Factors influencing volatile fatty acids production from food wastes via anaerobic digestion

被引：95

作者：

Lukitawesa ^{[1
]}

Patinvoh, Regina J. ^{[1
,2
]}

Millati, Ria ^{[3
]}

Sarvari-Horvath, Ilona ^{[1
]}

Taherzadeh, Mohammad J. ^{[1
]}

机构：

[1] Univ Boras, Swedish Ctr Resource Recovery, S-50190 Boras, Sweden

[2] Lagos State Univ, Fac Engn, Dept Chem & Polymer Engn, Lagos, Nigeria

[3] Univ Gadjah Mada, Dept Food & Agr Prod Technol, Yogyakarta, Indonesia

来源：

BIOENGINEERED | 2020年 / 11卷 / 01期

基金：

瑞典研究理事会;

关键词：

Inoculum to substrate ratio; pH control; the inhibitor for methanogens; O-2; inoculum acclimatization; VFA; anaerobic digestion; ACIDOGENIC FERMENTATION; ACTIVATED-SLUDGE; BUTYRIC-ACID; RICE STRAW; PH; OPTIMIZATION; HYDROGEN; METHANE; 2-BROMOETHANESULFONATE; METHANOGENESIS;

D O I：

10.1080/21655979.2019.1703544

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Volatile fatty acids (VFAs) are intermediate products in anaerobic digestion. The effect of substrate loading or inoculum to substrate ratio (ISR), the addition of methanogen inhibitor, O-2 presence, control the reactor's pH, and inoculum adaptation on the VFAs production from food waste through acidogenesis process was investigated in this study. Addition of 2-bromoethane sulfonic (BES) as methanogen inhibitor suppressed VFA consumption by methanogens at ISR 1:1. At higher substrate loading (ISR 1:3), methane production can be suppressed even without the addition of BES. However, at high substrate loading, controlling the pH during acidogenesis is important to achieve high VFAs yield. Acclimatization of inoculum is also one of the strategies to achieve high VFA yield. The highest VFAs yield obtained in this work was 0.8 g VFA/g VS (added) at ISR 1:3, controlled pH at 6, with the presence of initial O-2 (headspace unflushed).

引用

页码：39 / 52

页数：14

共 52 条

[1] Consolidated Bioprocessing for Butyric Acid Production from Rice Straw with Undefined Mixed Culture [J].