Enhanced volatile fatty acids (VFAs) production in a thermophilic fermenter with stepwise pH increase - Investigation on dissolved organic matter transformation and microbial community shift.

doi:10.1016/J.WATRES.2017.01.067

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Enhanced volatile fatty acids (VFAs) production in a thermophilic fermenter with stepwise pH increase - Investigation on dissolved organic matter transformation and microbial community shift.

Journal Article•DOI•

Enhanced volatile fatty acids (VFAs) production in a thermophilic fermenter with stepwise pH increase - Investigation on dissolved organic matter transformation and microbial community shift.

Yun Chen¹, Xie Jiang², Keke Xiao², Nan Shen², Raymond J. Zeng¹, Yan Zhou² - Show less +2 more•Institutions (2)

University of Science and Technology of China¹, Nanyang Technological University²

01 Apr 2017-Water Research (Water Res)-Vol. 112, pp 261-268

TL;DR: The microbial community analysis showed that the relative abundance of phyla Actinobacteria and Proteobacteria increased with the increased pH, which may lead to the maximum hydrolysis at pH 9.9.

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About: This article is published in Water Research.The article was published on 2017-04-01. It has received 225 citations till now. The article focuses on the topics: Population.

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Journal Article•DOI•

Bio-based volatile fatty acid production and recovery from waste streams: Current status and future challenges.

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Merve Atasoy¹, Isaac Owusu-Agyeman¹, Elzbieta Plaza¹, Zeynep Cetecioglu¹•Institutions (1)

Royal Institute of Technology¹

11 Jul 2018-Bioresource Technology

TL;DR: Effectes of operation conditions including pH, temperature, retention time, type of substrate and mixed microbial cultures on VFA production and composition, and strategies to enhance bio-based V FA production and recovery from waste streams are reviewed.

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299 citations

Journal Article•DOI•

Bioengineering of anaerobic digestion for volatile fatty acids, hydrogen or methane production: A critical review

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Steven Wainaina¹, Lukitawesa¹, Mukesh Kumar Awasthi¹, Mukesh Kumar Awasthi², Mohammad J. Taherzadeh¹ - Show less +1 more•Institutions (2)

University of Borås¹, Virginia Tech College of Natural Resources and Environment²

13 Oct 2019-Bioengineered bugs

TL;DR: The theory and means to produce and accumulate VFAs and hydrogen, inhibit their conversion to methane and to extract them as the final products are provided.

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Abstract: Anaerobic digestion (AD) is a well-established technology used for producing biogas or biomethane alongside the slurry used as biofertilizer. However, using a variety of wastes and residuals as sub ...

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298 citations

Journal Article•DOI•

Potential influences of exogenous pollutants occurred in waste activated sludge on anaerobic digestion: A review.

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Jingyang Luo¹, Qin Zhang¹, Jianan Zhao¹, Yang Wu¹, Lijuan Wu, Han Li¹, Min Tang¹, Sun Yaqing¹, Wen Guo¹, Qian Feng¹, Jiashun Cao¹, Dongbo Wang² - Show less +8 more•Institutions (2)

Hohai University¹, Hunan University²

05 Feb 2020-Journal of Hazardous Materials

TL;DR: The results indicate that exogenous pollutants exhibit dose-dependent influences on Was digestion, and poly-aluminum chloride and polyacrylamide show strong inhibition on WAS digestion, which are primarily attributed to their physical enmeshments of organic matters in WAS.

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191 citations

Journal Article•DOI•

Full-scale production of VFAs from sewage sludge by anaerobic alkaline fermentation to improve biological nutrients removal in domestic wastewater.

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He Liu¹, Peng Han¹, Hongbo Liu¹, Guang-Jie Zhou¹, Bo Fu¹, Zhiyong Zheng¹ - Show less +2 more•Institutions (1)

Jiangnan University¹

01 Jul 2018-Bioresource Technology

TL;DR: Long-term operation indicated that anaerobic alkaline fermentation for VFAs production is technically and economically feasible for sludge carbon recovery.

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173 citations

Cites background from "Enhanced volatile fatty acids (VFAs..."

...At present, commercial production of VFAs is mostly accomplished by chemical routes (Chen et al., 2017)....
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Journal Article•DOI•

Selective VFA production potential from organic waste streams: Assessing temperature and pH influence.

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Jon Garcia-Aguirre¹, Enrique Aymerich¹, Jaime Goni¹, Myriam Esteban-Gutiérrez¹•Institutions (1)

University of Navarra¹

01 Nov 2017-Bioresource Technology

TL;DR: The results of this study suggest that selective VFA production, i.e. via propionic, butyric and acetic acid production, might be feasible for scaling-up purposes with specific waste streams by adjusting the process parameters.

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142 citations

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References

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Open Access

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Book•

Standard methods for the examination of water and wastewater

[...]

A.E. Greenberg, Lenore S. Clesceri, Andrew D. Eaton

01 Jan 1992

TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.

...read moreread less

Abstract: Set your standards with these standard methods. This is it: the most widely read publication in the water industry, your all-inclusive reference tool. This comprehensive reference covers all aspects of USEPA-approved water analysis methods. More than 400 methods - all detailed step-by-step; 8 vibrant, full-color pages of aquatic algae illustrations; Never-before-seen figures that will help users with toxicity testing and the identification of apparatus used in the methods; Over 300 superbly illustrated figures; A new analytical tool for a number of inorganic nonmetals; Improved coverage of data evaluation, sample preservation, and reagant water; And much more!

