Rahayu, Aster and Maryudi, Maryudi and Fajri, Joni Aldilla and Lim, Lee Wah and NURAINI, NURAINI (2022) SYNTHESIS OF SILICA-PEG BY PHYSICALLY COATING WITH PEG 4000 FOR ABSORPTION OF ION NITRATE. [Artikel Dosen]

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All production activities will eventually produce waste, especially liquid waste. The nitrate ion (NO3 - ) is one of the substances in liquid waste that can have a significant impact on water systems and human health. Several methods can be used to treat the nitrate contained in the water, such as adsorption, phytoremediation, and wetland treatment. One of its methods was adsorption. The silica was modified with polymer due to its huge carbon chain. This research was focused on optimizing the ability of silica-based materials using PEG by physically coating them since PEG has a long carbon chain that could be transformed into a helix. In this research, the adsorbent will be prepared from modified silica gel with PEG 4000 by physical coating. Several parameters will be observed, including the effect of coating time, silica-PEG ratio, and PEG concentration. The capacity of silica-PEG to absorb NO3 - is being studied. The characterization of functional group content in silica-PEG was carried out by Fourier Transform Infrared (FTIR). The study results show that the coating time was 10 minutes with the ratio of silica to PEG of 1:5, and the concentration of PEG used was 15%, indicating the optimum performance of silica-PEG when used as an absorbent, which achieved 84.44 % nitrate removal. An increase in the absorption capacity of silica-PEG demonstrates the ability of silica-PEG as a porous material. It was compared to silica gel without the PEG coating process, which was 9.09% to 84.44%.

Item Type: Artikel Dosen
Keyword: Adsorption; Nitrates; PEGs; physically coating.
Subjects: Q Science > QD Chemistry
Divisi / Prodi: Faculty of Industrial Technology (Fakultas Teknologi Industri) > S2-Chemical Engineering(S2-Teknik Kimia)
Depositing User: Ph.D Aster Rahayu
Date Deposited: 27 Mar 2023 03:27
Last Modified: 31 Mar 2023 01:53

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