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1. Bioreduction of selenate in an anaerobic biotrickling filter using methanol as electron donor

Author:
Eregowda, Tejaswini; Rene, Eldon R.; Lens, Piet N.L.
Source:
Chemosphere 2019 v.225 pp. 406-413
ISSN:
0045-6535
Subject:
volatile fatty acids,   etc   ; acetates; biofilters; gases; liquids; methanol; selenates;     Show all 7 Subjects
Abstract:
... The anaerobic bioreduction of selenate, fed in step (up to 60 mg.L−1) or continuous (∼7 mg.L−1) trickling mode, in the presence of gas-phase methanol (4.3–50 g m−3.h−1) was evaluated in a biotrickling filter (BTF). During the 48 d of step-feed and 41 d of continuous-feed operations, average selenate removal efficiencies (RE) > 90% and ∼68% was achieved, corresponding to a selenate reduction rate o ...
DOI:
10.1016/j.chemosphere.2019.02.158

2. A review on the conversion of volatile fatty acids to polyhydroxyalkanoates using dark fermentative effluents from hydrogen production

Author:
Kumar, Gopalakrishnan; Ponnusamy, Vinoth Kumar; Bhosale, Rahul R.; Shobana, Sutha; Yoon, Jeong-Jun; Bhatia, Shashi Kant; Rajesh Banu, J.; Kim, Sang-Hyoun
Source:
Bioresource technology 2019 v.287 pp. 121427
ISSN:
0960-8524
Subject:
volatile fatty acids,   etc   ; biochemical pathways; biodegradability; carbon; composite polymers; effluents; energy; feedstocks; hydrogen production; plastics; polyhydroxyalkanoates;     Show all 11 Subjects
Abstract:
... The production of bio/microbial-based polymers, polyhydroxyalkanoates (PHAs) from volatile fatty acids (VFAs) of dark fermentative effluents in the bio-H2 reactor is being paid attention, owing to their commercial demand, applications and as carbon as well as energy storage source. Since, they are the cheap precursors for such valuable renewable biopolymers which all possess the properties; those ...
DOI:
10.1016/j.biortech.2019.121427

3. Characterization of the refractory dissolved organic matters (rDOM) in sludge alkaline fermentation liquid driven denitrification: Effect of HRT on their fate and transformation

Author:
Cao, Shenbin; Sun, Faqian; Lu, Dan; Zhou, Yan
Source:
Water research 2019 v.159 pp. 135-144
ISSN:
0043-1354
Subject:
volatile fatty acids,   etc   ; byproducts; colloids; denitrification; dissolved organic carbon; hydrophobicity; molecular weight; nitrogen; polysaccharides; sludge;     Show all 10 Subjects
Abstract:
... Enhanced biological denitrification for nitrogen removal using sludge alkaline fermentation liquid (SAFL) as an alternative carbon source has been widely reported in previous studies, while limited studies focused on the degradation of the organics presented in SAFL. In this study, an SAFL driven anoxic denitrification sequencing batch reactor (SBR) was established, the mechanism of organics utili ...
DOI:
10.1016/j.watres.2019.04.063

4. Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) production from engineered Ralstonia eutropha using synthetic and anaerobically digested food waste derived volatile fatty acids

Author:
Bhatia, Shashi Kant; Gurav, Ranjit; Choi, Tae-Rim; Jung, Hye-Rim; Yang, Soo-Yeon; Song, Hun-Suk; Jeon, Jong-Min; Kim, Jae-Seok; Lee, Yoo-Kyung; Yang, Yung-Hun
Source:
International journal of biological macromolecules 2019 v.133 pp. 1-10
ISSN:
0141-8130
Subject:
volatile fatty acids,   etc   ; Cupriavidus necator; acetates; butyrates; composite polymers; food waste; lactic acid; nitrogen; polyhydroxyalkanoates;     Show all 9 Subjects
Abstract:
... Ralstonia eutropha Re2133/pCB81 is able to utilize various volatile fatty acids (VFAs) (acetate, butyrate, lactate, and propionate) for polyhydroxyalkanoates (PHAs) production. Acetate and lactate resulted in poly(3-hydroxybutyrate) P(3HB) production, butyrate in poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) P(3HB-co-3HHx), and propionate in poly(3-hydroxybutyrate-co-3-hydroxyvalerate) P(3-HB-co-3 ...
DOI:
10.1016/j.ijbiomac.2019.04.083

