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Green Synthesis of Fe3O4 Nanoparticles Using Pineapple Peel Extract For Adsorption of Rhodamine B
Get PDFAbstractThis research aims to develop an environmentally friendly method for the synthesis of Fe₃O₄ nanoparticles using Tangkit pineapple peel extract with iron sand from the Batanghari River, Jambi, as raw materials. FTIR analysis detected Fe-O metal oxide clusters at a wavenumber of 533 cm⁻¹, confirming the presence of Fe₃O₄. The XRD diffraction pattern according to ICSD reference data number 01-076-0956 shows the highest intensity peak at an angle of 2θ 30.17°; 35.47°; 57.18°; and 62.77° with an average crystal diameter of 19.99 nm. SEM showed irregular particle morphology, while particle size analysis revealed an average particle size of 198 nm. Magnetic properties test using VSM shows that the nanoparticles are superparamagnetic with a saturation magnetization (Ms) of 26.25 emu/g. In the Rhodamine B adsorption test, the highest efficiency was achieved at a mass of 100 mg with a value of 95.21%. The optimum adsorption time occurred at 75 minutes with an efficiency of 98.52%. These results indicate that Fe₃O₄ nanoparticles synthesized via the green synthesis method using Tangkit pineapple peel extract have high potential for application in processing textile dye waste.Keywords: green synthesis, Fe3O4 nanoparticles, bioreductor, environmentally friendly. adsorbent.AbstrakPenelitian ini bertujuan mengembangkan metode ramah lingkungan untuk sintesis nanopartikel Fe₃O₄ menggunakan ekstrak kulit nanas Tangkit dengan pasir besi Sungai Batanghari, Jambi, sebagai bahan baku. Analisis FTIR mendeteksi gugus logam oksida Fe-O pada bilangan gelombang 533 cm⁻¹, mengonfirmasi keberadaan Fe₃O₄. Pola difraksi XRD sesuai data referensi ICSD nomor 01-076-0956 menunjukkan puncak intensitas tertinggi pada sudut 2θ 30,17°; 35,47°; 57,18°; dan 62,77° dengan diameter kristal rata-rata kristal sebesar 19,99 nm. SEM menunjukkan morfologi partikel tidak beraturan, sedangkan analisis ukuran partikel mengungkapkan rata-rata ukuran partikel 141,83 nm. Uji sifat magnetik menggunakan VSM menunjukkan nanopartikel bersifat superparamagnetik dengan magnetisasi saturasi (Ms) sebesar 26,25 emu/g. Pada uji adsorpsi Rhodamin B, efisiensi tertinggi tercapai pada massa 100 mg dengan nilai 95,21%. Waktu adsorpsi optimum terjadi pada 75 menit dengan efisiensi sebesar 98,52%. Hasil ini menunjukkan bahwa nanopartikel Fe₃O₄ yang disintesis melalui metode green synthesis menggunakan ekstrak kulit nanas Tangkit berpotensi tinggi untuk aplikasi dalam pengolahan limbah pewarna tekstil.Kata kunci: green synthesis, nanopartikel Fe3O4, bioreduktor, ramah lingkungan, adsorben
Inovasi Penerapan Ragam Hias Osing Pada Elemen Desain Interior
Get PDFIndonesia merupakan negara kepulauan dengan 38 provinsi yang memiliki berbagai karakteristik ragam hias yang unik dan berbeda-beda. Salah satunya ragam hias osing yang berasal dari provinsi Jawa Timur. Ragam hias osing dapat dilihat dari kerajinan tekstilnya yang dikenal dengan motif gajah oling, motif batik tertua di Kota Banyuwangi dan ukiran ragam hias pada rumah adatnya. Penelitian ini bertujuan sebagai upaya pelestarian budaya serta memberikan inovasi pada ekonomi kreatif dengan memanfaatkan ragam hias osing dalam bidang desain interior. Melalui penelitian kualitatif dengan metode studi literatur yang didapatkan lalu dianalisis, sehingga ditemukan bahwa ragam hias osing dapat diterapkan pada elemen desain interior seperti furniture dan elemen dekoratif lainnya tanpa menghilangkan makna yang terkandung didalamnya. Dengan adanya inovasi penerapan ragam hias pada desain interior dapat memberikan dampak positif bagi pengrajin lokal dengan memperkenalkan kekayaan keberagaman budaya Indonesia ke kancah dunia internasional. Dengan begitu dapat disimpulkan bahwa dengan adanya pemanfaatan ragam hias tradisional sebagai inovasi baru dalam bidang desain interior menjadikan langkah maju dan strategis dalam melestarikan warisan budaya Indonesia serta menjadikan faktor pendorong untuk sektor industri kreatif
Editorial
Get PDFThis JIFAM 6 (Special Issue 3) January 2024 publishes 6 papers related to embankment stability and soil stabilization to develop the sustainable asset management for road infrastructures.As regulated in Indonesian Scientific Journal Accreditation, a Scientific Joural can publish the Supplement and Special Edition.The JIFAM Editorial Team express their gratitude to the authors who already submitted their papers for the sixth volume (Special Issue 3)
