A Comparative Study of Biogas Production from Cattle Slaughterhouse Wastewater Using Conventional and Modified Upflow Anaerobic Sludge Blanket (UASB) Reactors
| Autor: | Mohammed Ali Musa, Mohd Razif Harun, Syazwani Idrus, Abdul Malek Abdul Wahab, Tuan Farhana Tuan Mohd Marzuki |
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| Rok vydání: | 2019 |
| Předmět: |
anaerobic digestion
Hydraulic retention time 020209 energy Health Toxicology and Mutagenesis UASB reactors HRT Alkalinity Biomass lcsh:Medicine OLR 02 engineering and technology 010501 environmental sciences Wastewater COD 01 natural sciences Waste Disposal Fluid Methane Article cattle slaughterhouse wastewater chemistry.chemical_compound Bioreactors Biogas Waste Management 0202 electrical engineering electronic engineering information engineering Animals Anaerobiosis 0105 earth and related environmental sciences lcsh:R Public Health Environmental and Occupational Health Pulp and paper industry Anaerobic digestion chemistry Biofuels Environmental science Cattle Abattoirs Mesophile |
| Zdroj: | International Journal of Environmental Research and Public Health Volume 17 Issue 1 International Journal of Environmental Research and Public Health, Vol 17, Iss 1, p 283 (2019) |
| ISSN: | 1660-4601 |
| Popis: | Cattle slaughterhouses generate wastewater that is rich in organic contaminant and nutrients, which is considered as high strength wastewater with a high potential for energy recovery. Work was undertaken to evaluate the efficiency of the 12 L laboratory scale conventional and a modified upflow anaerobic sludge blanket (UASB) reactors (conventional, R1 and modified, R2), for treatment of cattle slaughterhouse wastewater (CSWW) under mesophilic condition (35 ± 1 ° C). Both reactors were acclimated with synthetic wastewater for 30 days, then continuous study with real CSWW proceeds. The reactors were subjected to the same loading condition of OLR, starting from 1.75, 3, 5 10, 14, and 16 g L&minus 1d&minus 1, corresponding to 3.5, 6, 10, 20, 28, and 32 g COD/L at constant hydraulic retention time (HRT) of 24 h. The performance of the R1 reactor drastically dropped at OLR 10 g L&minus 1, and this significantly affected the subsequent stages. The steady-state performance of the R2 reactor under the same loading condition as the R1 reactor revealed a high COD removal efficiency of 94% and biogas and methane productions were 27 L/d and 89%. The SMP was 0.21 LCH4/gCOD added, whereas the NH3-N alkalinity ratio stood at 651 mg/L and 0.2. SEM showed that the R2 reactor was dominated by Methanosarcina bacterial species, while the R1 reactor revealed a disturb sludge with insufficient microbial biomass. |
| Databáze: | OpenAIRE |
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