Blue Methylene Retrieval using Silica-Salicylic Acid Modified Filtering

DOI: https://doi.org/10.14710/jksa.21.1.19-23
License URL: http://creativecommons.org/licenses/by-sa/4.0/

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Article Info
Published: 31-01-2018
Section: Research Articles
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The retrieval of methylene blue using a silica-modified sulfide-salicylic acid has been carried out. Salicylate-silica-acid alloys have been prepared by comparing the four media ie filter paper, silica-filter paper, salicylic acid-filter paper and salicylic acid-silica-filter paper. This study aims to study the recovery of methylene blue using salicylic acid-modified silica filtering with various parameters on the adsorption and desorption process. The results showed that the salicylic acid-silica alloy could improve the capability of methylene blue removal. The result of pH variation on the adsorption process showed that at pH 7 methylene blue can be taken 92.89%. Whereas at concentration variation, salicylic acid at 5 mM can take methylene blue equal to 92.86%. The desorption results showed that pH 1 methylene blue could be desorbed at 308.89 mg/g, while the variation of contact time of desorption ie at 110 minutes could an saturate the blue methylene by 589,61 mg/g. The UV-Vis analysis showed a decrease in absorbance in salicylic acid after contact with silica. The FTIR analysis also shows that in salicylate-silica-acid alloys there are Si-O groups derived from silica and C = O derived from salicylic acid.

Keywords

methylene blue; silica; salicylic acid

  1. Desriana Chrisyanti 
    Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University Jl. Prof. Soedarto, SH., Tembalang, Semarang, Indonesia
  2. Gunawan Gunawan  Orcid Scopus Sinta
    Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University Jl. Prof. Soedarto, SH., Tembalang, Semarang, Indonesia
  3. Abdul Haris  Scopus Sinta
    Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University Jl. Prof. Soedarto, SH., Tembalang, Semarang, Indonesia
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