Title:
Sludge Reduction and Biogas Recovery in Anaerobic Co-Digestion Using Acidogenic Fermented Fish By-Products with Ligno-Cellulose Materials
Author(s):
Choi, H.-J.
Document(s):
Paper
Abstract:
Fishery by-products and ligno-cellulose-based corn stalks were mixed and fermented under anaerobic conditions to obtain acidogenic fermented fishery broth (AFB).The sewage sludge andAFB were mixed in various ratios (7:3 (SF2), 5:5 (SF3) and 3:7 (SF4)) to observe sludge reduction and biogas production in the anaerobic co-digestion process.According to the kinetics analysis, the reaction delay timeof samples in which AFB was mixed sewage sludge in the anaerobic co-digestion process was shortened. In particular, the mixing ratio of 5:5 had the shortest reaction delay time, indicating that the reaction for sludge reduction and biogas production started the fastest compared to other samples.The sludge reduction efficiency of anaerobic tank used as a control showed the lowest removal efficiency of 39.16% VS,25.30% TSand 30.41% COD, whereas SF3 showed the highest removal efficiency of 87.60% VS,77.91% TS and 83.6% COD. In addition, cumulative biogas production was found to be 1365.12, 1593.58 and 835.91 mL/m3 for SF2, SF3 and SF4, respectively, and 2-3 times more than than of the control (411.93 mL/m3). Comprehensive analysis of the above results showed that AFB had a favorable effect on sludge reduction and biogas production in the anaerobic co-digestion process. The anaerobic co-digestion process with AFB is very efficient as it can simultaneously treat fishery waste and produce energy.
Keywords:
anaerobic co-digestion, biogas production, corn stalk, fishery by-product, sludge reduction, acidogenic fermentation
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Anaerobic Digestion for Biogas and Biomethane Production
Event:
29th European Biomass Conference and Exhibition
Session:
2DO.1.2
Pages:
497 - 502
ISBN:
978-88-89407-21-9
Paper DOI:
10.5071/29thEUBCE2021-2DO.1.2
Price:
FREE
