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All Journal International Journal of Renewable Energy Development Jurnal Sains Materi Indonesia Bulletin of Chemical Reaction Engineering & Catalysis JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Syntax Literate: Jurnal Ilmiah Indonesia Al-Ard: Jurnal Teknik Lingkungan Jurnal Riset Teknologi Pencegahan Pencemaran Industri International Journal of Renewable Energy Development Jurnal Sains Materi Indonesia
Ratnawati Ratnawati
Chemical Engineering Department, Institut Teknologi Indonesia Jalan Raya Puspiptek Serpong 15320, Tangerang Selatan
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences Other

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Blending Process of Cellulose Nanofiber /Polyvin y l Alco hol (NFC/PVA) For Paper Coating Application Ni Made Sudri; Aniek Sri Handayani; Ratnawati; Athanasia Amanda Septevani; Mutiara Eka Puspita; Yuli Amalia Husnil; Yalun Arifin; Annisa Nurul Syabila; Muhamad Rofi Zul Qois
Jurnal Sains Materi Indonesia Vol. 24 No. 2 (2023): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2023.763

Abstract

This paper describes how to make films using polyvinyl alcohol (PVA) and nanofiber cellulose (NFC). In this study, different NFC and PVA ratios were varied. To achieve ideal condition during the film making process, several characteristics, including as density and viscosity, have been investigated using Taguchi method. The results showed two main outcomes. To obtain optimal viscosity, the NFC/PVA ratio factor is 5/95, the volume/volume ratio is 10%, and the sonication time is 7 minutes. For optimal density, several conditions can be used, including a NFC/PVA ratio of 10/90, volume/volume ratio of 3%, and a sonication time of 5 minutes. The experimental results confirmed the average viscosity response of 129.99 ± 13.33 and the S/N ratio of -42.64 ± 0.56. The experimental results of the Taguchi method were -42.64 ± 0.56 and the S/N ratio was -42.92 ± 0.67. Meanwhile, the response data for the Taguchi methodal density averaged at 1.042 ± 0.013 and the S/N ratio was -0.365 ± 0.104. For the results of the experimental condition were 1.126 ± 0.015 and the S/N ratio of -1.031 ± 0.124.From these data, it can be concluded that there is an increase in the average and variability which indicates that the blending process is getting better with the use of NFC.
Adsorption of Phenol and Iron In Wastewater Using a Mixture of Active Carbon and Zeolite Modified with Chitosan Ratnawati; Rian Hidayat; M. Cece Ariwirdana; Kudrat Sunandar; Wahyudin Wahyudin
Jurnal Sains Materi Indonesia Vol. 24 No. 1 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

Phenol (C6H5OH) and iron (Fe2+) contained in electroplating industrial wastewater are toxic even at small concentrations. One of the effective methods to remove these compounds is adsorption because the method is easy and simple. Activated carbon and zeolite are types of adsorbents that are often used in wastewater treatment, but both types of adsorbents are not selective in certain chemicals. In this study, modification of zeolite and activated carbon with chitosan was carried out to adsorb waste containing phenol and Fe2+. The variations used were pH (7 and 9) and the adsorbent composition to study its effect on the adsorption of phenol in the presence of Fe2+. Adsorption was carried out in a bed with circulating waste for 2 hours. Feed at pH 9 with adsorbent mixed of zeolite-chitosan composite (Z-Ch) and activated carbon-chitosan composite (AC-Ch) in a ratio of 1:1 gave the optimal results. Under these conditions, 94% and 97% of phenol and Fe2+ were adsorbed, respectively.
Co-Authors Andri Y. Aniek S Handayani Aniek Sri Handayani Aniek Sri Handayani Annisa Nurul Syabila Athanasia Amanda Septevani E. Enjarlis Farah Diba Toya Galuh Maulidyananda Is S Purwaningsih Iyus Hendrawan Jessica Ambarwati Idat Joko Noveriarto Khadijah Khadijah kudrat sunandar Linda A. Yoshi Linda Aliffia Yoshi, Linda Aliffia M. Cece Ariwirdana Marcelinus Christwardana Muhamad Rofi Zul Qois Mutiara Eka Puspita Ni Made Sudri Perak Samosir Rian Hidayat S. Slamet Saharudin Saharudin Satrio Kuntolaksono Slamet Slamet Sudirman Sudirma Surya Aji Wibawa Wahyudin Wahyudin Yalun Arifin Yuli Amalia Husnil Yuli Amalia Husnil Zaenal K.