TY - GEN
T1 - The effect of acetate additives on inoculum on Vs, CoD and microbial communities on food waste anaerobic digestion
AU - Fitri, Maulida
AU - Priadi, Cindy Rianti
N1 - Publisher Copyright:
© 2020 Author(s).
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/5/4
Y1 - 2020/5/4
N2 - The inoculum is a growth medium for microorganisms to optimize their growth and optimizes the performance of the Anaerobic Digestion (AD) reactor. Acetate additives on the inoculum are expected to optimize the formation of methanogenic microorganisms that can improve the performance of anaerobic fermentation. There are 2 types of inoculums used in this study, namely natural inoculum and modified inoculum. Natural inoculum is made from cow manure diluted with a ratio of 1:1. Meanwhile, modified inoculum is made of shrimp paste, granulated sugar, rotten banana tree trunks, milk, bran, yeast extract, Lactobacillus MRS Broth, rumen fluid, and acetate addition. The parameters tested in this study include microbial diversity, biogas production, Volatile Solids Destruction (VSD), and Chemical Oxygen Demand removal (CODr). The results showed that acetate additives are not proven to enrich the population of methanogenic microorganisms and biogas production. However, modified inoculums with acetate additives are shown to increase methane concentration, VSD up to 91%, and CODr up to 99.5%. This shows that the modified inoculum has great potential as a growth medium to treat food waste using Anaerobic Digestion (AD) with the help of pH control, which corresponds with the optimum pH range for the methanogenesis stage.
AB - The inoculum is a growth medium for microorganisms to optimize their growth and optimizes the performance of the Anaerobic Digestion (AD) reactor. Acetate additives on the inoculum are expected to optimize the formation of methanogenic microorganisms that can improve the performance of anaerobic fermentation. There are 2 types of inoculums used in this study, namely natural inoculum and modified inoculum. Natural inoculum is made from cow manure diluted with a ratio of 1:1. Meanwhile, modified inoculum is made of shrimp paste, granulated sugar, rotten banana tree trunks, milk, bran, yeast extract, Lactobacillus MRS Broth, rumen fluid, and acetate addition. The parameters tested in this study include microbial diversity, biogas production, Volatile Solids Destruction (VSD), and Chemical Oxygen Demand removal (CODr). The results showed that acetate additives are not proven to enrich the population of methanogenic microorganisms and biogas production. However, modified inoculums with acetate additives are shown to increase methane concentration, VSD up to 91%, and CODr up to 99.5%. This shows that the modified inoculum has great potential as a growth medium to treat food waste using Anaerobic Digestion (AD) with the help of pH control, which corresponds with the optimum pH range for the methanogenesis stage.
UR - http://www.scopus.com/inward/record.url?scp=85096450650&partnerID=8YFLogxK
U2 - 10.1063/5.0003725
DO - 10.1063/5.0003725
M3 - Conference contribution
AN - SCOPUS:85096450650
T3 - AIP Conference Proceedings
BT - Recent Progress on
A2 - Yuliusman, Yuliusman
A2 - Dianita, Cindy
PB - American Institute of Physics Inc.
T2 - 16th International Conference on Quality in Research, QiR 2019 - 2019 International Symposium on Sustainable and Clean Energy, ISSCE 2019
Y2 - 22 July 2019 through 24 July 2019
ER -