5. Sequencing batch dry anaerobic digestion of mixed feedstock regulating strategies for methane production: Multi-factor interactions among biotic and abiotic characteristics

Author:
Yu, Jiadong; Zhao, Lixin; Feng, Jing; Yao, Zonglu; Huang, Kaiming; Luo, Juan; Wei, Shimeng; Chen, Jiankun
Source:
Bioresource technology 2019 v.284 pp. 276-285
ISSN:
0960-8524
Subject:
volatile fatty acids,   etc   ; anaerobic digestion; corn stover; cow manure; feedstocks; inoculum; methane production; methanogens; synergism;     Show all 9 Subjects
Abstract:
... This study investigated the synergistic effects and regulation strategy of multiple factors for improving methane production in sequencing batch dry anaerobic digestion (SBD-AD) using corn stalks (CS) and cow dung (CD). The regulation of the spray frequency (SF) and inoculum content (IC) significantly improved methane yield, which increased feedstock ratios (FRs) by 12.4–121.3%. Moreover, the rela ...
DOI:
10.1016/j.biortech.2019.03.141

6. Storing of exoelectrogenic anolyte for efficient microbial fuel cell recovery

Author:
Haavisto, Johanna M.; Lakaniemi, Aino-Maija; Puhakka, Jaakko A.
Source:
Environmental technology 2019 v.40 no.11 pp. 1467-1475
ISSN:
1479-487X
Subject:
volatile fatty acids,   etc   ; energy; enrichment culture; freezing; microbial fuel cells; power generation; staining; storage temperature; xylose;     Show all 9 Subjects
Abstract:
... Starting up a microbial fuel cell (MFC) requires often a long-term culture enrichment period, which is a challenge after process upsets. The purpose of this study was to develop low-cost storage for MFC enrichment culture to enable prompt process recovery after upsets. Anolyte of an operating xylose-fed MFC was stored at different temperatures and for different time periods. Storing the anolyte fo ...
DOI:
10.1080/09593330.2017.1423395

7. Carbon balance of major volatile fatty acids (VFAs) in recycling algal residue via a VFA-platform for reproduction of algal biomass

Author:
Kim, Donghyun; Kim, Sungwhan; Han, Jong-In; Yang, Ji-Won; Chang, Yong Keun; Ryu, Byung-Gon
Source:
Journal of environmental management 2019 v.237 pp. 228-234
ISSN:
0301-4797
Subject:
volatile fatty acids,   etc   ; acetates; biomass; biotransformation; butyrates; carbon; fermentation; microalgae; propionic acid; reproduction; unit process;     Show all 11 Subjects
Abstract:
... The feasibility of a carbon recycling system that transforms algal residue to volatile fatty acids (VFAs) for re-cultivating microalgae was evaluated based on a carbon balance analysis of major VFAs consisting of acetate (HAc), propionate (HPr), and butyrate (HBu). This system largely involves two processes: (i) bioconversion of algal residue to VFAs by anaerobic fermentation, and (ii) cultivation ...
DOI:
10.1016/j.jenvman.2019.02.040

8. Dispersion aided tenside disintegration of seagrass Syringodium isoetifolium: Towards biomethanation, kinetics, energy exploration and evaluation

Author:
Rajesh Banu, J.; Tamilarasan, K.; Uma Rani, R.; Gunasekaran, M.; Cho, Si-Kyung; Al-Muhtaseb, Ala'a H.; Gopalakrishnan Kumar,
Source:
Bioresource technology 2019 v.277 pp. 62-67
ISSN:
0960-8524
Subject:
volatile fatty acids,   etc   ; biogas; biomass; chemical oxygen demand; energy; fatty acid composition; methane production; polysorbates; seagrasses;     Show all 9 Subjects
Abstract:
... In this study, an attempt was made to enhance the biomethanation potential of seagrass (Syringodium isoetifolium) by the aid of disperser-tenside (polysorbate 80) disintegration for the first time in literature. A disperser rpm of 10,000 for 20 min and PS 80 dose of 0.000864 g/g TS were selected as ideal parameters for effectual seagrass biomass disintegration. Dispersion aided tenside disintegrat ...
DOI:
10.1016/j.biortech.2019.01.026