Comparation of Limit Equilibrium Method (LEM) 2D on Safety Factor and Embankment Reinforcement
Get PDFThe analysis of slope stability is crucial during embankment planning to ensure safety and prevent landslides. A stable slope ensures the safety of surrounding infrastructure, minimizing the risk of damage. Therefore, with slope stability analysis can manage and maintain infrastructure assets. The primary method used to evaluate slope stability is the Limit Equilibrium Method, frequently employed in a 2D framework using various applications such as Plaxis LE and Geostudio. Using diverse applications for analysis can yield varying safety factors, influencing the required reinforcement. Hence, this study analyzed safety factors and the necessary geotextile reinforcement for embankments on soft soil featuring distinct heights, slopes, and widths in 2D. The analysis was performed using the Plaxis LE application, and the results were subsequently compared with those obtained from the Geostudio application. This research shows that the results of the embankment safety factors with the Plaxis LE application are different from those of the embankment safety factors with Geostudio, resulting in different embankment geotextile reinforcement namely the need for Plaxis LE geotextile reinforcement = 0.7 Geostudio geotextile reinforcement
Generalisasi Submodul Prima Bertingkat dan Modul Multiplikasi Bertingkat
Get PDFDiberikan grup dengan elemen satuan , ring bertingkat tipe dengan elemen identitas , dan modul bertingkat atas ring bertingkat tipe . Pada artikel ini, dibahas mengenai submodul prima lemah bertingkat yang akan digunakan untuk membangun konsep modul multiplikasi kuasi bertingkat. Modul disebut modul multiplikasi kuasi bertingkat jika untuk setiap submodul prima lemah bertingkat di , dapat dinyatakan sebagai untuk suatu ideal bertingkat di . Selain itu, dibahas juga mengenai submodul 2-absorbing bertingkat yang digunakan untuk membangun konsep modul multiplikasi absorbing bertingkat. Modul disebut modul multiplikasi absorbing bertingkat jika untuk setiap submodul 2-absorbing bertingkat di , dapat dinyatakan untuk suatu ideal bertingkat di . Penelitian ini sudah pernah dilakukan oleh Abu-Dawwas dkk. pada tahun 2022. Namun, masih ada beberapa hasil yang masih kurang tepat karena tidak berlaku secara umum. Selain itu, peneliti juga menambahkan beberapa sifat pada submodul prima lemah bertingkat untuk menyelidiki kelas modul multiplikasi kuasi bertingkat kedepannya
Assessing Water Quality in Nigerian Villages: An IoT-Based Monitoring of Three Rivers
No full textEnsuring safe and clean water is crucial for public health, especially in regions with limited access to reliable water quality testing. This study focuses on assessing water quality in three Nigerian villages using an IoT-based system. Traditional water quality monitoring methods are often expensive, time-consuming, and require specialized personnel and laboratory facilities. To overcome these challenges, we propose a low-cost, real-time water quality monitoring system utilizing the ESP32 microcontroller equipped with sensors for temperature, pH, dissolved oxygen, and conductivity. Our system collects and transmits data for continuous monitoring and analysis. The deployment in Nigerian villages along three rivers reveals that while pH levels are within safe limits, turbidity levels in two rivers exceed acceptable drinkingwater standards, highlighting the presence of particulate contamination. The system’s real-time capabilities and cost-effectiveness demonstrate its potential for broader application in resource-constrained areas. This study underscores the importance of IoT technologies in enhancing water quality monitoring and contributes to achieving the Sustainable Development Goals related to clean water and sanitatio
CONFLICT MITIGATION STRATEGIES IN HOUSING AND SETTLEMENT DEVELOPMENT PROJECTS: A CASE STUDY OF INDONESIA'S NEW NATIONAL CAPITAL CITY (IKN)
