Double-edged effect of tar on anaerobic digestion: Equivalent method and modeling investigation

Hangyu Sun, Ziyi Yang, Guangqing Liu, Yi Zhang, Yen Wah Tong and Wen Wang

Energy, 2023, vol. 277, issue C

Abstract: This study investigated the influence of real tar (RT) and synthetic tar (ST) on anaerobic digestion (AD). Mapping relationship was built effectively between ST set and RT set through equivalent method. Both sets performed the double-edged effect on AD: low dosage of tar performed stimulated effect and high dosage caused inhibited effect. Anaerobic Digestion Model No.1 (ADM1) was modified and extended by introducing kinetic parameters (inhibition constant: KI, Monod maximum uptake rate: km, Monod half saturation constant: Ks) of tar to describe related degradation process. Model calibration with ST set data achieved accurate simulation of methane production with satisfactory R2 (0.80–0.97), and model validation was conducted with RT set data. The linkage between kinetic parameters and microbial community was further bridged. The decrease of km_H2 (km of hydrogen) value was less than km_ac (km of acetate) value, corresponding to the less sensitivity of hydrogenotrophic methanogenesis to tar toxicity as reflected by 16S rRNA. Modified ADM1 could help in understanding AD system macroscopically and microscopically.

Keywords: Anaerobic digestion model No.1; Tar; Kinetic parameters; Mapping relationship (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223011325
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:277:y:2023:i:c:s0360544223011325

DOI: 10.1016/j.energy.2023.127738

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().