9. Glutamate as sole carbon source for enhanced biological phosphorus removal

Author:
Rey-Martínez, Natalia; Badia-Fabregat, Marina; Guisasola, Albert; Baeza, Juan Antonio
Source:
The Science of the total environment 2019 v.657 pp. 1398-1408
ISSN:
0048-9697
Subject:
volatile fatty acids,   etc   ; Comamonadaceae; Thiothrix; bacterial communities; carbon; carbon sequestration; denitrification; glycogen; nitrogen; phosphorus; sludge; wastewater;     Show all 12 Subjects
Abstract:
... Enhanced Biological Phosphorus Removal (EBPR) is based on the enrichment of sludge in polyphosphate accumulating organisms (PAO). Candidatus Accumulibacter is the bacterial community member most commonly identified as PAO in EBPR systems when volatile fatty acids (VFA) are the carbon source. However, it is necessary to understand the role of non-Accumulibacter PAO in the case of wastewater with lo ...
DOI:
10.1016/j.scitotenv.2018.12.064

10. A viable approach for commercial VFAs production from sludge: Liquid fermentation in anaerobic dynamic membrane reactor

Author:
Liu, Hongbo; Wang, Ling; Zhang, Xuedong; Fu, Bo; Liu, He; Li, Yajie; Lu, Xiaoyou
Source:
Journal of hazardous materials 2019 v.365 pp. 912-920
ISSN:
0304-3894
Subject:
volatile fatty acids,   etc   ; bioavailability; cleaning; economic analysis; energy; fermenters; liquid state fermentation; liquids; sewage sludge;     Show all 9 Subjects
Abstract:
... A novel strategy of liquid fermentation using anaerobic dynamic membrane reactor (AnDMBR) was proposed to enhance volatile fatty acids (VFAs) production from sewage sludge. Results indicated that liquid sludge fermentation in AnDMBR had the potential in commercial VFAs production. VFAs productivity and concentration as well as substrate conversion rate could reach as high as 7.8 kg VFA−COD/m3 d, 6 ...
DOI:
10.1016/j.jhazmat.2018.11.082

11. Addition of biochar and trace elements in the form of industrial FeCl3 to stabilize anaerobic digestion of food waste: dosage optimization and long‐term study

Author:
Capson‐Tojo, Gabriel; Girard, Chloé; Rouez, Maxime; Crest, Marion; Steyer, Jean‐Philippe; Bernet, Nicolas; Delgenès, Jean‐Philippe; Escudié, Renaud
Source:
Journal of chemical technology and biotechnology 2019 v.94 no.2 pp. 505-515
ISSN:
0268-2575
Subject:
volatile fatty acids,   etc   ; acetates; anaerobic digestion; biochar; ferric chloride; food waste; iron; methane production; propionic acid;     Show all 9 Subjects
Abstract:
... BACKGROUND: Although anaerobic digestion is a promising alternative for the valorization of complex substrates such as food waste, this process is yet to be optimized and options for its stabilization must be developed. This study assessed for the first time if the combined addition of biochar and trace elements in the form of an industrial FeCl₃ solution could serve as a method for stabilizing fo ...
DOI:
10.1002/jctb.5797

12. Benefit of solid-liquid separation on volatile fatty acid production from grass clipping with ultrasound-calcium hydroxide pretreatment

Author:
Wang, Siqi; Tao, Xue; Zhang, Guangming; Zhang, Panyue; Wang, Hongjie; Ye, Junpei; Li, Fan; Zhang, Qian; Nabi, Mohammad
Source:
Bioresource technology 2019 v.274 pp. 97-104
ISSN:
0960-8524
Subject:
volatile fatty acids,   etc   ; Halocella; alkali treatment; biomass; fermentation; grasses; kinetics; lignocellulose; liquids; propionic acid;     Show all 10 Subjects
Abstract:
... Ultrasound-calcium hydroxide (US-Ca(OH)2) pretreatment effectively enhanced volatile fatty acid (VFA) production from lignocellulosic biomass. In this paper, solid and liquid fraction of pretreated grass clipping was for the first time separately fermented in order to improve organic recovery from liquid fraction and reduce inhibition due to alkaline pretreatment. The total VFA yield and VS remova ...
DOI:
10.1016/j.biortech.2018.11.072

