 90 menit), dan konsentrasi awal Ni(II) (25, 50, 75, 100 mg/L). Biosorben dikarakterisasi menggunakan FTIR dan SEM-EDX. Hasil penelitian menunjukkan hasil efisiensi penyisihan Ni(II) optimum diperoleh pada kondisi pH larutan 6, waktu kontak 75 menit, dan konsentrasi awal Ni(II) 100 mg/L yaitu sebesar 82,77%.  The heavy metal content Ni(II) produced from industrial activities has the potential to cause water resources to be polluted, which is dangerous for living creatures and the environment. Saccharomyces cerevisiae biomass immobilized with sodium alginate as an adsorbent is a cheap and effective treatment alternative in reducing wastewater's heavy metal NI(II) content. Immobilization is carried out to increase the stability of biomass particles and improve the performance of the heavy metal absorption process. This study aims to analyze the characteristics of biosorbents as well as the effect of pH, contact time, and initial concentration on the removal efficiency of Ni(II) metal. The adsorption process was carried out with a batch system using variations of pH (3, 5, 6), contact time (15, 30, 45, 60, 75, 90 minutes), and initial concentration of Ni(II) (25, 50, 75, 100 mg/L). The biosorbent was characterized using FTIR and SEM-EDX. The results showed that the optimum removal efficiency of Ni(II) was obtained in the condition of solution pH 6, contact time 75 minutes, and initial concentration of Ni(II) 100 mg/L, which amounted to 82.77%.
RYNOLGEL BATTERY BIOETANOL GEL DARI LIMBAH SEKAM PADI DAN ECENG GONDOK SEBAGAI ENERGI TERBARUKAN Dwikurniawan, Yoga; Evada, Bernika Irnandianis; Rahma, Aghissiva Antasya; Novitrie, Nora Amelia; Radianto, Denny Oktavina
KOLONI Vol. 2 No. 1 (2023): MARET 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v2i1.432

Abstract

Industrial growth and population growth have an impact on increasing energy needs. According to the Central Statistical Agency of the Republic of Indonesia in 2020, the population in Indonesia has reached a figure of 273.5 million people, and according to the International Energy Agency (IEA), by 2030, the world's energy demand will have increased by 45%. Approximately 80% of the world’s energy needs come from fossil fuels. In addition, the use of organic waste is the biggest unresolved challenge. Rice husk, which is high in cellulose, is one such organic waste. Many industries in Indonesia also cause water pollution, which causes algae in the waters to increase. For example, a water hyacinth that is left to grow can damage the aquatic ecosystem. This plant produces high levels of carbon and cellulose. Therefore, innovation is needed, such as the utilization in organic batteries and bioethanol gel as renewable energy source. The aim of this research is to utilize waste as a renewable energy source and to know the suitability of the product. This research method is experimental with the acquisition of data from the study of libraries. The types of data obtained are qualitative and quantitative variables. The battery manufacturing process consists of drying, combustion, and packaging. The process of making bioethanol gel includes the stages of pre-treatment, hydrolysis, and fermentation. The results obtained from this study are batteries and bioethanol gel from rice husk and water hyacinth. Keywords: Battery, Bioetanol Gel, Water Hyacinth,Rice Husk
Synthesis of Magnetic Composites of Chitosan-Fly Ash-Fe3O4 Nanoparticle to Improve Congo Red Dye Adsorption Mayangsari, Novi Eka; Dira Pratiwi, Dewi One; Ashifa, Naura Aqillafasha; Ramadani, Tarikh Azis; Novitrie, Nora Amelia; Nindyapuspa, Ayu; Cahyono, Luqman
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 6 No. 1 (2025): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v6i1.143

Abstract

Chitosan, an environmentally friendly adsorbent, is derived from the deacetylation of crab shell chitin. In this study, the chemical and physical properties of chitosan were enhanced through the direct compositing process of magnetic chitosan (Chi) with fly ash powder particles (FA). This research is of considerable importance in the development of environmentally friendly adsorbent materials for the treatment of wastewater contaminated with synthetic dyes, particularly azo dyes such as congo red. The utilization of crab shell waste as a source of chitosan, in conjunction with fly ash and Fe₃O₄ to form Chi-FA-Fe₃O₄ magnetic composites, has been demonstrated to exhibit considerable promise in enhancing adsorption efficiency. The magnetic composite of Chi-FA-Fe₃O₄ was characterized by XRD and SEM. The present study investigated the effect of adsorption process parameters on CR dye removal. The parameters that were investigated included contact time (30-150 minutes) and initial concentration of CR dye at an adsorbent dosage of 0.06 grams in 100 milliliters and a pH of 4. The maximum removal efficiency of the Chi-FA-Fe₃O₄ composite for CR dye was recorded as 99.82% at an initial concentration of 100 parts per million (ppm) CR dye for 150 minutes. Pursuant to the analysis of XRD, it has been confirmed that the compositing process was successfully executed, thereby yielding 2θ values indicative of Fe₃O₄ and FA. Additionally, an enhancement in the intensity of the Chi-FA-Fe₃O₄ composite was observed following the adsorption of CR dye. Concurrently, SEM analysis revealed that the Chi-FA-Fe₃O₄ composite and the Chi-FA-Fe₃O₄ composite exhibited an augmented intensity.
Effect of Non-Thermal Plasma on Biochar Properties from Sugarcane Bagasse and Banana Peel Dermawan, Denny; Satriavi, Aulia Diva; Nurhidayati, Dyah Isna; Mujiyanti, Dwi Rasy; Novitrie, Nora Amelia; Mayangsari, Novi Eka; Setiawan, Adhi
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 2 (2025): July 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i2.349-359

Abstract

Biochar produced from agricultural waste, such as sugarcane bagasse and banana peel, has gained significant attention owing to its potential environmental and industrial applications. This study aimed to enhance the physicochemical properties of biochar derived from these wastes using nonthermal plasma treatment. Biochar was produced via pyrolysis combined with non-thermal plasma treatment and then characterized to identify the differences. Characterization was performed using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and–Brunauer–Emmett Teller (Brunauer-Emmett-Teller) surface area analysis to evaluate changes in crystallinity, morphology, functional groups, and surface area. Nonthermal plasma treatment significantly altered the surface morphology of biochar, increasing its porosity and surface area. The BET surface area of sugarcane bagasse waste was 0.061 m²/g, which expanded to 87.50 m²/g after changing to biochar, whereas banana peel waste had a BET surface area of 0.007 m²/g, which increased to 427.2 m²/g after changed to biochar. The pyrolysis process on both biochars also reduced OH (hydroxyl) transmittance, as evidenced by FTIR analysis, which indicated water evaporation. Non-thermal plasma treatment substantially improved the physical and chemical properties of biochar compared to untreated biomass.
Co-Authors Adhi Setiawan Ahmad Erlan Afiuddin Alvido Toto Wijaya Ashifa, Naura Aqillafasha Bambang Antoko Cahyono, Luqman Denny Dermawan Denny Dermawan Dira Pratiwi, Dewi One Dwi Rasy Mujiyanti Dwikurniawan, Yoga Evada, Bernika Irnandianis Hardiansya, Rizal Hardiansyah, Rizal Nindyapuspa, Ayu Novi Eka Mayangsari Nurhidayati, Dyah Isna Radianto, Denny Oktavina Rahma, Aghissiva Antasya Rahmawati, Devi Ayu Satriavi, Aulia Diva Tarikh Azis Ramadani