Effects of SDM Concentration on Methane Production and Enzyme Activities during Anaerobic Fermentation
YU Chen
ZHAN Wei
MEI Ying
HE Shuyan
CAI Yinghong
SONG Chengmou
DU Dongyun
Abstract：The degradation rate of SDM (sulfadimethoxine sodium),the variation of methane production and enzyme activities in pig manure spiked with different concentrations of SDM were studied during anaerobic fermentation process.There are four treatments for SDM,including CK (0 mg/kg),T1 (30 mg/kg),T2 (60 mg/kg) and T3 (120 mg/kg).The results showed that a similar inhibition of urease activities were measured at the beginning and at the end of the incubation period but not at the intermediate time.The dehydrogenase activities inhibition was the highest at lowest level and decreased with increasing concentration of SDM (T1 ≤T3).The degradation of SDM in anaerobically digested effluent obey the first order kinetics (T2 ＞T1 ＞T3).At the end of fermentation,SDM enhanced the biogas production about two-fold compared to the control.Adding SDM fostered the growth of acid-producing bacterial communities,which synthesized more precursors for methane formation.
Keywords：manuresulfadimethoxine sodiumanaerobic digestionenzymatic activitymicrobial community
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 18-24 )