13. Food waste-derived volatile fatty acids platform using an immersed membrane bioreactor

Author:
Wainaina, Steven; Parchami, Mohsen; Mahboubi, Amir; Horváth, Ilona Sárvári; Taherzadeh, Mohammad J.
Source:
Bioresource technology 2019 v.274 pp. 329-334
ISSN:
0960-8524
Subject:
volatile fatty acids,   etc   ; anaerobic digestion; biogas; cleaning; fermentation; food waste; membrane bioreactors; pH;     Show all 8 Subjects
Abstract:
... Volatile fatty acids (VFAs) are the key intermediates from anaerobic digestion (AD) process that can be a platform to synthesize products of higher value than biogas. However, some obstacles still exist that prevent large-scale production and application of VFAs, key among them being the difficulty in recovering the acids from the fermentation medium and low product yields. In this study, a novel ...
DOI:
10.1016/j.biortech.2018.11.104

14. Long-term evaluation of methane production in a bio-electrochemical anaerobic digestion reactor according to the organic loading rate

Author:
Park, Jun-Gyu; Lee, Beom; Park, Hye-Rin; Jun, Hang-Bae
Source:
Bioresource technology 2019 v.273 pp. 478-486
ISSN:
0960-8524
Subject:
volatile fatty acids,   etc   ; anaerobic digestion; biofilm; hydrogen; methane; methane production; microbial communities; organic matter; pH; protons;     Show all 10 Subjects
Abstract:
... In this study, the effects of differing organic loading rates (OLRs) on methane production were evaluated via long-term operation of a bio-electrochemical anaerobic digestion (BEAD) reactor and an anaerobic digestion (AD) reactor. In the AD reactor, the maximum OLR was 4 kg/m3·d whereas the electro-active microbial community in bulk and on the biofilm of the BEAD reactor produced methane even at 1 ...
DOI:
10.1016/j.biortech.2018.11.021

15. Characteristics of acidogenic fermentation for volatile fatty acid production from food waste at high concentrations of NaCl

Author:
He, Xiaozheng; Yin, Jun; Liu, Jiaze; Chen, Ting; Shen, Dongsheng
Source:
Bioresource technology 2019 v.271 pp. 244-250
ISSN:
0960-8524
Subject:
volatile fatty acids,   etc   ; butyric acid; fermentation; food waste; lactic acid; microbial communities; propionic acid; sodium chloride;     Show all 8 Subjects
Abstract:
... This study explored the effects of NaCl on volatile fatty acid (VFA) production from food waste by acidogenic fermentation. The production and composition of VFAs, and the microbial community in acidogenic fermentation were investigated at four different NaCl concentrations: 10, 30, 50, and 70 g/L, and at 0 g/L (control). The highest VFA production was 0.542 g/g dry weight of food waste at 10 g/L ...
DOI:
10.1016/j.biortech.2018.09.116

16. Optimization of hydraulic retention time and organic loading rate for volatile fatty acid production from low strength wastewater in an anaerobic membrane bioreactor

Author:
Khan, Mohd Atiqueuzzaman; Ngo, Huu Hao; Guo, Wenshan; Liu, Yiwen; Nghiem, Long Duc; Chang, Soon Woong; Nguyen, Dinh Duc; Zhang, Shicheng; Luo, Gang; Jia, Hui
Source:
Bioresource technology 2019 v.271 pp. 100-108
ISSN:
0960-8524
Subject:
volatile fatty acids,   etc   ; carbon; fermentation; glucose; isobutyric acid; membrane bioreactors; methanogens; pH; propionic acid; wastewater;     Show all 10 Subjects
Abstract:
... This study aims to investigate the production of volatile fatty acids (VFAs) from low strength wastewater at various hydraulic retention time (HRT) and organic loading rate (OLR) in a continuous anaerobic membrane bioreactor (AnMBR) using glucose as carbon source. This experiment was performed without any selective inhibition of methanogens and the reactor pH was maintained at 7.0 ± 0.1. 48, 24, 1 ...
DOI:
10.1016/j.biortech.2018.09.075

