The effect of acetate additives on inoculum on Vs, CoD and microbial communities on food waste anaerobic digestion

Maulida Fitri, Cindy Rianti Priadi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationRecent Progress on
Subtitle of host publicationEnergy, Communities and Cities - Proceedings of International Symposium on Sustainable and Clean Energy, ISSCE 2019: Quality in Research 2019
EditorsYuliusman Yuliusman, Cindy Dianita
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419896
DOIs
Publication statusPublished - 4 May 2020
Event16th International Conference on Quality in Research, QiR 2019 - 2019 International Symposium on Sustainable and Clean Energy, ISSCE 2019 - Padang, Indonesia
Duration: 22 Jul 201924 Jul 2019

Publication series

NameAIP Conference Proceedings
Volume2230
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference16th International Conference on Quality in Research, QiR 2019 - 2019 International Symposium on Sustainable and Clean Energy, ISSCE 2019
CountryIndonesia
CityPadang
Period22/07/1924/07/19

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