期刊
BIORESOURCE TECHNOLOGY
卷 281, 期 -, 页码 401-411出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.02.106
关键词
Methanosaeta concilii; Synergistic inhibition; NH3; Na+; H2S; Anaerobic digestion
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2018R1A2B3005232]
- 'Human Resources Program in Energy Technology' of the KETEP - MOTIE, Republic of Korea [20144030200460]
- National Research Foundation of Korea [2018R1A2B3005232] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Single and combined inhibition of lag time lambda and specific methanogenic activity R-CH4 of Methanosaeta concilii by NH3, Na+ and H2S were investigated using inhibition tests with a single inhibitor and a 3(3) full-factorial experiment of NH3, Na+ and H2S concentrations (1.5 <= total ammonia nitrogen (TAN)/L <= 4.5 g, 1 <= Na+/L <= 4.3 g, 14.2 <= total hydrogen sulfide sulfur (THSS)/L <= 836 mg). All three inhibitors significantly increased. and reduced R-CH4 of M. concilii. The half-maximal inhibitory concentrations of NH3, Na+ and H2S for M. concilii were 6.4 g TAN/L, 5.2 g Na+/L and 1.6 g THSS/L. Partial cubic models adequately approximated the corresponding response surfaces of lambda and R-CH4 from the 3(3) full-factorial experiment. The inhibitors inhibited R-CH4 synergistically, but inhibited lambda in a complex manner. The combination of NH3 and Na+ showed the strongest synergistic inhibition of both lambda and R-CH4.
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