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Aziz Askaputra
Departemen Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada Jln. Grafika No. 2 Kampus UGM, Yogyakarta 55281
Chemical Engineering, Chemistry & Bioengineering

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Pengaruh variasi suhu hidrotermal dan aktivator kalium hidroksida (KOH) terhadap kemampuan hydrochar sebagai adsorben pada proses adsorpsi limbah cair metilen biru Aziz Askaputra; Ahmad T. Yuliansyah
Jurnal Rekayasa Proses Vol 14 No 2 (2020): Volume 14, Number 2, 2020
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.57394

Abstract

Oil palm shell is one of biomass-wastes which is abundantly found in palm oil industries. Its economical value can be enhanced by converting it into hydrochar using a hydrothermal carbonization process (HTC). In this study, preparation of oil palm shell hydrochar was performed and the material was used as adsorbent to remove methylene blue from waste water. Effects of HTC temperature, KOH activator concentration, and adsorption time were studied. Functional groups of hydrochar were evaluated by Fourier transform infrared (FTIR) spectroscopy. Meanwhile, the uptake capacity of hydrochar to adsorp methylene blue was measured by using UV-Vis spectrophotometer. The results showed that dehydration and decarboxylation reactions took place more progressively at the higher temperature of HTC. It was also found that activation process resulted higher removal efficiency of methylene blue. The highest adsorption capacity (16.58 mg/g, with removal efficiency 99.51%) was obtained by hydrochar prepared by HTC 270°C, KOH 1.5 N, and carried out for 80 minutes.
Co-Authors Ahmad T. Yuliansyah