Volatile fatty acids production from food waste: Effects of pH, temperature, and organic loading rate

Jiang, Jianguo; Zhang, Yujing; Li, Kaimin; Wang, Quan; Gong, Changxiu; Li, Menglu

doi:10.1016/j.biortech.2013.06.025

Cited by 519 publications

(261 citation statements)

References 26 publications

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“…Researches have been done to try to enhance methane gas production during co-digestion of food waste by combining it with other organic matter (Fang et al 2011;Jiang et al 2013;Kabouris et al 2009;Kabouris 2008;L. Martín-Gonzáleza 2010;Long et al 2012).…”

Section: Stability Of the Anaerobic Digestionmentioning

confidence: 99%

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Modifying the ADM1 Model to Predict the Operation of an Anaerobic Digester Co-digesting Municipal Sludge with Bakery Waste

Demitry¹,

Zhong²,

Hansen³

et al. 2015

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Anaerobic Digestion Model Number1 (ADM1) was modified in order to predict accurately the impact of co-digesting bakery waste (BW) with municipal sludge (MS). BW is an industrial waste (300,000 gallons per day in USA) that contains a high concentration of organic matter (carbohydrates, low lipids and non-detected proteins). BW is an easily biodegradable substrate for creating a favorable microorganism growth environment, which enhances the biogas production needed for wastewater facilities. The modified ADM1 successfully predicted changes in pH, volatile fatty acids (VFA), propionic acid and methane gas production. The ADM1 outputs were compared to experimental batch reactor results of actual BW addition percentages in order to validate the model. Stability of the digestion process was achieved until the ratio range of 37-40% BW: 60-63% MS, and the digestion processes were inhibited at higher ratios of BW. This research provides an alternative to BW management through utilizing the BW to enhance methane production.

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Section: Stability Of the Anaerobic Digestionmentioning

confidence: 99%

“…These parameters can be used to evaluate the efficiency of a co-digestion process for enhancing biogas from a wastewater treatment facilities' digester. (Bitton 2011;Burton 2004;Demirel 2002;Henze 2008;Jiang et al 2013;McCarty 1973;Turovskiĭ and Mathai 2006).…”

Section: Stability Of the Anaerobic Digestionmentioning

confidence: 99%

Modifying the ADM1 Model to Predict the Operation of an Anaerobic Digester Co-digesting Municipal Sludge with Bakery Waste

Demitry¹,

Zhong²,

Hansen³

et al. 2015

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show abstract

“…Household and municipal food waste is a tough issue worldwide, especially in the rapidly growing cities and super-cities [12,13]. An important mitigation option is the diversion of reusable materials through sorting out food waste.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Heavy Metals by Adsorbents from Food Waste Residue

FAN¹,

ZHANG²

2015

JRST

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Food waste residue is an intractable problem worldwide. The current study discussed the potential of adsorbents prepared from food waste residue (AFWR) for heavy metal removal from wastewater. The microstructure of AFWR was characterized, and kinetic studies on the simultaneous adsorption of Pb 2+ , Cu 2+ , Zn 2+ and Cd 2+ ions from aqueous solutions by AFWR were carried out. It was found that the adsorption of all heavy metals followed a pseudo-second-order kinetics, so that there was a competitive adsorption for Pb 2+ , Cu 2+ , Zn 2+ and Cd 2+ . According to the experimental results, the adsorption in competition beads with the heavy metals presented an order of Cu 2+ > Pb 2+ > Zn 2+ > Cd 2+ .

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“…Additionally, as the key intermediate in this process, acetic acid can also be generated renewably from other sources, expanding the range of feedstocks that can drive bio-GTL operation. Examples include conversion of lignocellulosic biomass and municipal solid waste (MSW) into acetic acid through pyrolysis (8) and anaerobic fermentation (9), respectively, both of which contribute no net carbon into the ecosystem. In a second step, the acetate generated from these various sources can be further upgraded biologically into a variety of liquid fuels and value-added chemicals.…”

mentioning

confidence: 99%

“…One of the most challenging objectives in the present scheme is the efficient utilization of low-strength acetic acid obtained from acetogenesis and biomass/MSW degradation, which is typically below 2∼3% (20∼30 g/L) (9,14). Substrates with low concentrations are difficult to process biologically because large feed volumes are required.…”

mentioning

confidence: 99%

Application of metabolic controls for the maximization of lipid production in semicontinuous fermentation

Liu

Qiao

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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Acetic acid can be generated through syngas fermentation, lignocellulosic biomass degradation, and organic waste anaerobic digestion. Microbial conversion of acetate into triacylglycerols for biofuel production has many advantages, including low-cost or even negative-cost feedstock and environmental benefits. The main issue stems from the dilute nature of acetate produced in such systems, which is costly to be processed on an industrial scale. To tackle this problem, we established an efficient bioprocess for converting dilute acetate into lipids, using the oleaginous yeast Yarrowia lipolytica in a semicontinuous system. The implemented design used low-strength acetic acid in both salt and acid forms as carbon substrate and a cross-filtration module for cell recycling. Feed controls for acetic acid and nitrogen based on metabolic models and online measurement of the respiratory quotient were used. The optimized process was able to sustain high-density cell culture using acetic acid of only 3% and achieved a lipid titer, yield, and productivity of 115 g/L, 0.16 g/g, and 0.8 g·L −1 ·h −1 , respectively. No carbon substrate was detected in the effluent stream, indicating complete utilization of acetate. These results represent a more than twofold increase in lipid production metrics compared with the current best-performing results using concentrated acetic acid as carbon feed.lipid production | acetate | tangential filtration | dynamic modeling | exhaust gas analysis

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Volatile fatty acids production from food waste: Effects of pH, temperature, and organic loading rate

Cited by 519 publications

References 26 publications

Modifying the ADM1 Model to Predict the Operation of an Anaerobic Digester Co-digesting Municipal Sludge with Bakery Waste

Modifying the ADM1 Model to Predict the Operation of an Anaerobic Digester Co-digesting Municipal Sludge with Bakery Waste

Adsorption of Heavy Metals by Adsorbents from Food Waste Residue

Application of metabolic controls for the maximization of lipid production in semicontinuous fermentation

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