1Setia Budi University, Indonesia
2Universitas Setia Budi, Indonesia
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@article{JIL45424, author = {Sunardi Sunardi and Silviana Silviana}, title = {Transformasi Abu Vulkanik dan Limbah Seng menjadi Nanokomposit ZnO-SiO2 dan Aplikasinya untuk Degradasi Rhodamin B}, journal = {Jurnal Ilmu Lingkungan}, volume = {20}, number = {4}, year = {2022}, keywords = {Volcanic ash; zink waste; Nanocomposite ZnO/SiO2; rhodamine B}, abstract = {Rhodamine B is a non-biodegradable organic pollutant that is difficult to decompose by microorganisms. If it is possible to be degraded it will take a long time. The semiconductor used is ZnO using SiO 2 host material. The reason for using SiO 2 is that apart from high efficiency, there are also abundant raw materials because the eruption of Mount Merapi occurs regularly every 4 years. The high content of SiO 2 in volcanic ash can be utilized and processed into silica gel through the formation of potassium silicate resulting from the reaction between SiO 2 in volcanic ash and potassium hydroxide. In addition to the presence of abundant SiO 2 , ZnO sources from lathe workshop waste are also easily obtained. The manufacture of ZnO/SiO 2 nanocomposites was carried out using the sol – gel method because it is easy and has high effectiveness. ZnO/SiO 2 nanocomposite was applied as an adsorbent to degrade Rhodamine B. This study aims to determine the character of ZnO/SiO2 nanocomposite and to determine the best conditions for optimal degradation. Synthesis of ZnO/SiO 2 nanocomposite based on volcanic ash and zinc waste resulted in a composite size with a size range of 100-200 nm and a uniform circular shape. The results of the FTIR test show that SiO is at a wavelength of 993.34 and 1109.07 cm-1, while ZnO is at a wavelength of 443.63 cm-1. The XRD results of ZnO/SiO 2 nanocomposite are known to peak at 2𝜃, namely 30.42 o , 31.56 o , and 44.40 o . The application of dye degradation on UV irradiation, as well as looking for pH, time, and concentration gave the maximum Rhodamine B degradation value. The results of this study indicate that the highest efficiency in decreasing the concentration of Rhodamine B was obtained at pH 3 with a contact time of 60 minutes and a concentration of Rhodamine B of 10 ppm. The degradation efficiency of Rhodamine B obtained under these conditions is 95.8690%. Based on the concentration variation data processing using the Langmuir isotherm equation, it is known that the adsorption capacity of Rhodamine B is 97.3458521%.}, pages = {856--871} doi = {10.14710/jil.20.4.856-871}, url = {https://ejournal.undip.ac.id/index.php/ilmulingkungan/article/view/45424} }
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JURNAL ILMU LINGKUNGAN ISSN:1829-8907 by Graduate Program of Environmental Studies, School of Postgraduate Studies is licensed under a Creative Commons Attribution 4.0 International License. Based on a work at www.undip.ac.id.