ADSORPSI KOMPETITIF METILEN BIRU DAN METIL VIOLET MENGGUNAKAN ABU DASAR BATUBARA

• المؤلفون الرئيسيون: , DEWA WICAKSONO, , Dr. Nurul Hidayat Aprilita, M.Si
• التنسيق: Theses and Dissertations NonPeerReviewed
• منشور في: [Yogyakarta] : Universitas Gadjah Mada 2014
• الموضوعات: ETD
• الوصول للمادة أونلاين: https://repository.ugm.ac.id/132648/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=73187

In this research dye removal of methylene blue and methyl violet from aqueous solution using coal bottom ash as an adsorbent which is the waste of coal combustion from the PS. Madukismo, PT. Madubaru Yogyakarta has been studied. The research was consisted of characterization and identification of the components contained in coal combustion waste using FTIR (Fourier Transform Infrared Spectroscopy) which is used to determine the functional groups of coal bottom ash, XRD (X-ray Diffraction) which is used to measure the degree of crystallinity of coal bottom ash, and AAS (Atomic Absorption Spectrometer) which is used to determine the mineral content of coal bottom ash. The process of adsorption of methylene blue and methyl violet was performed by adding the adsorbent into the solution mixture of the dyes. The remaining dyes in the solution mixture were determined by UV-Vis spectrophotometer. The results of this research showed that coal combustion wastes in the form of bottom ash contain SiO2 and Al2O3 as the major components. The optimum process for the adsorption of 100 mL mixture of methylene blue and methyl violet with the concentration of 100 mg/L was achieved by the addition of 2.0 g adsorbent and the contact time of 30 minutes. Pseudo second order model was fitted for the adsorption of the two dyes in binary system, with the adsorption rate constant of 0.358 mg g-1 min-1 for methylene blue, and 0.286 mg g-1 min-1 for methyl violet. From the isotherm study, Freundlich isotherm model was found to be the best fit for this system, with the adsorption capacity of 7.80 � 10-4 mmol g-1 for methylene blue and 5.99 � 10-4 mmol g-1 for methyl violet.