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All Journal International Journal of Science Technology and Health
Kurnia Sri Yunita
Institut Sains Teknologi dan Kesehatan (ISTEK) ‘Aisyiyah Kendari
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Health Professions Public Health

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Photoelectrocatalytic Degradation of Organic Compound Congo Red Using TiO2/Ti Electrode Muh. Edihar; Kurnia Sri Yunita; Kaharuddin Kaharuddin
International Journal of Science Technology and Health Vol 1 No 1 (2023): Science Technology and Health
Publisher : LPPM ISTEK 'Aisyiyah Kendari

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Abstract: In this study, we synthesized photobilized TiO2 on a Ti plate and tested its photoelectrocatalytic activity towards Congo Red. The background of this research is to develop an effective and environmentally friendly water treatment method. The main method used was the sol-gel synthesis of TiO2 prepared from titanium tetra isopropoxide as a complexing agent, followed by photobilization on a Ti plate. Material characterization was conducted using XRD technique, portable Potentiostat (e-DAQ), and UV-Vis DRS (Diffuse Reflectance Spectrophotometric) spectroscopy. The results of this research showed that the TiO2 synthesis produced Anatase crystal structure with particle size of 13–16 nm and a band gap of 3.20 eV. Furthermore, the photoelectrocatalysis test demonstrated that TiO2/Ti exhibited activity in degrading Congo Red. The main conclusion of this study is that the synthesis of TiO2/Ti using the Sol-Gel method and immobilization on a Ti plate can enhance the photodegradation efficiency towards Congo Red. This finding has significant implications in the development of more effective and environmentally friendly water treatment technologies.
Industrial Waste Treatment using TiO2 Modified Clay as Adsorbent-Photocatalyst: Mini Review Kurnia Sri Yunita; Andika Mayansara; Rosmini Rosmini; La Ode Agus Salim
International Journal of Science Technology and Health Vol 1 No 1 (2023): Science Technology and Health
Publisher : LPPM ISTEK 'Aisyiyah Kendari

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Every year, the global industrial sector continues to experience rapid development, contributing to economic growth rates, especially in the textile industry. This has led to an increase in the amount of textile dye waste being distributed into the environment. One solution to address the issue of textile dye waste is by modifying clay with TiO2 (TiO2/clay) using degradation-adsorption techniques. In recent decades, the modification of clay minerals has become crucial due to their diverse potential as catalysts, adsorption media, and ion exchange agents. TiO2 serves as a medium for ion insertion (intercalation), which enhances pore and surface area. This study explains the properties of clay, the photocatalytic properties of TiO2, surface characteristics, and the photocatalytic/adsorption method on the TiO2/clay composite. Various types of minerals have been inserted, such as rectorite, montmorillonite, kaolinite, vermiculite, and halloysite, between the layers of clay minerals through different methods and applications. The performance enhancement of tested dyes is carried out by doping metals into the photocatalytic/adsorption material
Performance Test of Residu Powder Distillation from Fermentation Result Cocoa Fruits (Theobroma Cacao L.) as Adsorbent For Metal Ions (Cr3+, Fe3+, Pb2+) Kaharuddin Kaharuddin; Kurnia Sri Yunita; Muh. Edihar; Mawaddah Zaqinah Diah; Salniati Hade; Sapril Kartini
International Journal of Science Technology and Health Vol 2 No 1 (2024): Science, Technology and Health
Publisher : LPPM ISTEK 'Aisyiyah Kendari

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Research this which is used as an adsorbent powder obtained through hydrolysis, fermentation and distillation of cacao fruit skin. This study aims to determine the ability of the cacao fruit skin powder to adsorb metal ions chromium (Cr3+), iron (Fe3+) and Lead (Pb2+) with adsorbent mass variation. Adsorption is done on metal chromium (Cr3+), iron (Fe3+) and lead (Pb2+) with three variations of the adsorbent mass of 0.25, 0.50 and 0.75 grams. The results showed that the performance of cacao fruit skin powder the most effective to metal ions lead (Pb2+) with percent adsorption 97.70%, for metal ions iron (Fe3+) with percent adsorption 94.33%, and crom (Cr3+) metal ions with the percent adsorption was 89.71% with adsorbent mass of 0.75 grams.
Co-Authors Andika Mayansara Kaharuddin Kaharuddin La Ode Agus Salim Mawaddah Zaqinah Diah Muh. Edihar Rosmini Rosmini Salniati Hade Sapril Kartini