20.500.12556/RUL-162437 The influence of microfibres in municipal sludge on biogas production Utjecaj mikrovlakana u mulju uređaja za pročišćavanje komunalnih otpadnih voda na proizvodnju bioplina Wastewater treatment plants (WWTPs) contribute to the release of microplastics into the environment. While the removal efficiency of MPs in WWTPs can reach up to 99.9 %, the highest amount of microplastics is retained in the sludge. Anaerobic digestion, one of the most promising and common processes, can help reduce sludge volume and odour, and due to the formation of biogas, mainly consisting of methane (CH$_4$) and carbon dioxide (CO$_2$), can help decrease the operating costs of WWTPs. A test measuring the inhibition of biogas production using the OxiTop® measuring system was employed to determine the effect of added microfibres (MFs) on biogas production. Particles less than 1 mm in size of polyester, polyamide, and polyacrylic, were added to anaerobic sludge at concentrations ranging from 0.05 to 0.10 gl$^{-l}$ to simulate their effect on biogas production. The yields of CH$_4$ and CO$_2$ produced during anaerobic digestion of the MFs-contaminated sludge were determined. The addition of MFs to sewage sludge affects methane production. The results indicated that the lowest added concentrations of 0.05 gl$^{−1}$ of MFs promoted methane production, while the presence of 0.1 gl$^{−1}$ decreased methane production for all types of MFs used. Polyacrylic at 0.1 gl$^{−1}$ had the most negative effect on methane production (up to 27 %), while polyamide at 0.05 gl$^{−1}$ reached the highest methane production (up to 25 %). anaerobic digestion methane production polyester polyamide polyacrylic anaerobna digestija proizvodnja metana poliester poliamid poliakril true false true Angleški jezik Hrvaški jezik Članek v reviji 2024-09-23 12:24:09 2024-09-23 12:24:10 2024-10-10 09:52:05 0000-00-00 00:00:00 2024 0 0 Str. 383-388 br. 9/10 Vol. 73 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 628.31:678 0022-9830 10.15255/KUI.2023.055 208486659 1-383-388-KUI-9-10-2024.pdf 1-383-388-KUI-9-10-2024.pdf 1 729BC7F7305D16298962E35F1D5FD317 5b7704c68db7d6d66859df4dd0bd21cfd1d7ed59207dc01c26a151a15d6deb57 07bd8e83-7998-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=191766 http://silverstripe.fkit.hr/kui/arhiva-brojeva/article/1070 1 daf5c900-7995-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=191763 Fakulteta za kemijo in kemijsko tehnologijo Zdravstvena fakulteta 0 0 0