Abstract：
This study applied granular activated carbon (GAC) to improve the anaerobic digestion of long-chain fatty acid (LCFA). New kinetics were considered to describe the effect of GAC on the LCFA degradation, including i) The adsorption kinetics of GAC for LCFA, ii) The β-oxidation pathway of LCFA, iii) The attached biomass improved by direct interspecies electron transfer (DIET). The developed model simulated the anaerobic digestion of stearic acid, palmitic acid, myristic acid, and lauric acid with 1.00 and 2.00 g l-1 of GAC. The simulation results suggested that adding GAC led to the increase of km,CnGAC and km,acGAC. As the concentration of GAC increased, the values of kinetic parameters increased while the accumulated acetate concentration decreased. Thus, GAC improved the kinetic parameters of the attached syntrophic communities.
摘要：
本研究应用颗粒活性炭（GAC）改善长链脂肪酸（LCFA）的厌氧消化。新的动力学被认为描述了GAC对LCFA降解的影响，包括i)GAC对LCFA的吸附动力学，ii)LCFA的β-氧化途径，iii)通过直接种间电子转移(DIET)改善附着的生物质。所开发的模型模拟了硬脂酸的厌氧消化，棕榈酸,肉豆蔻酸，和月桂酸与1.00和2.00gl-1的GAC。仿真结果表明，加入GAC导致公里数增加，CnGAC和km，ACGAC。随着GAC浓度的增加，当积累的乙酸浓度降低时，动力学参数值增加。因此，GAC改善了附着互养群落的动力学参数。