Get PDFThis study aims to highlight the conflict, especially those occurring in housing and settlement development projects, and provide relevant solutions to enhance project efficiency in New National Capital City (IKN), Indonesia. Site management involves a series of operations that combine various materials to achieve the final construction result.Therefore, to improve project productivity, it is essential to identify and implement key management techniques. Critical components of project execution and on-site management include integration management, site planning, resource management, site safety, monitoring, and supervision. Neglecting these components can lead to decreased productivity. Thus, addressing these issues and recognizing these components and tensions is essential.The study utilizes literature review, on-site observations, and semi structured interviews during the execution of construction projects. These conflicts were analyzed using factor analysis based on the average ranking obtained through questionnaire surveys. Data was collected from 48 respondents, selected based on simple random sampling from construction stakeholders. Feedback from the respondents was analyzed using the frequency for ranking purposes. The results identified seven main conflict factors. This aims to assist in conflict management in upcoming projects
EXPLORING ARCHITECTURAL ATTRIBUTES OF JAVANESE DWELLINGS: A CASE STUDY OF MR. MARYANTO’S CENTURY-OLD HOUSE
Get PDFThis paper examines the architectural characteristics of Javanese houses and investigates the factors that influence their development and evolution. The study focuses on Mr. Maryanto’s house, a third-generation inhabitant of the house, which is estimated to be more than a century old. The research delves into the historical transformations of the house's structure and materials, particularly the “usuk” and “reng” replacements. Additionally, it explores the presence of unique ornamental features, such as the “naga” motifs on the “dhadha peksi”, which is unusual for rural houses. The paper analyzes the spatial layout and function of the rooms within the house, revealing the significance of factors like cultural traditions, economic conditions, and environmental adaptations in shaping Javanese house architecture
Characteristics of Transportation Mode Selection in Manado Maritime City
Get PDFThe choice of transportation mode is one of the crucial aspects in urban transportation planning and development. Manado City as the economic and administrative center of North Sulawesi has experienced an increase in population and economic activity, which has an impact on transportation demand. This study aims to identify the characteristics of passengers in choosing transportation modes in Manado and to determine the factors that influence the choice of transportation modes. This research uses quantitative research methods. The results of the Structural Equation Modeling (SEM) test show the factors that influence the choice of transportation modes in Manado, namely travel costs, distance travel, and ease of access to modes. The CR value of travel costs to vehicle conditions is 7.456, the CR value of distance traveled to ease of access is 9.682, and the CR value of ease of access to online transportation is 4.654, conventional transportation is 8.282, and private vehicles is 7.365
Preliminary Study on Willingness to Pay for Adaptive Management in Komodo National Park: A Contingent Valuation Approach
Get PDFKomodo National Park (KNP), a UNESCO World Heritage Site, faces significant environmental challenges due to increasing tourism, climate change, and resource management issues. This preliminary study employs the Contingent Valuation Method (CVM) to estimate visitors' willingness to pay (WTP) for adaptive management initiatives aimed at preserving the park's unique biodiversity and ecological health. Conducted in Labuan Bajo, the main gateway to KNP, the study involved 50 respondents who were surveyed on their WTP for improved environmental quality and management. The binary logistic regression analysis revealed that higher income levels and gender significantly influence WTP, with higher income individuals and males being more likely to contribute financially. Marital status showed a negative association with WTP, suggesting that married individuals may have financial constraints. The study highlights the importance of understanding sociodemographic factors to design effective funding strategies for conservation. The findings underscore the need for targeted communication and engagement strategies to increase financial support for adaptive management. These insights will inform policy and management strategies to ensure the long-term sustainability of KNP