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- W2989061504 abstract "In the present work, a laboratory scale anaerobic upflow reactor (UASB) was operated with a hydraulic retention time (6 h) and at psychrophilic temperature (< 20 oC). The UASB reactor treated wastewater from a chocolate industry with two applied organic volumetric loads (OLR apl ). Each OLR apl corresponded to an experimental stage: experimental stage I with 1.8 ± 0.8 kg soluble oxygen chemical demand ([DQO s ]/m 3 /d) and experimental stage II with 3.5 ± 0.9 kg COD s /m 3 /d. The objective of this research was to evaluate the removal efficiency of CODs (RE), biogas production (BP) and experimental cell yield ( Y exp ) within the laboratory scale UASB reactor. The control parameters monitored were pH, temperature and flow. Alkalinity, volatile fatty acids and COD s were analyzed in the influent and effluent, while suspended solids were analyzed inside the reactor and in the effluent. The RE during the steady state of the two experimental stages was greater than 90 %. The high RE obtained showed that the UASB reactor efficiently treated the industrial wastewater at low temperature with the OLR apl . BP increased when OLR apl increased (1.6 ± 0.8 and 3.5 ± 1.3 L/d of OLR apl of 1.8 and 3.5 kg COD s /m 3 /d, respectively [1 atm, 273 K]). The Y exp of experimental stage II was high (0.11 kg SSV/kg COD rem ). The high Y exp of experimental stage II could be due to the influence of psychrophilic temperature in the growth rate of anaerobic microorganisms." @default.
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- W2989061504 date "2019-11-01" @default.
- W2989061504 modified "2023-09-26" @default.
- W2989061504 title "TRATAMIENTO DE UN AGUA RESIDUAL INDUSTRIAL A TEMPERATURA PSICROFÍLICA CON UN REACTOR UASB" @default.
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- W2989061504 doi "https://doi.org/10.20937/rica.2019.35.04.10" @default.
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