17. Anaerobic digestion of wheat straw and rape oil cake in a two-stage solid-state system

Author:
Pohl, Marcel; Sánchez-Sánchez, Maria; Mumme, Jan
Source:
Renewable energy 2019 v.141 pp. 359-367
ISSN:
0960-1481
Subject:
volatile fatty acids,   etc   ; ammonium; anaerobic digestion; carbon nitrogen ratio; methane production; rapeseed oil; renewable energy sources; streams; temperature; wheat straw;     Show all 10 Subjects
Abstract:
... In this study, the anaerobic co-digestion of two abundantly available agricultural waste streams, rape oil cake and wheat straw, was investigated using the upflow anaerobic solid-state (UASS) process. The experiment was carried out in two identically constructed UASS systems operated for 154 days at 37 °C and 55 °C, respectively, and at organic loading rates (OLR) of 2.5, 3.5 and 4.5 gVS L−1 d−1. ...
DOI:
10.1016/j.renene.2019.04.021

18. Maximizing energy recovery from homeostasis in microbial fuel cell by synergistic conversion of short-chain volatile fatty acid

Author:
Yang, Guang; Wang, Jie; Zhang, Hongwei; Jia, Hui; Zhang, Yang; Cui, Zhao; Gao, Fei
Source:
Bioresource technology reports 2019 v.7 pp. 100200
ISSN:
2589-014X
Subject:
volatile fatty acids,   etc   ; biotransformation; butyric acid; electricity; electron transfer; energy recovery; homeostasis; microbial fuel cells; propionic acid; redox potential;     Show all 10 Subjects
Abstract:
... In this study, the effect of homeostasis in microbial fuel cell (MFC) on electron transfer and energy recovery from volatile fatty acid (VFA) was investigated. In propionic acid MFC (HPr-MFC), the power density and electricity were enhanced. This was mainly due to the lowest oxidation-reduction potential obtained by the regulation of redox electronic status to accumulate the propionic acid convert ...
DOI:
10.1016/j.biteb.2019.100200

19. A compilation and bioenergetic evaluation of syntrophic microbial growth yields in anaerobic digestion

Author:
Patón, Mauricio; Rodríguez, Jorge
Source:
Water research 2019 v.159 pp. 176-183
ISSN:
0043-1354
Subject:
volatile fatty acids,   etc   ; adenosine triphosphate; anaerobic digestion; electron transfer; energy; hydrogen; lactic acid; methanogens; microbial biomass; microbial growth; simulation models;     Show all 11 Subjects
Abstract:
... A compilation and analysis of experimentally determined microbial growth yields for syntrophic volatile fatty acid (VFA), lactate oxidisers and methanogens in anaerobic digestion (AD) systems is presented. Only studies based on experimental determinations or sound model-to-data fitting that specifically address parameter identifiability, have been considered. The experimentally determined values a ...
DOI:
10.1016/j.watres.2019.05.013

20. Zinc: A promising material for electrocatalyst-assisted microbial electrosynthesis of carboxylic acids from carbon dioxide

Author:
Jiang, Yong; Chu, Na; Zhang, Wei; Ma, Junjun; Zhang, Fang; Liang, Peng; Zeng, Raymond Jianxiong
Source:
Water research 2019 v.159 pp. 87-94
ISSN:
0043-1354
Subject:
volatile fatty acids,   etc   ; acetic acid; carbon dioxide; cathodes; copper; electrochemistry; electrosynthesis; ethanol; hydrogen; renewable energy sources; wastewater treatment; zinc;     Show all 12 Subjects
Abstract:
... Microbial electrosynthesis (MES) has been proposed as a sustainable platform to simultaneously achieve wastewater treatment, renewable energy generation and chemicals production. Currently, the CO2 valorization via MES is restricted by the low production rate, while that via electrochemical reduction is limited by the production of C1 products with high efficiency and selectivity. The electrocatal ...
DOI:
10.1016/j.watres.2019.04.053