López-Escobar Luis A, Martínez-Hernández Sergio, Corte-Cano Grisel, Méndez-Contreras Juan M
a Instituto de Biotecnología y Ecología Aplicada (INBIOTECA), Universidad Veracruzana , Xalapa , Veracruz , México.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2014;49(14):1710-7. doi: 10.1080/10934529.2014.951258.
The influence of the increase of the organic loading rate (OLR) on methane production in a continuous stirred-tank reactor (CSTR) from physicochemical sludge generated in a poultry slaughterhouse was evaluated. Total solid (TS) to obtain OLR of 1, 5, 10 and 15 g VS L(-1) day(-1), with hydraulic retention times of 29, 6, 6 and 4, respectively, were conditioned. The results showed a decrease in pH levels and an increase in the theoretical volatile fatty acids (VFA). While the yield of methane production decreased from 0.48 to 0.10 LCH4/g VSremoved, respectively, the OLR-10 managed on average 38% removal of volatile solids (VS) and a yield biogas production of 0.81 Lbiogas g(-1) VSremoved and 1.35 L day(-1). This suggests that the OLR increases in an anaerobic system from physicochemical sludge only inhibits the methanogenic metabolism, because there is still substrate consumption and biogas production.
评估了在连续搅拌釜式反应器（CSTR）中，有机负荷率（OLR）的增加对家禽屠宰场产生的物理化学污泥甲烷产量的影响。分别调节总固体（TS），以获得1、5、10和15 g VS L⁻¹ d⁻¹的OLR，水力停留时间分别为29、6、6和4天。结果表明pH值水平下降，理论挥发性脂肪酸（VFA）增加。虽然甲烷产量分别从0.48降至0.10 L CH₄/g VS去除，但OLR为10时平均可去除38%的挥发性固体（VS），沼气产量为0.81 L 沼气 g⁻¹ VS去除和1.35 L d⁻¹。这表明，仅来自物理化学污泥的厌氧系统中OLR的增加仅抑制产甲烷代谢，因为仍有底物消耗和沼气产生。
