Konversi
Vol 7, No 2 (2018): Oktober 2018

EFFECTS OF TEMPERATURE-pH ON LIQUID PHASE MASS TRANSFER AND DIFFUSION COEFFICIENTS AT LEACHATE TREATMENT IN ANAEROBIC BIOREACTOR

Abdul Kahar (Department of Chemical Engineering, Faculty of Engineering, Mulawarman University Jl. Sambaliung No. 9, Gunung Kelua, Samarinda 75119, Indonesia)
IDAA Warmadewanthi (Department of Environmental Engineering, Faculty of Civil Engineering and Planning Institut Teknologi Sepuluh Nopember, ITS Jl. AR Hakim Sukolilo, Surabaya 60111, Indonesia)
Joni Hermana (Department of Environmental Engineering, Faculty of Civil Engineering and Planning Institut Teknologi Sepuluh Nopember, ITS Jl. AR Hakim Sukolilo, Surabaya 60111, Indonesia)



Article Info

Publish Date
18 Jun 2019

Abstract

Abstract - Leachate contains complex dissolved organic and inorganic substrates that are biodegradable and non-biodegradable. Principally, anaerobic treatment utilizes anaerobic bacteria to degrade the dissolved organic matters. Anaerobic treatment is very sensitive towards the change of temperature and pH. This research used an anaerobic bioreactor with volume of 160L, with a ratio of leachate:biogas was 70:30. Seeding, acclimatization and leachate treatment were executed at temperature 35°C; pH ambient, temperature 45°C; pH ambient, temperature 35°C; pH 7.2 and temperature 45°C; pH 8.0. Based on this research, that there is dependency on mass of solutes organic substrate (COD) in the leachate, at all operating conditions of leachate treatment in anaerobic bioreactor. Hence, the organic substrate concentration (COD) will affect the VFA, the liquid phase mass transfer and diffusion of solute organic. Consequently, the higher the temperature-pH, the higher the liquid-phase mass transfer, but lower diffusion coefficients is. Keywords: anaerobic bioreactor, diffusion, leachate, liquid-phase mass transfer 

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