Valorization of volatile fatty acids derived from low-cost organic waste for lipogenesis in oleaginous microorganisms-A review

In recent years, interest in the biorefinery concept has emerged in the utilization of volatile fatty acids (VFAs) produced by acidogenic fermentation as precursors for various biotechnological processes. This has attracted substantial attention to VFA production from low-cost substrates such as organic waste and membrane based VFA recovery techniques to achieve cost-effective and environmentally friendly processes. However, there are few reviews which emphasize the acidogenic fermentation of organic waste into VFAs, and VFA recovery. Therefore, this article comprehensively summarizes VFA production, the factors affecting VFA production, and VFA recovery strategies using membrane-based techniques. Additionally, the outlook for future research on VFA production is discussed.

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The use of organic waste-derived volatile fatty acids as raw materials of C4-C5 bioalcohols

Journal of Cleaner Production ◽

10.1016/j.jclepro.2018.08.061 ◽

2018 ◽

Vol 201 ◽

pp. 14-21 ◽

Cited By ~ 13

Author(s):

Seong-Heon Cho ◽

Taejin Kim ◽

Kitae Baek ◽

Jechan Lee ◽

Eilhann E. Kwon

Keyword(s):

Fatty Acids ◽

Organic Waste ◽

Volatile Fatty Acids ◽

Raw Materials

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VOLATILE FATTY ACIDS FROM ORGANIC WASTES AS NOVEL LOW-COST CARBON SOURCE FOR Yarrowia lipolytica

New Biotechnology ◽

10.1016/j.nbt.2020.01.002 ◽

2020 ◽

Vol 56 ◽

pp. 123-129 ◽

Cited By ~ 2

Author(s):

Mercedes Llamas ◽

Elia Tomás-Pejó ◽

Cristina González-Fernández

Keyword(s):

Fatty Acids ◽

Carbon Source ◽

Yarrowia Lipolytica ◽

Volatile Fatty Acids ◽

Low Cost ◽

Organic Wastes

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The Potentiality of Municipal Solid Waste to Produce Volatile Fatty Acids (VFAs)

Journal of Scientific Research ◽

10.3329/jsr.v11i1.38457 ◽

2019 ◽

Vol 11 (1) ◽

pp. 133-143

Author(s):

M. S. A. Amin ◽

M. M. Alam ◽

M. S. I. Mozumder

Keyword(s):

Fatty Acids ◽

Anaerobic Digestion ◽

Organic Waste ◽

Volatile Fatty Acids ◽

Batch Reactor ◽

Ammonium Nitrogen ◽

Economic Feasibility ◽

Efficient Production ◽

Inhibition Effect ◽

Potato Waste

Volatile fatty acids (VFAs) are proposed platform molecules for the production of basic chemicals and polymers from organic waste streams. A simple bio-reactor was fabricated with locally available materials to conduct this study. A lab-scale anaerobic batch reactor was fed with potato waste and banana waste as substrate to find out the potential organic waste that has maximum VFAs production capacity. Between these two wastes, banana waste was found better for VFAs production. The product spectrum remained similar at the pH range 4.0-4.5 but higher pH reduced the VFAs production. The operation of anaerobic digestion with uncontrolled pH reduced the pH 4.0 to 4.5. Therefore, it is better to run the anaerobic digestion without controlling the pH while aiming to VFAs production. A small amount nutrient (ammonium nitrogen) significantly increases the VFAs production but higher amount nutrient has an inhibition effect. However commercial surfactant has a strong inhibition effect on VFAs producing organism and hence reduced the VFAs production. The efficient production of VFA at uncontrolled pH with a small amount of ammonium nitrogen increases the economic feasibility of organic waste-based VFAs production.

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Development of headspace–gas chromatography–flame ionization detection procedure to determine volatile fatty acids in zoo organic waste leachates

Water Science & Technology ◽

10.2166/wst.2011.516 ◽

2011 ◽

Vol 63 (12) ◽

pp. 2873-2877 ◽

Cited By ~ 2

Author(s):

Anna Banel ◽

Marta Wasielewska ◽

Monika Felchner-Żwirełło ◽

Bogdan Zygmunt

Keyword(s):

Fatty Acids ◽

Gas Chromatography ◽

Organic Waste ◽

Volatile Fatty Acids ◽

Sample Introduction ◽

Flame Ionization Detection ◽

Monocarboxylic Acids ◽

Ionization Detection ◽

Flame Ionization ◽

Headspace Gas

In order to determine volatile fatty acids (short chain monocarboxylic acids with 2 to 6 carbon atoms in a molecule) in leachates formed in organic waste piles a procedure based on static headspace (HS) coupled with gas chromatography (GC) have been proposed and optimized. The conditions of HS extraction and sample introduction into a gas chromatograph as well as of chromatographic separation were considered. Using flame ionization detection LODs were of the order of 0.02– 0.37 mg/L. The analyzed leachate collecting on and close to a zoo organic waste pile contained VFAs (Volatile Fatty Acids) at a concentration ranging from 5.5 mg/L to 0.88 g/L and from below LOD to 10.1 mg/L for pool water at some distance from the pile, respectively.

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