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All Journal Reaktor JRST (Jurnal Riset Sains dan Teknologi)
Asep Riswoko
Center for Material Technology-Agency for the Assessment and Application of Technology Jl. M.H. Thamrin No. 8, Jakarta 10340, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology

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Adsorption using Selective Adsorbents as An Effective Method for Rare Earth Elements Recovery–a Review Jamilah, Nurul; Cahaya, Adam B; Riswoko, Asep
Reaktor Volume 23 No.3 December 2023
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.23.3.77-91

Abstract

Rare Earth Elements (REEs) are strategically important for the industry, especially in the manufacture of high-technology products and components, such as electric batteries for energy storage, energy conversion, defense and security industry, electric vehicles, components on smartphones, laptops, liquid crystal display, and others. Generally, REEs are processed by liquid-liquid extraction. However, this process is very costly due to the use of chemicals and high operational costs, so the waste has the potential to pollute the environment. Currently, innovative separation/recovery techniques are continuously being developed for effective and environmentally friendly extraction of rare earths. The adsorption method using the optimal adsorbent is one of the most efficient methods for recovering REEs at low concentrations. This method offers several advantages, including high release effectiveness, ease of installation and operation, low maintenance costs, and reduced chemical consumption. This study reviews the mechanism, characterization, and several adsorbents from natural to synthetic materials, especially nanocomposite-based adsorbents for the recovery of rare earths. In addition, the discussion of several parameters that affect the adsorbent. However, the results of several methodological breakthroughs that have been carried out show how much further research is needed
Eksplorasi Material Bioplastik dari Limbah Kulit Jeruk untuk Perancangan Produk Tas Belanja Naurah, Alifah; Azhar, Hanif; Pambudi, Terbit Setya; Yurohman, Yurohman; Riswoko, Asep
JRST (Jurnal Riset Sains dan Teknologi) Volume 8 No. 1 Maret 2024: JRST
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrst.v8i1.18291

Abstract

Sampah kantong plastik merupakan salah satu penyumbang limbah plastik terbanyak sehingga diperlukan adanya alternatif penggunaan material bioplastik yang mudah terurai oleh lingkungan. Kulit jeruk sebagai sisa hasil pertanian memiliki potensi besar untuk diolah menjadi bahan baku material bioplastik. Material bioplastik berpotensi sebagai alternatif pengganti material yang sulit terurai oleh alam. Pada studi ini, limbah kulit jeruk yang digunakan sebagai bahan baku pembuatan bioplastik, dirancang menjadi tas belanja dengan metode perancangan SCAMPER agar memiliki kualitas dan fungsi yang memadai. Eksplorasi material bioplastik dengan komposisi kulit jeruk, alginat, serat wol, gliserin, dan minyak kelapa masing-masing 19%, 21%, 3%, 47%, 9% dilakukan dengan metode pengeringan alami pada suhu dan kelembaban yang dikondisikan selama 3 hingga 5 hari dan setelah itu hasil material bioplastik dikarakterisasi menggunakan uji mekanik. Bahan bioplastik dari kulit jeruk memiliki ikatan fisik diantara bahan pembentuk dengan kuat tarik, daya beban, elongasi rata-rata, ketahanan robek masing-masing 1,01 N/mm2, 4,0 N, 87,7%, dan 4,1 N. Rancangan tas belanja dari lembaran kulit jeruk ini memiliki ukuran tas 25,5 x 25 cm dengan lebar tas 7,5 cm, warna oranye alami dengan nilai estetika lebih dibandingkan dengan tas belanja konvensional berbahan dasar kain.
Co-Authors Cahaya, Adam B Hanif Azhar Jamilah, Nurul Naurah, Alifah Terbit Setya Pambudi Yurohman, Yurohman