...read moreread less

78,324 citations

Journal Article•DOI•

Characterisation of aquatic humic and non-humic matter with size-exclusion chromatography--organic carbon detection--organic nitrogen detection (LC-OCD-OND).

[...]

Stefan A. Huber, Andreas Balz, Michael Abert, Wouter Pronk¹•Institutions (1)

Swiss Federal Institute of Aquatic Science and Technology¹

01 Jan 2011-Water Research

TL;DR: Size-exclusion chromatography in combination with organic carbon detection (SEC-OCD) is an established method to separate the pool of NOM into major fractions of different sizes and chemical functions and to quantify these on the basis of organic carbon.

...read moreread less

1,161 citations

"Enhanced volatile fatty acids (VFAs..." refers methods in this paper

...163 2.3 SEC-organic carbon detection organic nitrogen detection analysis 164 LC-OCD-OND system (DOC-LABOR, Karlsruhe, Germany) was used to 165 characterize the DOM....
[...]
...The concentration of these DOMs was quantified by a software program 169 M AN US CR IP T AC CE PT ED 9 (ChromCALC, DOC-LABOR, Karlsruhe, Germany) (Huber et al. 2011) and the unit 170 of these DOMs concentration is mg equivalent carbon per liter (mg-C/L)....
[...]

Journal Article•DOI•

Pretreatment methods to improve sludge anaerobic degradability: a review.

[...]

Hélène Carrère¹, Claire Dumas¹, Audrey Battimelli¹, Damien J. Batstone², J.P. Delgenes¹, Jean-Philippe Steyer¹, Ivet Ferrer¹, Ivet Ferrer³ - Show less +4 more•Institutions (3)

Institut national de la recherche agronomique¹, University of Queensland², Polytechnic University of Catalonia³

15 Nov 2010-Journal of Hazardous Materials

TL;DR: This paper presents a review of the main sludge treatment techniques used as a pretreatment to anaerobic digestion, and it is likely that low impact pretreatment methods such as mechanical and thermal phased improve speed of degradation, while high impact methods improve both speed and extent of degradation.

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1,058 citations

"Enhanced volatile fatty acids (VFAs..." refers background in this paper

...Large amount of waste sludge (primary and wasted activated sludge) is 41 generated all over the world from wastewater treatment plants (WWTPs) and direct 42 discharge of sludge raises serious environmental concerns (Carrere et al. 2010)....
[...]

Journal Article•DOI•

Methanosarcina: the rediscovered methanogen for heavy duty biomethanation.

[...]

Jo De Vrieze¹, Tom Hennebel¹, Nico Boon¹, Willy Verstraete¹•Institutions (1)

Ghent University¹

01 May 2012-Bioresource Technology

TL;DR: The possibilities of Methanosarcina sp.

...read moreread less

624 citations

"Enhanced volatile fatty acids (VFAs..." refers background in this paper

...It is well known that the pH range for the growth of Methanosarcina is 5-8 355 (De Vrieze et al. 2012) and high temperature may inhibit Methanosaeta....
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Journal Article•DOI•

Improved Bioproduction of Short-Chain Fatty Acids (SCFAs) from Excess Sludge under Alkaline Conditions

[...]

Hongying Yuan¹, Yinguang Chen¹, Hua-xing Zhang¹, Su Jiang¹, Qi Zhou¹, Guowei Gu¹ - Show less +2 more•Institutions (1)

Tongji University¹

11 Feb 2006-Environmental Science & Technology

TL;DR: Investigation revealed that the formation of SCFA at pH 10.0 was dominated by biological effects rather than by chemical hydrolysis, so the SCFAs production from excess sludge could be significantly improved and maintained stable by controlling the fermentation pH at 10.

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Abstract: The production of short-chain fatty acids (SCFAs) from excess sludge was conducted in batch fermentation tests at different pH values ranging from 4.0 to 11.0. Experimental results of the impacts of different pHs on SCFAs production showed that during the first 8-day fermentation time the total SCFAs production at either pH 9.0 or pH 10.0 was much greater than that at acidic or neutral pH, and the maximal yield of 256.2 mg SCFAs−COD per gram of volatile suspended solids (VSS) was at pH 10.0, which was, respectively, over 3 and 4 times that at pH 5.0 and uncontrolled pH. Clearly, SCFAs production from excess sludge could be significantly improved and maintained stable by controlling the fermentation pH at 10.0. The composition of SCFAs and the percent distribution of individual SCFAs accounting for total SCFAs at pH 10.0 were analyzed. The SCFAs consisted of acetic, propionic, iso-butyric, n-butyric, iso-valeric, and n-valeric acids, and acetic acid was the most prevalent product with a fraction of 40−55%....

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501 citations

"Enhanced volatile fatty acids (VFAs..." refers background in this paper

...54 Alkaline pH was recommended to enhance VFAs production from waste 55 activated sludge anaerobic fermentation as more soluble COD (sCOD) can be 56 generated and methanogens are inhibited under high pH conditions (Wu et al. 2010, 57 Yu et al. 2008, Yuan et al. 2006, Zhao et al. 2015)....
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...Apparently, the 270 concentration of carbohydrate was always lower than protein, which confirmed that 271 protein was the major substrate for acidogenesis (Feng et al. 2014, Liu et al. 2012a, 272 Yuan et al. 2006)....
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